crystal unit specifications...zhejiang a-crystal electronic technology co., ltd....

ZHEJIANG A-CRYSTAL ELECTRONIC TECHNOLOGY CO., LTD.

Tel:0086-576-88671858 88671856 Fax: 0086-576-88671857 Http: www.acrystals.com E-mail: [email protected] [email protected]

ZHEJIANG A-CRYSTAL

ELECTRONIC TECHNOLOGY CO., LTD.

Issue August 12, 2019

Rev. 1.0

Page 9

CRYSTAL UNIT SPECIFICATIONS

Customer

Customer P/N

Product CRYSTAL RESONATORS

Spec. HC-49SMD/SERIES

A-Crystal P/N AH2

Drawn Checked Approved

http://www.acrystals.com/

mailto:[email protected]



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4~ ∞

HC-49SMD

3.00~100.00

+-5 ~ +-30

-20~70

SEE PAGE

+-30

100





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2. DIMENSIONS & MARKING

2.1: DIMENSIONS

2.2 MARKING

Frequency Range Mode of Vibration ESR（Ω） Max

3.000MHz≦F0＜4.000MHz Fund <120

4.000MHz≦F0＜6.000MHz Fund <80

6.000MHz≦F0＜8.000MHz Fund <50

8.000MHz≦F0＜16.000MHz Fund <40

16.00MHz≦F0＜48.000MHz Fund <30

24.000MHz≦F0＜40.000MHz 3rd OT <100

40.000MHz≦F0＜80.000MHz 3rd OT <50

50.000MHz≦F0≦100.000MHz

5th OT <100

Frequency

Model H: (mm) Max

HC-49SMD 4.2 HC-49SMD2 3.0





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2.4 Reflow solder

Profiles Feature High-Pb Assembly

Average Ramp-up Rate (Ts max to Tp) 3℃/second max.

Preheat

■ Temperature Min (Ts min)

■ Temperature Max (Ts max)

■ Time (ts min to ts max)

140℃

180℃

70~100 seconds

Time maintained above

■ Temperature (TL) ■ Time (tL)

240℃

20~50 seconds

Peak/Classification Temperature (Tp) 250℃

Time within 5℃ of actual Peak

Temperature (tp)

7~8 seconds

Ramp-down rate 6℃/second max.

Time 25℃ to Peak Temperature 6 minutes max.





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2.5 PACKING METHOD

W E F T P PO

HC-49SMD 24.00±0.30 1.75±0.20 11.5±0.10 0.40±0.05 12.00±0.10 4.00±0.10

HC-49SMD2

P2 DO D1 AO KO BO

HC-49SMD 2.00±0.10 φ1.55±0.20 φ2.2±0.20 5.00±0.10 4.25±0.20 15.0±0.20

HC-49SMD2 3.25±0.20

A B C D N W1 T

φ330±0.20 2.50±0.50 φ13.5±0.50 φ20.2±1.00 φ99.0±1.00 24.0.+1.00 2.3 ±0.50





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2.6 PACKAGING METHOD

2.6.1 TAPE & REEL AS SHOWN IN ABOVE DIMENSION,

2.6.2 INSERT 1,000 PCS OF TAPE & REEL COVERED WITH SHOCK ABSORBANT PAD

INTO THE INNER BOX(INNER BOX SHOULD HAVE DESCRIPTION OF THE PART

CONTAINED) AS SHOWN IN PICTURE1.

INNER-BOX CAN ACCOMODATE UPTO 1,000PCS.[PICTURE2](34*34*3.5)

2.6.3 INSERT SHOCK-ABSORBANT PAD ON ALL SIDES(INCLUDING TOP), AND THEN

INSERT UPTO 10 INNER BOXES INTO THE OUTER BOX. [PICTURE3](43.5*34.5*35.5)

2.6.4 ON THE INNER-BOX COVER, LABEL CONTENTS OF THE BOX(FREQUENCY, LOAD

CAPACITANCE, AND QUANTITY).

2.6.5 TO PREVENT INNER-BOX COVER OPENING DUE TO SHOCK, FASTEN THE COVER

WITH A CLEAR TAPE AS SHOWN IN PICTURE4.





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crystal unit specifications...zhejiang a-crystal electronic technology co., ltd....

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