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MIL-PRF-19500-609 Semiconductor Device, Diode, Silicon, Switching, Types 1N6639, 1N6640, 1N6641, 1N6639Us, 1N6640Us, And 1N6641Us Jan, Jantx, Jantxv, Jans, Janhc, And JankcThis specification covers the performance requirements for controlled forward voltage switching diodes. Four levels of product assurance are provided for each device type as specified in MIL-PRF-19500.

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MIL-PRF-19500/609K
4.5.2 Forward-recovery voltage and time. Forward recovery time shall be measured as the time interval between
zero time and the point where the pulse has decreased to 110 percent of the steady-state value of VF when
IF = 200 mA dc. The maximum rise time of the response detector shall be 1 ns. The maximum forward recovery
voltage (Vfr) during the forward recovery interval shall also be measured.
4.5.3 Scope display evaluation. Scope display evaluation shall be stable in accordance with method 4023 of
MIL-STD-750. Scope display may be performed on automatic test equipment for screening only with the approval of
the qualifying activity. Scope display in table I herein shall be performed on an oscilloscope. Reverse current (IBR)
over the knee shall be 100 µA peak.
4.5.4 Pulse measurements. Conditions for pulse measurements shall be as specified in section 4 of
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