PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N91Semiconductor Device,diode

Philips Ecg Inc Div of North American Philips Corp · NSN 5961-00-940-8580 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-940-8580 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-940-8580. Primary manufacturer part number: 1N91.
Features
  • Semiconductor Device,diode — FSC 5961
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY QUALITY CONTROLLED FOR POLARIS
  • Material: GERMANIUM SEMICONDUCTOR
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Features Provided: HERMETICALLY SEALED CASE
  • Overall Diameter: 0.375 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Philips Ecg Inc Div of North American Philips Corp
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Germanium Semiconductor construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-00-940-8580, 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 Philips Ecg Inc Div of North American Philips Corp. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-940-8580
Primary Part Number1N91
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerPhilips Ecg Inc Div of North American Philips Corp
StatusACTIVE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY QUALITY CONTROLLED FOR POLARIS
MaterialGERMANIUM SEMICONDUCTOR
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
Features ProvidedHERMETICALLY SEALED CASE
Overall Diameter0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5961-00-284-6016 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-577-6214 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-985-1764 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
1N91 Philips Ecg Inc Div of North American Philips Corp (USA)
Related Parts
5961-00-284-6016INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-577-6214INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-985-1764INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE

Frequently Asked Questions

What is NSN 5961-00-940-8580?

NSN 5961-00-940-8580 is a Semiconductor Device,diode, manufactured by Philips Ecg Inc Div of North American Philips Corp, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-940-8580?

NSN 5961-00-940-8580 has 1 cross-referenced part number: 1N91 (Philips Ecg Inc Div of North American Philips Corp).

What NSN replaces 5961-00-940-8580?

There are 3 known substitutes for 5961-00-940-8580: 5961-00-284-6016, 5961-00-577-6214, 5961-00-985-1764. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N91?

Key specifications for 1N91: Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY QUALITY CONTROLLED FOR POLARIS; Material: GERMANIUM SEMICONDUCTOR; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Features Provided: HERMETICALLY SEALED CASE. 5 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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