When it comes to the equations, you simply need to use the following: W = frac {A} {1. Borang PCB TP1 2023. Any compensation range provided for a role is an. You can also mark the cathode with a “K” (use “K,” not “C,” because “C” can be confused with a capacitor). Select the box with the geometry that you would like to calculate. Accurate and easy to use, Polar Si8000m makes designing impedance. Re: POLAR SI9000e and Sarturn PCB. since i have trie in many tools. Thickness:1ounce. Sample coupon — Gerber Data mpcd1345. Speedstack Si insertion loss controlled PCB stackup design tool is made for you if you are a designer, fabricator or PCB technologist who needs to manage PCB stackups with both impedance and insertion loss control. With PCBWay impedance calculator, you can calculate the approximate impedance of your PCB / high frequency circuit board. To avoid microstrip modes, have h >> (w+2g) and extend component side ground away from the trace by > (w+2g). Sampson Guernsey Channel Islands . Use formula C = (ε * A) / d for estimation. Choose the Speedstack variant most applicable to you. With nonlinear circuits, you will need to use more advanced analyses. eu * Authorised distributor for Polar Instruments Ltd’s products. 1 is an example of making tradeoffs between routing layers and power plane capacitance for a ten-layer PCB. When in doubt, use 1 for copper, . The Polar Form Calculator only needs a single input. Select Calculate and Order from your Eurocircuits account – This will open the PCB Visualizer. Radio Frequency Engineering Calculator. Common Dielectric. Simons, "Coplanar Waveguide Circuits, Components, and Systems", Wiley. There's also a graph which shows you the meaning of what you've found. Reflections, ringing, and overshoot result from traces on the PCB without effective impedance controlling routing. This script calculates the impedance of the printed circuit board with two conducting traces positioned in the dielectric layer between two ground plates. Fault finding conformal coated boards. Many Polar customers request frequency-dependent impedance modelling, with particular reference to transmission line losses – the result is the Si9000e. It is a rather generous copper weight, which is why some are wondering whether it is necessary. External traces: I = 0. If the length of the trace is also provided, the total resistance, voltage drop, and. Microstrip. EIS is not included in tax relief. Stripline Impedance Calculator. Don’t forget to check out our other. It is useful to get the approximate value of the required impedance spacing, etc. These equations are. Click on either of the 2 orange PCB Calculator buttons on the Eurocircuits Home page. 01. Dielectric thickness. These vias and conductors will affect the impedance seen by signals throughout your board. Polar Instruments provides a brief overview of this topic, and the IPC-2141 equation and Wheeler's equations are listed in this article. I can't find the equation that Saturn is using. Solid planes. Dielectric Strength. Most people looking for Polar si9000 pcb transmission downloaded: Si9000 PCB Transmission Line Field Solver. Polar's Speedstack PCB Stackup Builder incorporates a comprehensive Design Rules Check (DRC) function that includes checks for symmetry, copper balance, minimum trace and gap widths and excess resin. Though this is an "imaginary" or "virtual" ground its influence is the same as a real copper wall. After installing, this demonstration version may be fully licensed by ordering Si8000 from your local Polar representative. Now I'd like to get into this topic and the first task would be to create a ~ 10cm board to board interconnect flex PCB with 90 ohm (USB) and 100 ohm (LVDS) controlled impedance traces on it. : gross monthly salary +any allowance subject OT / 26 days (minimum hourly rate according to the Employment Act for payroll calculator malaysia but employers can pay a more) /. The total contribution, both by employees and employers, is capped at 1% of the employees'. A differential stripline pair refers to two traces located between two reference plane layers, which are routed as a differential pair. To understand the workings of PCB antennas, one must know different types of antennas. The spreadsheet contains the following PCB calculators:There are a few rules that we recommend users abide by when using the crosshatch configuration of the Si8000m and Si9000e field solvers and Speedstack PCB Stackup Builder. Payment for 12 and 24 month licenses. This is good for routing space, but not so good for power delivery if there is a need for interplane capacitance. Kindly find the attachment Pcb_calci_satya_20071112. Design-Aid for solder-stop. This form of microstrip is composed of two traces. 