PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

100021Circuit Card Assembly

Sunhillo Corp · NSN 5998-01-546-9443 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-546-9443 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-546-9443. Primary manufacturer part number: 100021.
Features
  • Circuit Card Assembly — FSC 5998
  • 2 verified cross-references
  • Primary manufacturer: Sunhillo Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-546-9443, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Sunhillo Corp. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5998-01-546-9443
Primary Part Number100021
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerSunhillo Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeC
Verified Substitutes 12
5999-00-626-353802-09-2103 SUCCESSOR
Contact,electrical
Molex, Llc
5905-00-295-3578571-6505-1303192PC34 INTERCHANGEABLE
Resistor,adjustable
Naval Ship Systems Command
4820-00-611-552411-0138 INTERCHANGEABLE
Valve,check
Bacharach, Inc.
5905-00-878-500510002-1 INTERCHANGEABLE
Resistor,fixed,wire Wound
Memcor Inc
1680-00-919-8569 INTERCHANGEABLE
Actuator,aircraft Safety Lap Bel
1560-00-972-531710-002-1 INTERCHANGEABLE
Adapter,battery Drain
Bell Textron Inc
2915-01-121-3941 INTERCHANGEABLE
Valve,fuel
5985-01-277-6080IBS-7012-2 INTERCHANGEABLE
Isolator,radio Frequency Reflect
Anritsu Company
2540-01-342-0699100021PS INTERCHANGEABLE
Support,seat,vehicular
Seats Inc Div Seats Incorporated
5975-01-529-4872100021 INTERCHANGEABLE
Ground Rod Storage Assy
Tim Price Inc. Dba Tim Price Inc
Cross-Reference Index
Part NumberManufacturer
100021 PRIMARY Sunhillo Corp (USA)
255A265-2 Lockheed Martin Services Inc M/s 3067 (USA)
Related Parts
5999-00-626-3538SUCCESSOR
CONTACT,ELECTRICAL
02-09-2103
5905-00-295-3578INTERCHANGEABLE
RESISTOR,ADJUSTABLE
571-6505-1303192PC34
4820-00-611-5524INTERCHANGEABLE
VALVE,CHECK
11-0138
5905-00-878-5005INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
10002-1
1680-00-919-8569INTERCHANGEABLE
ACTUATOR,AIRCRAFT SAFETY LAP BEL
1560-00-972-5317INTERCHANGEABLE
ADAPTER,BATTERY DRAIN
10-002-1
2915-01-121-3941INTERCHANGEABLE
VALVE,FUEL
5985-01-277-6080INTERCHANGEABLE
ISOLATOR,RADIO FREQUENCY REFLECT
IBS-7012-2
2540-01-342-0699INTERCHANGEABLE
SUPPORT,SEAT,VEHICULAR
100021PS
5975-01-529-4872INTERCHANGEABLE
GROUND ROD STORAGE ASSY
100021
5340-01-599-3945INTERCHANGEABLE
MOUNT,RESILIENT,UTILITY
100 021
5995-01-660-3078INTERCHANGEABLE
NRP,CABLE ASSEMBLY
1530010-108

Frequently Asked Questions

What is NSN 5998-01-546-9443?

NSN 5998-01-546-9443 is a Circuit Card Assembly, manufactured by Sunhillo Corp, classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-546-9443?

NSN 5998-01-546-9443 has 2 cross-referenced part numbers: 100021 (Sunhillo Corp), 255A265-2 (Lockheed Martin Services Inc M/s 3067).

What NSN replaces 5998-01-546-9443?

There are 12 known substitutes for 5998-01-546-9443: 5999-00-626-3538, 5905-00-295-3578, 4820-00-611-5524 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 100021?

Key specifications for 100021: End Item Identification: EN ROUTE COMMUNICATIONS GATEWAY (ECG); Part Name Assigned by Controlling Agency: ADAPTER CARD, 8 PORT MODEM SPLITTER, CCA; End Item Identification: EN ROUTE COMMUNICATIONS GATEWAY (ECG); Part Name Assigned by Controlling Agency: ADAPTER CARD, 8 PORT MODEM SPLITTER, CCA. 4 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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