PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4N27MCoupler,optoelectronic

Fairchild Semiconductor Corporation · NSN 5980-01-630-6242 · FSC 5980 · Light Emitting Diode
Verified by PartsTable
NSN 5980-01-630-6242 — this item is cataloged by the U.S. Government under National Stock Number 5980-01-630-6242. Primary manufacturer part number: 4N27M.
Features
  • Coupler,optoelectronic — FSC 5980
  • 2 verified cross-references
  • Primary manufacturer: Fairchild Semiconductor Corporation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,optoelectronic, cataloged under National Stock Number 5980-01-630-6242, is classified within Federal Supply Class 5980 (Light Emitting Diode) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Fairchild Semiconductor Corporation. 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
NSN5980-01-630-6242
Primary Part Number4N27M
Item NameCoupler,optoelectronic
FSC / FSG5980 / 59 — Light Emitting Diode
ManufacturerFairchild Semiconductor Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5980-01-023-1623 INTERCHANGEABLE
Coupler,optoelectronic
5980-01-267-48534N27 INTERCHANGEABLE
Coupler,optoelectronic
Texas Instruments Incorporated
Cross-Reference Index
Part NumberManufacturer
4N27 Fairchild Semiconductor Corporation (USA)
4N27M PRIMARY Fairchild Semiconductor Corporation (USA)
Related Parts
5980-01-023-1623INTERCHANGEABLE
COUPLER,OPTOELECTRONIC
5980-01-267-4853INTERCHANGEABLE
COUPLER,OPTOELECTRONIC
4N27

Frequently Asked Questions

What is NSN 5980-01-630-6242?

NSN 5980-01-630-6242 is a Coupler,optoelectronic, manufactured by Fairchild Semiconductor Corporation, classified under FSC 5980 (Light Emitting Diode). Status: active.

What are the part numbers for NSN 5980-01-630-6242?

NSN 5980-01-630-6242 has 2 cross-referenced part numbers: 4N27 (Fairchild Semiconductor Corporation), 4N27M (Fairchild Semiconductor Corporation).

What NSN replaces 5980-01-630-6242?

There are 2 known substitutes for 5980-01-630-6242: 5980-01-023-1623, 5980-01-267-4853. Verify interchangeability with system specifications before substitution.

What are the specifications of 4N27M?

Key specifications for 4N27M: Overall Width: 6.10 MILLIMETERS MINIMUM AND 6.60 MILLIMETERS MAXIMUM MM; Part Name Assigned by Controlling Agency: GENERAL PURPOSE 6-PIN PHOTOTRANSISTOR OPTO COUPLER; Overall Height: 3.28 MILLIMETERS MINIMUM AND 3.53 MILLIMETERS MAXIMUM MM; Overall Length: 8.13 MILLIMETERS MINIMUM AND 8.89 MILLIMETERS MAXIMUM MM. 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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