PRF18BA471QB5RB Datasheet, PDF (84/104 Pages) Murata Manufacturing Co., Ltd. – POSISTOR for Circuit Protection

!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 specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
POSISTORr for Circuit Protection
Overheat Sensing Lead Type
R90E.pdf
Sep.24,2012
PTFM Series 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 Series is
suitable for use as an air temperature sensor.
c Features
1. PTFM Series is a screw-fixing type and PTFL Series is a
lead type, providing ease of mounting.
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 Series and PTFL Series have the same
temperature characteristic, providing a selection
depending on the mounting method.
5.0 max.
4.0 max.
PTFL Series
3.5±1.5
7.5±0.4
3.7±0.3
ø0.5±0.05
(in mm)
3.0±0.3
t0.5±0.05
3.5±1.5
PTFM Series
ø0.5±0.05
in mm
14
Part Number
Max. Voltage
(V)
Sensing Temp. (TS)
(°C)
PTFp4BH471Q2N34B0
16
60
PTFp4BG471Q2N34B0
16
70
PTFp4BF471Q2N34B0
16
80
PTFp4BE471Q2N34B0
16
90
PTFp4BD471Q2N34B0
16
100
PTFp4BC471Q2N34B0
16
110
PTFp4BB471Q2N34B0
16
120
PTFp4BH222Q2N34B0
16
60
PTFp4BG222Q2N34B0
16
70
PTFp4BF222Q2N34B0
16
80
PTFp4BE222Q2N34B0
16
90
PTFp4BD222Q2N34B0
16
100
PTFp4BC222Q2N34B0
16
110
PTFp4BB222Q2N34B0
16
120
A blank is filled with type codes. (L: Lead type, M: with Lug-terminal)
Operating temperature range is -10 to TS+10°C.
Please contact us for UL recognized products.
Resistance Value
at 25°C (max.)
(ohm)
100
100
100
100
100
100
100
330
330
330
330
330
330
330
Resistance Value
(TS-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
(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
82