1.2 x 1.0 x 0.5mm Tuning Fork

– 2 pad

K121

DATASHEET

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Title / Description: K121 STANDARD SPECIFICATIONS

Drawing Number: K121-DOC-1

Size: A

Part Number:

Cage: 61429

Draftsperson: BEC

Approved: MAJ

Revision Date: 06/03/2020

STANDARD SPECIFICATIONS

PARAMETERS

Frequency

32.768 kHz

Frequency Tolerance @ 25ºC

±20 PPM

Frequency Stability

(Temperature Coefficient)

-0.04

Temperature Range

Turnover

Operating

Storage

Storage

)

+20ºC ~ +30ºC

-40ºC ~ +85ºC

-55ºC ~ +125ºC

9

0 kΩ

(See options on page 2)

500MΩ Min

Drive Level

1.0µW

0.1µW Typ

Aging per year @ 25°C (first year)

±3 PPM

Maximum Soldering Temp / Time

260ºC / 10 Seconds

Moisture Sensitivity Level (MSL)

1

Termination Finish

Au over Ni

Seal Method

Seam

Lead (Pb) Free

Yes

RoHS/Reach Compliant

Yes

Page 1 of 3

Note: Dimensional drawing is for reference to critical specifications defined by

size measurements. Certain non-critical visual attributes, such as side castellations, etc.

may vary.

-450

-400

-350

-300

-250

-200

-150

-100

-50

0

PPM

°C

Parabolic Coefficient