| Item Name | Crystal Unit Quartz |
| Federal Supply Group (FSG) | Electrical and Electronic Equipment Components |
| Federal Supply Class (FSC) | 5955 Oscillators Piezoelectric Crystals |
| National Item Identification Number (NIIN) | 00-678-1958 (006781958) |
| NCB Code | USA (00) |
| Manufacturer | Rockwell Collins Aerospace, Military Specifications |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 290-7542-00 | rockwell collins aerospace | crystal unit quartz | 13499 | RFQ |
| CR18U1944-00KC | military specifications | crystal unit quartz | 81349 | RFQ |
| MILC3098TYPECR18U1944-00KC | military specifications | crystal unit quartz | 81349 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 1.003 INCHES NOMINAL |
| ABJT | TERMINAL LENGTH | 0.238 INCHES NOMINAL |
| ABMK | OVERALL WIDTH | 0.750 INCHES NOMINAL |
| ADAQ | BODY LENGTH | 0.765 INCHES NOMINAL |
| ADUM | OVERALL THICKNESS | 0.345 INCHES NOMINAL |
| AEBT | TERMINAL DIAMETER | 0.050 INCHES NOMINAL |
| AEHC | MODE OF OSCILLATION | FUNDAMENTAL |
| AEHG | SPECIFIED FREQUENCY | 1.944 MEGAHERTZ |
| AEHT | CENTER TO CENTER DISTANCE BETWEEN TERMINALS | 0.486 INCHES NOMINAL |
| AFGA | OPERATING TEMP RANGE | -55.0 TO 90.0 DEG CELSIUS |
| CRFX | FREQUENCY TOLERANCE FOR OPERATING TEMP IN PERCENT | -0.0025 TO 0.0025 |
| STYL | STYLE DESIGNATOR | OVAL BODY,PIN TERMINALS |
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