POSISTOR. PTWTAxxxx Datasheet

PTWTAxxxx POSISTOR. Datasheet pdf. Equivalent

Part PTWTAxxxx
Description POSISTOR
Feature Please read CAUTION and Notice in this catalog for safety. This catalog has only typical specificati.
Manufacture Murata Manufacturing
Total Page 7 Pages
Datasheet
Download PTWTAxxxx Datasheet



PTWTAxxxx
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



PTWTAxxxx
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.
1 s Terminal Connection
PTWSB Series
A
R19E3.pdf 01.10.26
POSISTORr
B
s Power Consumption vs Radiative Plate
PTWSB Series
Relation between power consumption and radiative plate
Wo : Power of POSISTORr Unit
4 W : Power when POSISTORrs are
installead on radiative plate
Radiative plate : Aluminum plate 1mm thickness
3
2
1
0
100 200
Surface Area of Radiative Plate [cm2]
s Output Power vs Ambient Temperature
PTWSB Series
Relation between output power and ambient temperature
Wo : Power at 25˚C
W : Power at each different ambient temperature
1.2
1.1
1.0
0.9
0.8
0 10 20 30
Ambient Temperature [˚C]
40
300
50
s Area of Radiation Plate and Temp. Deviation
PTWTA Series
L
A
AC220Vrms Applied
Radiation Plate : Aluminum of
3mm Thickness
290
25cm2 Area of Radiation Plate (H x L)
Ta=25˚C
50cm2
In Static Air
200
100cm2
150 200cm2
300cm2
100 400cm2
0123456789
Distance from Center portion [cm]
2
PTWTA Series
4
Wo : Power of POSISTORr Only
W : Power of POSISTORr Mounted
onto Radiation Plate
Radiation Plate : Aluminum Plate with 3mm Thickness
3
AC220Vrms
AC120Vrms
2
1
Ta=25˚C In Static Air
0 100 200 300 400
Area of Radiation Plate [cm2]
s Radiation Plate vs Steady State Temperature
PTWTA Series
AC220Vrms Applied
Radiation Plate : Aluminum Plate with 3mm Thickness
250˚C
Area of Radiation Plate (H x L)
25cm2
250
220˚C
50cm2
200 194˚C 170˚C 100cm2
200cm2
150
300cm2
154˚C
142˚C
100 400cm2
Temp. Measuring Point
50
Ta=25˚C
In Static Air
0 5 10 15 20 25
Time [min]





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