Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
• 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 specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
!Note
Note
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.
3.5±1.5
ø0.5±0.05
PTFL Series
■ Features
(in mm)
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
7.5±0.4
3.7±0.3
3.0±0.3
t0.5±0.05
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.
3.5±1.5
ø0.5±0.05
PTFM Series
6. PTFM type and PTFL type have the same temperature
characteristic, providing a selection depending on
the mounting method.
in mm
Sensing
Resistance
Value (at 25°C)
(max.) (ohm)
Resistance Value
Resistance Value
Max. VoltageCurie Point
Part Number
Temp. (TS)
(at Sensing Temp. -10°C) (atSensing Temp. TS°C)
(V)
(°C)
(°C)
(max.) (ohm)
(min.) (ohm)
PTFp04BH471Q2N34B0
PTFp04BG471Q2N34B0
PTFp04BF471Q2N34B0
PTFp04BE471Q2N34B0
PTFp04BD471Q2N34B0
PTFp04BC471Q2N34B0
PTFp04BB471Q2N34B0
PTFp04BH222Q2N34B0
PTFp04BG222Q2N34B0
PTFp04BF222Q2N34B0
PTFp04BE222Q2N34B0
PTFp04BD222Q2N34B0
PTFp04BC222Q2N34B0
PTFp04BB222Q2N34B0
16
16
16
16
16
16
16
16
16
16
16
16
16
16
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)
60
70
100
100
100
100
100
100
100
330
330
330
330
330
330
330
330
470
330
330
330
330
330
330
1.5k
1.5k
1.5k
1.5k
1.5k
1.5k
1.5k
470
470
470
470
470
470
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
2.2k
80
90
100
110
120
60
12
70
80
90
100
110
120
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.