PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SES153-20Transistor

Semitronics Corp · NSN 5961-00-018-9661 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-018-9661 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-018-9661. Primary manufacturer part number: SES153-20.
Features
  • Transistor — FSC 5961
  • Voltage Rating in Volts Per Characteristic: 225.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 200.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 25.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
  • Current Rating Per Characteristic: 7.50 AMPERES MAXIMUM COLLECTOR CURRENT, DC
  • Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC
  • Nominal Thread Size: 0.250 INCHES IN
  • Terminal Type and Quantity: 3 TAB, SOLDER LUG
  • Internal Configuration: JUNCTION CONTACT
  • Power Rating Per Characteristic: 200.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-018-9661, 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 Semitronics Corp. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-00-018-9661
Primary Part NumberSES153-20
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSemitronics Corp
StatusCANCELLED
Voltage Rating in Volts Per Characteristic225.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 200.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 25.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Current Rating Per Characteristic7.50 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Nominal Thread Size0.250 INCHES IN
Terminal Type and Quantity3 TAB, SOLDER LUG
Internal ConfigurationJUNCTION CONTACT
Power Rating Per Characteristic200.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
Features ProvidedHERMETICALLY SEALED CASE
Semiconductor MaterialSILICON
Mounting MethodTHREADED STUD(S)
Mounting Facility Quantity1
Overall Width Across Flats0.564 INCHES MAXIMUM IN
Thread Series DesignatorUNF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5136-00-729-568454321 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
2090-01-032-8995 INTERCHANGEABLE
Slot Heater
3030-01-209-039413321 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
5305-01-647-823315320 INTERCHANGEABLE
Screw,cap,hexagon Head
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
SES153-20 Semitronics Corp (USA)
16054-008 Dynalec Corporation (USA)
153-20 Westinghouse Electric Corp Semiconductor Div (USA)
5961PL1335851 Jednolity Indeks Materialowy - Uniform Material Index (POL)
NES153-20 Microsemi Corp - Massachusetts (USA)
SPC153-20 Solid Power Corp (USA)
ST1070 Semiconductor Technology, Inc. Dba Semiconductor Technology Inc (USA)
Related Parts
5136-00-729-5684INTERCHANGEABLE
TAP,THREAD CUTTING
54321
2090-01-032-8995INTERCHANGEABLE
SLOT HEATER
3030-01-209-0394INTERCHANGEABLE
BELT,V
13321
5305-01-647-8233INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
15320

Frequently Asked Questions

What is NSN 5961-00-018-9661?

NSN 5961-00-018-9661 is a Transistor, manufactured by Semitronics Corp, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-018-9661?

NSN 5961-00-018-9661 has 7 cross-referenced part numbers: SES153-20 (Semitronics Corp), 16054-008 (Dynalec Corporation), 153-20 (Westinghouse Electric Corp Semiconductor Div), 5961PL1335851 (Jednolity Indeks Materialowy - Uniform Material Index), NES153-20 (Microsemi Corp - Massachusetts) and 2 more.

What NSN replaces 5961-00-018-9661?

There are 4 known substitutes for 5961-00-018-9661: 5136-00-729-5684, 2090-01-032-8995, 3030-01-209-0394 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SES153-20?

Key specifications for SES153-20: Voltage Rating in Volts Per Characteristic: 225.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 200.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 25.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN; Current Rating Per Characteristic: 7.50 AMPERES MAXIMUM COLLECTOR CURRENT, DC; Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC; Nominal Thread Size: 0.250 INCHES IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-018-9661 still in active supply?

NSN 5961-00-018-9661 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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