HC-49U Crystal Unit
MXF series
FEATURE
Wide Frequency Range
Resistance Welded
High precision and high frequency stability
Applications: Data Application, Computer Machines, Printers, CPU,
Memory, Test Equipment, Large Pullability Applications
PART NUMBERING SYSTEM
MXF F H
J
C 1M8432
(1)
(2) (3) (4) (5)
(6)
Code
No
(1)
(2)
(3)
(4)
(5)
(6)
Item
Description
Crystal Unit
Series Reference
Meritek Series
MXF
F
HC-49U
Load Capacitance
Frequency Tolerance
Stability vs Oper Temp.
Operating Temp.
Frequency
F: 20pF
E: 18pF, R: Series Resonance (see options)
F: ±20ppm, G: ±25ppm (see options)
H
H: ±30ppm
J: ±50ppm
C: -20~+70ºC
J
G: ±25ppm, H: ±30ppm (see options)
C
C: -20~+70ºC, I: -40~+85ºC (see options)
1M8432 ~ 200M0 (M denotes decimal point)
1M8432 1M8432: 1.8432 MHz
DIMENSIONS AND RECOMMENDED PATTERN
Item
Size
Item
E
Size
A
11.5 max.
10.3 max.
13.46 max.
3.8 max.
5.0 max.
0.457 max.
4.88±0.20
12.7 min.
B
d
C
p
D
L
(Unit: mm)
AVAILABLE OPTIONS
Parameters
Part Number Options
R: Series Resonance, 3: 3pF ~ 8: 8pF,
A: 10pF, B: 12pF, C: 15pF, D: 16pF, E: 18pF, F: 20pF, K: 22pF, G: 25pF, H: 30pF, L: 32pF
Load Capacitance
Frequency Tolerance
Stability vs Oper Temp.
Operating Temperature
A: ±10ppm, C: ±15ppm, F: ±20ppm, G: ±25ppm, H: ±30ppm, J: ±50ppm
A: ±10ppm, C: ±15ppm, F: ±20ppm, G: ±25ppm, H: ±30ppm, J: ±50ppm, K: ±100ppm
B: 0~+70°C, A: -10~+60°C, C: -20~+70°C, K: -30~+85°C, I: -40~+85°C, R: -40~+105°C
Note: Custom options available. Contact Meritek for more information.
Rev.7a 12/22/2017
Meritek Electronics Corporation | www.meritekusa.com