MICROPROCESSOR CRYSTAL UNITS
SERIES A, B, C
FEATURES
HC-49/U, HC-51/U, AND UM-1
EXCELLENT CLOCK SIGNAL GENERATOR FOR CPU’s
WIDE FREQUENCY RANGE
INDUSTRY STANDARD PACKAGES
SPECIFICATIONS
FREQUENCY RANGE
HOLDER TYPES
100.00 KHz TO 300.00 MHz
A: HC-49/U
B: HC-51/U
C: UM-1
1.00 MHz TO 300.00 MHz
100.00 KHz TO 4.00 MHz
8.00 MHz TO 300.00 MHz
±30 PPM TYPICAL
±50 PPM MAXIMUM
FREQUENCY TOLERANCE AT 25 °C
±50 PPM TYPICAL
±100 PPM MAXIMUM
FREQUENCY STABILITY OVER TEMPERATURE
OPERATING TEMPERATURE RANGE
-20 °C TO +70 °C STANDARD
-40° C TO +85 °C EXTENDED
-55 °C TO +125 °C
STORAGE TEMPERATURE RANGE
AGING
±5 PPM PER YEAR MAXIMUM
LOAD CAPACITANCE
10 TO 32 pF 0R SERIES
7 pF MAXIMUM
SHUNT CAPACITANCE
EQUIVALENT SERIES RESISTANCE (ESR)
DRIVE LEVEL
SEE PAGE 11
0.1 mW TYPICAL
1 mW MAXIMUM
±5 PPM MAXIMUM 75 cm DROP TEST IN 3 AXES ONTO A HARD
SURFACE OR 1000 g’s x 0.5 ms x ½ SINEWAVE IN 3 AXES
SHOCK RESISTANCE
FREQUENCY RANGE AND MODE OF OSCILLATION BY HOLDER TYPE
FUNDAMENTAL
(FUND)
THIRD OVERTONE
(3OT)
FIFTH OVERTONE
(5OT)
SEVENTH OVERTONE
(7OT)
NINTH OVERTONE
(9OT)
HOLDER TYPE
TYPE A: HC-49/U
TYPE B: HC-51/U
TYPE C: UM-1
1.00 MHz TO 65.00 MHz
100.00 KHz TO 4.00 MHz
8.00 MHz TO 65.00 MHz
20.00 MHz TO 90.00 MHz 60.00 MHz TO 130.00 MHz 125.00 MHz TO 200.00 MHz 180.00 MHz TO 300.00 MHz
25.00 MHz TO 90.00 MHz 60.00 MHz TO 130.00 MHz 125.00 MHz TO 200.00 MHz 180.00 MHz TO 300.00 MHz
PART NUMBERING SYSTEM
EXTENDED
TEMPERATURE
HOLDER TYPE
FREQUENCY
LOAD CAPACITANCE
MODE
F
FUNDAMENTAL
THIRD OVERTONE
FIFTH OVERTONE
SEVENTH OVERTONE
NINTH OVERTONE
-
-
-
-
A
B
C
HC-49/U
HC-51/U
UM-1
3OT
5OT
7OT
9OT
10 TO 32pF FOR PARALLEL
S FOR SERIES
IN MHz
EXT
MECHANICAL OPTIONS
THIRD LEAD
TAPE AND REEL
-
THREE PIN BASE
3PIN
SPACER
SP
SLEEVE
SL
(TOP OF HOUSING)
-
-
-
TR
3RD
† FUNDAMENTAL MODE NOT NEEDED IN PART NUMBER
EXAMPLE: A-4.000-S
A-3.579545-18-EXT-3PIN-SP-SL-TR
C-65.000-S-30T
Raltron Electronics Corporation 10651 NW 19th St. Miami, Florida 33172 U.S.A.
Tel: 305-593-6033 Fax: 305-594-3973 e-mail: sales@raltron.com Internet: http://www.raltron.com
RALTRON [ Raltron Electronics Corporation ]
