Mil-Spec Numbering System – Defined
Non-Wirewound RJ Styles
High-Rel Wirewound Specification
MIL-PRF-22097
Style
Characteristic
Temperature Coefficient Max.
Contact Resistance Variation Max.
Thermal Shock
Humidity
Shock
Vibration
Load Life
Low Temperature
High Temperature
Rotational Life
Terminal Type
Resistance Code
First Two Digits Significant
Last Digit = Number of Zeroes
(103 = 10,000 ohms)
±100 ppm/°c
1%
1%
1%
1%
1%
2%
1%
2%
2%
RJ24
F
W
103
MIL-PRF-39015 RTR Styles
This specification has a procedure for ordering,
processing, and marking parts entirely different
than the other three specifications. IT DOES
NOT USE THE TYPE DESIGNATION NUMBER
AS THE PART NUMBER.
The number to order by consists of:
1. The individual specification sheet number
M39015/2 (for style RTR22)
M39015/3 (for style RTR24)
2. A dash number from the specification sheet
table for the resistance value
M39015/2
-003 500
-004
1K
-005
2K
-006
5K
-007 10K
-008 20K
3. Terminal Type
4. Failure rate level M
M=1%
% Failure/1,000 Hours – 60% Confidence
M39015/3
-006 500
-007
1K
-008
2K
-009
5K
-101 10K
Non-Wirewound RJR Styles – High Reliability
MIL-PRF-39035
Style
Characteristic
Temperature Coefficient Max.
±100 ppm/°c
Contact Resistance Variation Max.
1%
Thermal Shock
1%
Humidity
1%
Shock
1%
Vibration
1%
Load Life
2,000 Hours
3%
10,000 Hours
3%
Low Temperature
1%
High Temperature
3%
Rotational Life
2%
Conditioning
1-1/2 %
Terminal Type
Resistance Code
First Two Digits Significant
Last Digit = Number of Zeroes
(102 = 1,000 ohms)
Failure Rate
(% Failures/1,000 Hours – 60 % Confidence)
M = 1.0 %
P = 0.1 %
R = .01 %
RJR24
F
W
102
P
Examples of Part Numbers
M39015/2 –
006LM
5K Term. Type L – Failure Rate M
M39015/3 –
010XM
10K Term. Type X – Failure Rate M
The table on the next page shows all part
numbers covered by this specification, the
conversion to the RTR type designation number
required by the supplier to manufacture the
part, and the number that will be marked on the
units you receive (same as part number ordered
but with the letter “J” in front of it). The letter
“J” is a government mark and it is certification
that the parts comply with the specification.
Information Notes:
1. M39015/3 was added to the MIL-SPEC after its original
release.
Wirewound RT Styles
MIL-PRF-27208
Style
Characteristic
C = Temperature Coefficient ±50 ppm/°C
2 = 85 ° Rating Temperature, 150 ° Maximum Operating Temperature
Terminal Type
Resistance Code
First Two Digits Significant
Last Digit = Number of Zeroes
(101 = 100 ohms)
RT24
C2
P
101
Military Trimmers
Specifications are subject to change without notice.
Customers should verify actual device performance in
their specific applications.
98
Qualified Part Numbers
RJ24 (Commercial Model 3296 for P, W, X; Model 3292 for L)
Standard
Values
(ohms)
10
20
50
100
200
500
1K
2K
5K
10K
20K
25K
50K
100K
250K
500K
1 MEG
RJ24F_____
L
RJ24FL100
RJ24FL200
RJ24FL500
RJ24FL101
RJ24FL201
RJ24FL501
RJ24FL102
RJ24FL202
RJ24FL502
RJ24FL103
RJ24FL203
RJ24FL253
RJ24FL503
RJ24FL104
RJ24FL254
RJ24FL504
RJ24FL105
P
RJ24FP100
RJ24FP200
RJ24FP500
RJ24FP101
RJ24FP201
RJ24FP501
RJ24FP102
RJ24FP202
RJ24FP502
RJ24FP103
RJ24FP203
RJ24FP253
RJ24FP503
RJ24FP104
RJ24FP254
RJ24FP504
RJ24FP105
W
RJ24FW100
RJ24FW200
RJ24FW500
