PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TIP121Transistor

Renesas Electronics America Inc · NSN 5961-01-122-7608 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-122-7608 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-122-7608. Primary manufacturer part number: TIP121.
Features
  • Transistor — FSC 5961
  • Voltage Rating in Volts Per Characteristic: 80.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN AND 80.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN
  • Internal Configuration: JUNCTION CONTACT-DARLINGTON CONNECTED
  • Semiconductor Material: SILICON
  • Electrode Internally-Electrically Connected to Case: COLLECTOR
  • Features Provided: HERMETICALLY SEALED CASE
  • Internal Junction Configuration: NPN
  • Mounting Facility Quantity: 1
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-01-122-7608, 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 Renesas Electronics America Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-122-7608
Primary Part NumberTIP121
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerRenesas Electronics America Inc
StatusACTIVE
Voltage Rating in Volts Per Characteristic80.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN AND 80.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN
Internal ConfigurationJUNCTION CONTACT-DARLINGTON CONNECTED
Semiconductor MaterialSILICON
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Features ProvidedHERMETICALLY SEALED CASE
Internal Junction ConfigurationNPN
Mounting Facility Quantity1
Power Rating Per Characteristic60.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Terminal Type and Quantity3 TAB, SOLDER LUG
Mounting MethodUNTHREADED HOLE(S)
Current Rating Per Characteristic8.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Joint Electronic Device Engineering Council/jedec/case Outline DesignationTO-220
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5961-01-037-8667TIP121 INTERCHANGEABLE
Transistor
Texas Instruments Incorporated
Cross-Reference Index
Part NumberManufacturer
TIP121 Renesas Electronics America Inc (USA)
RCA121 Renesas Electronics America Inc (USA)
Related Parts
5961-01-037-8667INTERCHANGEABLE
TRANSISTOR
TIP121

Frequently Asked Questions

What is NSN 5961-01-122-7608?

NSN 5961-01-122-7608 is a Transistor, manufactured by Renesas Electronics America Inc, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-122-7608?

NSN 5961-01-122-7608 has 2 cross-referenced part numbers: TIP121 (Renesas Electronics America Inc), RCA121 (Renesas Electronics America Inc).

What NSN replaces 5961-01-122-7608?

There is 1 known substitute for 5961-01-122-7608: 5961-01-037-8667. Verify interchangeability with system specifications before substitution.

What are the specifications of TIP121?

Key specifications for TIP121: Voltage Rating in Volts Per Characteristic: 80.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN AND 80.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN; Internal Configuration: JUNCTION CONTACT-DARLINGTON CONNECTED; Semiconductor Material: SILICON; Electrode Internally-Electrically Connected to Case: COLLECTOR. 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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