PRF18BD471QB5RB from Murata Electronics, in a 0603. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	1	passive	Terminal 1 of the two-terminal PTC thermistor (POSISTOR). Non-polarized; resistance ~470 Ω at 25 °C, rising steeply above the detection temperature. Max operating voltage across terminals: 32 V.
2	2	passive	Terminal 2 of the two-terminal PTC thermistor (POSISTOR). Non-polarized; interchangeable with terminal 1. Lead-free termination.

Key specifications

Parameter	Value
Manufacturer	Murata Electronics
Package	0603
Category	Sensor
Pins	2

Ordering variants

Same part, different packaging or reel option.

PRF18BD471QB5RB
PRF18BD471QB5RBRA

CAD (KiCad official)

Symbol: PRF18BD471QB5RB
Footprint: Resistor_SMD:R_0603_1608Metric
3D model: 0603 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Murata Electronics datasheet (3 pp, sha256 0226e1d31a819143, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF