PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

QG21Semiconductor Device,diode

Nautel Limited · NSN 5961-00-724-5970 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-724-5970 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-724-5970. Primary manufacturer part number: QG21.
Features
  • Semiconductor Device,diode — FSC 5961
  • Test Data Document: 81349-MIL-S-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Specification/standard Data: 81349-MIL-S-19500/260 GOVERNMENT SPECIFICATION
  • Nominal Thread Size: 0.190 INCHES IN
  • Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS CASE DEGC
  • Current Rating Per Characteristic: 12.00 AMPERES MAXIMUM AVERAGE ON-STATE CURRENT, 180 DEGREES CONDUCTION ANGLE, AVERAGE OVER A FULL 60-HZ CYCLE
  • Thread Series Designator: UNF
  • Voltage Rating in Volts Per Characteristic: 480.0 MAXIMUM REVERSE VOLTAGE, PEAK
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Silicon Semiconductor construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-00-724-5970, is classified within Federal Supply Class 5961 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Nautel Limited. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-00-724-5970
Primary Part NumberQG21
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerNautel Limited
StatusCANCELLED
Test Data Document81349-MIL-S-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Specification/standard Data81349-MIL-S-19500/260 GOVERNMENT SPECIFICATION
Nominal Thread Size0.190 INCHES IN
Maximum Operating Temp Per Measurement Point200.0 CELSIUS CASE DEGC
Current Rating Per Characteristic12.00 AMPERES MAXIMUM AVERAGE ON-STATE CURRENT, 180 DEGREES CONDUCTION ANGLE, AVERAGE OVER A FULL 60-HZ CYCLE
Thread Series DesignatorUNF
Voltage Rating in Volts Per Characteristic480.0 MAXIMUM REVERSE VOLTAGE, PEAK
Mounting MethodTHREADED STUD(S)
Overall Width Across Flats0.424 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED CASE
Mounting Facility Quantity1
MaterialSILICON SEMICONDUCTOR
Terminal Type and Quantity1 THREADED STUD AND 1 TAB, SOLDER LUG
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5961-00-356-5312 INTERCHANGEABLE
Semiconductor Device,diode
3110-00-554-3238 INTERCHANGEABLE
Bearing,ball,annular
5961-00-676-9116 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-815-6815 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-888-9192305-0239 INTERCHANGEABLE
Semiconductor Device,diode
Cummins Power Generation Inc.
Cross-Reference Index
Part NumberManufacturer
QG21 Nautel Limited (CAN)
5961007245970 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
S177-2 Psi-Peripheral Support (USA)
305-0239 Cummins Power Generation Inc. (USA)
MIL-S-19500/260 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1N1204 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN1N1204 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN1N1204A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-19500/260 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN1N1204AA Adelco Elektronik Gmbh (DEU)
13211E4869-4 Cecom Lr Center (USA)
ST240P St-Semicon Inc (USA)
358B24 Cummins Power Generation Inc. (USA)
J1N1204A Texas Instruments Incorporated (USA)
JHP111-107 Hollingsworth John R Co (USA)
Related Parts
5961-00-356-5312INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
3110-00-554-3238INTERCHANGEABLE
BEARING,BALL,ANNULAR
5961-00-676-9116INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-815-6815INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-888-9192INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
305-0239

Frequently Asked Questions

What is NSN 5961-00-724-5970?

NSN 5961-00-724-5970 is a Semiconductor Device,diode, manufactured by Nautel Limited, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-724-5970?

NSN 5961-00-724-5970 has 15 cross-referenced part numbers: QG21 (Nautel Limited), 5961007245970 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), S177-2 (Psi-Peripheral Support), 305-0239 (Cummins Power Generation Inc.), MIL-S-19500/260 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 10 more.

What NSN replaces 5961-00-724-5970?

There are 5 known substitutes for 5961-00-724-5970: 5961-00-356-5312, 3110-00-554-3238, 5961-00-676-9116 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of QG21?

Key specifications for QG21: Test Data Document: 81349-MIL-S-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Specification/standard Data: 81349-MIL-S-19500/260 GOVERNMENT SPECIFICATION; Nominal Thread Size: 0.190 INCHES IN; Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS CASE DEGC. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-724-5970 still in active supply?

NSN 5961-00-724-5970 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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