The Crystal Unit,quartz, cataloged under National Stock Number 5955-00-051-4756, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-00-051-4756 |
| Primary Part Number | CR61/U20M00000 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Circuit Resonance | SERIES RESONANCE |
| Overall Thickness | 0.183 INCHES MAXIMUM IN |
| Specified Frequency | 20.000 MEGAHERTZ |
| Body Width | 0.402 INCHES MAXIMUM IN |
| Frequency Stability in Percent | -0.0005 TO 0.0005 |
| Shunt Capacitance in Picofarads | 7.0 MAXIMUM |
| Center to Center Distance Between Terminals | 0.184 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Frequency Tolerance for Operating Temp in Percent | -0.002 TO 0.002 |
| Operating Temp Range | +80.0 TO 90.0 CELSIUS DEGC |
| Specification/standard Data | 81349-MIL-C-3098/39 GOVERNMENT SPECIFICATION |
| Drive Level Rating | 0.8 MILLIWATTS MINIMUM AND 1.2 MILLIWATTS MAXIMUM |
| Test Data Document | 81349-MIL-C-3098 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 MAXIMUM |
| Frequency Tolerance at Reference Temp in Percent | -0.008 TO 0.008 |
| Operable Temp Range | -55.0 TO 80.0 CELSIUS DEGC |
| Body Thickness | 0.150 INCHES MAXIMUM IN |
| Style Designator | OVAL BODY, WIRE LEADS |
| Controlled Reference Temp | 85.0 CELSIUS DEGC |
| Terminal Diameter | 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Terminal Length | 0.500 INCHES MINIMUM IN |
| Mode of Oscillation | THIRD OVERTONE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| CR61/U20M00000 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-C-3098/39 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| CR61U | Electronic Research Company (USA) |
| MIL-PRF-3098/39 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5955-00-051-4756 is a Crystal Unit,quartz, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5955 (No Item Name Available). Status: active.
NSN 5955-00-051-4756 has 4 cross-referenced part numbers: CR61/U20M00000 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-3098/39 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), CR61U (Electronic Research Company), MIL-PRF-3098/39 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 5955-00-051-4756: 5955-00-082-3964, 5955-00-226-8419, 5955-00-583-0111 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for CR61/U20M00000: Circuit Resonance: SERIES RESONANCE; Overall Thickness: 0.183 INCHES MAXIMUM IN; Specified Frequency: 20.000 MEGAHERTZ; Body Width: 0.402 INCHES MAXIMUM IN. 23 total characteristics are documented in the Federal Logistics Information System.