PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RELEASE5221Semiconductor Device,thyristor

Electronic Industries Association · NSN 5961-00-018-9118 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-018-9118 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-018-9118. Primary manufacturer part number: RELEASE5221.
Features
  • Semiconductor Device,thyristor — FSC 5961
  • Internal Configuration: JUNCTION CONTACT
  • Terminal Type and Quantity: 1 THREADED STUD AND 2 TAB, SOLDER LUG
  • Power Rating Per Characteristic: 500.0 MILLIWATTS MAXIMUM PEAK GATE POWER DISSIPATION
  • Nominal Thread Size: 0.190 INCHES IN
  • Current Rating Per Characteristic: 5.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
  • Electrode Internally-Electrically Connected to Case: ANODE
  • Features Provided: HERMETICALLY SEALED CASE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Semiconductor Device,thyristor, cataloged under National Stock Number 5961-00-018-9118, 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 Electronic Industries Association. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-018-9118
Primary Part NumberRELEASE5221
Item NameSemiconductor Device,thyristor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerElectronic Industries Association
StatusACTIVE
Internal ConfigurationJUNCTION CONTACT
Terminal Type and Quantity1 THREADED STUD AND 2 TAB, SOLDER LUG
Power Rating Per Characteristic500.0 MILLIWATTS MAXIMUM PEAK GATE POWER DISSIPATION
Nominal Thread Size0.190 INCHES IN
Current Rating Per Characteristic5.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Electrode Internally-Electrically Connected to CaseANODE
Features ProvidedHERMETICALLY SEALED CASE
Specification/standard Data80131-RELEASE5221 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Maximum Operating Temp Per Measurement Point100.0 CELSIUS JUNCTION DEGC
Thread Series DesignatorUNF
Semiconductor MaterialSILICON
Mounting Facility Quantity1
Overall Width Across Flats0.437 INCHES MAXIMUM IN
Voltage Rating in Volts Per Characteristic500.0 MAXIMUM BREAKOVER VOLTAGE, DC
Mounting MethodTHREADED STUD(S)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5961-00-107-2677 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-115-2249 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-122-1189 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-126-1640 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-137-0613 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-163-3803 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-225-2132 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-238-2607 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-328-0827 INTERCHANGEABLE
Semiconductor Device,thyristor
5961-00-406-3073 INTERCHANGEABLE
Semiconductor Device,thyristor
Cross-Reference Index
Part NumberManufacturer
RELEASE5221 Electronic Industries Association
MCR2305-5 Freescale Semiconductor, Inc. (USA)
DMS 87127B Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
2N4171A Adelco Elektronik Gmbh (DEU)
2N4171 Freescale Semiconductor, Inc. (USA)
2N4171 Electronic Industries Association
2N4171A Lacon Electronic Gmbh (DEU)
Related Parts
5961-00-107-2677INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-115-2249INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-122-1189INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-126-1640INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-137-0613INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-163-3803INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-225-2132INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-238-2607INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-328-0827INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-406-3073INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5961-00-479-1454INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
353-6485-011
5961-00-482-0728INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR

Frequently Asked Questions

What is NSN 5961-00-018-9118?

NSN 5961-00-018-9118 is a Semiconductor Device,thyristor, manufactured by Electronic Industries Association, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-018-9118?

NSN 5961-00-018-9118 has 7 cross-referenced part numbers: RELEASE5221 (Electronic Industries Association), MCR2305-5 (Freescale Semiconductor, Inc.), DMS 87127B (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), 2N4171A (Adelco Elektronik Gmbh), 2N4171 (Freescale Semiconductor, Inc.) and 2 more.

What NSN replaces 5961-00-018-9118?

There are 12 known substitutes for 5961-00-018-9118: 5961-00-107-2677, 5961-00-115-2249, 5961-00-122-1189 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RELEASE5221?

Key specifications for RELEASE5221: Internal Configuration: JUNCTION CONTACT; Special Features: JUNCTION PATTERN ARRANGEMENT: PNPN; Terminal Type and Quantity: 1 THREADED STUD AND 2 TAB, SOLDER LUG; Power Rating Per Characteristic: 500.0 MILLIWATTS MAXIMUM PEAK GATE POWER DISSIPATION. 17 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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