Quartz Crystals
Series Number Package Description Last Modified
141 ~ 142 HC-49U / HC-49T Weld Type Quartz April. 17 2008
Quartz Crystal FEATURES
- Industry Standard Package
- Wide Frequency range
- Tight Tolerances
- Excellent reliability/Aging
- "AT" cut crystals
- Cost effective
- RoHs / Lead Free compliant
HC49U Crystal
OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
PARAMETERS CONDITIONS CHARACTERISTICS UNITS
Frequency Range fO 1.800 ~ 100.00 MHz
Frequency Tolerance Ref @ +25°C ±30 std. (±5 ~ ±100 avail.) PPM
Temperature Tolerance TL ±50 std. (See Table 2) PPM
Operating Temperature TOPR -20 ~ +70 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 0.05 ~ 1.0 mW
Aging (First Year) @ +25°C ±5.0 max. PPM/Y
Insulation Resistance IR 500 (DC100 ±10V) min. Mohm
TABLE 1 - MODE OF OSCILLATION AND EQUIVALENT SERIES RESISTANCE
FREQUENCY RANGE (MHz) MODE HC-49T (ohm max.) HC-49U (ohm max.)
1.800 ~ 2.000 Fundamental - 600
2.000~ 2.400 Fundamental - 450
2.400 ~ 3.000 Fundamental - 350
3.000 ~ 3.500 Fundamental - 150
3.500 ~ 4.000 Fundamental 150 90
4.000 ~ 7.000 Fundamental 90 70
7.000 ~ 10.000 Fundamental 50 50
10.000 ~ 15.000 Fundamental 45 35
15.000 ~ 20.000 Fundamental 25 25
20.000 ~ 25.000 Fund. / 3rd OT 25 / 60 25 / 50
25.000 ~ 30.000 Fund. / 3rd OT 25 / 40 25 / 40
30.000 ~ 75.000 3rd Overtone 40 40
75.000 ~ 100.000 3rd / 5th Overtone - / 60 - / 60
27.000 ~ 35.000 BT Fund. 40 40
TABLE 2 -  FREQUENCY - TEMPERATURE TOLERANCE
Cutting Temperature
Range
Tolerance (PPM)
±5.00 ±10.0 ±15.0 ±20.0 ±30.0 ±50.0
AT 0 ~ +50oC x x x x x x
-10 ~ +60oC - x x x x x
-20 ~ +70oC - - x x O x
-30 ~ +80oC - - - x x O
-40 ~ +85oC - - - - - x
BT Within a range of ±80 ~ ±120 PPM
x available
O recommended
Dim. L
HC-49U
(141 Series)
13.2mm
HC-49T
(142 Series)
11.2mm
PART NUMBER GUIDE
Series
Number
Frequency Load Capacitance Tolerance @ +25C Tolerance Over
Temp ( oC )
Operating 
Temp ( oC )
Value Added
141 - 12.0M -20 - 05 K S - VS
141 = HC-49U
142 = HC-49T
See table below for standard freq. and enter here e.g. 2.048M = 2.048 MHz OR enter any desire frequency. Enter desired capacitance here. See table below for standard load capacitance Enter SR for Series.
Blank *= ±30PPM
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 * = Standard
IT = Insulator Tab
TL = Third Lead
L2 = Alt. Third Lead
VS = Vinyl Sleeving
NOTE: Deviations on all parameters available.  Please consult Oscilent for details.
DEFINITIONS: Click on the characteristic name above for definitions of that particular characteristic.
*STANDARDS: "Blank" part number selections indicate standard variables for that particular characteristic.
PACKAGING: Add -TR for Tape/Reel. Click here for tape/reel specifications
STANDARD FREQUENCIES / LOAD CAPACITANCE - FOR GUIDE ONLY/ OTHER FREQ./LOADS AVAILABLE
FREQUENCY
(MHz)
LOAD (pF)
Series 12 13 16 17 18 20 32
1.000 - - Std. -- - - - -
1.8432 Std. - Std. - - - - Std.
2.000 Std. - - - - - Std. Std.
2.048 - Std. - - - - - -
2.4576 - - - - - - Std. Std.
2.500 Std. - - - - - - -
3.000 Std. - - - - - - -
3.2768 - - - - Std. - - -
3.579545 Std. - - - Std. - - -
3.6864 Std. - - - - Std. - -
3.93216 - - - - Std. - - -
4.000 Std. - - - - - Std. -
4.032 Std. - - - - - Std. -
4.096 - - - - - - Std. -
4.194304 - 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 - - - - - - -  
6.5536 - Std. - - - - - -
7.3728 Std. - - - - - Sd. -
7.680 - - - - - - Std. -
8.000   - - - - Std. Std. Std.
8.192 Std. - - - - - - -
9.216 Std. - - - - - Std. -
9.8304 Std. - - - - - Std. -
10.000 Std. - - - - - - -
10.738635 Std. - - - - - - -
11.000 Std. - - - - - - -
11.046 Std. - - - - - - -
11.0592 Std. - - - - - Std. Std.
11.228 Std. - - - - - - -
11.520 Std. - - - - - - -
11.98135 Std. - - - - - - -
12.000 Std. - - - - - Std. Std.
12.000393 - - - - - Std. - -
12.096 Std. - - - - - - -
12.288 Std. - - - - - Std. -
13.5168 Std. - - - - - - -
14.31818 Std. - - - - - Std. -
14.690 Std. - - - - - - -
14.7456 Std. - - - - - Std. -
15.000 Std. - - - - - - -
16.000 Std. - - - - - Std. -
16.000312 - - - - - Std. - -
18.000 Std. - - - - - Std. -
18.432 Std. - - - - Std. Std. -
19.6608 Std. - - - - - Std. -
20.000 Std. - - - - - Std. -
22.1184 Std. - - - - - - -
24.000(F) Std. - - - - - Std. -
24.00014 (F) - - - - - Std. - -
35.2512 (OT) - - - - - Std. - -
38.00053 (OT) - - - - - Std. - -
40.32 (OT) - - - - - Std. - -
48.00 (OT) Std. - - - - - - -
49.86 (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.  PEASE SPECIFY IN PART NUMBER GUIDE
Series No.:
141 to 142

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