PRF18AR471QB5RB 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	PTC thermistor terminal 1. Non-polarized SMD end termination; connects to one side of the PTC element (470Ω ±50% at 25°C, max 32V). Interchangeable with terminal 2.
2	2	passive	PTC thermistor terminal 2. Non-polarized SMD end termination; connects to the other side of the PTC element. Interchangeable with terminal 1.

Key specifications

Parameter	Value
Manufacturer	Murata Electronics
Package	0603
Category	Sensor
Pins	2

Ordering variants

Same part, different packaging or reel option.

PRF18AR471QB5RB
PRF18AR471QB5RBPRF21

CAD (KiCad official)

Symbol: PRF18AR471QB5RB
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 7f62dca27d4f03d6, 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