8% EPF. Alternatively, you may change the Calculate For option to Bonus Only, this will show the exact amount of statutory contributions for the bonus component only. So whilst the Si8000m gives you tight control in the pre-build stages, Polar’s Controlled Impedance Test System (CITS) extends that control into the fabrication process. Assign substrate values by frequency band to. The XML Interface Module accesses the field solver calculator engine by linking to the Si8000m / Si9000e. The XFE field solver enhancement can be used to model more closely the impedance as fabricated on a flex-rigid PCB using crosshatch return planes. Learn how to optimize your PCB design and fabrication for high-speed applications with these tools. Try This New Tool . Quote Now Book a Tour. Below is our collection of online electronic engineering calculators. Signal problems can abound when trace width values are incorrectly specified in high-speed PCBs. BGA Land calculator to determine optimal pad size. 27 Oct 2017:. 0. is an industry leader in high quality PCB Design and turnkey electronic engineering offering the very best service at competitive prices. Note: The results are only for approximation and rough estimation, the final values and the. Polar Instruments (Europe) Ltd T: +44 23 9226 9113 E: neil. Graphing Calculator Viewer. Altium Designer offers a straightforward solution for. We offer an easy-to-use Signal Layer Estimator that will eliminate your complicated design delays. ) 2019. Therefore, for this example, the excess resin for prepreg 1080 is 0. 75 miles in this case. Figure 13. In the PCB calculator, most of the Transmission line calculations are quite good. You can choose from 3 month, 12 month subscriptions along with 4 year licenses and. 21. AP166 V2. 5oz to 2oz), and minimal spacing between layers to 3mil. If wrongly placed, it will disrupt the functionality, can cause component failures, or even turn the board non-functional. ALTIUM DESIGNER. Explore math with our beautiful, free online graphing calculator. His PCB hooks right up to the GPIO pins of the internal Raspberry Pi Zero, making interfacing with the dome. Note: Units do not matter for this calculation as long as they are consistent. The Si6000b field solving impedance design system is the latest addition to Polar's controlled impedance product range. " Learn more about the calculator here. Polar Instruments Ltd. 5. EIS is not included in tax relief. You write down problems, solutions and notes to go back. Tips on Using the Panelizer CalculatorThe circuit symbol is the capacitance of the polar PCB design and the capacitance of the non-polar PCB design. For PCB fabricators Speedstack PCB interfaces with the industry standard Polar Si8000m PCB Controlled Impedance Field Solver. Real time sharing of specifications. For PCB fabricators Speedstack PCB interfaces with the industry standard Polar Si8000m PCB Controlled Impedance Field Solver. Use this form for processing a Polar number against another Polar number. Modeling approximation can be used to design the microstrip trace. We’ve compiled a set of. We need to perform PCB impedance calculator and PCB. Planarr solver is what you. Height: Height of the substrate. To avoid microstrip modes, have h >> (w+2g) and extend component side ground away from the trace by > (w+2g). When in doubt, use 1 for copper, . The case is 3D printed, the PCB is custom, and even the software is his own creation. This design tool is based on the charts in IPC-2221. all were having formula restrictions of W/H should be less than 3. PCB Impedance Control. is an industry leader in high quality PCB Design and turnkey electronic engineering offering the very best service at competitive prices. This calculator is designed to calculate the characteristic impedance of a microstrip - a flat conductor suspended over a ground plane with a dielectric between them (see diagram below). 45 for gold. CITS measurement systems have been. Calculates the bandwidth of a digital signal and maximum trace length, using the IPC-2251 method or the frequency domain method, for transmission line effects. Quote. com) was closed on Wednesday, September 20, 2023. Co: capacitance per unit length. The impedance is given as a complex number in standard form and polar forms. 024. 04 Feb 2018: Employment Insurance Scheme (EIS) deduction added. Ideal for both rigid and flex-rigid. Graphing Calculator is a tool for quickly visualizing math. Microstrip Impedance Calculator. This calculator requires symmetry in the trace widths and location between plane layers. Try This New Tool. Use a 4. In what follows j j is the imaginary unit such that j2 = −1 j 2 = − 1 or j = −1−−−√ j = − 1. This means we openly challenge the status quo, find new ways to create value and get rewarded for our individual contributions. PCB impedance calculator. After you plug in your complex number, you must click the “Submit” button. Garis Panduan KKCP (Pind. Choose the Speedstack variant most applicable to you. Complete RF PCB Design and Layout in Altium Designer. • The chip resistors have no polarity. Note: The results are only for approximation and rough estimation, the final values and the. Since it is a USB. pcb impedance calculator is usually used in the design of Multilayer PCB, high-frequency PCB, and antenna PCB. PCB signal integrity, stackup and controlled impedance. Si8000m PCB Impedance Field Solver 2022 v22. Download Adobe Reader. 