HC49/4H & HC49/3H CRYSTALS
ISSUE 9; 18 OCTOBER 1999
Delivery Options
nCommon frequencies are available from stock. Please
see p4 for details
Holder Style
nHC49/4H & HC49/3H crystals are resistance welded,
hermetically sealed in an inert atmosphere with glass
to metal seals securing the lead wires.
nHolders suffixed ‘–3L have a centre third wire which
grounds the case
General Specifications
nLoad Capacitance (CL): 10pF to 75pF or Series
nDrive Level: 500mW max.
nStatic Capacitance (C0): 7pF max.
nAgeing: ±3ppm typical per year
Standard Frequency Tolerances and Stabilities
n±10ppm, ±20ppm, ±30ppm, ±50ppm, ±100ppm
Operating Temperature Ranges
n0 to 50°C –30 to 80°C
–10 to 60°C –40 to 90°C
–20 to 70°C –55 to 105°C
Storage Temperature Range
n–55 to 125°C
Environmental Specification
nShock: 981m/s2for 6ms, three shocks in each direc-
tion along three mutually perpendicular planes
nVibration: 10 to 60Hz 0.75mm displacement, 60 to
500Hz 98.1m/s2acceleration, 30 minutes in each of
three mutually perpendicular planes
Marking
nFrequency 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 in
(0 .5 m in )
4.0 m ax
(0.157 m ax)
4.88 (0.192)
4.65 (0.183)
11.05
(0.435)
Æ
0.45
(
Æ
0.012)
Pin connecitons
1. Crystal
2. Case & ground
3. Crystal
4.0 m ax
(0.157 m ax)
4.65 (0.183)
1 1 .0 5
(0.435)
1 2 .7 m in
(0 .5 m in )
4.88 (0.192)
Æ
0.45
(
Æ
0.012)
==
123
Outline in mm (inches) - HC49/4H & HC49/4H-3L
25
Tem perature (°C)
50
0
+25
+100
+25 +7020
Df/f
0
(p p m )
Typical Frequency vs Temperature Curves
for various angles of AT-cut crystals
50
Tem perature (°C)
50
+10
+100
+25 +7020
0
Df/f0 (p p m )
Typical Frequency vs Temperature Curves
for various angles of BT-cut crystals
3.0 m ax
(0 .1 1 8 m a x )
1 3 .2 m in
(0 .5 2 m in )
==
123
Pin connections
1. Crystal
2. Case & ground
3. Crystal
Æ
0.43
(
Æ
0.017)
4 .8 8 (0 .1 9 2 )
4.65 (0.183)
11.0 m ax
(0 .4 3 5 m a x )
4 .8 8 (0 .1 9 2 )
4.65 (0.183)
11.0 m ax
(0 .4 3 5 m a x )
1 3 .2 m in
(0 .5 2 m in )
3.0 m ax
(0 .1 1 8 m a x )
Æ
0.43
(
Æ
0.017)
Outline in mm (inches) - HC49/3H & HC49/3H-3L
Minimum Order Information Required
nFrequency + 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
ESR
max.
Vibration
Mode
Minimum Maximum
3.50 to < 5.0MHz ±15ppm to ±100ppm 0 to 50°C ±15ppm ±100ppm 200WFundamental
AT cut
–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 120WFundamental
AT cut
–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
8.0 to < 12.0MHz ±15ppm to ±100ppm 0 to 50°C ±10ppm ±100ppm 70WFundamental
AT cut
–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 50WFundamental
AT cut
–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 30WFundamental
AT cut
–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 ±50ppm ±100ppm 50WFundamental
BT cut
–10 to 60°C ±50ppm ±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 100W3rd Overtone
AT cut
–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.
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