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HC51 & HC47 CRYSTALS
ISSUE 8; 19 JUNE 1997
Delivery Options
Common frequencies are available from stock. Please
see p6 for details
3 day Express Manufacturing Service, subject to piece
part stock availability
Holder Style
HC51 crystals are resistance welded, hermetically
sealed in an inert atmosphere with glass to metal seals
securing the lead wires; HC48 is plug–in version
HC47 crystals are cold welded; HC36 is plug–in ver-
sion
Holders suffixed ‘–3L have a centre third wire which
grounds the case; this is not applicable to the HC36
and HC48
General Specifications
Load Capacitance (C
L
): 10pF to 75pF or Series
Drive Level: 1mW max.
Static Capacitance (C
0
): 9pF max.
Ageing: ±3ppm typical per year
Standard Frequency Tolerances and Stabilities
±10ppm, ±15ppm, ±20ppm, ±30ppm, ±50ppm,
±100ppm
Operating Temperature Ranges
0 to 50°C
–10 to 60°C
–20 to 70°C
–30 to 80°C
–40 to 90°C
–55 to 105°C
–55 to 125°C
Storage Temperature Range
–55 to 125°C
Environmental Specification
Shock: 981m/s
2
for 6ms, three shocks in each direc-
tion along three mutually perpendicular p lanes
Vibration: 10 to 60Hz 0.75mm displacement, 60 to
500Hz 98.1m/s
acceleration, 30 minutes in each of
three mutually perpendicular planes
Marking
Includes Frequency
Minimum Order Information Required
Frequency + Holder + Frequency Tolerance @ 25°C
+ Frequency Stability + Operating Temperature
Range + Circuit Condition + Overtone Order
EuropeTel:+44(0)146074433
Fax:+44(0)146072578
26
Americas Tel:+19199410430
Fax:+19199410530
Q
C
Outline in mm (inches) - HC48 & HC36
' +# + )
%
Typical Frequency vs Temperature Curves
for various angles of AT-cut crystals
19.05 (0.75)
19.43 max
(0.765 max)
12.7 mn
(0.5 min)
8.86
(0.349)
0.76
( 0.03)
1
2
3
Pin connections
1. Crystal
2. Case & ground
3. Crystal
19.05 (0.75)
8.86
(0.349)
0.76
( 0.03)
12.34 (0.486)
12.34 (0.486)
Outline in mm (inches) - HC51 & HC51-3L