Datenblatt

Quartz Crystal Units
HC-49/U-2H, HC-49/U-3H & HC-49/U-4H FAMILY
STANDARD THROUGH-HOLE CRYSTALS
±50 ppm over -20゜
C to +70゜
C
Load capacitance (CL)
16 pF, Typical
Shunt capacitance (C0)
5 pF max.
Drive level (P)
BT-Cut / Fundamental / 28.636363 MHz to 50.000 MHz
AT-Cut / 3rd overtone / 26.690000 MHz to 61.000 MHz
VCXO
PART NUMBERING GUIDE
Actual size
0.4432 gm (wt.)
Holder type
Frequency designator
TCXO
SMI Part No.
Actual size
OCXO
0.535 gm (wt.)
Φ0.43
2.1 max.
3.8 max.
Circuit Calibration Condition
Frequency
2H221-18
2H = HC-49/U-2H
Parallel resonance
CL = 18 pF
221 = 22.1184 MHz
3H450S
3H = HC-49/U-3H
S = Series resonance
450 = 45.000 MHz
4H080-16
4H = HC-49/U-4H
Parallel resonance
CL = 16 pF
080 = 8.000 MHz
HC-49/U-2H
HC-49/U-3H
HC-49/U-4H
Cover
Metal
Metal
Metal
Base
Metal
Metal
Metal
Resistance
Resistance
Resistance
Alloy (FeNiCo)
Alloy (FeNiCo)
Alloy (FeNiCo)
SnCu
SnCu
SnCu
Compliant (Pb-free)
Compliant (Pb-free)
Compliant (Pb-free)
HOLDER DATA
Holder
Sealing
Terminal lead
Terminal plating
5.0 max.
4.88
MCF
Holder
Item
12.0 min.
10.5 max.
RoHS
11.35 max.
5.0 max.
44
10.5 max.
3.5 max.
Φ0.43
12.0 min.
3.8 max.
4.88
4.88
11.35 max.
HC-49/U-4H
5.0 max.
Φ0.43
12.0 min.
10.5 max.
2.5 max.
HC-49/U-3H
Load capacitance (CL)
Example
HC-49/U-4H
HC-49/U-2H
4H 080 -16
11.35 max.
3.8 max.
-20
-40
-60
-80
-30
-15
0
+15
+30
+45
+60
+75
C)
+90 (゜
TYPICAL TEMPERATURE CHARACTERISTICS
AT-Cut / Fundamental / 3.579545 MHz to 40.000 MHz
Cut / Oscillation mode
0
-100
-45
100 μW max. (10 μW for testing)
±5 ppm max. at +25゜
C ±3゜
C per year
Aging
+20
∆f/f
BT-CUT
(ppm)
20
0
-20
-40
-60
-80
-100
∆f/f -120
-140
-160
-180
-200
-220
-240
-40
-25
-10
+5
+20
+35
+50
+65
+80
TYPICAL TEMPERATURE CHARACTERISTICS
C)
+95 +110 (゜
3.579545
3.580000
3.648000
3.686400
3.840000
3.932160
4.000000
4.032000
4.096000
4.194304
4.433000
4.433619
4.500000
4.608000
4.800000
4.906250
4.915200
5.000000
5.089062
5.333000
5.333333
5.699623
6.000000
6.144000
6.176000
6.480000
6.745800
6.764300
6.764380
6.776170
6.783600
7.372800
7.500000
7.680000
8.000000
8.190000
8.192000
8.400000
9.000000
9.031600
9.216000
9.600000
9.690900
9.690990
9.718750
9.830400
9.843750
10.000000
10.111000
10.202000
10.245000
10.368000
10.781200
11.000000
11.059200
11.290000
12.000000
12.270000
12.288000
12.296000
12.334375
13.000000
13.234370
13.248000
13.401560
13.406250
035
0358
0364
0368
0384
039
040
0403
0409
041
0443
044
045
046
048
04906
049
050
0508
05333
053
056
060
061
0617
0648
0674
067643
0676
0677
0678
073
075
0768
080
0819
08192
084
090
0903
092
096
096909
0969099
0971
098
0984
100
101
102
10245
103
1078
110
1105
1129
120
1227
122
1229
12334
130
1323
132
13401
13406
Max.
Equivalent
Series
Resistance
Ohms (Ω) ESR
200
200
200
200
200
200
150
150
150
150
150
150
150
150
150
150
150
120
120
120
120
120
100
100
100
100
100
100
100
100
100
80
80
80
80
80
80
80
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
50
50
50
50
50
Frequency
MHz
Frequency
Designator
13.410000
13.500000
13.544375
13.560000
13.567200
13.577000
14.000000
14.316000
14.318180
14.400000
14.580000
14.745600
15.000000
15.360000
15.980000
16.000000
16.384000
16.588000
16.934400
17.700000
17.734470
17.734475
18.000000
18.432000
19.069929
19.200000
19.260000
19.312000
19.440000
19.608000
19.660800
19.680000
20.000000
20.250000
20.250800
20.476000
20.480000
20.945000
22.118400
22.425000
22.525000
22.787500
22.887500
23.000000
23.600000
23.975000
24.000000
24.576000
25.000000
26.500000
26.540000
26.800000
26.998435
27.000000
27.145000
27.586000
28.000000
28.224000
28.636000
28.636300
28.636363
28.920000
29.000000
29.491200
29.498900
30.000000
1341
135
1354
1356
135672
13577
140
14316
143
144
1458
147
150
153
1598
160
163
1658
1693
177
1773447
1773
180
184
19069929
192
1926
193
194
19608
196
1968
200
2025
202508
20476
2048
20945
221
22425
22525
227875
22887
230
236
23975
240
245
250
265
2654
268
26998
270
27145
2758
280
282
28636
286363
2863
2892
290
294
294989
300
Max.
Equivalent
Series
Resistance
Ohms (Ω) ESR
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
Frequency
MHz
Frequency
Designator
30.800000
31.708000
32.000000
32.110000
32.768000
33.000000
33.177600
33.333000
33.868800
35.468950
36.000000
36.864000
37.745000
38.000000
40.000000
40.685000
40.750000
43.391670
45.000000
48.000000
49.860000
50.000000
50.032000
50.803200
54.000000
61.000000
308
317
320
321
32768
330
3317
33333
338
354
360
368
377
380
400
4068
4075
4339
450
480
4986
500
50032
508
540
610
Max.
Equivalent
Series
Resistance
Ohms (Ω) ESR
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
40 (BT-Cut)
XTAL
Temperature stability (referred to +25゜
C)
+40
Frequency
Designator
CLK OSC
HC-49/U-3H
Frequency tolerance
3.579545 MHz to 61.000 MHz
±50 ppm at +25゜
C ±3゜
C
+60
Frequency
MHz
VCXO
CLK OSC
0.336 gm (wt.)
+80
HC-49/U-2H, HC-49/U-3H & HC-49/U-4H
Frequency range
Actual size
+100
TCXO
Specifications
OCXO
XTAL
Item
Holder type
HC-49/U-2H, 3H & 4H STANDARD FREQUENCIES
AT-CUT
(ppm)
MCF
STANDARD SPECIFICATIONS
HC-49/U-2H
45
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