PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MR504Semiconductor Device,diode

Solid State Inc · NSN 5961-01-087-9950 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-087-9950 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-087-9950. Primary manufacturer part number: MR504.
Features
  • Semiconductor Device,diode — FSC 5961
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Mounting Method: TERMINAL
  • Voltage Rating in Volts Per Characteristic: 400.0 MAXIMUM REVERSE VOLTAGE, INSTANTANEOUS AND 400.0 MAXIMUM REPETITIVE PEAK REVERSE VOLTAGE
  • Material: GLASS OR PLASTIC ENCLOSURE
  • Material: SILICON SEMICONDUCTOR
  • Current Rating Per Characteristic: 70.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT AND 3.00 AMPERES NOMINAL FORWARD CURRENT, AVERAGE
  • Terminal Length: 0.748 INCHES MINIMUM IN
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Glass or Plastic Enclosure construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-087-9950, 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 Solid State Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-01-087-9950
Primary Part NumberMR504
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSolid State Inc
StatusCANCELLED
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
Mounting MethodTERMINAL
Voltage Rating in Volts Per Characteristic400.0 MAXIMUM REVERSE VOLTAGE, INSTANTANEOUS AND 400.0 MAXIMUM REPETITIVE PEAK REVERSE VOLTAGE
MaterialGLASS OR PLASTIC ENCLOSURE
MaterialSILICON SEMICONDUCTOR
Current Rating Per Characteristic70.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT AND 3.00 AMPERES NOMINAL FORWARD CURRENT, AVERAGE
Terminal Length0.748 INCHES MINIMUM IN
Overall Diameter0.251 INCHES MAXIMUM IN
Maximum Operating Temp Per Measurement Point175.0 CELSIUS JUNCTION DEGC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
3110-00-109-1179 INTERCHANGEABLE
Bearing,ball,annular
3110-00-156-7616113275-6 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
5930-00-256-847223-1142 INTERCHANGEABLE
Switch,sensitive
Illinois Tool Works Inc Dba Illinois Tool Works Inc Div Illinois Tool Works
5910-00-537-5449SM-B-342047 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6630-00-703-98377039837 INTERCHANGEABLE
Viscometer,oil Pan
U S Army Tank Automotive Command Amsta-Im-Mm
5940-01-014-32505411-40 INTERCHANGEABLE
Terminal,lug
Seastrom Manufacturing Co Inc
7310-01-136-917120217 INTERCHANGEABLE
Funnel Assembly
Bunn-O-Matic Corporation Div Government Sales
5365-01-213-972020217 INTERCHANGEABLE
Spacer
Drc Acquisition Inc
6515-01-565-702959000 INTERCHANGEABLE
Speculum,vaginal
Welch Allyn, Inc.
5120-01-615-8556J30809 INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
Cross-Reference Index
Part NumberManufacturer
2887.121 Saval B.v. (NLD)
20217 Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
MR504 Freescale Semiconductor, Inc. (USA)
MR504 On Semiconductor Corporation (USA)
2887.121 Rosenbauer Brandweertechniek (NLD)
V332 L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division (USA)
V331 L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division (USA)
11784694 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
DMS 90050B Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
66-396931 Communications & Power Industries Llc Div Microwave Power Products Division (USA)
MR504 PRIMARY Solid State Inc (USA)
Related Parts
3110-00-109-1179INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-156-7616INTERCHANGEABLE
BEARING,BALL,ANNULAR
113275-6
5930-00-256-8472INTERCHANGEABLE
SWITCH,SENSITIVE
23-1142
5910-00-537-5449INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
SM-B-342047
6630-00-703-9837INTERCHANGEABLE
VISCOMETER,OIL PAN
7039837
5940-01-014-3250INTERCHANGEABLE
TERMINAL,LUG
5411-40
7310-01-136-9171INTERCHANGEABLE
FUNNEL ASSEMBLY
20217
5365-01-213-9720INTERCHANGEABLE
SPACER
20217
6515-01-565-7029INTERCHANGEABLE
SPECULUM,VAGINAL
59000
5120-01-615-8556INTERCHANGEABLE
WRENCH,OPEN END
J30809

Frequently Asked Questions

What is NSN 5961-01-087-9950?

NSN 5961-01-087-9950 is a Semiconductor Device,diode, manufactured by Solid State Inc, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-01-087-9950?

NSN 5961-01-087-9950 has 11 cross-referenced part numbers: 2887.121 (Saval B.v.), 20217 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), MR504 (Freescale Semiconductor, Inc.), MR504 (On Semiconductor Corporation), 2887.121 (Rosenbauer Brandweertechniek) and 6 more.

What NSN replaces 5961-01-087-9950?

There are 10 known substitutes for 5961-01-087-9950: 3110-00-109-1179, 3110-00-156-7616, 5930-00-256-8472 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MR504?

Key specifications for MR504: Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Mounting Method: TERMINAL; Voltage Rating in Volts Per Characteristic: 400.0 MAXIMUM REVERSE VOLTAGE, INSTANTANEOUS AND 400.0 MAXIMUM REPETITIVE PEAK REVERSE VOLTAGE; Material: GLASS OR PLASTIC ENCLOSURE. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-01-087-9950 still in active supply?

NSN 5961-01-087-9950 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com