PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3SI2Semiconductor Device,diode

Semtech Corporation · NSN 5961-01-027-6959 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-027-6959 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-027-6959. Primary manufacturer part number: 3SI2.
Features
  • Semiconductor Device,diode — FSC 5961
  • Material: GLASS ENCLOSURE
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Voltage Rating in Volts Per Characteristic: 200.0 MAXIMUM REVERSE VOLTAGE, PEAK
  • Terminal Length: 1.000 INCHES MINIMUM IN
  • Mounting Method: TERMINAL
  • Overall Diameter: 0.200 INCHES MAXIMUM IN
  • Features Provided: HERMETICALLY SEALED CASE
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Glass Enclosure construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-027-6959, 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 Semtech Corporation. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN5961-01-027-6959
Primary Part Number3SI2
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSemtech Corporation
StatusACTIVE
MaterialGLASS ENCLOSURE
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
Voltage Rating in Volts Per Characteristic200.0 MAXIMUM REVERSE VOLTAGE, PEAK
Terminal Length1.000 INCHES MINIMUM IN
Mounting MethodTERMINAL
Overall Diameter0.200 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED CASE
Maximum Operating Temp Per Measurement Point150.0 CELSIUS JUNCTION DEGC
Current Rating Per Characteristic300.00 AMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE
MaterialSILICON SEMICONDUCTOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6685-01-109-70352503096 INTERCHANGEABLE
Thermometer,self-Indicating,bime
Evac North America Inc
6625-01-676-60323S-1(2) INTERCHANGEABLE
Voltmeter
Naval Surface Warfare Center Phildelphia Division
Cross-Reference Index
Part NumberManufacturer
3S12 Semtech Corporation (USA)
587566-2 Raytheon Company Div Corp (USA)
3SI2 PRIMARY Semtech Corporation (USA)
Related Parts
6685-01-109-7035INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
2503096
6625-01-676-6032INTERCHANGEABLE
VOLTMETER
3S-1(2)

Frequently Asked Questions

What is NSN 5961-01-027-6959?

NSN 5961-01-027-6959 is a Semiconductor Device,diode, manufactured by Semtech Corporation, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-027-6959?

NSN 5961-01-027-6959 has 3 cross-referenced part numbers: 3S12 (Semtech Corporation), 587566-2 (Raytheon Company Div Corp), 3SI2 (Semtech Corporation).

What NSN replaces 5961-01-027-6959?

There are 2 known substitutes for 5961-01-027-6959: 6685-01-109-7035, 6625-01-676-6032. Verify interchangeability with system specifications before substitution.

What are the specifications of 3SI2?

Key specifications for 3SI2: Material: GLASS ENCLOSURE; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Voltage Rating in Volts Per Characteristic: 200.0 MAXIMUM REVERSE VOLTAGE, PEAK; Terminal Length: 1.000 INCHES MINIMUM IN. 11 total characteristics are documented in the Federal Logistics Information System.

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