MIL-PRF-19500-343 Semiconductor Device, Transistor, Npn, Silicon, Low Power, Types 2N2857 And 2N2857Ub, Jan, Jantx, Jantxv, And Jans, Jansm, Jansd, Jansp, Jansl, Jansr, Janhcf, Janhcg, Jansh, Janhc, And JankcThis specification covers the performance requirements for NPN, silicon, low power, ultra-high frequency transistors. Four levels of product assurance are provided for each device type. Two levels of product assurance are provided for unencapsulated devices as specified in MIL-PRF-19500. RHA level designators "M", "D", "P", "L", "R",

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MIL-PRF-19500/343K

3.4.1 Lead finish. Lead finish shall be solderable in accordance with MIL-PRF-19500, MIL-STD-750, and herein.

Where a choice of lead finish is desired, it shall be specified in the acquisition document (see 6.2).

3.5 Radiation hardness assurance (RHA). Radiation hardness assurance requirements, PIN designators, and

test levels shall be as defined in MIL-PRF-19500.

3.6 Electrical performance characteristics. Unless otherwise specified herein, the electrical performance

characteristics are as specified in 1.3, 1.4, and table I.

3.7 Electrical test requirements. The electrical test requirements shall be as specified in table I.

3.8 Marking. Marking shall be in accordance with MIL-PRF-19500. At the option of the manufacturer, marking on

the UB package may be omitted from the body, but shall be retained on the initial container.

3.9 Workmanship. Semiconductor devices shall be processed in such a manner as to be uniform in quality and

shall be free from other defects that will affect life, serviceability, or appearance.

4. VERIFICATION

4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:

a. Qualification inspection (see 4.2).

b. Screening (see 4.3).

c. Conformance inspection (see 4.4 and tables I, II, III, and IV).

4.2 Qualification inspection. Qualification inspection shall be in accordance with MIL-PRF-19500 and as

specified herein.

4.2.1. JANHC and JANKC qualification. JANHC and JANKC qualification inspection shall be in accordance with

MIL-PRF-19500.

4.2.2 Group E qualification. Group E inspection shall be performed for qualification or re-qualification only. In

case qualification was awarded to a prior revision of the specification sheet that did not request the performance of

table IV tests, the tests specified in table IV herein that were not performed in the prior revision shall be performed on

the first inspection lot of this revision to maintain qualification.