PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

K304-18Transistor

Siliconix Incorporated Div Siliconix · NSN 5961-01-021-6001 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-021-6001 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-021-6001. Primary manufacturer part number: K304-18.
Features
  • Transistor — FSC 5961
  • Material: PLASTIC ENCLOSURE
  • Terminal Type and Quantity: 4 UNINSULATED WIRE LEAD
  • Voltage Rating in Volts Per Characteristic: 10.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 25.0 MAXIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE
  • Current Rating Per Characteristic: 10.00 MILLIAMPERES MAXIMUM GATE CURRENT
  • Terminal Circle Diameter: 0.100 INCHES NOMINAL IN
  • Power Rating Per Characteristic: 350.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
  • Mounting Method: TERMINAL
Applications
  • Applications requiring Plastic Enclosure construction
General Description

The Transistor, cataloged under National Stock Number 5961-01-021-6001, 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 Siliconix Incorporated Div Siliconix. Government technical data includes 11 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-021-6001
Primary Part NumberK304-18
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSiliconix Incorporated Div Siliconix
StatusACTIVE
MaterialPLASTIC ENCLOSURE
Terminal Type and Quantity4 UNINSULATED WIRE LEAD
Voltage Rating in Volts Per Characteristic10.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 25.0 MAXIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE
Current Rating Per Characteristic10.00 MILLIAMPERES MAXIMUM GATE CURRENT
Terminal Circle Diameter0.100 INCHES NOMINAL IN
Power Rating Per Characteristic350.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Mounting MethodTERMINAL
Semiconductor MaterialSILICON
Terminal Length0.500 INCHES MINIMUM IN
Internal ConfigurationFIELD EFFECT
Overall Diameter0.222 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5961-01-275-65771855-0425 INTERCHANGEABLE
Transistor
Keysight Technologies Inc
9515-01-459-2241A793-96,TYPE 304 INTERCHANGEABLE
Plate,floor,metal
American Society for Testing and Materials Dba Astm International
Cross-Reference Index
Part NumberManufacturer
E304 Siliconix Incorporated Div Siliconix (USA)
K304-18 PRIMARY Siliconix Incorporated Div Siliconix (USA)
Related Parts
5961-01-275-6577INTERCHANGEABLE
TRANSISTOR
1855-0425
9515-01-459-2241INTERCHANGEABLE
PLATE,FLOOR,METAL
A793-96,TYPE 304

Frequently Asked Questions

What is NSN 5961-01-021-6001?

NSN 5961-01-021-6001 is a Transistor, manufactured by Siliconix Incorporated Div Siliconix, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-021-6001?

NSN 5961-01-021-6001 has 2 cross-referenced part numbers: E304 (Siliconix Incorporated Div Siliconix), K304-18 (Siliconix Incorporated Div Siliconix).

What NSN replaces 5961-01-021-6001?

There are 2 known substitutes for 5961-01-021-6001: 5961-01-275-6577, 9515-01-459-2241. Verify interchangeability with system specifications before substitution.

What are the specifications of K304-18?

Key specifications for K304-18: Material: PLASTIC ENCLOSURE; Terminal Type and Quantity: 4 UNINSULATED WIRE LEAD; Voltage Rating in Volts Per Characteristic: 10.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 25.0 MAXIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE; Current Rating Per Characteristic: 10.00 MILLIAMPERES MAXIMUM GATE CURRENT. 12 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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