PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2N4221ATransistor

Freescale Semiconductor, Inc. · NSN 5961-00-617-3670 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-617-3670 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-617-3670. Primary manufacturer part number: 2N4221A.
Features
  • Transistor — FSC 5961
  • Terminal Type and Quantity: 4 UNINSULATED WIRE LEAD
  • Internal Configuration: FIELD EFFECT
  • Features Provided: HERMETICALLY SEALED CASE
  • Mounting Method: TERMINAL
  • Overall Diameter: 0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
  • Terminal Length: 0.500 INCHES MINIMUM IN
  • Current Rating Per Characteristic: 15.00 MILLIAMPERES MAXIMUM OFF-STATE CURRENT, DC AND 10.00 MILLIAMPERES MAXIMUM GATE CURRENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-617-3670, 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 Freescale Semiconductor, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-617-3670
Primary Part Number2N4221A
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerFreescale Semiconductor, Inc.
StatusACTIVE
Terminal Type and Quantity4 UNINSULATED WIRE LEAD
Internal ConfigurationFIELD EFFECT
Features ProvidedHERMETICALLY SEALED CASE
Mounting MethodTERMINAL
Overall Diameter0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
Terminal Length0.500 INCHES MINIMUM IN
Current Rating Per Characteristic15.00 MILLIAMPERES MAXIMUM OFF-STATE CURRENT, DC AND 10.00 MILLIAMPERES MAXIMUM GATE CURRENT
Semiconductor MaterialSILICON
Voltage Rating in Volts Per Characteristic30.0 MAXIMUM BREAKDOWN VOLTAGE, DRAIN-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE AND 30.0 MAXIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE
Terminal Circle Diameter0.100 INCHES NOMINAL IN
Power Rating Per Characteristic300.0 MILLIWATTS MAXIMUM TOTAL DEVICE DISSIPATION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5330-00-075-0663528063 INTERCHANGEABLE
Gasket
Honeywell International Inc. Div Aerospace - Torrance
5961-00-083-2688 INTERCHANGEABLE
Transistor
5961-00-104-5855 INTERCHANGEABLE
Transistor
1620-00-309-1460528063 INTERCHANGEABLE
Positioner,piston,landing Gear
Goodrich Corporation
5961-00-483-60732N4222A INTERCHANGEABLE
Transistor
Interfet Corporation
5935-00-665-72707933 INTERCHANGEABLE
Connector,plug,electrical
Eby Group, Llc, the Dba Eby Company Div Eby Company
2520-00-974-9500 INTERCHANGEABLE
Carrier Clutch Bear
5340-01-374-84877933 INTERCHANGEABLE
Strike,catch
Carlisle & Finch Co
5940-01-694-7331062012 INTERCHANGEABLE
Terminal Box
Pat Equipment Corp Inc
Cross-Reference Index
Part NumberManufacturer
2N4221A Freescale Semiconductor, Inc. (USA)
528063 Fischbach and Moore Communications Div of Fischbach and Moore Inc (USA)
7933 Ballantine Laboratories Inc (USA)
2N4221A Electronic Industries Association
RELEASE5244 Electronic Industries Association
2N4221A Interfet Corporation (USA)
062-012 Trilithic, Inc. (USA)
10079330A Ballantine Laboratories Inc (USA)
Related Parts
5330-00-075-0663INTERCHANGEABLE
GASKET
528063
5961-00-083-2688INTERCHANGEABLE
TRANSISTOR
5961-00-104-5855INTERCHANGEABLE
TRANSISTOR
1620-00-309-1460INTERCHANGEABLE
POSITIONER,PISTON,LANDING GEAR
528063
5961-00-483-6073INTERCHANGEABLE
TRANSISTOR
2N4222A
5935-00-665-7270INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
7933
2520-00-974-9500INTERCHANGEABLE
CARRIER CLUTCH BEAR
5340-01-374-8487INTERCHANGEABLE
STRIKE,CATCH
7933
5940-01-694-7331INTERCHANGEABLE
TERMINAL BOX
062012

Frequently Asked Questions

What is NSN 5961-00-617-3670?

NSN 5961-00-617-3670 is a Transistor, manufactured by Freescale Semiconductor, Inc., classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-617-3670?

NSN 5961-00-617-3670 has 8 cross-referenced part numbers: 2N4221A (Freescale Semiconductor, Inc.), 528063 (Fischbach and Moore Communications Div of Fischbach and Moore Inc), 7933 (Ballantine Laboratories Inc), 2N4221A (Electronic Industries Association), RELEASE5244 (Electronic Industries Association) and 3 more.

What NSN replaces 5961-00-617-3670?

There are 9 known substitutes for 5961-00-617-3670: 5330-00-075-0663, 5961-00-083-2688, 5961-00-104-5855 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2N4221A?

Key specifications for 2N4221A: Terminal Type and Quantity: 4 UNINSULATED WIRE LEAD; Internal Configuration: FIELD EFFECT; Features Provided: HERMETICALLY SEALED CASE; Overall Length: 0.170 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN. 12 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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