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
HIGH ACCURACY CRYSTAL UNITS
FREQUENCY RANGE
1.00 MHz TO 360.00 MHz
HOLDER TYPES
A: HC-49/U
1.00 MHz TO 360.00 MHz
C: UM-1
8.00 MHz TO 300.00 MHz
C4: UM-4
10.00 MHz TO 300.00 MHz
C5: UM-5
10.00 MHz TO 300.00 MHz
FREQUENCY TOLERANCE AT 25C
5 PPM TO 25 PPM
FREQUENCY STABILITY OVER TEMPERATURE
3 PPM (-10C TO +60C) TO
50 PPM (-55C TO +125C)
OPERATING TEMPERATURE RANGE
-55C TO +125C MAXIMUM
LOAD CAPACITANCE
10 pF TO 50 pF OR SERIES
AGING PER YEAR
3 PPM MAXIMUM
MODE OF OSCILLATION
FUNDAMENTAL THRU NINTH OVERTONE
EQUIVALENT SERIES RESISTANCE (ESR)
SEE PAGE 3
DRIVE LEVEL
0.1 uW TYPICAL
UM-5
Scale none Dimension in
mm
inch
4.80
.189
0.35 DIA
.014 DIA
12.00 MIN
.472 MIN
3.75
.148
3.20
.126
7.90 MAX
.311 MAX
UM-4
6.00
.236
12.00 MIN
.472 MIN
0.35 DIA
.014 DIA
.148
3.75
7.90 MAX
.311 MAX
.126
3.20
REFER TO PAGE X FOR ADDITIONAL OUTLINE DRAWINGS
FEATURES
OUTLINE DRAWINGS
PART NUMBERING SYSTEM
SPECIFICATIONS
HOLDER TYPE
-
FREQUENCY
-
LOAD CAPACITANCE
-
MODE
-
EXTENDED
TEMPERATURE
A
B
C
C4
C5
HC-49/U
HC-51/U
UM-1
UM-4
UM-5
IN MHz
10 TO 32pF FOR PARALLEL
S FOR SERIES
FUND
3OT
5OT
7OT
9OT
FUNDAMENTAL
THIRD OVERTONE
FIFTH OVERTONE
SEVENTH OVERTONE
NINTH OVERTONE
EXT
MECHANICAL OPTIONS
-
TAPE AND REEL
THREE PIN BASE
-
THIRD LEAD
(TOP OF HOUSING)
-
SPACER
-
SLEEVE
T
3PIN
3RD
SP
SL
EXAMPLE: A-4.000-18-EXT-3PIN-SP-SL-T
C4-50.000-S-30T
TIGHT TOLERANCE AND STABILITY OVER TEMPERATURE
WIDE FREQUENCY RANGE
EXCELLENT FREQUENCY SOURCE FOR TELECOM APPLICATIONS
FUNDAMENTAL MODE NOT NEEDED IN PART NUMBER
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