Please read rating and
!CAUTION
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!Note
•Please read rating and
!CAUTION
(for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
•This catalog has only typical specifications. Therefore,thereareno space for detailed specifications. Therefore, please approve our productsheet for product specifications before ordering. product specifications before ordering.
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R90E6.pdf 04.3.1
POSISTORr for Circuit Protection
for Overheat Sensing Lead Type
5.0 max.
4.0 max.
PTFM type has been developed for protecting power
transistors, stereo main amplifiers, etc. from
overheating, and also for sensing the temperature of
other components which may be overheated.
The "POSISTOR" offers an excellent temperature sensing
ability, exhibiting a steep change in electrical
resistivity near the temperature setting. PTFL type is
suitable for use as an air temperature sensor.
PTFL Series
3.0 max.
3.5±1.5
25 min.
ø0.5±0.05
s
Features
1. PTFM type is a screw-fixing type and PTFL type is a
lead type, therefore mounting is easy.
2. Compact and light design as well as excellent
thermal response
3. Solid-state construction withstands mechanical
vibration and impact sufficiently
4. Contactless operation provides a prolonged service
life, yet permits noiseless operation.
5. The operating point of "POSISTOR" is set on the
steepest point along the resistance-temperature
characteristic curve, thus performing the overheat
protective operation securely.
6. PTFM type and PTFL type have the same temperature
characteristic, providing a selection depending on
the mounting method.
Max. Voltage
(V)
16
16
16
16
16
16
16
16
16
16
16
16
16
16
Curie Point
(°C)
40 (BH)
50 (BG)
60 (BF)
70 (BE)
80 (BD)
90 (BC)
100 (BB)
40 (BH)
50 (BG)
60 (BF)
70 (BE)
80 (BD)
90 (BC)
100 (BB)
Sensing
Temp. (TS)
(°C)
60
70
80
90
100
110
120
60
70
80
90
100
110
120
(in mm)
7.5±0.4
3.7±0.3
3.0±0.3
t0.5±0.05
13.2±0.5
3.5±1.5
39±5
PTFM Series
ø0.5±0.05
2.5max.
in mm
Part Number
PTFp04BH471Q2N34B0
PTFp04BG471Q2N34B0
PTFp04BF471Q2N34B0
PTFp04BE471Q2N34B0
PTFp04BD471Q2N34B0
PTFp04BC471Q2N34B0
PTFp04BB471Q2N34B0
PTFp04BH222Q2N34B0
PTFp04BG222Q2N34B0
PTFp04BF222Q2N34B0
PTFp04BE222Q2N34B0
PTFp04BD222Q2N34B0
PTFp04BC222Q2N34B0
PTFp04BB222Q2N34B0
Resistance
Value (at 25°C)
(max.) (ohm)
100
100
100
100
100
100
100
330
330
330
330
330
330
330
Resistance Value
(at Sensing Temp. -10°C)
(max.) (ohm)
330
330
330
330
330
330
330
1.5k
1.5k
1.5k
1.5k
1.5k
1.5k
1.5k
Resistance Value
(at Sensing Temp. TS°C)
(min.) (ohm)
470
470
470
470
470
470
470
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
12
A blank is filled with type codes. (L: Lead type, M: with Lug-terminal)
The order quantity should be an integral multiple of the "Minimum Quantity" shown in the "Package" page.
71
MURATA [ MURATA MANUFACTURING CO., LTD. ]
