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Электронный компонент: L108K

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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 (C
L
): 10pF to 75pF or Series
n
Drive Level: 500
m
W max.
n
Static Capacitance (C
0
): 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 50C
30 to 80C
10 to 60C
40 to 90C
20 to 70C
55 to 105C
Storage Temperature Range
n
55 to 125C
Environmental Specification
n
Shock: 981m/s
2
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/s
2
acceleration, 30 minutes in each of
three mutually perpendicular planes
Marking
n
Frequency only
Europe Tel: +44 (0)1460 74433
Fax: +44 (0)1460 72578
20
Americas Tel: +1 919 941 0430
Fax: +1 919 941 0530
QUARTZ CRYSTALS
1 2 . 7 m i n
( 0 . 5 m i n )
4 . 0 m a x
( 0 . 1 5 7 m a x )
4 . 8 8 ( 0 . 1 9 2 )
4 . 6 5 ( 0 . 1 8 3 )
1 1 . 0 5
( 0 . 4 3 5 )
0 . 4 5
(
0 . 0 1 2 )
P i n c o n n e c i t o n s
1 . C r y s t a l
2 . C a s e & g r o u n d
3 . C r y s t a l
4 . 0 m a x
( 0 . 1 5 7 m a x )
4 . 6 5 ( 0 . 1 8 3 )
1 1 . 0 5
( 0 . 4 3 5 )
1 2 . 7 m i n
( 0 . 5 m i n )
4 . 8 8 ( 0 . 1 9 2 )
0 . 4 5
(
0 . 0 1 2 )
= =
1 2 3
Outline in mm (inches) - HC49/4H & HC49/4H-3L
2 5
T e m p e r a t u r e ( C )
5 0
0
+ 2 5
+ 1 0 0
+ 2 5
+ 7 0
2 0
D
f/
f
0
(p
p
m
)
Typical Frequency vs Temperature Curves
for various angles of AT-cut crystals
5 0
T e m p e r a t u r e ( C )
5 0
+ 1 0
+ 1 0 0
+ 2 5
+ 7 0
2 0
0
D
f/
f
0
(p
p
m
)
Typical Frequency vs Temperature Curves
for various angles of BT-cut crystals
3 . 0 m a x
( 0 . 1 1 8 m a x )
1 3 . 2 m i n
( 0 . 5 2 m i n )
= =
1 2 3
P i n c o n n e c t i o n s
1 . C r y s t a l
2 . C a s e & g r o u n d
3 . C r y s t a l
0 . 4 3
(
0 . 0 1 7 )
4 . 8 8 ( 0 . 1 9 2 )
4 . 6 5 ( 0 . 1 8 3 )
1 1 . 0 m a x
( 0 . 4 3 5 m a x )
4 . 8 8 ( 0 . 1 9 2 )
4 . 6 5 ( 0 . 1 8 3 )
1 1 . 0 m a x
( 0 . 4 3 5 m a x )
1 3 . 2 m i n
( 0 . 5 2 m i n )
3 . 0 m a x
( 0 . 1 1 8 m a x )
0 . 4 3
(
0 . 0 1 7 )
Outline in mm (inches) - HC49/3H & HC49/3H-3L
Minimum Order Information Required
n
Frequency + Holder + Frequency Tolerance @ 25C + Frequency Stability + Operating Temperature Range +
Circuit Condition + Overtone Order
Electrical Specification maximum limiting values
Frequency Range
Frequency Tolerance
@ 25C 2C
Operating
Temperature Range
Frequency Stability Available Over
Operating Temperature
ESR
max.
Vibration
Mode
Minimum
Maximum
3.50 to < 5.0MHz
15ppm to 100ppm
0 to 50C
15ppm
100ppm
200
W
Fundamental
AT cut
10 to 60C
20ppm
100ppm
20 to 70C
20ppm
100ppm
30 to 80C
25ppm
100ppm
40 to 90C
30ppm
100ppm
55 to 105C
100ppm
500ppm
5.0 to < 8.0MHz
15ppm to 100ppm
0 to 50C
15ppm
100ppm
120
W
Fundamental
AT cut
10 to 60C
20ppm
100ppm
20 to 70C
20ppm
100ppm
30 to 80C
25ppm
100ppm
40 to 90C
30ppm
100ppm
55 to 105C
100ppm
500ppm
8.0 to < 12.0MHz
15ppm to 100ppm
0 to 50C
10ppm
100ppm
70
W
Fundamental
AT cut
10 to 60C
15ppm
100ppm
20 to 70C
15ppm
100ppm
30 to 80C
20ppm
100ppm
40 to 90C
50ppm
100ppm
55 to 105C
50ppm
100ppm
12.0 to < 25.0MHz
15ppm to 100ppm
0 to 50C
10ppm
100ppm
50
W
Fundamental
AT cut
10 to 60C
15ppm
100ppm
20 to 70C
15ppm
100ppm
30 to 80C
20ppm
100ppm
40 to 90C
50ppm
100ppm
55 to 105C
50ppm
100ppm
25.0 to 32.0MHz
15ppm to 100ppm
0 to 50C
10ppm
100ppm
30
W
Fundamental
AT cut
10 to 60C
15ppm
100ppm
20 to 70C
15ppm
100ppm
30 to 80C
20ppm
100ppm
40 to 90C
50ppm
100ppm
55 to 105C
50ppm
100ppm
20.0 to 40.0MHz
Inclusive with Frequency
Stability
0 to 50C
50ppm
100ppm
50
W
Fundamental
BT cut
10 to 60C
50ppm
100ppm
20 to 70C
100ppm
100ppm
30 to 80C
100ppm
100ppm
25.0 to 70.0MHz
15ppm to 100ppm
0 to 50C
15ppm
100ppm
100
W
3rd Overtone
AT cut
10 to 60C
20ppm
100ppm
20 to 70C
20ppm
100ppm
30 to 80C
25ppm
100ppm
40 to 90C
50ppm
100ppm
55 to 105C
50ppm
100ppm
Please Note: Frequencies 3.0 to 3.5MHz are available; please contact the sales office for more information.
Europe Tel: +44 (0)1460 74433
Fax: +44 (0)1460 72578
21
Americas Tel: +1 919 941 0430
Fax: +1 919 941 0530
QUARTZ CRYSTALS