PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J503Semiconductor Device,diode

Siliconix Incorporated Div Siliconix · NSN 5961-01-408-6782 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-408-6782 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-408-6782. Primary manufacturer part number: J503.
Features
  • Semiconductor Device,diode — FSC 5961
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Material: PLASTIC ENCLOSURE
  • Material: SILICON SEMICONDUCTOR
  • Mounting Method: TERMINAL
  • Current Rating Per Characteristic: 20.00 MILLIAMPERES MAXIMUM FORWARD CURRENT, DC AND 50.00 MILLIAMPERES MAXIMUM REVERSE CURRENT, INSTANTANEOUS
  • Power Rating Per Characteristic: 360.0 MILLIWATTS MAXIMUM TOTAL DEVICE DISSIPATION
  • Capacitance Rating in Picofarads: 2.0 NOMINAL
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Plastic Enclosure construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-408-6782, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-408-6782
Primary Part NumberJ503
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSiliconix Incorporated Div Siliconix
StatusACTIVE
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
MaterialPLASTIC ENCLOSURE
MaterialSILICON SEMICONDUCTOR
Mounting MethodTERMINAL
Current Rating Per Characteristic20.00 MILLIAMPERES MAXIMUM FORWARD CURRENT, DC AND 50.00 MILLIAMPERES MAXIMUM REVERSE CURRENT, INSTANTANEOUS
Power Rating Per Characteristic360.0 MILLIWATTS MAXIMUM TOTAL DEVICE DISSIPATION
Capacitance Rating in Picofarads2.0 NOMINAL
Maximum Operating Temp Per Measurement Point135.0 CELSIUS AMBIENT AIR DEGC
Voltage Rating in Volts Per Characteristic1.7 MAXIMUM LIMITING VOLTAGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5962-00-105-4623U6A995879X INTERCHANGEABLE
Microcircuit,digital
Fairchild Semiconductor Corp
2805-00-939-9822230049 INTERCHANGEABLE
Baffle,engine Head
Kohler Co Engine Plant Div
6105-01-281-0300JB-503 INTERCHANGEABLE
Motor,alternating Current
Security Engineered Machinery Co., Inc.
3040-01-356-4640230049 INTERCHANGEABLE
Cylinder,actuating,linear
Allied Systems Company Dba Allied Systems Co
6750-01-427-2502 INTERCHANGEABLE
Film,photographic
4730-01-571-9623230049N INTERCHANGEABLE
Plug,pipe
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
Cross-Reference Index
Part NumberManufacturer
230049 Wavetek Rf Products, Inc (USA)
J503 PRIMARY Siliconix Incorporated Div Siliconix (USA)
Related Parts
5962-00-105-4623INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
U6A995879X
2805-00-939-9822INTERCHANGEABLE
BAFFLE,ENGINE HEAD
230049
6105-01-281-0300INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
JB-503
3040-01-356-4640INTERCHANGEABLE
CYLINDER,ACTUATING,LINEAR
230049
6750-01-427-2502INTERCHANGEABLE
FILM,PHOTOGRAPHIC
4730-01-571-9623INTERCHANGEABLE
PLUG,PIPE
230049N

Frequently Asked Questions

What is NSN 5961-01-408-6782?

NSN 5961-01-408-6782 is a Semiconductor Device,diode, manufactured by Siliconix Incorporated Div Siliconix, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-408-6782?

NSN 5961-01-408-6782 has 2 cross-referenced part numbers: 230049 (Wavetek Rf Products, Inc), J503 (Siliconix Incorporated Div Siliconix).

What NSN replaces 5961-01-408-6782?

There are 6 known substitutes for 5961-01-408-6782: 5962-00-105-4623, 2805-00-939-9822, 6105-01-281-0300 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J503?

Key specifications for J503: Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Material: PLASTIC ENCLOSURE; Material: SILICON SEMICONDUCTOR; End Item Identification: 6625-01-363-6212. 13 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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