PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

720-40254Transistor

Johnson E F Co Comco/communications Co Div · NSN 5961-00-492-1728 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-492-1728 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-492-1728. Primary manufacturer part number: 720-40254.
Features
  • Transistor — FSC 5961
  • Features Provided: HERMETICALLY SEALED CASE
  • Voltage Rating in Volts Per Characteristic: 32.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN AND 32.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN
  • Maximum Operating Temp Per Measurement Point: 100.0 CELSIUS JUNCTION DEGC
  • Mounting Facility Quantity: 2
  • Semiconductor Material: SILICON
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD AND 1 CASE
  • Mounting Method: UNTHREADED HOLE(S)
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-492-1728, 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 Johnson E F Co Comco/communications Co Div. Government technical data includes 10 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-492-1728
Primary Part Number720-40254
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerJohnson E F Co Comco/communications Co Div
StatusACTIVE
Features ProvidedHERMETICALLY SEALED CASE
Voltage Rating in Volts Per Characteristic32.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN AND 32.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN
Maximum Operating Temp Per Measurement Point100.0 CELSIUS JUNCTION DEGC
Mounting Facility Quantity2
Semiconductor MaterialSILICON
Terminal Type and Quantity2 UNINSULATED WIRE LEAD AND 1 CASE
Mounting MethodUNTHREADED HOLE(S)
Power Rating Per Characteristic666.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Current Rating Per Characteristic5.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 AMPERES MAXIMUM BASE CURRENT, DC
Overall Diameter0.875 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6110-00-229-5541100936 INTERCHANGEABLE
Regulator,voltage
Linde Material Handling North America Corporation
5950-00-645-7445845564 INTERCHANGEABLE
Coil,radio Frequency
Lockheed Martin Corporation Div Rms - Mitchel Field
2915-00-931-333740254 INTERCHANGEABLE
Valve Assembly,butterfly
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
5360-01-264-565240254 INTERCHANGEABLE
Spring,inner Column
L & R Manufacturing Company
5310-01-564-333640254 INTERCHANGEABLE
Washer,lock
Fastenal Company Dba Fastenal Co
5310-01-732-958710510745 INTERCHANGEABLE
Washer,lock
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
720-40254 Johnson E F Co Comco/communications Co Div (USA)
40254 Renesas Electronics America Inc (USA)
Related Parts
6110-00-229-5541INTERCHANGEABLE
REGULATOR,VOLTAGE
100936
5950-00-645-7445INTERCHANGEABLE
COIL,RADIO FREQUENCY
845564
2915-00-931-3337INTERCHANGEABLE
VALVE ASSEMBLY,BUTTERFLY
40254
5360-01-264-5652INTERCHANGEABLE
SPRING,INNER COLUMN
40254
5310-01-564-3336INTERCHANGEABLE
WASHER,LOCK
40254
5310-01-732-9587INTERCHANGEABLE
WASHER,LOCK
10510745

Frequently Asked Questions

What is NSN 5961-00-492-1728?

NSN 5961-00-492-1728 is a Transistor, manufactured by Johnson E F Co Comco/communications Co Div, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-492-1728?

NSN 5961-00-492-1728 has 2 cross-referenced part numbers: 720-40254 (Johnson E F Co Comco/communications Co Div), 40254 (Renesas Electronics America Inc).

What NSN replaces 5961-00-492-1728?

There are 6 known substitutes for 5961-00-492-1728: 6110-00-229-5541, 5950-00-645-7445, 2915-00-931-3337 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 720-40254?

Key specifications for 720-40254: Features Provided: HERMETICALLY SEALED CASE; Voltage Rating in Volts Per Characteristic: 32.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN AND 32.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN; Overall Length: 0.250 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN; Maximum Operating Temp Per Measurement Point: 100.0 CELSIUS JUNCTION DEGC. 11 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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