The Semiconductor Device Set, cataloged under National Stock Number 5961-01-112-0056, is classified within Federal Supply Class 5961 (Semiconductor Devices and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bae Systems Australia Limited Div Bae Systems Australia Limited. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-112-0056 |
| Primary Part Number | BB121A |
| Item Name | Semiconductor Device Set |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Bae Systems Australia Limited Div Bae Systems Australia Limited |
| Status | ACTIVE |
| Component Function Relationship | MATCHED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BB121A | Bae Systems Australia Limited Div Bae Systems Australia Limited (AUS) |
| 4-28610P | Bastogi Sistemi Spa (ITA) |
| 4-28610P | Leonardo S.p.a. Security & Information System Division (ITA) |
| Reference | Meaning |
|---|---|
| BB121A | 3/9 Design control — primary reference Itt Semiconductors a Division of International Telephone and Telegraph Corp |
NSN 5961-01-112-0056 is a Semiconductor Device Set, manufactured by Bae Systems Australia Limited Div Bae Systems Australia Limited, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-112-0056 has 3 manufacturer part numbers on file: BB121A (Bae Systems Australia Limited Div Bae Systems Australia Limited), 4-28610P (Bastogi Sistemi Spa), 4-28610P (Leonardo S.p.a. Security & Information System Division).
Key specifications for BB121A: Component Function Relationship: MATCHED; Special Features: TWO VARIABLE CAPACITANCE TUNING DIODE COMPONENTS; ITT SEMICONDUCTORS CONTROLLING AGENCY; COMPONENT PART NO. BB121A. 1 specification is 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.
NSN 5961-01-112-0056 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.