Actual size

Crystal unit

Specifications (characteristics)

Item

Symbol

Specifications

Conditions / Remarks

Nominal frequency range

f_nom

32.768 kHz

32 kHz to 100 kHz

Please contact us about available frequencies.

Storage temperature

T_stg

-55

C to +125 C

Storage as single product.

Operating temperature

T_use

-40

C to +85 C

Level of drive

DL

1.0

W Max.

Operating Drive level

0.5

W Max.

Frequency tolerance (standard)

f_tol

Turnover temperature

Ti

+25

C  5 C

Parabolic coefficient

B

-0.04

Load capacitance

CL

7 pF, 9 pF, 12.5 pF

Please specify

Motional resistance (ESR)

R1

65 k

 Max.

65 k

 to 25 k

Motional capacitance

C1

1.9 fF Typ.

2.5 fF to 0.6 fF

Shunt capacitance

C0

0.8 pF Typ.

1.2 pF to 0.5 pF

Frequency aging

f_age

+25

C, First year

External dimensions

(Unit:mm)

.

Footprint (Recommended)

(Unit:mm)

MC-146

MC-156

kHz RANGE CRYSTAL UNIT

LOW PROFILE SMD

Frequency range

:

32.768 kHz (32 kHz to 100 kHz)

External dimension : 7.0 × 1.5 × 1.4 mm ···MC-146

:

7.1 × 3.3 × 1.5 mm ···MC-156

Overtone order

:

Fundamental

Applications

:

Small communications devices

#1

#2

#3

#4

(0.75)

1.6

5.08

7.1 Max.

0.4

(0.75)

MC-156

#1

#2

#4

#3

Internal connection

(TOP VIEW)

6.7

#1

#2

#3

#4

#1

0.4

0.1

0.1

7.0 Max.

#4

#3

#2

0.4

0.2

0.2

0.2

#1

#2

#4

#3

Internal connection

(TOP VIEW)

MC-146

The metal case inside of the molding compound may be exposed on the top or bottom of this product.

This purely cosmetic and does not have any effect on quality, reliability or electrical specs.

Do not connect #2 and #3 to external device.

E A 9 9

E A 9 6

MC-146

MC-156

1.2

5.1

1.2

1.2

3.88

1.2

Product Number (please contact us)

MC-146

: Q1xMC1462xxxx00

MC-156

: Q1xMC1562xxxx00