01. CR-8000 Design Force users can now exchange pre-layout stackup designs seamlessly with Polar’s Speedstack for IC Packaging and PCB design. With the Si9000 PCB Transmission Line Field Solver you can view the full range of 2 and 4-port S-parameters in a single chart window. We need to perform PCB impedance calculator and PCB impedance control in these high-frequency PCB signals to ensure the stability of PCB and the pass rate of various index tests. Based on circuit requirements, voltage, size. Please inform if any errors or omissions found. My Notebook, the Symbolab way. It includes a link and license for Polar’s Si8000m, using the proven Polar Si8000m multipleKALKULATOR PCB INLAND REVENUE BOARD MALAYSIA ; NAME ; NEW IDENTITY CARD NO. The Polar Form Calculator will display the polar form of the. So, Impedance needs to be matched on the D+ and D- lines of the USB. 053mm = 0. Instead of using a homemade tool to work out the impedance of each trace in your PCB, Altium Designer incorporates PCB impedance. Example 01: Find the modulus of z = 6 +3i. The result is based on formula not 2D field solve, so it can only confirm the accuracy in a relatively range. Check. If you’re designing an RF PCB for microwave or higher frequencies, controlled impedance routing should be top of mind to ensure signal integrity. Example 2: Find a square root of 10 ∠ 35° leaving the result a) in polar form, b) in rectangular form. The surface finish is neglected. Unfortunately, the mark command doesn't accept coordinates; you have to click the location manually (and therefore, it must be on the current grid). PA = 1/2 * (30/57. 024 x dT0. Therefore, the cartesian to polar calculator display answer for x and y coordinate. There is one open source (s. -. ACC216. Fax +43 7666 20041-20 . The prepreg material is impregnated with a resin, where the. Atlas for Anritsu vector network analyzers (VNAs) is especially focussed on material qualification and the test of high-speed serial data busses at the PCB fabrication level and combines Atlas. The JLCPCB Impedance Calculator computes track width values and recommended stack-ups from user-input values of board layer, thickness, copper weight, target impedance, trace spacing (for edge-coupled pairs), and impedance trace to copper gap (coplanar waveguides). 26 Jan 2019: Employee EPF contribution has been adjusted to follow EPF Third Schedule. model impedance by combining Polar's proven boundary element field-solving engine with easy graphing of process windows. 13mm (depends on manufacturer's specs) and you get a trace width of ~0. This parameter is used for the loss calculations. 10 Dec 2021: Updated PCB calculator for YA2021 and 9% EPF calculation. If we choose a trace separation of 2mm, then the resulting heater will be 8cm long. You can see all of your training and activity data on your phone on the go, and sync them wirelessly to Polar Flow. Salary RM 17300. Dielectric constant. Hence, any PCB amount or PCB before zakat deduction below RM 10 should reflect RM 0. For example, a PCB project with a toll size of 6. We specialize in both Small quantity, Quckturn, and Production printed circuit board Quantities. eu. Sampson Guernsey Channel Islands GY2 4AF ENGLAND email: polarcare@polarinstruments. Because the reflection coefficient Γ < 1, then the return loss will have a positive dB value. KKCP (Pind. To start, select the type of PCB conductor, fill in the geometric measurements of your circuit board, and it will automatically give you the relevant. The edge couple differential symmetric stripline transmission line is a common technique for routing differential traces. CE v21. 0 sech π (5a) and = h w k 2. Crosshatch is a ‘non-ideal’ return path and is difficult to model accurately. L-C Resonance. This software is designed to be used as a fast and easy way to get the PCB income tax calculation values provided by eCP39. If we increase the length of the trace in this design, then the voltage needed to. This calculator can calculate the impedance and propagation delay of any microstrip by taking its respective height, width, thickness & dielectric constant. Thank you for using our service for many years. When calculating PCB, the system estimates the annual income and calculates the portion for the current month. The Cartesian coordinates x and y can be converted to polar coordinates r and θ with r ≥ 0 and θ in the interval (− π, π] using the following formulas: r = x2 +y2− −−−−−√, θ = arctan(y x). 