HC-49/U
A-TYPE CRYSTAL
Page 1 of 3
A-1.8432-18-3RD
•
SPECIFICATIONS
PARAMETER
VALUE
NOMINAL FREQUENCY
MODE OF OSCILLATION
1.8432 MHz
Fundamental
FREQUENCY TOLERANCE AT 25°C
±30 ppm max
FREQUENCY STABILITY OVER TEMPERATURE
±50 ppm max
OPERATING TEMPERATURE RANGE
-20°C to +70°C
STORAGE TEMPERATURE RANGE
AGING
LOAD CAPACITANCE
EQUIVALENT SERIES RESISTANCE
SHUNT CAPACITANCE
DRIVE LEVEL
REFLOW CONDITIONS
-55°C to +125°C
±5 ppm first year max
18 pF
700 max
7 pF max
100 µW typ, 1000 µW max
260°C for 10 sec max
•
MECHANICAL SPECIFICATION
R ALT R ON ELEC TR ONIC S ▪ 10400 N .W. 33 rd ST R EET ▪ M iam i, F lorida 33172 ▪ U .S. A.
Telephone: 305-593-6033 ▪ Fax: 305-594-3973 ▪ e-mail: sales@raltron.com ▪ web site: http://www.raltron.com
HC-49/U
A-TYPE CRYSTAL
Page 2 of 3
A-1.8432-18-3RD
•
REFLOW PROFILE
tP
TP
Critical Zone
TL to TP
Ramp-up
TL
tL
TSMAX
Temp.
[°C]
TSMIN
Ramp-down
tS Preheat
Time [sec]
t[25°C] to Peak
Reflow profile
Temperature Min Preheat
Temperature Max Preheat
Time (TSMIN to TSMAX)
Temperature
Peak Temperature
Ramp-up rate
Ramp-down rate
Time within 5°C of Peak Temperature
Time t[25°C] to Peak Temperature
Time
•
TSMIN
TSMAX
tS
TL
TP
RUP
RDOWN
tP
t[25°C] to Peak
tL
150°C
200°C
60-180 sec
217°C
260°C
3°C/sec max
6°C/sec max
10 sec
480 sec
60-150 sec
ENVIRONMENTAL
PARAMETER
MOISTURE SENSITIVITY LEVEL
RoHS
REACH SVHC
HALOGEN-FREE
ESD CLASSIFICATION LEVEL
TERMINATION FINISH
VALUE
1
Compliant
Compliant
Compliant
N/A
Sn
R ALT R ON ELEC TR ONIC S ▪ 10400 N .W. 33 rd ST R EET ▪ M iam i, F lorida 33172 ▪ U .S. A.
Telephone: 305-593-6033 ▪ Fax: 305-594-3973 ▪ e-mail: sales@raltron.com ▪ web site: http://www.raltron.com
HC-49/U
A-TYPE CRYSTAL
Page 3 of 3
A-1.8432-18-3RD
•
MARKING
1.8432
18pF
Ryyxxww
x – Internal Production ID code
y – Year code
w – Week code
YEAR CODE
Year
Code
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Week
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
•
5
6
7
8
9
0
1
2
3
4
5
ALPHA WEEK CODE TABLE
Code
Week
Code
Week
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
s
t
u
v
w
x
y
z
A
B
C
D
E
F
G
H
I
J
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
Code
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
APPROVAL
DRAWN BY:
APPROVED BY:
REVISION:
A, Initial Release, May 6, 2008
A, Initial Release, May 6, 2008
B, Updated to current spec levels by
YLi, May 7, 2020
Raltron Electronics / RAMI Technology USA, LLC, including its affiliates, employees, agents and other persons acting on its behalf (collectively Raltron/RAMI Tech), disclaim any and all liability for any errors or inaccuracies contained in this
data sheet. While Raltron/RAMI Tech has made every reasonable effort ensure the accuracy of all product information, specifications and data contained herein, Raltron/RAMI Tech does not guarantee that the information is accurate, reliable
or current. The product information is provided only for reference purposes only and is subject to change, correction or revision, at any time without notice. Raltron/RAMI Tech does not assume any liability arising out of an application or use
of any product described herein and disclaims any warranties expressed or implied. The user of products in such applications shall assume all risks of such use and will agree to hold Raltron/RAMI Tech, harmless against all damages.
Copyright © 2016, Raltron Electronics / RAMI Technology USA, LLC. All rights reserved. No part of this document may be reproduced in any form without the prior written permission of Raltron Electronics / RAMI Technology USA,
LLC.
R ALT R ON ELEC TR ONIC S ▪ 10400 N .W. 33 rd ST R EET ▪ M iam i, F lorida 33172 ▪ U .S. A.
Telephone: 305-593-6033 ▪ Fax: 305-594-3973 ▪ e-mail: sales@raltron.com ▪ web site: http://www.raltron.com
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