鈥?/div>
Tape and reel, 3000 pcs
The XT38P is a 2.5 mm height plastic molded 32.768 KHz
SMD crystal unit. This thermoplastic molded rugged part is
perfect for your SMD applications in limited circuit space
using the watch frequency.
鈥?/div>
100 % Lead (Pb)-free and RoHS compliant
RoHS
COMPLIANT
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Frequency Range
Frequency Tolerance
Frequency Coefficient
Operating Temperature Range
Storing Temperature Range
Shunt Capacitance
Motional Capacitance
Load Capacitance
Insulation Resistance
Drive Level
Aging (first year)
Equivalent Series Resistance(ESR)
SYMBOL
F
O
鈭咶/F
O
K
T
OPR
T
STG
C
O
C
1
CL
IR
DL
Fa
Rs
CONDITION
at 25 擄C
parabolic coefficient
UNIT
KHz
ppm
ppm/擄C
2
擄C
擄C
pF
fF
pF
M鈩?/div>
碌W
ppm
K鈩?/div>
MIN
-20
-0.027
-40
-55
TYPICAL
32.768
-0.035
MAX
+20
-0.043
+85
+125
1.0
2.0
12.5
500
1.0
鹵3.0
50
at 25 擄C 鹵 3 擄C
DIMENSIONS
in inches [millimeters]
XT38PA
0.343 [8.7] Max.
0.098
[2.5]
Max.
0.020
鹵
0.04
[0.5
鹵
0.1]
0.45
鹵
0.08
[1.15
鹵
0.2]
PARABOLIC TEMPERATURE CURVE
TEMPERATURE (擄C)
- 20
- 10
0
10
20
30
40
50
60
70
- 10
- 20
- 30
0.217
鹵
0.04
[5.5
鹵
0.1]
0.45
鹵
0.08
[1.15
鹵
0.2]
#1
- 40
#2
0.146
[3.7]
Max.
- 50
- 60
#4
#3
鈭咶/f(ppm)
ORDERING INFORMATION
XT38P
MODEL
A
32.768 KHz
e6
JEDEC Lead
(Pb)-Free
STANDARD
To determine frequency stability, use parabolic curvature (k).
For example: What is stability at 45 擄C?
1) Change in Temperature (擄C) = 45 - 25 = 20 擄C
2) Change in Frequency = - 0.042 ppm*(鈭喡癈)
= - 0.042 ppm*(20)
2
= - 16.8 ppm(max)
PAD LAYOUT FREQUENCY/KHz
GLOBAL PART NUMBER
X
T
3
MODEL
8
P
A
PAD
LAYOUT
A
PACKAGE
CODE
3
2
K
7
6
8
FREQUENCY
www.vishay.com
8
For technical questions contact: frequency@vishay.com
Document Number: 35022
Revision: 17-Jun-05
VISHAY
1
