The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-004-2025, is classified within Federal Supply Class 5955 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-004-2025 |
| Primary Part Number | 925128-21 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — No Item Name Available |
| Manufacturer | Raytheon Company Dba Raytheon |
| Status | ACTIVE |
| Frequency Tolerance for Operating Temp in Percent | -0.0015 TO 0.0015 |
| Terminal Length | 0.980 INCHES MINIMUM AND 1.105 INCHES MAXIMUM IN |
| Test Data Document | 81349-MILC3098 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Equivalent Resistance Value in Ohms | 40.0 NOMINAL |
| Center to Center Distance Between Terminals | 0.200 INCHES NOMINAL IN |
| Drive Level Rating | 1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM |
| Style Designator | HAT TYPE, 3 WIRE LEADS |
| Circuit Resonance | SERIES RESONANCE |
| Operating Temp Range | -24.0 TO 54.0 CELSIUS DEGC |
| Terminal Diameter | 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Shunt Capacitance in Picofarads | 3.6 MINIMUM AND 5.4 MAXIMUM |
| Mode of Oscillation | FIFTH OVERTONE |
| Overall Diameter | 0.340 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Specified Frequency | 101.517854 MEGAHERTZ |
| Diameter | 0.310 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5955-00-004-2025 is a Crystal Unit,quartz, manufactured by Raytheon Company Dba Raytheon, classified under FSC 5955 (No Item Name Available). Status: active.
NSN 5955-00-004-2025 has 3 cross-referenced part numbers: K309-21 (Bliley Technologies Inc), 925128-21 (Raytheon Company Dba Raytheon), 99-40-21 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled).
There are 2 known substitutes for 5955-00-004-2025: 5905-00-111-8357, 6220-01-203-8833. Verify interchangeability with system specifications before substitution.
Key specifications for 925128-21: Frequency Tolerance for Operating Temp in Percent: -0.0015 TO 0.0015; Terminal Length: 0.980 INCHES MINIMUM AND 1.105 INCHES MAXIMUM IN; Test Data Document: 81349-MILC3098 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Equivalent Resistance Value in Ohms: 40.0 NOMINAL. 16 total characteristics are documented in the Federal Logistics Information System.