SMD Quartz Crystal
Series Number Package Description Last Modified
252 ~ 255 HC-49SM 4 Pad SMD Quartz Crystal Jan. 01 2002
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FEATURES
- Cost effective
- Low profile
- Space saving design
- Tape and Reel
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OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
PARAMETERS CONDITIONS. CHARACTERISTICS UNITS
Frequency Range fO 3.579545 ~ 70.00 MHz
Frequency Tolerance Ref @ +25ºC ±30 (Std.) / ±15 , ±50 (Option) PPM
Temperature Tolerance TL ±50 (Std.) / ±30 , ±100 (Option) PPM
Operating Temperature TOPR -20 ~ +70 (Std.) / -40 ~+85 (Option) ºC
Storage Temperature TSTG -40 ~ +85 ºC
Shunt Capacitance CO 7.0 max. pF
Load Capacitance CL 18.0 (Std.) / 10 ~ 50 and Series (Option) pF
Drive Level DL 1.0 max. mW
Aging (First Year) @ +25ºC ±5.0 PPM/Y
Insulation Resistance IR 500 (DC100 ±10V) min. Mohm
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TABLE 1 - OPERATION MODE AND MOTIONAL RESISTANCE (RS)
FREQUENCY RANGE (MHz) MODE ohm max.
3.579545 ~ 4.999 Fundamental/AT 200
5.0 ~ 5.999 Fundamental/AT 150
6.0 ~ 7.999 Fundamental/AT 120
8.0 ~ 8.999 Fundamental/AT 90
9.0 ~ 9.999 Fundamental/AT 80
10.0 ~ 14.999 Fundamental/AT 70
FREQUENCY RANGE (MHz) MODE ohm max.
15.0 ~ 15.999 Fundamental/AT 60
16.0 ~ 23.999 Fundamental/AT 50
24.0 ~ 30.999 Fundamental/AT 40
24.0 ~ 40.32 Fundamental/BT 40
24.576 ~ 29.999 3rd OT/AT 150
30.0 ~ 70.0 3rd OT/AT 100
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Series Layout Dim. L
252 Fig. A 4.0mm
253 Fig. B
254 Fig. A 5.0mm
255 Fig. B
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PART NUMBER GUIDE
Series
Number		 Frequency Load Capacitance Tolerance @ +25oC Tolerance Over
Temp ( oC )		 Operating 
Temp ( oC )		 Packaging**
252 - 12.0M - 18 - 50 N W - TR
HC-49SM
252:L=4.0 (A)
253:L=4.0 (B)
254:L=5.0 (A)
255:L=5.0 (B)
See table below for standard freq. and enter here e.g. 2.048M for 2.048 MHz OR enter any desire frequency. Enter desired capacitance here. See table below for standard load capacitance e.g. -20 for 20pF or Enter SR for Series.
Blank * = ±30 PPM
15 = ±15 PPM
50 = ±50 PPM
Blank* =  ±50 PPM
G =  ±30 PPM
N= ±100 PPM
S =  -20~+70
W = -40~+85
Blank* = Bulk
TR = Tape/Reel
NOTE: Deviations on all parameters available.  Please consult Oscilent for details.
DEFINITIONS: Click on the characteristic names above for definitions of that particular characteristic.
*STANDARDS: "Blank" part number selections indicate standard variables for that particular characteristic.
**PACKAGING: Click on the packaging name above for tape/reel specifications
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STANDARD FREQUENCIES / LOAD CAPACITANCE - FOR GUIDE ONLY/ OTHER FREQ./LOADS AVAILABLE
FREQUENCY
(MHz)		 LOAD (pF)
Series 12 13 16 17 18 20 30
3.579545 Std. - - - Std. - - -
3.6864 Std. - - - - - Std. -
4.000 Std. - - - - - Std. -
4.032 Std. - - - - - Std. -
4.096 - - - - - - Std. -
4.194304 - Std. - Std. - - - -
4.433618 - - - - - - Std. -
4.9152 Std. - - - - - Std. -
5.000 Std. - - - - - Std. -
5.0688 Std. - - - - - Std. -
5.185 Std. - - - - - - Std.
5.9904 Std. - - - - - Std. -
6.000 Std. - - - - - - Std.
6.144 - - - - - - - Std.
6.5536 Std. - - - - - - -
7.3728 Std. - - - - - Std. -
8.000 Std. - - - - Std. - Std.
9.216 Std. - - - - - Std. -
9.8304 Std. - - - - - Std. -
10.000 Std. - - - - Std. - -
11.000 Std. - - - - - - -
11.0592 Std. - - - - - Std. Std.
12.000 Std. - - - - - Std. Std.
12.000393 - - - - - Std. - -
12.288 Std. - - - - - Std. -
14.31818 Std. - - - - Std. Std. -
14.7456 Std. - - - - - Std. -
15.000 Std. - - - - - - -
16.000 Std. - - - - - Std. -
16.000312 - - - - - Std. - -
16.257 Std. - - - - - Std. -
16.9344 - - - - - - Std. -
18.000 Std. - - - - - Std. -
18.432 Std. - - - - Std. Std. -
19.6608 Std. - - - - - Std. -
20.000 Std. - - Std. - Std. Std. -
22.1184 Std. - - - - - - -
24.000(F) Std. - - Std. - Std. Std. -
24.00014 (F) - - - - - Std. - -
40.00 (OT) - - - - - Std. - -
40.32 (OT) - - - - - - Std. -
FREQUENCY
(MHz)		 Series 12 13 16 17 18 20 32
LOAD (pF)
F = Fundamental | OT = 3RD Overtone
NOTE: Other frequencies and load capacitance available.  Please consult Oscilent for part numbers.
Series No.:
252 to 255

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