Type

STF15

STF26

STF38

Freq. range

30 ~ 200KHz

30 ~ 200KHz

32.768KHz

Frequency tolerance （at 25°C）

-/+20ppm

Operating temperature

-20 ~ +85°C

Equivalent series resistance

See table No.1

Temperature characteristics
-Turnover temperature
-Parabolic curvature constant

25°C-+5°C
-0.045x10 -6 /°C 2 Max.

Drive level

1.0uW Max.

Shunt capacitance

5.0pF Max.

2.0pF Max.

2.0pF Max.

Load capacitance

12.5pF (standard)

Aging

-/+5ppm/year

Type

Frequency

ESR

STF38

32.768KHz

35K ohms Max.

STF26

32.768KHz

50K ohms Max.

STF15

32.768KHz

60K ohms Max.

Type

A

B

C

D

E

STF38

8.2

3.1

0.8

10

0.35

STF26

6.2

2.1

0.7

7.5

0.25

STF15

5

1.4

0.45

5

0.22