PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1850-0185Transistor

Hewlett-Packard Company Dba HP · NSN 5961-00-901-3271 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-901-3271 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-901-3271. Primary manufacturer part number: 1850-0185.
Features
  • Transistor — FSC 5961
  • Mounting Method: UNTHREADED HOLE(S)
  • Internal Configuration: JUNCTION CONTACT
  • Current Rating Per Characteristic: 5.00 AMPERES MAXIMUM BASE CURRENT, DC AND 5.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
  • Maximum Operating Temp Per Measurement Point: 100.0 CELSIUS JUNCTION DEGC
  • Semiconductor Material: GERMANIUM
  • Overall Diameter: 0.875 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD AND 1 CASE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-901-3271, 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 Hewlett-Packard Company Dba HP. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 17 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-00-901-3271
Primary Part Number1850-0185
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerHewlett-Packard Company Dba HP
StatusCANCELLED
Mounting MethodUNTHREADED HOLE(S)
Internal ConfigurationJUNCTION CONTACT
Current Rating Per Characteristic5.00 AMPERES MAXIMUM BASE CURRENT, DC AND 5.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Maximum Operating Temp Per Measurement Point100.0 CELSIUS JUNCTION DEGC
Semiconductor MaterialGERMANIUM
Overall Diameter0.875 INCHES MAXIMUM IN
Terminal Type and Quantity2 UNINSULATED WIRE LEAD AND 1 CASE
Voltage Rating in Volts Per Characteristic60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 30.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 30.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Features ProvidedHERMETICALLY SEALED CASE
Specification/standard Data80131-RELEASE2984 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Mounting Facility Quantity2
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5961-00-724-5108 INTERCHANGEABLE
Transistor
5961-00-833-6322 INTERCHANGEABLE
Transistor
5961-00-882-8680 INTERCHANGEABLE
Transistor
5961-00-882-8681Q0170 INTERCHANGEABLE
Transistor
Emcore Corporation Div Concord Division
5961-00-899-22472N1560 INTERCHANGEABLE
Transistor
Silicon Transistor Corporation Dba Same
5961-00-990-5370 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
1850-0185 Hewlett-Packard Company Dba HP (USA)
2N1545 Silicon Transistor Corporation Dba Same (USA)
2N1545 Solitron Devices, Inc. (USA)
2N1545 Freescale Semiconductor, Inc. (USA)
2N1545 Motorola Inc. Dba Integrated Information Systems Group (USA)
KS19171L2 Lucent Technologies Inc Dba Federal Marketing Group (USA)
2N1545 Electronic Industries Association
2N1545 United Page Inc (USA)
2N1545 Texas Instruments Incorporated (USA)
KS19171L2 American Telephone and Telegraph Co (USA)
345-124-013 L3harris Interstate Electronics Corporation (USA)
2N1545 Microsemi Ppc Inc (USA)
2N1545 Csr Industries Inc (USA)
2N1545 Electronic Transistors Corp (USA)
KS19171L2 Lucent Technologies Inc Corporate Headquarters (USA)
1850-0185 Keysight Technologies, Inc. (USA)
1850-0185 Keysight Technologies Inc (USA)
RELEASE2984 Electronic Industries Association
Related Parts
5961-00-724-5108INTERCHANGEABLE
TRANSISTOR
5961-00-833-6322INTERCHANGEABLE
TRANSISTOR
5961-00-882-8680INTERCHANGEABLE
TRANSISTOR
5961-00-882-8681INTERCHANGEABLE
TRANSISTOR
Q0170
5961-00-899-2247INTERCHANGEABLE
TRANSISTOR
2N1560
5961-00-990-5370INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-00-901-3271?

NSN 5961-00-901-3271 is a Transistor, manufactured by Hewlett-Packard Company Dba HP, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-901-3271?

NSN 5961-00-901-3271 has 18 cross-referenced part numbers: 1850-0185 (Hewlett-Packard Company Dba HP), 2N1545 (Silicon Transistor Corporation Dba Same), 2N1545 (Solitron Devices, Inc.), 2N1545 (Freescale Semiconductor, Inc.), 2N1545 (Motorola Inc. Dba Integrated Information Systems Group) and 13 more.

What NSN replaces 5961-00-901-3271?

There are 6 known substitutes for 5961-00-901-3271: 5961-00-724-5108, 5961-00-833-6322, 5961-00-882-8680 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1850-0185?

Key specifications for 1850-0185: Mounting Method: UNTHREADED HOLE(S); Internal Configuration: JUNCTION CONTACT; Current Rating Per Characteristic: 5.00 AMPERES MAXIMUM BASE CURRENT, DC AND 5.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC; Maximum Operating Temp Per Measurement Point: 100.0 CELSIUS JUNCTION DEGC. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-901-3271 still in active supply?

NSN 5961-00-901-3271 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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