PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9DTransistor

Lucent Technologies Inc Corporate Headquarters · NSN 5961-00-520-8434 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-520-8434 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-520-8434. Primary manufacturer part number: 9D.
Features
  • Transistor — FSC 5961
  • Semiconductor Material: GERMANIUM
  • Internal Configuration: JUNCTION CONTACT
  • Features Provided: HERMETICALLY SEALED CASE
  • Overall Diameter: 0.885 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 1 THREADED STUD AND 1 UNINSULATED WIRE LEAD
  • 5 verified cross-references
  • Primary manufacturer: Lucent Technologies Inc Corporate Headquarters
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-520-8434, 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 Lucent Technologies Inc Corporate Headquarters. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-520-8434
Primary Part Number9D
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerLucent Technologies Inc Corporate Headquarters
StatusACTIVE
Semiconductor MaterialGERMANIUM
Internal ConfigurationJUNCTION CONTACT
Features ProvidedHERMETICALLY SEALED CASE
Overall Diameter0.885 INCHES MAXIMUM IN
Terminal Type and Quantity1 THREADED STUD AND 1 UNINSULATED WIRE LEAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5965-00-170-52358109929 INTERCHANGEABLE
Microphone,dynamic
Us Army Aviation and Missile Command
4820-00-422-94949D 1-2IN INTERCHANGEABLE
Valve,check
Watts Regulator Company
4820-01-294-60059D-3/4 INTERCHANGEABLE
Valve,back Flow
Watts Regulator Company
Cross-Reference Index
Part NumberManufacturer
9DTRANSISTOR Lucent Technologies Inc Dba Federal Marketing Group (USA)
9D American Telephone and Telegraph Co (USA)
9D PRIMARY Lucent Technologies Inc Corporate Headquarters (USA)
9DTRANSIST0R American Telephone and Telegraph Co (USA)
9D Lucent Technologies Inc Dba Federal Marketing Group (USA)
Related Parts
5965-00-170-5235INTERCHANGEABLE
MICROPHONE,DYNAMIC
8109929
4820-00-422-9494INTERCHANGEABLE
VALVE,CHECK
9D 1-2IN
4820-01-294-6005INTERCHANGEABLE
VALVE,BACK FLOW
9D-3/4

Frequently Asked Questions

What is NSN 5961-00-520-8434?

NSN 5961-00-520-8434 is a Transistor, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-520-8434?

NSN 5961-00-520-8434 has 5 cross-referenced part numbers: 9DTRANSISTOR (Lucent Technologies Inc Dba Federal Marketing Group), 9D (American Telephone and Telegraph Co), 9D (Lucent Technologies Inc Corporate Headquarters), 9DTRANSIST0R (American Telephone and Telegraph Co), 9D (Lucent Technologies Inc Dba Federal Marketing Group).

What NSN replaces 5961-00-520-8434?

There are 3 known substitutes for 5961-00-520-8434: 5965-00-170-5235, 4820-00-422-9494, 4820-01-294-6005. Verify interchangeability with system specifications before substitution.

What are the specifications of 9D?

Key specifications for 9D: Semiconductor Material: GERMANIUM; Internal Configuration: JUNCTION CONTACT; Features Provided: HERMETICALLY SEALED CASE; Overall Length: 0.481 INCHES MAXIMUM IN. 7 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