The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-321-1908, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5955-01-321-1908 |
| Primary Part Number | 5542970 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.0025 TO 0.0025 |
| Terminal Diameter | 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Terminal Length | 0.500 INCHES MINIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Body Width | 0.402 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 30.0 MAXIMUM |
| Overall Thickness | 0.183 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, WIRE LEADS |
| Drive Level Rating | 4.0 MILLIWATTS MINIMUM AND 6.0 MILLIWATTS MAXIMUM |
| Center to Center Distance Between Terminals | 0.184 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Load Capacitance in Picofarads | 32.0 NOMINAL |
| Circuit Resonance | ANTIRESONANCE |
| Shunt Capacitance in Picofarads | 7.0 MAXIMUM |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Specified Frequency | 9.9965 MEGAHERTZ |
| Body Thickness | 0.150 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5955-01-321-1908 is a Crystal Unit,quartz, manufactured by Naval Sea Systems Command, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-01-321-1908 has 2 manufacturer part numbers on file: 5542970 (Naval Sea Systems Command), 5542970 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled).
Key specifications for 5542970: Frequency Tolerance for Operating Temp in Percent: -0.0025 TO 0.0025; Terminal Diameter: 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN; Terminal Length: 0.500 INCHES MINIMUM IN; Mode of Oscillation: FUNDAMENTAL. 16 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.
NSN 5955-01-321-1908 has DEMIL Code Q. 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.