Part Number Ordering Information, example and explanation:
 
M39010/01-AR10JP where,
M39010
/01
-A
R10
J
P
Military Specification Number
(Conforming to MIL-PRF-39010)
Slash Sheet
Class Maximum Operating Temperature
Inductance Value
Inductance Tolerance
Failure Rate Level
 
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Part number ordering options are developed using the following criteria:
Detail Specification
 Description
MIL-PRF-39010/01
 Coils, Microminiature, Magnetically Shielded (Phenolic Core, Iron Sleeve)
MIL-PRF-39010/02
 Coils, Microminiature, Magnetically Shielded (Iron Core, Iron Sleeve)
MIL-PRF-39010/03
 Coils, Microminiature, Magnetically Shielded (Ferrite Core, Ferrite Sleeve)
MIL-PRF-39010/06
 Coils, Microminiature, Magnetically Shielded (Phenolic Core)
MIL-PRF-39010/07
 Coils, Microminiature, Magnetically Shielded (Powdered Iron Core)
 
Class
Character
Operating Temperature (Maximum)
 
Tolerance Character
Inductance
Tolerance (±%)
A
+105°C
 
J
5
B
+125°C
 
K
10
F
+150°C
 
L
20
 
Failure Rate Designator
Failure Rate Level (%/1000 hrs)
S
0.001
R
0.010
P
0.100
Inductance in microhenries (uH) is expressed by three characters.  For less than 10 uH, two digits represent significant figures and the letter "R" represents the decimal point location.  For values of 10 uH and over, the first two digits represent significant figures and the third digit represents the number of zeroes to follow.

Examples:    R12 = 0.12 uH
                    3R9 = 3.9 uH
                    100 = 10 uH
                    272 = 2700 uH