PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B12-12Transistor

Varian Associates Inc Communications Transistor Div · NSN 5961-01-071-9882 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-071-9882 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-071-9882. Primary manufacturer part number: B12-12.
Features
  • Transistor — FSC 5961
  • Material: CERAMIC ENCLOSURE
  • Power Rating Per Characteristic: 25.5 WATTS MAXIMUM TOTAL POWER DISSIPATION
  • Voltage Rating in Volts Per Characteristic: 36.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC WITH BASE SHORT-CIRCUITED TO EMITTER AND 18.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 4.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
  • Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC
  • Current Rating Per Characteristic: 2.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
  • 2 verified cross-references
  • Primary manufacturer: Varian Associates Inc Communications Transistor Div
Applications
  • Applications requiring Ceramic Enclosure construction
General Description

The Transistor, cataloged under National Stock Number 5961-01-071-9882, 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 Varian Associates Inc Communications Transistor Div. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-071-9882
Primary Part NumberB12-12
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerVarian Associates Inc Communications Transistor Div
StatusACTIVE
MaterialCERAMIC ENCLOSURE
Power Rating Per Characteristic25.5 WATTS MAXIMUM TOTAL POWER DISSIPATION
Voltage Rating in Volts Per Characteristic36.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC WITH BASE SHORT-CIRCUITED TO EMITTER AND 18.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 4.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Current Rating Per Characteristic2.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-017-2006 INTERCHANGEABLE
Bearing,needle
3110-00-112-5563295-12XA INTERCHANGEABLE
Bearing,roller,needle
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
3110-00-183-6730MS17131-23 INTERCHANGEABLE
Bearing,roller,needle
American Society for Testing and Materials Dba Astm International
5120-00-227-6702 INTERCHANGEABLE
Socket,socket Wrench
3110-00-231-4317B12F12F INTERCHANGEABLE
Bearing
Renbrandt, Inc.
5999-00-390-5861 INTERCHANGEABLE
Delay Line
3460-01-053-4338A24CTFPR4 INTERCHANGEABLE
Bar,boring Tool
Kennametal Inc. Div Charlotte Business Office
5365-01-086-3768B12-12 INTERCHANGEABLE
Spacer,sleeve
Roller Bearing Co of America, Inc Div Pic Design
3110-01-193-3377 INTERCHANGEABLE
Bearing,roller,needle
5120-01-350-1005B-1212 INTERCHANGEABLE
Socket,socket Wrench
Williams J H Industrial Products Inc
Cross-Reference Index
Part NumberManufacturer
019-004794 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
B12-12 PRIMARY Varian Associates Inc Communications Transistor Div (USA)
Related Parts
3110-00-017-2006INTERCHANGEABLE
BEARING,NEEDLE
3110-00-112-5563INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
295-12XA
3110-00-183-6730INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
MS17131-23
5120-00-227-6702INTERCHANGEABLE
SOCKET,SOCKET WRENCH
3110-00-231-4317INTERCHANGEABLE
BEARING
B12F12F
5999-00-390-5861INTERCHANGEABLE
DELAY LINE
3460-01-053-4338INTERCHANGEABLE
BAR,BORING TOOL
A24CTFPR4
5365-01-086-3768INTERCHANGEABLE
SPACER,SLEEVE
B12-12
3110-01-193-3377INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
5120-01-350-1005INTERCHANGEABLE
SOCKET,SOCKET WRENCH
B-1212
5930-01-555-3341INTERCHANGEABLE
SWITCH,ELECTRONIC
B1212

Frequently Asked Questions

What is NSN 5961-01-071-9882?

NSN 5961-01-071-9882 is a Transistor, manufactured by Varian Associates Inc Communications Transistor Div, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-071-9882?

NSN 5961-01-071-9882 has 2 cross-referenced part numbers: 019-004794 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), B12-12 (Varian Associates Inc Communications Transistor Div).

What NSN replaces 5961-01-071-9882?

There are 11 known substitutes for 5961-01-071-9882: 3110-00-017-2006, 3110-00-112-5563, 3110-00-183-6730 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B12-12?

Key specifications for B12-12: Material: CERAMIC ENCLOSURE; Power Rating Per Characteristic: 25.5 WATTS MAXIMUM TOTAL POWER DISSIPATION; Voltage Rating in Volts Per Characteristic: 36.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC WITH BASE SHORT-CIRCUITED TO EMITTER AND 18.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 4.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC. 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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