Contacting Solutions for Reliable, Repeatable Test ... - Johnstech

Contact Life Depends on Many FactorsSince NiPd and NiPdAu platings are much harder and rougher than their matte tin counterparts, Test Contactors or sockets mustbe designed to withstand these challenges. Contact life depends not only on the package material plating properties, but it canvary even more significantly based on the handler-to-Contactor interface, handler velocity, whether auto alignment plates are used,alignment plate opening size and tolerances, and test temperature. Johnstech offers worldwide service and support to ensure thehandler interface is optimized for highest yields, longest contact life, and extended MTBA.New Johnstech ROL TechnologyLow-Force XL-2 ContactsJohnstech has developed the new Low-Force XL-2Series Contacts for the Pad ROL200 and ROL100AContactors for NiPd and NiPdAu package applications.The new Low-Force XL-2 (extended life) Contacts workin concert with new elastomers to provide an optimizedcontacting system for maximum contact life. TheContactors are designed to deliver the proper amountof force to both the device-under-test and the loadboard pads for longer contact life, exceptional continuity,longer MTBA, and longer load board pad life. The Low-Force XL-2 Contacts provide a self-cleaning wipe forexcellent MTBA, even on NiPdAu surfaces that containcontaminants or debris. In addition, the contact motion isdesigned to avoid package burrs, resulting in less debrisgeneration and longer contact life. The contact profilesand elastomers for the Pad ROL100A Series andPad ROL200 Series configured for NiPd and NiPdAuapplications are shown here.Pad ROL100A SeriesPad ROL200 SeriesCustomer Production Performance ImprovementsCustomer production testing with the new Low-Force XL-2Contacts has provided solid performance results. Theyhave experienced higher yields, improved continuity,longer load board pad life, and extended MTBA.Customers have seen significant improvements in contactlife, often beyond 500,000 cycles, even with the mostchallenging NiPdAu and NiPd package platings.

Johnstech ServicesJohnstech offers a full line of technical services to assist you in achieving thehighest level of performance. One of the services that is particularly powerfuland effective for IC package testing is Johnstech’s use of HFSS and ADSsoftware to model the electrical performance of the Contactor and the interfaceto the device and load board pads. This provides direction to select the bestContactor ground configuration for the application and to design the optimalload board trace layout, which are both vital to optimizing the overall systemelectrical performance.Contact JohnstechTo learn more about Johnstech’spatented solutions and servicesthat maximize your precision analogtesting performance, reduce yourengineering risk, and providerepeatable production test results,contact your local Johnstech SalesRepresentative at www.johnstech.com.Electrical Specifications (NiPdAu Configuration) Pad ROL 200 Series Pad ROL 100A SeriesInductance: Self: 0.55 nH 0.37 nHMutual: 0.24 nH0.15 nHCapacitance: Ground: 0.35 pF 0.08 pFMutual: 0.12 pF0.03 pFS 21Insertion Loss: -1dB @ 18.5 GHz -1dB @ 40 GHzS 11Return Loss: -20dB @ 5.8 GHz -20 dB @ 18.3 GHzS 41Crosstalk: -20dB @ 29.5 GHz -20 dB @ 33.5 GHzCurrent Carrying Capability: 2.8 A 2.6 ACompliance: 0.20 mm 0.175 – 0.20 mmContactor configuration also available for Matte Tin packages. See website for specifications.Pad ROL200/ROL100A SeriesPerformance ComparisonThe Low-Force XL-2 Contacts areavailable for both the Pad ROL100Aand Pad ROL200. The choice ofContactor usually depends on theelectrical performance required for thedevice under test. Here is a summaryof the performance differencesbetween the two products.ApplicationsThe Pad ROL100A and ROL200 are used extensively for RF/wireless, precisionanalog, and high speed digital devices that require the highest electrical andmechanical performance for engineering and production applications. Offering thehighest electrical performance, the ROL-series lowers your engineering risk andallows you to set tighter guard bands. With the consistent results it provides, ROLseriesprovides the robust mechanical performance and site-to-site repeatability inproduction applications to increase your yields and maximize your OEE.SummaryThe new Johnstech Low-Force XL-2 Contacts for the Pad ROL100A and ROL200Contactors stand up to the challenges of NiPdAu and NiPd packages. Furthermore,the price of the XL-2 Contacts has been significantly reduced compared to theprevious Eco-1 Contacts. The extended contact life and lower spares costs willlower your overall cost of test. Refer to www.johnstech.com for technical productinformation, or to contact your local Johnstech Representative.The Low-Force XL-2 Contacts also are available on the Johnstech Leaded ROL200and Pad ROL200K Kelvin Contactors.Johnstech International Corporation • 1210 New Brighton Boulevard • Minneapolis, MN 55413-1641 USA • Tel 612.378.2020 • Fax 612.378.2030 • www.johnstech.com • E-mail info@johnstech.com© Copyright 2010, Johnstech International Corporation. Specifications subject to change without notice. No part of this document may be reproduced in any form or by any means, electronicor mechanical, including photocopying, recording or by any information storage or retrieval system, without expressed written permission from Johnstech. Johnstech and Johnstech logo are