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! Note ? Please read rating and ! CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
? This catalog has only typical speci?cations. Therefore, please approve our product speci?cations or transact the approval sheet for product speci?cations before ordering.
Overheat Sensing Chip Type (Related Data)
R90E.pdf
Mar.4,2014
c Standard Land Pattern Dimensions
c Resistance - Temperature Characteristics (Typical)
Chip
Solder resist
Land
1000
BG
BF
BE
BD
BC
BB
BA
AR
100
AS
b
a
(in mm)
Part Number
PRF15
Soldering
Methods
Dimensions (mm)
Chip (L g W) a b c
1.0 g 0.5
0.5 0.4-0.5 0.5
10
PRF18
Reflow Soldering
1.6 g 0.8
0.6-0.8 0.6-0.7 0.6-0.8
PRF21
2.0 g 1.25
1.0-1.2 0.5-0.7 1.0-1.2
1
0.1
–20
0
20
40
60
80
100
120
140
160
Temperature (°C)
c Overheat Protection Circuit
+Vcc
c Temperature Sensing Circuit
+Vcc
PTH
R 1
Thermal
Connection
R L
R 1
R L1
R E2
R L2
72
R 2
R E
PTH
R E1
Load
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