The Crystal Unit,quartz, cataloged under National Stock Number 5955-01-198-2501, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5955-01-198-2501 |
| Primary Part Number | 972389-1 |
| Item Name | Crystal Unit,quartz |
| FSC / FSG | 5955 / 59 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Body Thickness | 0.136 INCHES MAXIMUM IN |
| Circuit Resonance | SERIES RESONANCE |
| Overall Thickness | 0.186 INCHES MAXIMUM IN |
| Equivalent Resistance Value in Ohms | 125.0 MAXIMUM |
| Center to Center Distance Between Terminals | 0.187 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Drive Level Rating | 50.0 MILLIWATTS NOMINAL |
| Frequency Tolerance for Operating Temp in Percent | -0.002 TO 0.002 |
| Style Designator | OVAL BODY, WIRE LEADS |
| Terminal Diameter | 0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Operating Temp Range | -40.0 TO 125.0 CELSIUS DEGC |
| Terminal Length | 1.500 INCHES MINIMUM IN |
| Body Width | 0.391 INCHES MAXIMUM IN |
| Mode of Oscillation | FUNDAMENTAL |
| Specified Frequency | 4.000 MEGAHERTZ |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C19452-4 | Cts Reeves Frequency Products (USA) |
| 972389-0004 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 56-3-4 | Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled (USA) |
| 972389-1 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
NSN 5955-01-198-2501 is a Crystal Unit,quartz, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5955 (No Item Name Available). Status: active.
NSN 5955-01-198-2501 has 4 cross-referenced part numbers: C19452-4 (Cts Reeves Frequency Products), 972389-0004 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 56-3-4 (Microsemi Corp. - High Performance Timing Dba Vectron International- Cancelled), 972389-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
There are 11 known substitutes for 5955-01-198-2501: 5930-00-077-0279, 1650-00-102-4370, 5950-00-158-9076 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 972389-1: Body Thickness: 0.136 INCHES MAXIMUM IN; Overall Length: 0.530 INCHES MAXIMUM IN; Circuit Resonance: SERIES RESONANCE; Overall Thickness: 0.186 INCHES MAXIMUM IN. 16 total characteristics are documented in the Federal Logistics Information System.