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HC49/4H & HC49/3H CRYSTALS
ISSUE 9; 18 OCTOBER 1999
Delivery Options
n Common frequencies are available from stock. Please
see p4 for details
Holder Style
n HC49/4H & HC49/3H crystals are resistance welded,
hermetically sealed in an inert atmosphere with glass
to metal seals securing the lead wires.
n Holders suffixed ‘–3L have a centre third wire which
grounds the case
General Specifications
n Load Capacitance (CL): 10pF to 75pF or Series
n Drive Level: 500mW max.
www.DataShn eSett4atUic.cComapacitance (C0): 7pF max.
n Ageing: ±3ppm typical per year
Standard Frequency Tolerances and Stabilities
n ±10ppm, ±20ppm, ±30ppm, ±50ppm, ±100ppm
Operating Temperature Ranges
n 0 to 50°C
–10 to 60°C
–20 to 70°C
–30 to 80°C
–40 to 90°C
–55 to 105°C
Storage Temperature Range
n –55 to 125°C
Environmental Specification
n Shock: 981m/s2 for 6ms, three shocks in each direc-
tion along three mutually perpendicular planes
n Vibration: 10 to 60Hz 0.75mm displacement, 60 to
500Hz 98.1m/s2 acceleration, 30 minutes in each of
three mutually perpendicular planes
Marking
n Frequency only
Outline in mm (inches) - HC49/3H & HC49/3H-3L
3 .0 m a x
(0 .1 1 8 m a x )
3 .0 m a x
(0 .1 1 8 m a x )
Outline in mm (inches) - HC49/4H & HC49/4H-3L
4 .0 m a x
(0 .1 5 7 m a x )
4 .0 m a x
(0 .1 5 7 m a x )
Æ 0 .4 5
(Æ 0 .0 1 2 )
1 2 .7 m in
(0 .5 m in )
4 .8 8 (0 .1 9 2 )
4 .6 5 (0 .1 8 3 )
Æ 0 .4 5
(Æ 0 .0 1 2 )
==
4 .8 8 (0 .1 9 2 )
1 2 .7 m in
(0 .5 m in )
123
4 .6 5 (0 .1 8 3 )
1 1 .0 5
(0 .4 3 5 )
1 1 .0 5
(0 .4 3 5 )
P in c o n n e c ito n s
1 . C ry s ta l
2 . C a s e & g ro u n d
3 . C ry s ta l
Typical Frequency vs Temperature Curves
for various angles of AT-cut crystals
+ 25
0
–25
–50
–20
+ 25
T e m p e ra tu re (° C )
+ 70
Typical Frequency vs Temperature Curves
for various angles of BT-cut crystals
+ 10
0
+ 100
Æ 0 .4 3
(Æ 0 .0 1 7 )
1 3 .2 m in
(0 .5 2 m in )
4 .8 8 (0 .1 9 2 )
Æ 0 .4 3
(Æ 0 .0 1 7 )
==
4 .8 8 (0 .1 9 2 )
123
1 3 .2 m in
(0 .5 2 m in )
4 .6 5 (0 .1 8 3 )
4 .6 5 (0 .1 8 3 )
–50
1 1 .0 m a x
(0 .4 3 5 m a x )
1 1 .0 m a x
(0 .4 3 5 m a x )
P in c o n n e c tio n s
1 . C ry s ta l
2 . C a s e & g ro u n d
3 . C ry s ta l
Europe Tel: +44 (0)1460 74433 Fax: +44 (0)1460 72578
20
–50 –20
+ 25
T e m p e ra tu re (° C )
+ 70 + 100
Americas Tel: +1 919 941 0430 Fax: +1 919 941 0530

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Minimum Order Information Required
n Frequency + Holder + Frequency Tolerance @ 25°C + Frequency Stability + Operating Temperature Range +
Circuit Condition + Overtone Order
Electrical Specification – maximum limiting values
Frequency Range
Frequency Tolerance
@ 25°C ±2°C
Operating
Temperature Range
Frequency Stability Available Over
Operating Temperature
Minimum
Maximum
3.50 to < 5.0MHz
±15ppm to ±100ppm
0 to 50°C
±15ppm
±100ppm
–10 to 60°C
±20ppm
±100ppm
–20 to 70°C
±20ppm
±100ppm
–30 to 80°C
±25ppm
±100ppm
–40 to 90°C
±30ppm
±100ppm
–55 to 105°C
±100ppm
±500ppm
5.0 to < 8.0MHz
±15ppm to ±100ppm
0 to 50°C
±15ppm
±100ppm
–10 to 60°C
±20ppm
±100ppm
–20 to 70°C
±20ppm
±100ppm
www.DataSheet4U.com
–30 to 80°C
–40 to 90°C
±25ppm
±30ppm
±100ppm
±100ppm
–55 to 105°C
±100ppm
±500ppm
8.0 to < 12.0MHz
±15ppm to ±100ppm
0 to 50°C
±10ppm
±100ppm
–10 to 60°C
±15ppm
±100ppm
–20 to 70°C
±15ppm
±100ppm
–30 to 80°C
±20ppm
±100ppm
–40 to 90°C
±50ppm
±100ppm
–55 to 105°C
±50ppm
±100ppm
12.0 to < 25.0MHz
±15ppm to ±100ppm
0 to 50°C
±10ppm
±100ppm
–10 to 60°C
±15ppm
±100ppm
–20 to 70°C
±15ppm
±100ppm
–30 to 80°C
±20ppm
±100ppm
–40 to 90°C
±50ppm
±100ppm
–55 to 105°C
±50ppm
±100ppm
25.0 to 32.0MHz
±15ppm to ±100ppm
0 to 50°C
±10ppm
±100ppm
–10 to 60°C
±15ppm
±100ppm
–20 to 70°C
±15ppm
±100ppm
–30 to 80°C
±20ppm
±100ppm
–40 to 90°C
±50ppm
±100ppm
–55 to 105°C
±50ppm
±100ppm
20.0 to 40.0MHz
Inclusive with Frequency
Stability
0 to 50°C
–10 to 60°C
±50ppm
±50ppm
±100ppm
±100ppm
–20 to 70°C
±100ppm
±100ppm
–30 to 80°C
±100ppm
±100ppm
25.0 to 70.0MHz
±15ppm to ±100ppm
0 to 50°C
±15ppm
±100ppm
–10 to 60°C
±20ppm
±100ppm
–20 to 70°C
±20ppm
±100ppm
–30 to 80°C
±25ppm
±100ppm
–40 to 90°C
±50ppm
±100ppm
–55 to 105°C
±50ppm
±100ppm
Please Note: Frequencies 3.0 to 3.5MHz are available; please contact the sales office for more information.
ESR
max.
200W
120W
70W
50W
30W
50W
100W
Vibration
Mode
Fundamental
AT cut
Fundamental
AT cut
Fundamental
AT cut
Fundamental
AT cut
Fundamental
AT cut
Fundamental
BT cut
3rd Overtone
AT cut
Europe Tel: +44 (0)1460 74433 Fax: +44 (0)1460 72578
21
Americas Tel: +1 919 941 0430 Fax: +1 919 941 0530