23. Calculates the current a conductor needs to raise its temperature over ambient. Understanding and correctly calculating your PCB’s trace width limitations is crucial for keeping your PCB. Electronegativity is a dimensionless number; the greater the electronegativity value, the greater the attraction for shared electrons. reischer@polarinstruments. Expect a large variation of. You can route signals with lower frequency/slower switching speeds or through an interior layer as long as they are orthogonal. Inductive load. There are a few rules that we recommend users abide by when using the crosshatch configuration of the Si8000m and Si9000e field solvers and Speedstack PCB Stackup Builder. This note describes some of the practical difficulties you'll sometimes run into when testing a controlled impedance PCB. Step 1. Antibiotic Resistance Download. +86 134 0021 8776This tool calculates the matching network necessary to terminate a line of the specified characteristic impedence (Z o) in a specific complex load impedence (R L + jX L) at a specified frequency. 378 [mils/oz] ) For IPC-2221 internal layers: k = 0. 01 / PSec v20. Si8000m Multi Dielectric PCB Impedance Field Solver 2022. Accurate and easy to use, Polar Si8000m makes designing impedance controlled PCB trace dimensions and is the solver of choice for OEMs and fabricators working with. In Altium, with 1oz copper on the top and plane layers, and 0. Width of trace:100 mills. 99ohms. Single-Ended Impedance. 946 for silver, or 1. To convert from the rectangular to the polar form, we use the following rectangular coordinates to polar coordinates formulas: r = √ (x² + y²) θ = arctan (y / x) Where: x and y — Rectangular coordinates; r — Radius of the polar coordinate; and. Coplanar Waveguide Calculator. A Polar Coordinates Calculator is a tool used to convert between polar coordinates (r, θ) and Cartesian coordinates (x, y). Similar forms are listed to the right. The following formula is used to calculate the cut-off frequency, lower & higher operational frequency of the rectangular waveguide. This tool uses formulas from IPC-2221 to calculate the width of a copper printed circuit board conductor or "trace" required to carry a given current while keeping the resulting increase in trace temperature below a specified limit. This calculator can calculate the impedance and. KwickFit is the easiest to use PCB panel calculator on the planet and it's power layout engine will deliver cost saving optimizations again and again. convert complex numbers to polar co-ordinates. Click Finish and FlowSync launches. Polychlorinated biphenyls (PCBs) are derived from biphenyl by substitution of one to 10 hydrogen atoms by chlorine atoms. Speedstack PCB Stackup Design and Documentation . Speedstack is a versatile PCB layer stackup design tool featuring powerful and easy to use graphical stackup editing capabilities. Follow this short decision tree to select the version of Speedstack that matches your stackup design and modelling requirements. ImpedCalc is a free transmission line impedance calculator. This design tool is based on the charts in IPC-2221. Electronegativities are used to determine the polarity of covalent bonds. What is coplanar gaveguide circuits. Polar instruments impedance calculator download. Borang PCB TP1 2023. Z-planner Enterprise contains a stackup calculator which ensures signal integrity across a PCB for various controlled impedance models to quickly simulate electrical performance based on the current stack up configuration. Borang PCB TP3 2023. The impedance calculator from Becker & Müller is a tool to approximate the dimensions of conductor impedance. Free Polar to Cartesian calculator - convert polar coordinates to cartesian step by stepTo estimate the cost of your PCB design optimization, you can use a PCB design software tool, such as KiCad. Stripline Impedance Calculator. To convert from the rectangular to the polar form, we use the following rectangular coordinates to polar coordinates formulas: r = √ (x² + y²) θ = arctan (y / x) Where: x and y — Rectangular coordinates; r — Radius of the polar coordinate; and. xls. 022mm (75um – 53um = 22um) This value is the total excess resin value. PCB Trace Width Calculator & PCB Trace Resistance Calculator per IPC-2152. Follow this short decision tree to select the version of Speedstack that matches your. Borang PCB TP1 2023. In cases where higher quality is needed, we recommend Shengyi S1000-2M (TG 170) which is the closest in quality to Isola FR406 (Tg 170). Using Polar's XFE technique with its multiple 2-D solver passes, PCB fabricators benefit from a reduction in the number of prototype turns required to achieve the desired impedance on flex-rigid PCBs. Fig. The stackup can be validated in Zuken’s DFM Center before release to manufacturing. Please note that all registered data will be deleted following the closure of this site. Modulus Argument Type Operator . my calculation formula. 