Crystals
T26, T38, T48S
Tuning Fork Crystals
RoHS Compliance Optional. Please Call for Availability
T26 photo
T26
T38 photo
T38

T48S

 

  T26, T38, T48S
Nominal Type 32.768 kHz
Frequency Tolerance
±20, ±30, ±50, ±100 ppm
Load Capacitance
12.5 pF (Typical) *
Drive Level
1 µW max.
Series Resistance 40 K-ohms max.
Q-Factor
60 K (Typical)
Turnover Temperature 25°C, ±5°C
Parabolic Curve Constant -0.042 ppm/°C² max.
Shunt Capacitance 1.6 pF (Typical)
Capacitance Ratio (C/C) Refer to chart below
Operating Temperature Range -20 to +70°C or -40 to +85°C
Storage Temperature Range -40 to +85°C
Shock Resistance ±3 ppm max. **
Insulation Resistance 500 M-ohms min./DC 100 V
* Optional load capacitance available - contact factory.
** Natural drop 3 times on hard board from height of 75 cm.

 

T26 / T38 Dimensions
Type A A' E F G H

T26 in.

.079 .083 max. .236 max .197 min .028 ± .008 .011 ± .002
T26 mm  (2.0)  (2.1 max) (6.0 max) (5.0 min) (0.7 ± 0.2) (0.28 ± 0.05)
T38 in. .118 .122 max .323 max .394 ± .039 .043 ± .008 .014 ± .01
T38 mm (3.0) (3.1 max) (8.2 max) (10 ± 1) (1.1 ± 0.2) (0.35 ± 0.07)

T26 and T38 dimensions

 

T48S Dimensions

T48S dimensions

 

Capacitance and Temperature Characteristics
(click on charts for larger image)
Click for larger image Click for larger image Click for larger image

 

This PDF contains a printable A-Size version of the above drawing. Download A-Size PDF T26/T38
A-Size Drawing

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