PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

851956Semiconductor Device,diode

Fluke Corp · NSN 5961-01-381-7789 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-381-7789 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-381-7789. Primary manufacturer part number: 851956.
Features
  • Semiconductor Device,diode — FSC 5961
  • Material: SILICON SEMICONDUCTOR
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Material: PLASTIC OR CERAMIC ENCLOSURE
  • Voltage Rating in Volts Per Characteristic: 6.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER
  • Mounting Method: TERMINAL
  • 3 verified cross-references
  • Primary manufacturer: Fluke Corp
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 5961-01-381-7789, 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 Fluke Corp. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-381-7789
Primary Part Number851956
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerFluke Corp
StatusACTIVE
MaterialSILICON SEMICONDUCTOR
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
MaterialPLASTIC OR CERAMIC ENCLOSURE
Voltage Rating in Volts Per Characteristic6.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER
Mounting MethodTERMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5961-00-101-23861906-0006 INTERCHANGEABLE
Rectifier,semiconductor Device,u
Keysight Technologies Inc
2940-00-586-47921665311C1 INTERCHANGEABLE
Filter Element,fluid
Navistar Intl Corp Truck Br Ohio Plant
4720-01-322-6620PF-20 INTERCHANGEABLE
Hose,nonmetallic
B & B Tritech Inc.
Cross-Reference Index
Part NumberManufacturer
PF20 Micross Corpus Christi, S.a. De C.v. Div Semtech Corpus Christi Corporation (MEX)
851956 PRIMARY Fluke Corp (USA)
PF20 Semtech Corporation (USA)
Related Parts
5961-00-101-2386INTERCHANGEABLE
RECTIFIER,SEMICONDUCTOR DEVICE,U
1906-0006
2940-00-586-4792INTERCHANGEABLE
FILTER ELEMENT,FLUID
1665311C1
4720-01-322-6620INTERCHANGEABLE
HOSE,NONMETALLIC
PF-20

Frequently Asked Questions

What is NSN 5961-01-381-7789?

NSN 5961-01-381-7789 is a Semiconductor Device,diode, manufactured by Fluke Corp, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-381-7789?

NSN 5961-01-381-7789 has 3 cross-referenced part numbers: PF20 (Micross Corpus Christi, S.a. De C.v. Div Semtech Corpus Christi Corporation), 851956 (Fluke Corp), PF20 (Semtech Corporation).

What NSN replaces 5961-01-381-7789?

There are 3 known substitutes for 5961-01-381-7789: 5961-00-101-2386, 2940-00-586-4792, 4720-01-322-6620. Verify interchangeability with system specifications before substitution.

What are the specifications of 851956?

Key specifications for 851956: Material: SILICON SEMICONDUCTOR; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Material: PLASTIC OR CERAMIC ENCLOSURE; Voltage Rating in Volts Per Characteristic: 6.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER. 6 total characteristics are documented in the Federal Logistics Information System.

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