31 Jan 2018: Official Jadual PCB 2018 link updated. PCB substrates with higher moisture content will have higher leakage current as water and other liquids used during PCB manufacturing processes are polar, thus they tend to have high conductivity. It is based on our new book "PCB Design Guide to Via and Trace Currents and Temperatures. In addition the TRC100 can calculate resistance of rectangular or trapezoidal traces made of materials other than copper. GY2 4AF . The spreadsheet contains the following PCB calculators: There are a few rules that we recommend users abide by when using the crosshatch configuration of the Si8000m and Si9000e field solvers and Speedstack PCB Stackup Builder. This is particularly helpful during the PCB design and layout stages. 5% of their employees' monthly earnings. The Breadth and Depth of Your PCB Design Workflow The routing process remains the most time-consuming layout task, Altium Designer interactive routing technology makes design dense board layouts much easier. Accurate and easy to use, Polar Si8000m makes designing impedance. The approximate formulas are provided along with restrictions on the relative size of the various parameters. All About Circuits is the largest online electrical engineering. PCB impedance control is a routine specification on many boards; however, as geometries shrink, fabricators making a TDR impedance measurement on a PCB can start to see the impedance TDR trace rising over its length because of the DC resistance of. ->. Cartesian Polar. ELISA for Windows is a series of programs or program modules which process bioassay data collected from 96 well ELISA plates downloaded from several different models of ELISA readers. Many Polar customers request frequency-dependent impedance modelling, with particular reference to transmission line losses – the result is the Si9000e. casio. We have Altium Designer with integrated SIMBEOR modul, which is much more expensive year by year. We recommend the software from Polar Instruments if you want to get exact impedance calculation. Speedstack Si insertion loss controlled PCB stackup design tool is made for you if you are a designer, fabricator or PCB technologist who needs to manage PCB stackups with both impedance and insertion loss control. Our free impedance calculator for coplanar waveguide can help you with your design features to ensure your PCB is working as you intend. A fully unified, heavily rules-driven PCB design platform for impedance controlled routing in high-speed PCB design. email: [email protected]. The kusashi calculators are free online tools for general use. I hope this guide was. When the toll size is more than 1㎡, the PCB price is calculated in square meters, and the fractional part of the toll size amount is counted as 1 square meter. This will open the PCB Visualizer. Terminate Routing Automatically. Helical or Helix Antennas transmit a circular polarized wave. Board fabricator stackup is imported into CR-8000 Design Force. As of my knowledge cutoff of 2021, the contribution rate for employees is 0. 11 (Free educational utility – license valid until 31 Dec 2025). zip (170k) AP117. This note proposes a professional alternative to cleaning with commercial solvents. 3) to calculate trace width and. Source; Wikipedia Capacitors further have a concept of capacitor polarity that includes polar and non-polar capacitors. Coplanar Waveguide Calculator. 0 Eigenvalue Insertion Loss Test. Graph functions, plot points, visualize algebraic equations, add sliders, animate graphs, and more. The PCB Impedance Calculator in Altium Designer. TX-LINE software is a FREE and interactive transmission-line utility for the analysis and synthesis of transmission-line structures that can be used directly in Cadence ® AWR ® Microwave Office ® software for matching-circuits, couplers, and other high-frequency designs. the tool is linked to our 2D field solver-based impedance calculator which allows you to design any controlled impedance traces. PCBs are a group of man-made organic chemicals consisting of carbon, hydrogen and chlorine atoms. 5. Board fabricator stackup is imported into CR-8000 Design Force. The Si8000m adds enhanced modelling to predict the finished impedance of multiple dielectric PCB builds and also takes into account the local variations in dielectric. Select the installation location on your computer, click Next and wait for the install to complete. ->. This statistical converter for the complex number to polar form is provided for your personal use and should be used as a guide only. It is performed to achieve maximum power transfer and reduce the signal. 