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- Crystals
Crystals
Apart from our finished quartz frequency control products, we manufacture a wide range of crystals of various designs for frequencies ranging from 4 kHz to 200 MHz. For these crystals we employ quartz elements manufactured along the most commonly used cuts. Morion, Inc. offers the crystals in standard HC-52, HC-49 and HC-33 packages.
Please refer to the following table:
| Crystal type | Package type | Frequency range (overtone) | Frequency tolerance, x10-6 | Motional resistance, Ohm |
| QR-MV-379 | НС-49 | 420....550 kHz (1) | ±30 | < 3000 |
| QR-MV-379 |
НС-49, HC49-SMD
|
4000... 45000 kHz (1) 20 ...90 MHz (3) 60 ...200 MHz (5)
|
±3...±30
|
20...100
|
|
НС-52, HC52-SMD
|
5000 ...45000 kHz (1) 20...140 MHz (3) 60 ...200 MHz (5)
|
±3...±30
|
30...150
|
|
| НС-33 | 750...8000 kHz (1) | ±10...±20 | 30...600 | |
| 1000...8000 kHz (1) | ||||
| QR-MV-432 | НС-49/S | 10000...25000 kHz (1) | ±15...±50 | < 25 |
For frequency tolerance specification please refer the following table:
| Frequency accuracy, x10-6 | ±0,5 | ±1 | ±3 | ±5 | ±10 | ±15 | ±20 | ±30 | ±50 | ±75 | ±100 |
| Designation | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
For frequency stability versus operating temperature changes specification please refer the following table:
| Temperature range,°С | Frequency stability, x10-6 | ||||||||||||
| ±1.5 | ±2 | ±3 | ±5 | ±7.5 | ±10 | ±15 | ±20 | ±25 | ±30 | ±40 | ±50 | ||
| G | H | I | K | L | M | N | P | R | S | T | U | ||
| A | -10... 60 | NA | NA | A | A | A | A | A | A | A | A | A | A |
| B | -30... 60 | NA | NA | NA | NA | C | A | A | A | A | A | A | A |
| C | -40... 70 | NA | NA | NA | NA | NA | C | A | A | A | A | A | A |
| D | -60... 85 | NA | NA | NA | NA | NA | NA | NA | A | A | A | A | A |
| E | 75... 85 | A | A | A | A | A | A | A | A | A | A | A | A |
| F | 65... 75 | A | A | A | A | A | A | A | A | A | A | A | A |
| G | 55... 65 | A | A | A | A | A | A | A | A | A | A | A | A |
A - available, NA - not available, C - consult factory.
Ordering guide: QR-MV-379-HC-49-SMD-5AI-38.4625M, where:
• QR-MV-379: crystal type;
• HC-49-SMD: package type (HC-49, HC-49-SMD, HC-52, HC-52-SMD, HC-49/S, HC-33);
• 5: designation of frequency tolerance;
• A: designation of temperature range;
• I: designation of frequency stability vs. temperature range;
• 38.4625M: designation of output frequency.