The Oscillator,crystal Controlled, cataloged under National Stock Number 5955-00-034-7123, is classified within Federal Supply Class 5955 (Oscillators and Piezoelectric Crystals) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Electronic Systems. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-034-7123 |
| Primary Part Number | 990C020H01 |
| Item Name | Oscillator,crystal Controlled |
| FSC / FSG | 5955 / 59 — Oscillators and Piezoelectric Crystals |
| Manufacturer | Northrop Grumman Systems Corporation Dba Electronic Systems |
| Status | ACTIVE |
| Circuit Construction Type | SOLID STATE |
| FSC Application Data | TEST SET,ELECTRONIC SYSTEMS,SPECIALLY DESIGNED,ACFT |
| Inclosure Type | HERMETICALLY SEALED |
| Connection Type | POWER RECEPTACLE REAR |
| Basic Shape Style | RECTANGULAR OR SQUARE |
| Distortion Type and Percent | 1.0 FREQUENCY |
| Average Life Measurement | NOT RATED |
| Operating Temp Range | +0.0 TO 55.0 CELSIUS DEGC |
| Installation Design | PANEL |
| External DC Operating Voltage in Volts | 25.0 NOMINAL SINGLE VOLTAGE |
| 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 |
|---|---|
| 990C020H01 PRIMARY | Northrop Grumman Systems Corporation Dba Electronic Systems (USA) |
| L302-1 PRIMARY | Pi Tape Corporation (USA) |
| Reference | Meaning |
|---|---|
| 990C02H01 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Electronic Systems |
NSN 5955-00-034-7123 is a Oscillator,crystal Controlled, manufactured by Northrop Grumman Systems Corporation Dba Electronic Systems, classified under FSC 5955, Oscillators and Piezoelectric Crystals. Status: active.
NSN 5955-00-034-7123 has 2 manufacturer part numbers on file: 990C020H01 (Northrop Grumman Systems Corporation Dba Electronic Systems), L302-1 (Pi Tape Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5810-01-608-1484. Verify interchangeability with system specifications before substitution.
Key specifications for 990C020H01: Circuit Construction Type: SOLID STATE; Overall Height: 3.350 INCHES NOMINAL IN; FSC Application Data: TEST SET,ELECTRONIC SYSTEMS,SPECIALLY DESIGNED,ACFT; Inclosure Type: HERMETICALLY SEALED. 10 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 5955-00-034-7123 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.