Burn-in & Test Socket Workshop - BiTS Workshop

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Summary of Observations • Further Study ‣ Extend cycles to simulate longer “life” use of typical socket in production ‣ Extend evaluation of 125% force on NoPb ‣ Additional ball sticking tests ‣ Ball hardness at temperature The Effects of No Lead Solder Balls on Burn-in Socket Design Decisions Page 26
Conclusions • Overall performance of existing socket contact and plating for No Pb solder is similar enough to performance with Pb solder that we do not believe dramatic changes in burn-in socket technology are necessary. Increased sticking of No Pb solder balls and long term performance both need further investigation. The Effects of No Lead Solder Balls on Burn-in Socket Design Decisions Page 27
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Burn-in & Test Socket Workshop Marc
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Burn-in & Test Socket Workshop Sess
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Objectives • Determine impact of
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Pb free - Background • Why Pb fre
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Typical Test Setup • Pneumatic co
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PBGA Test Socket Resistance at Cycl
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CBGA Test Socket Resistance • Dai
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CBGA Test Damage 90/10 Leadfree Wit
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CCGA Contact Resistance Average Res
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PBGA Contactor Resistance at Burnin
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Ball Damage 1.00mm Pitch Contactor
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PBGA Contactor Resistance at Burnin
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PBGA Contactor Cleaning • Surface
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Pb Free Early Learning Summary Con
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Up Front Concerns with Lead-Free So
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Lead-free Alloy Wish List (Short Li
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Undesirable Effects of Other Elemen
Page 35 and 36: Test Objective • Metallurgical Pl
Page 37 and 38: Metallurgical Plating Test • Test
Page 39 and 40: 100 % SN Plated Lead SEM micrograph
Page 41 and 42: Internal Device Resistance Baseline
Page 43 and 44: 90% Sn 10%Pb Tested at Plus 125º C
Page 45 and 46: Resistance in Ohms 0.02 0.018 0.016
Page 47 and 48: 100% Sn Lead Plating Tested at Plus
Page 49 and 50: Resistance in Ohms 0.05 0.045 0.04
Page 51 and 52: 90% Sn 10% Pb Lead Plating Tested a
Page 53 and 54: Resistenance in Ohms 0.035 0.03 0.0
Page 55 and 56: 90% Sn 10%Pb Tested at Plus 125º C
Page 57 and 58: Resistance in Ohmsa 0.03 0.025 0.02
Page 59 and 60: Conclusion • Changes made to cont
Page 61 and 62: The Effects of No Lead Solder Balls
Page 63 and 64: What we asked… Experimental Objec
Page 65 and 66: Evaluation Criteria Overview of Exp
Page 67 and 68: Overview of Experiment Test Methods
Page 69 and 70: Stage 2 Objective Experimental Deta
Page 71 and 72: Experimental Detail / Analysis Stag
Page 85: • General Observations Summary of
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Burn-in & Test Socket Workshop - BiTS Workshop

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