75 South Street, Hopkinton, MA 01748 800-982-5737 508-435-6831 Fax: 508-435-5289 www.valpeyfisher.com
103
A D V A N C E D P R O D U C T S
VF37RT
* Long .018 diameter leads available.
All dimensions are typical unless
otherwise specified.
VF37RT
Precision ResonatorThermostat
in TO 8 Package
F E AT U R E S
Incorporated Thermo Controller
Precision Resonator
3rd O/T SC Cut
Low Power Consumption
Low Aging
Parameter
Symb
Condition
Min
Typ
Max
Unit
Note
Input Break
Vcc
0.5
13.5
V
Down Voltage
Storage Ts
40
+85
C
Temperature
Frequency F
10.000
MHz
1
Input Voltage
Vcc
4.75
5.00
5.25
V
2
Input Current
Icc
@ 25C
15
20
mA
Vcc=12V
Steady State
25
35
Vcc=5V
Input Current
Icc
200
mA
Vcc=12V
Start-up
90
Vcc=5V
Warmup Time
t
to 0.1 ppm
15s
s
Vcc=12V
accuracy
35s
s
Vcc=5V
Cut, Mode
Calibration
@ series
2
ppm
Customer
Specified
Frequency
F/F
vs.
50
80
ppb
@5V
Stability
Temperature
30
50
@12V
Aging
F/F
per day
0.001
ppm
after 30
per year
0.1
days,
drive level
<50 W
Motional
ESR
120
200
Ohm
Resistance
Motional
L1
1.0
H
Inductance
Retrace
After 30 minutes
20
ppb
Gsensitivity Worst
direction
1
ppb/G
Operating
Temperature Range
30C to +70C
Mechanical Shock
Per MILSTD202, 30G, 11ms
Vibration
Per MILSTD202, 5G, 10 to 2000Hz
Soldering Conditions
260C, for 10s, Max., leads only
Hermetic Seal
Leak rate less than 1 x 10
8
atm.cc/s of helium
Pin Out
Pin #1Case
Pin #2Vcc
Pin #3Crystal
Pin #4Ground
Pin #5Crystal
SC, 3rd overtone
Absolute
Max. Ratings
Electrical
Environmental and Mechanical
Electrical
Connections
Cr
ystal Resonator Parameters
Notes:
1. Available in frequency range 8 to 20 MHz, above parameters specified for 10 MHz.
2. Customer may specify Vcc from 5V to 12V, 5%, 10%.
All specifications are subject to change without notice.
0.500"
(12,7mm)
0.343"
(8,71mm)
0.300"
(7,62mm)
0.200"
(5,08mm)
0.100"
(2,54mm)
4
3
2
1
5
0.200"
(5,08mm)
0.100"
(2,54mm)
0.580"
(14,73mm)
0.030"
(0,76mm)*
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