The Circuit Card Assembly, cataloged under National Stock Number 5998-01-535-8880, is classified within Federal Supply Class 5998 (Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Microsemi Frequency and Time Corp. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5998-01-535-8880 |
| Primary Part Number | BC635PCI-U |
| Item Name | Circuit Card Assembly |
| FSC / FSG | 5998 / 59 — Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware |
| Manufacturer | Microsemi Frequency and Time Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | CT |
| Weight | 1.5000 lbs |
| Cube | 0.0724 cu ft |
| Part Number | Manufacturer |
|---|---|
| BC635PCI-U PRIMARY | Microsemi Frequency and Time Corp (USA) |
| Reference | Meaning |
|---|---|
| BC635PCU-U | C/1 Advisory reference — outside the item-of-supply concept Microsemi Frequency and Time Corp |
NSN 5998-01-535-8880 is a Circuit Card Assembly, manufactured by Microsemi Frequency and Time Corp, classified under FSC 5998, Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware. Status: active.
NSN 5998-01-535-8880 has 1 manufacturer part number on file: BC635PCI-U (Microsemi Frequency and Time Corp).
2 possible matches (shared part number, not a government interchangeability claim): 5998-01-552-8594, 5998-01-571-3897. Verify interchangeability with system specifications before substitution.
Key specifications for BC635PCI-U: Part Name Assigned by Controlling Agency: CCA, TIME CARD; End Item Identification: ASOS CONTROLLER EQUIPMENT-INFORMATION DISPLAY SYSTEM (ACE IDS). 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.