PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

57664Transistor

Espey Mfg and Electronics Corp · NSN 5961-01-224-5665 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-224-5665 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-224-5665. Primary manufacturer part number: 57664.
Features
  • Transistor — FSC 5961
  • Current Rating Per Characteristic: 3.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 0.30 AMPERES MAXIMUM BASE CURRENT, DC
  • Mounting Method: THREADED STUD(S)
  • Semiconductor Material: SILICON
  • Voltage Rating in Volts Per Characteristic: 250.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 6.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC AND 250.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC
  • Mounting Facility Quantity: 1
  • Transfer Ratio: 20.0 MINIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
  • Overall Width Across Flats: 0.437 INCHES MAXIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-01-224-5665, 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 Espey Mfg and Electronics Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5961-01-224-5665
Primary Part Number57664
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerEspey Mfg and Electronics Corp
StatusACTIVE
Current Rating Per Characteristic3.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 0.30 AMPERES MAXIMUM BASE CURRENT, DC
Mounting MethodTHREADED STUD(S)
Semiconductor MaterialSILICON
Voltage Rating in Volts Per Characteristic250.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 6.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC AND 250.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC
Mounting Facility Quantity1
Transfer Ratio20.0 MINIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
Overall Width Across Flats0.437 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED CASE
Maximum Operating Temp Per Measurement Point200.0 CELSIUS AMBIENT AIR DEGC
Nominal Thread Size0.190 INCHES IN
Thread Series DesignatorUNF
Terminal Type and Quantity2 TAB, SOLDER LUG AND 1 WIRE HOOK
Power Rating Per Characteristic40.0 WATTS MAXIMUM TOTAL POWER DISSIPATION
Internal ConfigurationJUNCTION CONTACT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5331-00-807-8993MS28775-228 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5910-00-941-038957664 INTERCHANGEABLE
Bracket,capacitor
Unison Industries Llc
5360-01-023-748557664 INTERCHANGEABLE
Spring
Fmc Technologies Inc Div Material Handling Solutions
Cross-Reference Index
Part NumberManufacturer
57664 Espey Mfg and Electronics Corp (USA)
STA 9509 Silicon Transistor Corporation Dba Same (USA)
57664 Espey Mfg. & Electronics Corp. (USA)
40SH 138 Solitron Devices, Inc. (USA)
Related Parts
5331-00-807-8993INTERCHANGEABLE
O-RING
MS28775-228
5910-00-941-0389INTERCHANGEABLE
BRACKET,CAPACITOR
57664
5360-01-023-7485INTERCHANGEABLE
SPRING
57664

Frequently Asked Questions

What is NSN 5961-01-224-5665?

NSN 5961-01-224-5665 is a Transistor, manufactured by Espey Mfg and Electronics Corp, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-224-5665?

NSN 5961-01-224-5665 has 4 cross-referenced part numbers: 57664 (Espey Mfg and Electronics Corp), STA 9509 (Silicon Transistor Corporation Dba Same), 57664 (Espey Mfg. & Electronics Corp.), 40SH 138 (Solitron Devices, Inc.).

What NSN replaces 5961-01-224-5665?

There are 3 known substitutes for 5961-01-224-5665: 5331-00-807-8993, 5910-00-941-0389, 5360-01-023-7485. Verify interchangeability with system specifications before substitution.

What are the specifications of 57664?

Key specifications for 57664: Current Rating Per Characteristic: 3.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 0.30 AMPERES MAXIMUM BASE CURRENT, DC; Mounting Method: THREADED STUD(S); Semiconductor Material: SILICON; Voltage Rating in Volts Per Characteristic: 250.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 6.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC AND 250.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC. 16 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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