INCH-POUND
The documentation and process
conversion measures necessary to comply
with this revision shall be completed by
15 May 2002.
MIL-PRF-19500/255N
15 February 2002
SUPERSEDING
MIL-PRF-19500/255M
20 March 2001
PERFORMANCE SPECIFICATION
SEMICONDUCTOR DEVICE, TRANSISTOR, NPN, SILICON, SWITCHING,
TYPES 2N2221A, 2N2221AL, 2N2222A, 2N2222AL, 2N2221AUA 2N2222AUA,
2N2221AUB, AND 2N2222AUB, JAN, JANJ, JANTX, JANTXV, JANTXVD, JANTXVH,
JANTXVM, JANTXVR, JANS, JANSD, JANSH, JANSM, JANSR, JANHC, JANHCM,
JANHCD, JANHCR, JANHCH, JANKC, JANKCM, JANKCD, JANKCR, AND JANKCH
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers the performance requirements for NPN, silicon, switching transistors. Five
levels of product assurance are provided for each encapsulated device type as specified in MIL-PRF-19500, and two
levels of product assurance are provided for each unencapsulated device type. Provisions for radiation hardness
assurance (RHA) to four radiation levels is provided for JANTXV JANS, JANHC, and JANKC 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.
* 1.2 Physical dimensions. See figure 1 (similar to T0-18), figures 2 and 3 (surface mount case outlines UA and
UB), and figures 4, 5, and 6 (JANHC and JANKC).
1.3 Maximum ratings.
PT
Types
IC
VCBO
V dc
VCEO
V dc
VEBO
V dc
T
OP and TSTG
TA = +25°C
Rθ
JA
W
mA dc
°C
°C/W
2N2221A, L,
2N2222A, L
(1) 0.5
(1) 0.5
800
800
75
75
50
50
6
6
-65 to +200
-65 to +200
325
325
2N2221AUA,
2N2222AUA
(2) 0.65
(2) 0.65
800
800
75
75
50
50
6
6
-65 to +200
-65 to +200
210
210
2N2221AUB,
2N2222AUB
(1) 0.50
(1) 0.50
800
800
75
75
50
50
6
6
-65 to +200
-65 to +200
325
325
(1) Derate linearly 3.08 mW/°C above TA = +37.5°C.
(2) Derate linearly 4.76 mW/°C above TA = +63.5°C.
Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving
this document should be addressed to: Defense Supply Center Columbus, ATTN: DSCC-VAC, P.O. Box 3990
Columbus, OH 43216-5000, by using the Standardization Document Improvement Proposal (DD Form 1426)
appearing at the end of this document or by letter.
AMSC N/A
FSC 5961
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.