The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-978-0445, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bliley Technologies Inc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-978-0445 |
| Primary Part Number | BG61AH5 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Bliley Technologies Inc |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.0001 TO 0.0001 |
| Terminal Length | 1.500 INCHES NOMINAL IN |
| Mode of Oscillation | FIFTH OVERTONE |
| Equivalent Resistance Value in Ohms | 140.0 MAXIMUM |
| Style Designator | TUBE TYPE, 4 WIRE LEADS |
| Diameter | 0.790 INCHES NOMINAL IN |
| Drive Level Rating | 70.0 MICROAMPERES NOMINAL |
| Circuit Resonance | SERIES RESONANCE |
| Operating Temp Range | +45.0 TO 90.0 CELSIUS DEGC |
| Material | GLASS COVER HOLDER |
| Specified Frequency | 5.000 MEGAHERTZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BG61AH5 PRIMARY | Bliley Technologies Inc (USA) |
NSN 5955-00-978-0445 is a Crystal Unit,quartz, manufactured by Bliley Technologies Inc, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-978-0445 has 1 manufacturer part number on file: BG61AH5 (Bliley Technologies Inc).
Key specifications for BG61AH5: Frequency Tolerance for Operating Temp in Percent: -0.0001 TO 0.0001; Terminal Length: 1.500 INCHES NOMINAL IN; Mode of Oscillation: FIFTH OVERTONE; Equivalent Resistance Value in Ohms: 140.0 MAXIMUM. 11 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.