SMD Quartz Crystal
Series Number Package Description Last Modified
250 ~ 251 HC-49SM SMD Quartz Crystal Sept. 01 2004
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FEATURES
- Cost effective
- Low profile
- Space saving design
- Tape and Reel
- RoHs / Lead Free compliant
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OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
PARAMETERS CONDITIONS. CHARACTERISTICS UNITS
Frequency Range fO 3.000 ~ 85.00 MHz
Frequency Tolerance Ref @ +25°C ±30 std. (±5 ~ ±100 avail.) PPM
Temperature Tolerance TL ±50 std. (See Table 2) PPM
Operating Temperature TOPR -10 ~ +60 std. (See Table 2) °C
Storage Temperature TSTG -55 ~ +125 °C
Shunt Capacitance CO 7.0 max. pF
Load Capacitance CL 20.0 std. (8 ~ 50 and Series avail.) pF
Drive Level DL 0.1 ~ 1.0 mW
Aging (First Year) @ +25°C ±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.
3.000 ~ 3.500 Fundamental 300
3.500 ~ 3.800 Fundamental 150
3.800 ~ 4.100 Fundamental 120
4.100 ~ 5.000 Fundamental 100
5.000 ~ 6.000 Fundamental 80
6.000 ~ 8.000 Fundamental 70
FREQUENCY RANGE (MHz) MODE ohm max.
8.000 ~ 10.000 Fundamental 60
10.000 ~ 12.000 Fundamental 50
12.000 ~ 28.000 Fundamental 40
28.000 ~ 33.500 Fundamental 50
26.000 ~ 40.000 3rd OT 100
40.000 ~ 75.000 3rd OT 80
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TABLE 2 -  FREQUENCY - TEMPERATURE TOLERANCE
Cutting Temperature
Range
Tolerance (PPM)
±5.00 ±10.0 ±15.0 ±20.0 ±30.0 ±50.0
AT 0 ~ +50°C x x x x x x
-10 ~ +60°C - x x x O x
-20 ~ +70°C - - x x x O
-30 ~ +80°C - - - x x x
-40 ~ +85°C - - - - x x
BT Within a range of ±80 ~ ±120 PPM
Note: Consult factory for available frequencies
x available
O recommended
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Dim. L
250 4.2mm
251 3.2mm
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PART NUMBER GUIDE
Series
Number
Frequency Load Capacitance Tolerance @ +25oC Tolerance Over
Temp ( oC )
Operating 
Temp ( oC )
Packaging**
250 - 12.0M - SR - 05 K P - TR
HC-49SM
250: L=4.2
251: L=3.2
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
or Fill in E.G
05 = ±5 PPM
25 = ±25 PPM
Avail. = ±5 ~ ±100
Blank* =  ±50 PPM
G =  ±30 PPM
H= ±20 PPM
K =  ±15 PPM
L =  ±10 PPM
M= ±5 PPM
N= ±100 PPM
P =  0~+50
R =  -10~+60
S =  -20~+70
T = -30~+80
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.:
250 to 251

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