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MIL-S-19500/255 Revision H, July 25, 1994
Complete Document
Superseded By: MIL-PRF-19500/255
SEMICONDUCTOR DEVICE, TRANSISTOR, NPN, SILICON, SWITCHING TYPES 2N2221, 2N2222, 2N2221A, 2N2222A, 2N2221AUA, 2N2222AUA, 2N2221AUB, 2N2222AUB, 2N2221AUC, AND 2N2222AUC JAN, JANTX, JANTXV,
Includes all amendments and changes through Amendment 1, April 26, 1995
Additional Comments: CNCL S/S BY MIL-PRF-19500/255
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This specification covers the detail requirements for NPN, silicon, switching transistors. Four levels of product assurance are provided for each device type as specified in MIL-S-19500. Provisions for radiation hardness assurance (RHA) to four radiation levels is provided for JANTXV and JANS product assurance levels. RHA level designators "M", "D", "R", and "H" are appended to the device prefix to identify devices which have passed RHA requirements.

See figures 1 and 2 (similar to a TO-18), figures 3 and 4 (surface mount case outlines UA and UB), and figure 5 (JANC).

TABLE Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: US Army Research Laboratory Electronics and Power Sources Directorate, ATTN: AMSRL-EP-RD, Ft. Monmouth, NJ 07703-5601 by using the Standardization Document Proposal (DD Form 1426) appearing at the end of this document or by letter. FIGURE 1. Physical dimensions (similar to TO-18). FIGURE 2. Gauge for lead and tab location. FIGURE 3. Physical dimensions, surface mount (UA version). FIGURE 3. Physical dimensions, surface mount (UA version) - Continued. FIGURE 4. Physical dimensions, surface mount (UB version). FIGURE 5. JANHC and JANKC (A-version) die dimensions.