PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4120ACircuit Card Assembly

Ribbon Communications Federal Inc. · NSN 5998-01-506-8732 · FSC 5998 · Circuit Card Assembly
Verified by PartsTable
NSN 5998-01-506-8732 — this item is cataloged by the U.S. Government under National Stock Number 5998-01-506-8732. Primary manufacturer part number: 4120A.
Features
  • Circuit Card Assembly — FSC 5998
  • 2 verified cross-references
  • Primary manufacturer: Ribbon Communications Federal Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circuit Card Assembly, cataloged under National Stock Number 5998-01-506-8732, is classified within Federal Supply Class 5998 (Circuit Card Assembly) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Ribbon Communications Federal Inc.. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5998-01-506-8732
Primary Part Number4120A
Item NameCircuit Card Assembly
FSC / FSG5998 / 59 — Circuit Card Assembly
ManufacturerRibbon Communications Federal Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality Code2
Unit of IssueEA
SMR CodeCD
Weight2.0000 lbs
Cube0.0029 cu ft
Verified Substitutes 5
6625-00-081-44574120B SUCCESSOR
Generator,pulse
Servo Corporation of America
4320-00-060-6828J35951-175 INTERCHANGEABLE
Pump,hydraulic Ram,hand Driven
Bosch Automotive Service Solutions Inc.
5342-00-545-5789200041900 INTERCHANGEABLE
Mount,resilient,weapon System
Cardwell Condenser Corp Lapointe-Admiral Div
6645-01-396-18724120A INTERCHANGEABLE
Clock,barrel Assemb
Wakmann Watch Company Inc
6030-01-527-44494120A INTERCHANGEABLE
Receiver,light Signal
Ortel Corporation Div Ortel Division
Cross-Reference Index
Part NumberManufacturer
99002A8007-25 Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service (USA)
4120A PRIMARY Ribbon Communications Federal Inc. (USA)
Related Parts
6625-00-081-4457SUCCESSOR
GENERATOR,PULSE
4120B
4320-00-060-6828INTERCHANGEABLE
PUMP,HYDRAULIC RAM,HAND DRIVEN
J35951-175
5342-00-545-5789INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
200041900
6645-01-396-1872INTERCHANGEABLE
CLOCK,BARREL ASSEMB
4120A
6030-01-527-4449INTERCHANGEABLE
RECEIVER,LIGHT SIGNAL
4120A

Frequently Asked Questions

What is NSN 5998-01-506-8732?

NSN 5998-01-506-8732 is a Circuit Card Assembly, manufactured by Ribbon Communications Federal Inc., classified under FSC 5998 (Circuit Card Assembly). Status: active.

What are the part numbers for NSN 5998-01-506-8732?

NSN 5998-01-506-8732 has 2 cross-referenced part numbers: 99002A8007-25 (Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service), 4120A (Ribbon Communications Federal Inc.).

What NSN replaces 5998-01-506-8732?

There are 5 known substitutes for 5998-01-506-8732: 6625-00-081-4457, 4320-00-060-6828, 5342-00-545-5789 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4120A?

Key specifications for 4120A: Part Name Assigned by Controlling Agency: LDCELP-24 VOICE COMPRESSION SERVER MODULE; End Item Identification: 5895-01-467-7213 DIGITAL TECHNICAL CONTROL; Part Name Assigned by Controlling Agency: LDCELP-24 VOICE COMPRESSION SERVER MODULE; End Item Identification: 5895-01-467-7213 DIGITAL TECHNICAL CONTROL. 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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