High Frequency Test Methods Project Phase II

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1 High Frequency Test Methods Project Phase II Project Lead: Karl Sauter, Oracle HDPug Facilitator: Jack Fisher Updated: April 20, 2015

2 Problem Statement Some high frequency test methods (1 GHz up to at least 20 GHz) measure significantly different Dk and especially Df values depending upon the moisture content of the laminate material being tested HDP User Group International, Inc. All rights reserved 2

3 Background Phase I of this project showed strong Dk and Df data correlations between high frequency test methods that were of the same type. However, differences in moisture content were found to contribute up to a 20 percent difference in the measured Df values of some laminate materials tested HDP User Group International, Inc. All rights reserved 3

4 Project Proposal Phase II of this project proposes to evaluate the effect of moisture on each of the laminate material high frequency Dk and Df test methods, except EBW. The lower loss laminate materials selected for this testing will be known to be able to absorb significant amounts of moisture, but without any fillers capable of releasing water or moisture into the resin system during thermal excursions or at higher temperatures. 4

5 Test Methods & Testing Phase II Tri-Plate Resonator [Z-Direction] T. Fischer, Hitachi SUM-DISK (50x50 mm) [Z-Direction] Shunichi, Fujitsu SUM-PLATE* (85x85 mm) [In-Plane] Shunichi, Fujitsu SUM-CYLINDER* (15x15 mm) [In-Plane] Shunichi, Fujitsu SPDR Transverse Electric K. Zhang, Shengyi SPDR Transverse Magnetic C. Mitchell, EMC S-3 Slotted Coupon [Trace/Conductor] S. Hinaga, Cisco Bereskin Stripline? M. Gay, A. Ippich, Isola 4-Port VNA? B. Butler, Introbotix SPP? K. Taylor, Polar Instruments SET2DIL? K. Taylor, Polar Instruments Weight Gain Test Coupon(s) All testing sites * new 5

6 Goals 1) Determine sensitivity of each test method to the percent moisture content in the laminate material. 2) Determine what test frequency range or ranges is/are most affected by the moisture present within a laminate material. Benefit Identifying the test methods and frequencies that are most and least sensitive to moisture will help users better interpret existing data and select appropriate laminates for use in higher speed applications. 6

7 Test Plan Overview Validity of the test methods and test board design has already been established. Only a few low Dk and low Df laminate materials at low and high moisture contents will be tested. Moisture content will be the only main variable for the Dk/Df testing, not temperature. Influence of coupon size and design will not be able to be distinguished from the test method itself. 7

8 Test Plan, cont.: Moisture Content Using only no-copper test coupons, first determine whether the planned different moisture content preconditions (initial As-Is, High, Dry) and testing will work with the Megtron-6 laminate material. a) Weight Gain/Loss (micro-balance) b) High Moisture Preconditioning 85% R.H. and 85 C for168 hours c) Final Preconditioning Baking at 135 C Dk/Df test and weigh coupon every 24 hours until Df shows less than 2 percent change 8

9 Flowchart & Calendar Jul. 15 Aug. 15 Sep. 15 Oct. 15 Sep. 15 Oct. 15 Nov. 15 Finish re-designing HF-TM test board Build test boards with Megtron-6 Test boards sent to Z-Direction testers (Hitachi, Fujitsu) As-Is, High Humidity, and Dry results Revise test plan Build test boards with 4 other laminates Send test boards to all testers Feb. 15 Apr. 15 Analyze all test and weight results Write final report 9

10 HDP User Group Project Participants Shunichi Kikuchi, Fujitsu Scott Hinaga, Cisco Karl Sauter, Oracle Michael Freda, Oracle Kevin Zhang, Shengyi Figaro Ho, EMC Curt Mitchell, EMC Tony Senese, Panasonic Joe Smetana, Alcatel-Lucent Ken Taylor, Polar Instruments Michael Gay, Isola Group Alex Ippich, Isola Group Brian Butler, Introbotix Jeff Loyer, Intel Terry Fischer, Hitachi 10