PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

74999774Transistor

Kalmar AC Inc · NSN 5961-00-758-5541 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-758-5541 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-758-5541. Primary manufacturer part number: 74999774.
Features
  • Transistor — FSC 5961
  • Voltage Rating in Volts Per Characteristic: 60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER AND 30.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 30.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
  • Maximum Operating Temp Per Measurement Point: 110.0 CELSIUS JUNCTION DEGC
  • Power Rating Per Characteristic: 106.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
  • Features Provided: HERMETICALLY SEALED CASE
  • Mounting Facility Quantity: 2
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD AND 1 CASE
  • Current Rating Per Characteristic: 10.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-758-5541, 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 Kalmar AC Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, 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
NSN5961-00-758-5541
Primary Part Number74999774
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerKalmar AC Inc
StatusACTIVE
Voltage Rating in Volts Per Characteristic60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER AND 30.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 30.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
Maximum Operating Temp Per Measurement Point110.0 CELSIUS JUNCTION DEGC
Power Rating Per Characteristic106.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
Features ProvidedHERMETICALLY SEALED CASE
Mounting Facility Quantity2
Terminal Type and Quantity2 UNINSULATED WIRE LEAD AND 1 CASE
Current Rating Per Characteristic10.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Overall Diameter0.875 INCHES MAXIMUM IN
Semiconductor MaterialSILICON
Mounting MethodUNTHREADED HOLE(S)
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Internal ConfigurationJUNCTION CONTACT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5961-00-758-5815 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
SP2155 Gpd Optoelectronics Corp. Div Gpd Optoelectronics (USA)
SP2155-2 Freescale Semiconductor, Inc. (USA)
74999774 PRIMARY Kalmar AC Inc (USA)
SP2155 Freescale Semiconductor, Inc. (USA)
Related Parts
5961-00-758-5815INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-00-758-5541?

NSN 5961-00-758-5541 is a Transistor, manufactured by Kalmar AC Inc, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-758-5541?

NSN 5961-00-758-5541 has 4 cross-referenced part numbers: SP2155 (Gpd Optoelectronics Corp. Div Gpd Optoelectronics), SP2155-2 (Freescale Semiconductor, Inc.), 74999774 (Kalmar AC Inc), SP2155 (Freescale Semiconductor, Inc.).

What NSN replaces 5961-00-758-5541?

There is 1 known substitute for 5961-00-758-5541: 5961-00-758-5815. Verify interchangeability with system specifications before substitution.

What are the specifications of 74999774?

Key specifications for 74999774: Voltage Rating in Volts Per Characteristic: 60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER AND 30.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 30.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Maximum Operating Temp Per Measurement Point: 110.0 CELSIUS JUNCTION DEGC; Power Rating Per Characteristic: 106.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION; Features Provided: HERMETICALLY SEALED CASE. 14 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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