PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

226R-4-5A1Relay,solid State

Sigma Instruments Inc · NSN 5945-01-101-4001 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-101-4001 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-101-4001. Primary manufacturer part number: 226R-4-5A1.
Features
  • Relay,solid State — FSC 5945
  • 4 verified cross-references
  • Primary manufacturer: Sigma Instruments Inc
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,solid State, cataloged under National Stock Number 5945-01-101-4001, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Sigma Instruments Inc. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-01-101-4001
Primary Part Number226R-4-5A1
Item NameRelay,solid State
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerSigma Instruments Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5345-00-800-8547FLXFX3002 INTERCHANGEABLE
Cleaner,contact
Martindale Electric Company, the
1680-00-832-975211-98484-02 INTERCHANGEABLE
Clutch Assembly Win
Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company
5310-01-008-6432854-0007 INTERCHANGEABLE
Washer
Cummins Power Generation Inc.
4320-01-093-0654 INTERCHANGEABLE
Deflector,dirt and Liquid
5330-01-120-6860 INTERCHANGEABLE
Gasket
5365-01-296-9820NAS43DD3-64N INTERCHANGEABLE
Spacer,sleeve
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5930-01-392-45778547 INTERCHANGEABLE
Switch,pressure
Hydra-Electric Company Dba Hydra-Electric Co
8030-01-518-55407000028370 INTERCHANGEABLE
Caulking Compound
3m Company
5995-01-527-6011902-8547 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
Cross-Reference Index
Part NumberManufacturer
226R-4-5A1 Sigma Instruments Inc (USA)
8547 Zebra Technologies Corporation (USA)
226R-7-5A1 Sigma Instruments Inc (USA)
226RE-7-5A1 Sigma Instruments Inc (USA)
Related Parts
5345-00-800-8547INTERCHANGEABLE
CLEANER,CONTACT
FLXFX3002
1680-00-832-9752INTERCHANGEABLE
CLUTCH ASSEMBLY WIN
11-98484-02
5310-01-008-6432INTERCHANGEABLE
WASHER
854-0007
4320-01-093-0654INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
5330-01-120-6860INTERCHANGEABLE
GASKET
5365-01-296-9820INTERCHANGEABLE
SPACER,SLEEVE
NAS43DD3-64N
5930-01-392-4577INTERCHANGEABLE
SWITCH,PRESSURE
8547
8030-01-518-5540INTERCHANGEABLE
CAULKING COMPOUND
7000028370
5995-01-527-6011INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
902-8547

Frequently Asked Questions

What is NSN 5945-01-101-4001?

NSN 5945-01-101-4001 is a Relay,solid State, manufactured by Sigma Instruments Inc, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-01-101-4001?

NSN 5945-01-101-4001 has 4 cross-referenced part numbers: 226R-4-5A1 (Sigma Instruments Inc), 8547 (Zebra Technologies Corporation), 226R-7-5A1 (Sigma Instruments Inc), 226RE-7-5A1 (Sigma Instruments Inc).

What NSN replaces 5945-01-101-4001?

There are 9 known substitutes for 5945-01-101-4001: 5345-00-800-8547, 1680-00-832-9752, 5310-01-008-6432 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 226R-4-5A1?

Key specifications for 226R-4-5A1: Special Features: INPUT CONTROL,PICK-UP MUST TURN-ON AT 0.8 VOLTS MAX WITH RESPECT TO GROUND,MAX SINK CURRENT 15 MA; OUTPUT,LINE VOLTAGE 90 TO 280 VAC,LOAD 1.5 AMP MAX,ISOLATION INPUT TO OUTPUT 2500 VAC; OPERATING TEMPERATURE RANGE MINUS 25 DEG C TO PLUS 65 DEG C; 1.400 IN. LG; 0.800 IN. W; 0.695 IN. H; TWO MTG SLOTS SPACED 1.190 IN. C TO C VAC. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-01-101-4001 still in active supply?

NSN 5945-01-101-4001 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.
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