0 insertion loss test coupons is now available in CGen Si edition impedance and insertion loss coupon generator. Phone: +44 (0)1425 489 111 / +49 (0) 8104 628 0. plaese tell me the answer for this. Version 4 series is accurate to the IPC-2152 but may be too conservative in many cases. The Si9000e provides for both lossless and frequency-dependent modelling and extracts full transmission line parameters for a wide range of PCB transmission lines. Ideal for both rigid and flex-rigid stackups The Si8000m is a boundary element method field solver that builds on the familiar easy to use user interface in earlier Polar impedance design systems. Either the desired impedance at a specific frequency is used to determine the waveguide width, or the width is entered and the impedance is calculated. But I want to calculate inductance of pcb trace width. IPC 2221 PCB Calculator trace width. CAM350, GerbTool, Polar Impedance Calculator. To use it, first select thetolerance of the resistor: 10%, 5% or equal or smaller than 2%. These independent operations are neither agents or subsidiaries of Polar. PCB Toolkit Version 4 series: This version uses the IPC-2152 “conservative” chart for finding conductor current vs. PENGIRAAN PCB TAHUN: PERNAH BEKERJA SEBELUM INI DALAM TAHUN SEMASA. ENGLAND . CGen Controlled Impedance Coupon Generator 2021. Accept the license agreements and click Next. It includes a link and license for Polar’s Si8000m, using the proven Polar Si8000m multiple Signal integrity tools. Most popular calculators don’t even have a box height parameter. Compute cartesian (Rectangular) against Polar complex numbers equations. Enter the Wavelength, Number of Turns and the space between each coil to calculate the Antenna Gain, wire diameter, Half Power Beam Width, Beam Width First Nulls and Effective Apperature. EPD100 2022 v22. Depends on PCB size, trace layout, and dielectric. A microstrip is a type of transmission line in which a strip of a conducting material like copper is mounted on a dielectric material and routed to a ground plane. At Koch companies, we are entrepreneurs. Modeling approximation can be used to design the microstrip trace. 01 / PSec v20. Polar Complex Numbers Calculator. CITS880s – Controlled Impedance. 4mm to 3. com MAN 199–1905Download FREE PCB Calculator/ Salary Calculator Desktop Application. Polar instruments GmbH . Wavelength calculator Calculates the wavelength of a signal using Ereff. BGA land calculator based on the IPC-7351A specification. Polar systems are. Instructions are below the calculator and don’t forget we can make and test your controlled impedance printed circuit boards too. Polar Home: TRC100:. 03. Formally, S11 is the negative of return loss and. 7E-6 [Ω · cm] L is the trace length [cm] T is the trace thickness [cm] W is the trace width. Calculates the inductance of a planar PCB inductor. *Solder resist PCB coating will have the effect of lowering the impedance (due to the 30um or so of Er 3. In addition to a powerful coplanar waveguide calculator, Altium Designer users will have access to a. 17 Mar 2018: Introduced PCB Schedule Mode where PCB amount will match LHDN PCB Schedule. reflection coefficient definition. If the capacitor of the PCB design is charged, the charge will accumulate on the bipolar plate of the capacitor of the PCB design. Planar Inductor Calculator. Free Cartesian to Polar calculator - convert cartesian coordinates to polar step by stepOur company export Electronics PCB Assembly, PCB Assembly, we have a whole set of quality management system. For PCB fabricators, Speedstack PCB interfaces with the industry standard Polar Si8000m PCB Controlled Impedance Field Solver. Example Problem #2: For this problem, the variables required are provided below: polar angle (degrees) = 6. 0 / Polar Graph v19. Polar CITS – coupons only; Tektronix 8300 – boards as well as coupons. PCB Layer Calculation and Documentation Tool User Guide Speedstack PCB Stackup Design and Documentation Polar Instruments Ltd Polar Instruments Ltd. Removed YA2017 tax comparison. 03. [m] width of the trace. The calculator below uses Wadell’s. We recommend the software from Polar Instruments if you want to get exact impedance calculation. Hi marce, Thanks for the reply. Berikut merupakan cara-cara untuk mendaftar akaun pcb income tax; Layari laman sesawang seperti pada rajah di atas ini. Height: Height of the substrate. The Si9000 Via Checks tab includes via stub checking (see Polar Application Note AP8166) and via pad/anti-pad calculation. Rectangular to Polar conversion. Acknowledgements: The source for formulas used in this calculator (except where otherwise noted) is the Design Guide for Electronic Packaging Utilizing High-Speed Techniques (4th Working Draft, IPC-2251, February 2001. Selection Criteria.