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PDF PTWTAxxxx Data sheet ( Hoja de datos )
| Número de pieza | PTWTAxxxx | |
| Descripción | POSISTOR | |
| Fabricantes | Murata Manufacturing | |
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Please read CAUTION and Notice in this catalog for safety. This catalog has only typical specifications. Therefore you are requested
to approve our product specification or to transact the approval sheet for product specification, before your ordering.
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POSISTORr for Heater
POSISOTRr for Constant Temperature Heating
R19E3.pdf 01.10.26
1
These "POSISTOR" are designed for various applications
for constant temperature heating purpose.
Wide range of temperature characteristic shall make
easier to select most suited heater device matching to
the application.
s Features
1. The heater element itself regulate designated
temperature range.
(Temperature can change depending on how to use it)
2. The temperature pulsation which is observed in case
on-off temperature control system can be eliminated.
3. Out put wattage is decreased automatically when
heat radiation is decreased.
(Over heating is very small compared to constant
wattage heater)
4. Compact and flat surface shall realize easy to
install for various set.
(PTWTA series has electrically insulated heating
surface)
5. Depending on application, these PTC realize dual
voltage use.
(Out put wattage do not change much between 100V
through 260V)
2-ø4.3
PTWSB Series
29.5±0.5
37±0.7
3 6.5 3
A
B6
11
in mm
PTWTA Series
13
30±0.5
40±0.5
ø5max. ø5max.
5.3 5.4
1.5
in mm
s Applications
•Heated vessels (electronic jars, tea pots, etc.)
•Contact lens cleaner •Portable travel iron
•Massager
•Fragrance
•Electric pot
Part Number
Curie Point
(°C)
Rated Volt.
Max. Volt.
Inrush Current
Steady State Current Steady State Current
(at 120Vrms)
(at 220Vrms)
(Vrms)
(A)
(mA)
(mA)
PTWSB1BC201T260A00 90 (BC) 120/220Vrms. 260
5.0 max.
28 ±20%
17 ±20%
PTWSB1AS201T260A00 135 (AS) 120/220Vrms. 260
5.0 max.
33 ±20%
21 ±20%
PTWSB2AH201T260A00 205 (AH) 120/220Vrms. 260
5.0 max.
58 ±20%
35 ±20%
PTWSB2AG201T260A00 225 (AG) 120/220Vrms. 260
5.0 max.
65 ±20%
39 ±20%
PTWTA1AD201T260A00 280 (AD) 120/220Vrms. 260
10.0 max.
-
75 ±30%
Surface Temp.
(Nominal Value)
(°C)
105
130
185
200
285
Inrush current based on 220Vrms.
Operating temperature range PTWSB1/PTWTA: 0 to +60(°C), PTWSB2: 0 to +85(°C)
Cat.No.R19E-31
1 page  
Please read CAUTION and Notice in this catalog for safety. This catalog has only typical specifications. Therefore you are requested
to approve our product specification or to transact the approval sheet for product specification, before your ordering.
R19E3.pdf 01.10.26
Standard Type POSISTORr Notice 1
s Notice(Soldering and Mounting)
PTWSB Series
1. Design aseembling position of "POSISTOR" with
considering heatproof.
2. Make the heat resistance as small as possible,
between the "POSISTOR" and the place it is
connected. Do not use an insulating sheet which is
poor in heat transmission. Install the "POSISTOR"
in the flat surface to maximize the function.
Application of heat resisting grease
(e.g.siliconegrease), into interfaces of "POSISTOR"
substrate - insulator - material to be heated,
will permit effective heat transmission.
3. When more than one "POSISTOR" are used, be sure to
s Notice(Soldering and Mounting)
PTWTA Series
1. Heat resistance of the mounting part must be
considered in designing.
2. Four mounting holes 1.0 to 1.5 mm in depth and 5 to
5.5 mm in diameter are required on the heated part
contacting "POSISTOR".
3. Apply power with "POSISTOR" mounted into the part
heated. If power is applied to "POSISTOR" alone,
the alumina case may be broken.
4. When more than one "POSISTOR" are used, be sure to
s Notice(Rating)
Do not apply voltage the maximum voltage.
Because their characteristics might be worse and PTC
element may be destroyed.
connect them in parallel. If "POSISTOR" are
connected in series, they don't operate normally.
4. When lead wires are connected to "POSISTOR", use
rosin type flux which includes less than 0.2wt% of
chlorine. Also pay attention to connecting method
in order to prevent "POSISTOR" from invasion of
flux, and to heatproof of connecting materials
(ex:solder etc).
5. This product generates heat at operation, and
direct touch to the surface can hart human finger
or skin. Pay attention at the installation to
prevent direct touch from outside.
connect them in parallel. If "POSISTOR" are
connected in series, they don't operate normally.
5. When lead wires are connected to "POSISTOR", spot
welding method should be adopted. Recommendable
material of lead wires is Nickel.
6. This product generates heat at operation, and
direct touch to the surface can hart human finger
or skin. Pay attention at the installation to
prevent direct touch from outside.
5
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