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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.
R90E.pdf
Mar.4,2014
c Resistance - Temperature Characteristics
c Example of Thermal Response Time
Operating Time of POSISTOR r
100
10 4
BB
BC
BD
80
10 3
BE
PTFM04BE222Q2N34BS
BF
POSISTOR r
R meter
10 2
BG
BH
60
Screw
40
Heater
Aluminum plate
10
1
20
T=90°C constant
0
0
10
20
30
40
50
60
Time (sec.)
Relation between resistance change and time after POSISTOR r
–20
0
20
40 60 80
100
120
140
PTFM04BE222Q2N34BS is installed on the part heated at a constant
Temperature (°C)
c Overheat Protection Circuit
+Vcc
temperature of 90°C (3mm thick alminum sheet) is shown in the figure above.
c Overheat Sensing Circuit
+Vcc
PTH
R 1
Thermal
Connection
R L
R 1
R L1
R E2
R L2
R 2
R E
c Resistance - Temperature Characteristics Range (Ref. Only)
PTH
R E1
Load
10 4
10 3
10 2
10
PTF_04BH471Q Type
10 4
10 3
10 2
10
PTF_04BG471Q Type
14
–20
0
20
40
60
80
100
120
140
–20
0
20
40
60
80
100
120
140
Temperature (°C)
Temperature (°C)
Continued on the following page.
83
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