This document introduces the features and characteristics of Murata's PTC - NTC, including the types, characteristics and applications of PTC - NTC
The document is a product catalog released by Murata Manufacturing that lists the typical specifications of its surface‑mount thermistor families. It covers the PRF15/18 and PRF18 PTC chip series, the PRG18/21 over‑current protection series, and the NCP NTC series, with data on dimensions, electrode construction, resistance values, sensing temperatures and operating ranges.
All data are typical values only; the catalog notes that specifications may change and that final product verification should be done with sales representatives. UL‑recognised parts are highlighted, and ordering notes stress the need for approval sheets before purchase. This manual is written in Chinese.
| PRF15BC471QB1RC Sensing Temperature (at 4.7kΩ) | 105 °C |
|---|---|
| PRF15BC471QB1RC Maximum Voltage | 32 V |
| PRF15BC471QB1RC Operating Temperature Range | -20 °C to 120 °C |
| PRG18BB471MB1RB Maximum Voltage | 24 V |
The POSISTOR is noise‑free, has no contact problems, and is low‑priced.
The PRF15 series is offered in 0402 and 0603 surface‑mount packages.
Yes, the catalog notes that the products are UL‑recognised.
Yes, multiple POSISTOR chips can be connected in series with a comparator to monitor several hot spots.