The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-137-7404, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Cts Valpey Corporation. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-137-7404 |
| Primary Part Number | SMB683785 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Cts Valpey Corporation |
| Status | ACTIVE |
| Controlled Reference Temp | 25.0 CELSIUS DEGC |
| Frequency Tolerance for Operating Temp in Percent | -0.0008 TO 0.0008 |
| Terminal Diameter | 0.018 INCHES NOMINAL IN |
| Terminal Length | 1.500 INCHES MINIMUM IN |
| Mode of Oscillation | FIFTH OVERTONE AND THIRD OVERTONE |
| Body Width | 0.394 INCHES MINIMUM AND 0.401 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 40.0 NOMINAL |
| Frequency Stability in Percent | -0.001 TO 0.001 |
| Overall Thickness | 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, PIN TERMINALS |
| Drive Level Rating | 1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM |
| Center to Center Distance Between Terminals | 0.184 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Circuit Resonance | SERIES RESONANCE |
| Shunt Capacitance in Picofarads | 3.5 MINIMUM AND 4.5 MAXIMUM |
| Operating Temp Range | -32.0 TO 75.0 CELSIUS DEGC |
| Material | GLASS COVER HOLDER |
| Specified Frequency | 110.000 MEGAHERTZ |
| Body Thickness | 0.142 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN |
| 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 |
|---|---|
| SMB683785 | Cts Valpey Corporation (USA) |
| Reference | Meaning |
|---|---|
| SMB683785 | 5/9 Secondary reference Trw Electronics and Defense Sector Rf Devices |
| SMB683785 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5955-00-137-7404 is a Crystal Unit,quartz, manufactured by Cts Valpey Corporation, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-137-7404 has 1 manufacturer part number on file: SMB683785 (Cts Valpey Corporation).
Key specifications for SMB683785: Controlled Reference Temp: 25.0 CELSIUS DEGC; Frequency Tolerance for Operating Temp in Percent: -0.0008 TO 0.0008; Terminal Diameter: 0.018 INCHES NOMINAL IN; Terminal Length: 1.500 INCHES MINIMUM IN. 18 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.