RJ24FW101
RJ24FW201
RJ24FW501
RJ24FW102
RJ24FW202
RJ24FW502
RJ24FW103
RJ24FW203
RJ24FW253
RJ24FW503
RJ24FW104
RJ24FW254
RJ24FW504
RJ24FW105
X
RJ24FX100
RJ24FX200
RJ24FX500
RJ24FX101
RJ24FX201
RJ24FX501
RJ24FX102
RJ24FX202
RJ24FX502
RJ24FX103
RJ24FX203
RJ24FX253
RJ24FX503
RJ24FX104
RJ24FX254
RJ24FX504
RJ24FX105
RJR24 (Commercial Model 3296)
Standard
Values
(ohms)
10
20
50
100
200
500
1K
2K
5K
10K
20K
25K
50K
100K
250K
500K
1 MEG
RJR24F_____
P
RJR24FP100*
RJR24FP200*
RJR24FP500*
RJR24FP101*
RJR24FP201*
RJR24FP501*
RJR24FP102*
RJR24FP202*
RJR24FP502*
RJR24FP103*
RJR24FP203*
RJR24FP253*
RJR24FP503*
RJR24FP104*
RJR24FP254*
RJR24FP504*
RJR24FP105*
W
RJR24FW100*
RJR24FW200*
RJR24FW500*
RJR24FW101*
RJR24FW201*
RJR24FW501*
RJR24FW102*
RJR24FW202*
RJR24FW502*
RJR24FW103*
RJR24FW203*
RJR24FW253*
RJR24FW503*
RJR24FW104*
RJR24FW254*
RJR24FW504*
RJR24FW105*
X
RJR24FX100*
RJR24FX200*
RJR24FX500*
RJR24FX101*
RJR24FX201*
RJR24FX501*
RJR24FX102*
RJR24FX202*
RJR24FX502*
RJR24FX103*
RJR24FX203*
RJR24FX253*
RJR24FX503*
RJR24FX104*
RJR24FX254*
RJR24FX504*
RJR24FX105*
RJ/RJR26 (Commercial Model 3262; Commercial Model 3266 for A & B)
Standard
Values
(ohms)
10
20
50
100
200
500
1K
2K
5K
10K
20K
25K
50K
100K
200K
250K
500K
1 MEG
RJ26F_____
P
RJ26FP100
RJ26FP200
RJ26FP500
RJ26FP101
RJ26FP201
RJ26FP501
RJ26FP102
RJ26FP202
RJ26FP502
RJ26FP103
RJ26FP203
RJ26FP253
RJ26FP503
RJ26FP104
—
RJ26FP254
RJ26FP504
RJ26FP105
W
RJ26FW100
RJ26FW200
RJ26FW500
RJ26FW101
RJ26FW201
RJ26FW501
RJ26FW102
RJ26FW202
RJ26FW502
RJ26FW103
RJ26FW203
RJ26FW253
RJ26FW503
RJ26FW104
—
RJ26FW254
RJ26FW504
RJ26FW105
X
RJ26FX100
RJ26FX200
RJ26FX500
RJ26FX101
RJ26FX201
RJ26FX501
RJ26FX102
RJ26FX202
RJ26FX502
RJ26FX103
RJ26FX203
RJ26FX253
RJ26FX503
RJ26FX104
—
RJ26FX254
RJ26FX504
RJ26FX105
P
RJR26FP100*
RJR26FP200*
RJR26FP500*
RJR26FP101*
RJR26FP201*
RJR26FP501*
RJR26FP102*
RJR26FP202*
RJR26FP502*
RJR26FP103*
RJR26FP203*
RJR26FP253*
RJR26FP503*
RJR26FP104*
RJR26FP204*
RJR26FP254*
RJR26FP504*
RJR26FP105*
W
RJR26FW100*
RJR26FW200*
RJR26FW500*
RJR26FW101*
RJR26FW201*
RJR26FW501*
RJR26FW102*
RJR26FW202*
RJR26FW502*
RJR26FW103*
RJR26FW203*
RJR26FW253*
RJR26FW503*
RJR26FW104*
RJR26FW204*
RJR26FW254*
RJR26FW504*
RJR26FW105*
RJR26F_____
X
RJR26FX100*
RJR26FX200*
RJR26FX500*
RJR26FX101*
RJR26FX201*
RJR26FX501*
RJR26FX102*
RJR26FX202*
RJR26FX502*
RJR26FX103*
RJR26FX203*
RJR26FX253*
RJR26FX503*
RJR26FX104*
RJR26FX204*
RJR26FX254*
RJR26FX504*
RJR26FX105*
A**
RJR26FA100*
RJR26FA200*
RJR26FA500*
RJR26FA101*
RJR26FA201*
RJR26FA501*
RJR26FA102*
RJR26FA202*
RJR26FA502*
RJR26FA103*
RJR26FA203*
RJR26FA253*
RJR26FA503*
RJR26FA104*
RJR26FA204*
RJR26FA254*
RJR26FA504*
RJR26FA105*
B**
RJR26FB100*
RJR26FB200*
RJR26FB500*
RJR26FB101*
RJR26FB201*
RJR26FB501*
RJR26FB102*
RJR26FB202*
RJR26FB502*
RJR26FB103*
RJR26FB203*
RJR26FB253*
RJR26FB503*
RJR26FB104*
RJR26FB204*
RJR26FB254*
RJR26FB504*
RJR26FB105*
Bourns reserves the right per MIL-PRF-39035 to substitute a higher grade temperature characteristic or failure rate (QPL) than requested.
101
Military Trimmers
*Last letter in number is failure rate level. M = 1.0 %; P = 0.1 %; R = 0.01 %
**Model RJR26FA commercial model is 3266W. Model RJR26FB commercial model is 3266X.
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