PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

128Socket Transistor

Tdk-Lambda Americas Inc. Div High Power Division · NSN 5961-00-840-0534 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-840-0534 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-840-0534. Primary manufacturer part number: 128.
Features
  • Socket Transistor — FSC 5961
  • 3 verified cross-references
  • Primary manufacturer: Tdk-Lambda Americas Inc. Div High Power Division
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Socket Transistor, cataloged under National Stock Number 5961-00-840-0534, 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 Tdk-Lambda Americas Inc. Div High Power Division. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSocket Transistor
FSC / FSG5961 — No Item Name Available (FSG 59)
ManufacturersTdk-Lambda Americas Inc. Div High Power Division (CAGE 89022); Elco Resistor Co (CAGE 73690)
Technical Specifications
ParameterValue
NSN5961-00-840-0534
Primary Part Number128
Item NameSocket Transistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerTdk-Lambda Americas Inc. Div High Power Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3040-00-020-934910-1663 INTERCHANGEABLE
Ball Joint
Roller Bearing Company of America, Inc.
4720-00-532-5295101663 INTERCHANGEABLE
Hose Assembly,nonmetallic
Senior Operations Llc Div Senior Aerospace Ssp
6220-00-774-5347503R12 INTERCHANGEABLE
Light Assembly,clearance Marker
Load King, Llc Div Load King
5950-00-929-0459 INTERCHANGEABLE
Transformer,pulse
3040-00-942-253078623 INTERCHANGEABLE
Ball Joint
Rbc Transport Dynamics Corp Div Rbc Transport Dynamics
6625-00-980-2755101663 INTERCHANGEABLE
Fixture,test,electrical-Electron
L3harris Technologies, Inc Div Space & Airborne Systems
5330-01-197-3204101663, 7NL2FA INTERCHANGEABLE
Seal,plain
Ohio Medical Corporation Dba Ohio Medical Corp Ltd U.k
5330-01-289-497610-16-63 INTERCHANGEABLE
Felt,mechanical,preformed
Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products
9905-01-689-3325101663 INTERCHANGEABLE
Plate,instruction
Iris Technology Corporation Dba Iris Technology Corp
Cross-Reference Index
Part NumberManufacturer
101663 Tdk-Lambda Americas Inc. Div High Power Division (USA)
3305 Elco Resistor Co
128 PRIMARY Tdk-Lambda Americas Inc. Div High Power Division (USA)
Related Parts
3040-00-020-9349INTERCHANGEABLE
BALL JOINT
10-1663
4720-00-532-5295INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
101663
6220-00-774-5347INTERCHANGEABLE
LIGHT ASSEMBLY,CLEARANCE MARKER
503R12
5950-00-929-0459INTERCHANGEABLE
TRANSFORMER,PULSE
3040-00-942-2530INTERCHANGEABLE
BALL JOINT
78623
6625-00-980-2755INTERCHANGEABLE
FIXTURE,TEST,ELECTRICAL-ELECTRON
101663
5330-01-197-3204INTERCHANGEABLE
SEAL,PLAIN
101663, 7NL2FA
5330-01-289-4976INTERCHANGEABLE
FELT,MECHANICAL,PREFORMED
10-16-63
9905-01-689-3325INTERCHANGEABLE
PLATE,INSTRUCTION
101663

Frequently Asked Questions

What is NSN 5961-00-840-0534?

NSN 5961-00-840-0534 is a Socket Transistor, manufactured by Tdk-Lambda Americas Inc. Div High Power Division, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-840-0534?

NSN 5961-00-840-0534 has 3 cross-referenced part numbers: 101663 (Tdk-Lambda Americas Inc. Div High Power Division), 3305 (Elco Resistor Co), 128 (Tdk-Lambda Americas Inc. Div High Power Division).

What NSN replaces 5961-00-840-0534?

There are 9 known substitutes for 5961-00-840-0534: 3040-00-020-9349, 4720-00-532-5295, 6220-00-774-5347 and 6 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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