PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1081Semiconductor Device,thyristor

Micro Uspd Inc · NSN 5961-00-057-4801 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-057-4801 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-057-4801. Primary manufacturer part number: A1081.
Features
  • Semiconductor Device,thyristor — FSC 5961
  • Terminal Length: 0.500 INCHES MINIMUM0.500 INCHES MINIMUM IN
  • Electrode Internally-Electrically Connected to Case: ANODEANODE
  • Overall Diameter: 0.370 INCHES MAXIMUM0.370 INCHES MAXIMUM IN
  • Features Provided: HERMETICALLY SEALED CASEHERMETICALLY SEALED CASE
  • Internal Configuration: JUNCTION CONTACTJUNCTION CONTACT
  • Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD3 UNINSULATED WIRE LEAD
  • Terminal Circle Diameter: 0.200 INCHES NOMINAL0.200 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Semiconductor Device,thyristor, cataloged under National Stock Number 5961-00-057-4801, 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 Micro Uspd Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-057-4801
Primary Part NumberA1081
Item NameSemiconductor Device,thyristor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerMicro Uspd Inc
StatusACTIVE
Terminal Length0.500 INCHES MINIMUM0.500 INCHES MINIMUM IN
Electrode Internally-Electrically Connected to CaseANODEANODE
Overall Diameter0.370 INCHES MAXIMUM0.370 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED CASEHERMETICALLY SEALED CASE
Internal ConfigurationJUNCTION CONTACTJUNCTION CONTACT
Terminal Type and Quantity3 UNINSULATED WIRE LEAD3 UNINSULATED WIRE LEAD
Terminal Circle Diameter0.200 INCHES NOMINAL0.200 INCHES NOMINAL IN
Voltage Rating in Volts Per Characteristic160.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 160.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 4.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN AND 4.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN AND 140.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN140.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN
Semiconductor MaterialSILICONSILICON
Transfer Ratio30.0 MINIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER AND 30.0 MINIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER AND 120.0 MAXIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER120.0 MAXIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
Joint Electronic Device Engineering Council/jedec/case Outline DesignationTO-9TO-9
Mounting MethodTERMINALTERMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5330-00-255-6663 INTERCHANGEABLE
Packing,preformed
1680-00-858-065914-76045-00 INTERCHANGEABLE
Cam Assembly
Curtiss-Wright Controls, Inc. Div Actuation Division
5961-00-998-19231854-0023 INTERCHANGEABLE
Transistor
Keysight Technologies Inc
1680-01-107-7680 INTERCHANGEABLE
Solenoid
3040-01-166-8891281800C92 INTERCHANGEABLE
Ball Joint
Navistar Intl Corp Truck Br Ohio Plant
3040-01-373-8436160-A-1081-B INTERCHANGEABLE
Shaft,straight
Ship Street Capital, Llc Dba Edson Corporation
Cross-Reference Index
Part NumberManufacturer
A1081 Micro Uspd Inc (USA)
472-0263-001 The Boeing Company Div Legacy Boeing Hb1 (USA)
958474-305 The Boeing Company Div Legacy Boeing Hb1 (USA)
A1081 Teledyne Technologies Incorporated Dba Teledyne Microelectronic Technologies Div Teledyne Microelectronics (USA)
SW1002 Gilbert Engineering Co Inc/incon Sub of Transitron Electronic Corp (USA)
958-474-305 The Boeing Company Div Legacy Boeing Hb1 (USA)
Related Parts
5330-00-255-6663INTERCHANGEABLE
PACKING,PREFORMED
1680-00-858-0659INTERCHANGEABLE
CAM ASSEMBLY
14-76045-00
5961-00-998-1923INTERCHANGEABLE
TRANSISTOR
1854-0023
1680-01-107-7680INTERCHANGEABLE
SOLENOID
3040-01-166-8891INTERCHANGEABLE
BALL JOINT
281800C92
3040-01-373-8436INTERCHANGEABLE
SHAFT,STRAIGHT
160-A-1081-B

Frequently Asked Questions

What is NSN 5961-00-057-4801?

NSN 5961-00-057-4801 is a Semiconductor Device,thyristor, manufactured by Micro Uspd Inc, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-057-4801?

NSN 5961-00-057-4801 has 6 cross-referenced part numbers: A1081 (Micro Uspd Inc), 472-0263-001 (The Boeing Company Div Legacy Boeing Hb1), 958474-305 (The Boeing Company Div Legacy Boeing Hb1), A1081 (Teledyne Technologies Incorporated Dba Teledyne Microelectronic Technologies Div Teledyne Microelectronics), SW1002 (Gilbert Engineering Co Inc/incon Sub of Transitron Electronic Corp) and 1 more.

What NSN replaces 5961-00-057-4801?

There are 6 known substitutes for 5961-00-057-4801: 5330-00-255-6663, 1680-00-858-0659, 5961-00-998-1923 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A1081?

Key specifications for A1081: Terminal Length: 0.500 INCHES MINIMUM0.500 INCHES MINIMUM IN; Electrode Internally-Electrically Connected to Case: ANODEANODE; Special Features: JUNCTION PATTERN ARRANGEMENT: NPNJUNCTION PATTERN ARRANGEMENT: NPN; Overall Diameter: 0.370 INCHES MAXIMUM0.370 INCHES MAXIMUM IN. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com