CAT.8100Q-1
POSITIVE THERMISTORS "Posi-R"
For Thermal Protection
This series of Posi-R as a temperature indicator is small in size and little
in calorific capacity. It is so useful for indicating any overheating of power
transistors and thyristors in the power sources.
8.1
0.8
φ4.2
6.0MAX.
4.5MAX.
φ0.6
φ0.6 5.0 1.5
18
5.0 1.5
10k
1k
500
100
30
10 50 100 150
OR
OT
OX
IA
IC
IE
IG
Resistance (Ω)
Temperature (˚C)
Fig. 12 Resistance vs.Temperature Characteristics
ZPP35 Type ZPP22 Type
ZPP350R500E ZPP220R501E 70
ZPP350T500E ZPP220T501E 80
ZPP350X500E ZPP220X501E 90
ZPP351A500E ZPP221A501E 100Ω100 500Ω500Ω
16VDC 100mA
ZPP351C500E ZPP221C501E or less 110 or less or more
ZPP351E500E ZPP221E501E 120
ZPP351G500E ZPP221G501E 130
The current flowed in a Posi-R shall be within the range lest it should generate heat.
Resistance at trip temperature (Tr) is available up to 3kΩ, upon request.
Type No.
ZPP35 Type ZPP22 Type 25˚C Tr(˚C) Tr–5˚C Tr+5˚C
Temperature Indication
Max. Operating
Voltage
Max. Inrush
Current
