PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

STI163-04Transistor

Semiconductor Technology, Inc. Dba Semiconductor Technology Inc · NSN 5961-00-949-1173 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-949-1173 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-949-1173. Primary manufacturer part number: STI163-04.
Features
  • Transistor — FSC 5961
  • Mounting Method: THREADED STUD(S)
  • Electrode Internally-Electrically Connected to Case: COLLECTOR
  • Overall Width Across Flats: 0.875 INCHES MAXIMUM IN
  • Current Rating Per Characteristic: 7.50 AMPERES MAXIMUM BASE CURRENT, DC AND 20.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
  • Nominal Thread Size: 0.312 INCHES IN
  • Terminal Type and Quantity: 3 TAB, SOLDER LUG
  • Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-949-1173, 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 Semiconductor Technology, Inc. Dba Semiconductor Technology Inc. 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-949-1173
Primary Part NumberSTI163-04
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSemiconductor Technology, Inc. Dba Semiconductor Technology Inc
StatusACTIVE
Mounting MethodTHREADED STUD(S)
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Overall Width Across Flats0.875 INCHES MAXIMUM IN
Current Rating Per Characteristic7.50 AMPERES MAXIMUM BASE CURRENT, DC AND 20.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Nominal Thread Size0.312 INCHES IN
Terminal Type and Quantity3 TAB, SOLDER LUG
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Voltage Rating in Volts Per Characteristic55.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 40.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 15.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Semiconductor MaterialSILICON
Thread Series DesignatorUNF
Features ProvidedHERMETICALLY SEALED CASE
Internal ConfigurationJUNCTION CONTACT
Power Rating Per Characteristic200.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
Mounting Facility Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5930-00-083-298316-304 INTERCHANGEABLE
Switch,sensitive
Illinois Tool Works Inc
2530-00-127-86728S2589 INTERCHANGEABLE
Link,track Shoe,connecting
Caterpillar Inc Div Caterpillar Defense
5330-00-154-829616304 INTERCHANGEABLE
Seal,plain Encased
Harbormaster Marine, Inc
3455-00-189-916311890 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
Niagara Cutter Inc
9540-00-805-6452 INTERCHANGEABLE
Structural Section,special Shape
4730-01-028-8147 INTERCHANGEABLE
Elbow,pipe to Tube
2930-01-062-1675 INTERCHANGEABLE
Water Outlet,engine
5355-01-089-608416304 INTERCHANGEABLE
Knob
Jergens Inc Div Tooling Components Division
6525-01-111-903316304 INTERCHANGEABLE
Hanger,x-Ray Film
Wolf X-Ray, Corporation
6515-01-590-510602.207.135 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
163-04 Westinghouse Electric Corp Semiconductor Div (USA)
SPC163-04 Api Electronics, Inc. Dba Api Technologies Corp Div Api Technologies - Spectrum Microwave (USA)
STI163-04 PRIMARY Semiconductor Technology, Inc. Dba Semiconductor Technology Inc (USA)
SPC163-04 Solid Power Corp (USA)
Related Parts
5930-00-083-2983INTERCHANGEABLE
SWITCH,SENSITIVE
16-304
2530-00-127-8672INTERCHANGEABLE
LINK,TRACK SHOE,CONNECTING
8S2589
5330-00-154-8296INTERCHANGEABLE
SEAL,PLAIN ENCASED
16304
3455-00-189-9163INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
11890
9540-00-805-6452INTERCHANGEABLE
STRUCTURAL SECTION,SPECIAL SHAPE
4730-01-028-8147INTERCHANGEABLE
ELBOW,PIPE TO TUBE
2930-01-062-1675INTERCHANGEABLE
WATER OUTLET,ENGINE
5355-01-089-6084INTERCHANGEABLE
KNOB
16304
6525-01-111-9033INTERCHANGEABLE
HANGER,X-RAY FILM
16304
6515-01-590-5106INTERCHANGEABLE
SCREW,BONE
02.207.135
7025-01-596-8919INTERCHANGEABLE
INTERFACE UNIT,DATA TRANSFER
16304

Frequently Asked Questions

What is NSN 5961-00-949-1173?

NSN 5961-00-949-1173 is a Transistor, manufactured by Semiconductor Technology, Inc. Dba Semiconductor Technology Inc, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-949-1173?

NSN 5961-00-949-1173 has 4 cross-referenced part numbers: 163-04 (Westinghouse Electric Corp Semiconductor Div), SPC163-04 (Api Electronics, Inc. Dba Api Technologies Corp Div Api Technologies - Spectrum Microwave), STI163-04 (Semiconductor Technology, Inc. Dba Semiconductor Technology Inc), SPC163-04 (Solid Power Corp).

What NSN replaces 5961-00-949-1173?

There are 11 known substitutes for 5961-00-949-1173: 5930-00-083-2983, 2530-00-127-8672, 5330-00-154-8296 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of STI163-04?

Key specifications for STI163-04: Mounting Method: THREADED STUD(S); Electrode Internally-Electrically Connected to Case: COLLECTOR; Special Features: JUNCTION PATTERN ARRANGEMENT: NPN; Overall Width Across Flats: 0.875 INCHES MAXIMUM IN. 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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