Part Number

Characteristics

Resistance

(at +25

°C)

Sensing Temp.

(at 4.7k ohm)

Maximum

Voltage

Operating Temp.

PRF15BA471QB1RC

BA

470ohm

±50%

125

±5°C

32VDC

-20 to +140

°C

PRF15BB471QB1RC

PRF15BC471QB1RC

BB

BC

115

±5°C

105

±5°C

-20 to +130

°C

-20 to +120

°C

What is a Thermistor?

PRF15/18 Series Chip POSISTORr for Overheat Sensing

PRF15 Series Characteristics

NTC

PTC

Thermistor

Characteristics of Thermistors

Resistance - Temperature Characteristics

PTC Thermistor

(POSISTORr)

BaTiO

Ceramics

NTC Thermistor

Mn-Ni, Mn-Co-Cu,

Mn-Ni + X

Ceramics

Log

R

T

2xR25

R25

25

Curie

Point

Log

R

T

R25

25

PRF15/18 PTC Chip thermistors detect overheating of

Hybrid ICs, Power Transistors, Power Diodes and

Power ICs etc.

1. 0402 and 0603 light weight

2. High gain simplifies circuit design

3. Free of contact noise and problems

4. Pb free plated terminations.

5. Sturdy construction resists mechanical vibration

and shock.

R1

R2

PRF

Thermal

Contact

Thermal

Contact

+Vcc

GND

Fan Motor

Vref

M

PRF

Comparator

Power IC

Control IC

Example

(in mm)

Dimensions

Electrode

Construction

Cross-sectional

Nickel Barrier

Sn Plating

Ceramic

PTC

0.1-0.4

1.0

±0.05

0.5

±0.05

0.5

±0.05

New

• This PDF catalog is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our

sales representatives or product engineers before ordering.

• This PDF 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

R01E.pdf

06.1.25