NASA Electronic Parts and Packaging Program

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Other Space Agency
EEE Parts Selection Listings

European Space Agency (ESA)

Japan Aerospace Exploration Agency (JAXA)

NASA Parts Selection List (NPSL)
Diodes
 
MIL-PRF-19500 Part Number Explanation

Example: JAN#%1N3891AR-1 where,

JAN Joint Army and Navy (JAN) Military Part Designator
# Quality Level
% Indicates Radiation Hardness Assurance (RHA) Level
1N Component designator for Diodes
3891 Identification Number
AR Suffix Letters
-1 Indicates metallurgical bond

Quality Level, (#)
JANS or S Highest Quality Level 1
TXV Level 2
TX  

Radiation Hardness Assurance Level, (%)

RHA Designator Total Ionizing Dose (RAD (Si)) Neutron Fluence (n/cm2)
M 3 x 103 2 x 1012
D 1 x 104 2 x 1012
L 5 x 104 2 x 1012
R 1 x 105 2 x 1012
F 3 x 105 2 x 1012
G 6 x 105 2 x 1012
H 1 x 106 2 x 1012

NOTE: Unless specifically stated within the parts selection tables of the NPSL, listing of a device technology herein does NOT imply/guarantee Radiation Hardness Assurance (RHA). Applications concerned with a device's ability to tolerate exposure to various forms of space radiation (e.g., total ionizing dose, single event effects, etc.) should be reviewed and have the device assessed by the Program's radiation assurance experts. The following resources may also be consulted for initial guidance:

NASA Goddard Radiation Effects and Analysis
Jet Propulsion Laboratory Radiation Effects

Suffix letters
A, B, C, etc Indicates a modified version which is substitutable for the basic numbered (non-suffix) device
M Indicates matching of specified parameters of separate devices
R Indicates reverse polarity packaging of the basic numbered device
L or S Indicates that the terminal leads are longer or shorter, respectively than those of the basic numbered device
U Indicates leaded or surface mounted devices
UR Indicates leaded or surface mounted (round end cap diodes)
US Indicates leaded or surface mounted (square end cap diodes)