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.

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