PRF21BD471QB5RA Overview

A 0805 (2012 Metric) package is used to protect the PTC thermistors from damage. In order to provide safety protection, these PTC thermistors are packaged in the Tape & Reel (TR). A PTC thermistor has a termination of 2. This thermistor has a total of 2 pins. When it works, this thermistor can supply 32V voltage. For the current designed for PTC thermistors, 100μA has been selected. It is recommended that the voltage supplied by this thermistor in the DC circuit should not exceed 32V.

PRF21BD471QB5RA Features

Moisture Sensitivity Level (MSL): 1 (Unlimited)
Package / Case: 0805 (2012 Metric)
Mount: PCB, Surface Mount
Resistance @ 25°C: 470Ohm
Terminal Shape: WRAPAROUND
2 Pins
Series: POSISTOR® PRF18/21
Operating Temperature: -20°C~110°C
Tolerance: 50%

PRF21BD471QB5RA Applications

There are a lot of Murata Electronics
PRF21BD471QB5RA PTC Thermistors applications.

• Thermal compensation
• Display backlights
• Building automation
• Thermal threshold detection
• Motor control
• Chargers
• Thermal protection of winding in electric motors
• Secondary protection of battery packs
• Limit temperature monitoring
• Over-temperature protection of power components