PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CP643Transistor

Crystalonics, Inc. · NSN 5961-01-092-9738 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-092-9738 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-092-9738. Primary manufacturer part number: CP643.
Features
  • Transistor — FSC 5961
  • Terminal Circle Diameter: 0.190 INCHES MAXIMUM IN
  • Power Rating Per Characteristic: 2.0 WATTS MAXIMUM TOTAL POWER DISSIPATION
  • Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD
  • Maximum Operating Temp Per Measurement Point: 150.0 CELSIUS JUNCTION DEGC
  • Overall Diameter: 0.335 INCHES MAXIMUM IN
  • Semiconductor Material: SILICON
  • Current Rating Per Characteristic: 300.00 MILLIAMPERES MAXIMUM DRAIN CURRENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-01-092-9738, 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 Crystalonics, Inc.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-092-9738
Primary Part NumberCP643
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerCrystalonics, Inc.
StatusACTIVE
Terminal Circle Diameter0.190 INCHES MAXIMUM IN
Power Rating Per Characteristic2.0 WATTS MAXIMUM TOTAL POWER DISSIPATION
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Maximum Operating Temp Per Measurement Point150.0 CELSIUS JUNCTION DEGC
Overall Diameter0.335 INCHES MAXIMUM IN
Semiconductor MaterialSILICON
Current Rating Per Characteristic300.00 MILLIAMPERES MAXIMUM DRAIN CURRENT
Terminal Length0.500 INCHES MINIMUM IN
Voltage Rating in Volts Per Characteristic30.0 MAXIMUM BREAKDOWN VOLTAGE, DRAIN-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE AND 15.0 MAXIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE
Joint Electronic Device Engineering Council/jedec/case Outline DesignationTO-46
Internal ConfigurationFIELD EFFECT
Mounting MethodTERMINAL
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Features ProvidedHERMETICALLY SEALED CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2930-01-032-81688538R INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
Cross-Reference Index
Part NumberManufacturer
CP643 PRIMARY Crystalonics, Inc. (USA)
Related Parts
2930-01-032-8168INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
8538R

Frequently Asked Questions

What is NSN 5961-01-092-9738?

NSN 5961-01-092-9738 is a Transistor, manufactured by Crystalonics, Inc., classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-092-9738?

NSN 5961-01-092-9738 has 1 cross-referenced part number: CP643 (Crystalonics, Inc.).

What NSN replaces 5961-01-092-9738?

There is 1 known substitute for 5961-01-092-9738: 2930-01-032-8168. Verify interchangeability with system specifications before substitution.

What are the specifications of CP643?

Key specifications for CP643: Terminal Circle Diameter: 0.190 INCHES MAXIMUM IN; Power Rating Per Characteristic: 2.0 WATTS MAXIMUM TOTAL POWER DISSIPATION; Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD; Maximum Operating Temp Per Measurement Point: 150.0 CELSIUS JUNCTION DEGC. 15 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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