HSCH-5300 Series HSCH-5500 Series Conclusion Hewlett-Packard

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HSCH-5300 Series HSCH-5500 Series Conclusion Hewlett-Packard

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Metal Beam Lead Schottky Diodes Reliability Data
HSCH-5300 Series HSCH-5500 Series
Conclusion
Hewlett-Packard's beam lead diodes have successfully passed stringent environmental testing. Hewlett-Packard beam lead diodes used military space applications without necessity hermetically sealed packaging.
SINGLE
General
applications requiring component reliability estimation, Hewlett-Packard provides reliability data families devices. Data compiled from reliability tests demonstrate that product meets specified design criteria. Schottky beam lead families have fulfilled standard requirements reliability qualification.
PAIR
Program Description
purpose this program qualify beam lead diodes operation extreme environmental conditions which encountered during military space operations. following test sequence been designed assess endurance beam lead diodes
through relevant environmental stresses such heat humidity. qualify device hermetic, conventional procedure perform dye-penetrant Radiflo tests. However, because absence enclosed cavity unique design beam lead diode, these tests directly applicable. Therefore, this program utilizes reliability tests such
moisture resistance, salt atmosphere, immersion verify that passivation layer beam lead acts seal protect active area diode. perform these tests, various Schottky diodes were mounted non-hermetic, open packages tested exposed beam lead devices.
5965-8862E
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Applicable Part Numbers
Schottky Beam Leads HSCH-5300 Series HSCH-5500 Series
Test Sequence
Test Moisture Resistance[1,2] Temperature Cycling Constant Acceleration Salt Atmosphere[2] Salt Water Immersion[2] MILSTD-750 1021 1051 2006 1041 (MIL-STD-883, M1002B) Tests Condition R.H. -10°C 65°C, days -65°C 200°C, cyc. min. each axis fog, hours 65°C saturated NaCl solution, cycles Units Tested Failed LTPD
lot)
Notes: sequence moisture resistance temperature cycling followed constant acceleration assures thorough evaluation effect exposure high humidity heat conditions. points were taken after each test. points were: Visual 100X magnification D.C. testing MIL-STD-19500.
Results
demonstrated these tests, Hewlett-Packard's beam lead diodes exhibit superior performance when subjected severe environmental conditions. This proven reliability achievable because Hewlett-Packard's unique beam lead design. These DOD-HDBK-1686 Classification: HSCH-5300 Series Class HSCH-5500 Series Class
beam lead diodes made trimetal (Ti-Pt-Au NiCr-Pt-Au) which extends both operating storage temperature range. addition, nitride passivation layer acts sealant provides immunity from contaminants which could lead drift. Conductive particle
protection provided layer polyimide, which also functions scratch protection. Therefore, recommended that HewlettPackard beam lead diodes used military space applications without necessity hermetically sealed packaging.
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HSCH-5300 Series HSCH-5500 Series Conclusion Hewlett-Packard

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