Crystals in HC-52/U and UM-1 cases

Features
Cases HC-52 and UM-1 series are highly reliable,
hermetic sealing by resistance-weld sealing
Crystals can be supplied in slim cases, see table dimensions at bottom of page.

Assembly, taping
Cases HC-52 and UM-1 series are through hole types, but can by shaped for SMD. Crystals in SMD modification can by deliver in tapes wound on reels, suitable for automatic assembly.

Typical specifications

Type	HC-52/U, UM-1
Overtone	1.	3.	5.	7.	9.
Frequency range	3.5-45MHz	16-120MHz	60-190MHz	90-190MHz	120-190MHz
Freq. adjustment tolerance at 25 °C	±5, ±7, ±10, ±15, ±20, ±50 x 10-6
Frequency stability	see table 1
Equivalent series resistance	see table 2
Aging	±1, ±2, ±3 ppm/year
Storage temperature range	-40 ... +90 °C
Load capacitance	series resonance, CL= 5 ... 50 pF
Drive level	10 - 1000 µW

Differences from standard values and other parameters can be consulted.


Frequency stability in temperature ranges (table 1)

Temperature range [°C]

Frequency stability [ppm]

± 2

± 3

± 4

± 5

± 7

± 10

± 15

± 20

± 25

± 30

± 40

± 50

+15 ... +35

+10 ... +40

+5 ... +45

0 ... +50

-5 ... +55

-10 ... +60

-15 ... +65

-20 ... +70

-25 ... +75

-30 ... +80

-40 ... +90

-55 ... +105

Equivalent series resistance (ESR_max) (table 2)
for first overtone

Overtone	Frequency [MHz]
	3.5		4		5		7		10		15		20		45
1.		300 Ω		200 Ω		100 Ω		80 Ω		50 Ω		40 Ω		30 Ω

for higher overtones

Overtone	Frequency [MHz]
	16		25		50		60		90		120		190
3.		130 Ω		80 Ω		40 Ω
5.								60 Ω
7.										120 Ω
9.												200 Ω