TCTR0805F100KF4310T from RESI, in a 0805. 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	Thermistor terminal 1. Non-polar chip termination (external plating over internal electrode) on one end of the 0805 body. Bulk resistance to pin 2 is 100 kΩ ±1% at 25 °C; resistance follows the NTC characteristic with B25/85 = 4310 K.
2	2	passive	Thermistor terminal 2. Non-polar chip termination on the opposite end of the 0805 body from pin 1. Rated operating power 130 mW, max operating (self-heat) current corresponds to 5 mW derated for measurement; operating temperature range -40 °C to +150 °C (T grade).

Key specifications

Parameter	Value
Manufacturer	RESI
Package	0805
Category	Sensor
Pins	2

Ordering variants

Same part, different packaging or reel option.

TCTR0805F100KF4310T
TCTR0603
TCTR0402

CAD (KiCad official)

Symbol: TCTR0805F100KF4310T
Footprint: Resistor_SMD:R_0805_2012Metric
3D model: 0805 (KiCad packages3D, STEP)

Provenance

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

Datasheet: RESI datasheet (9 pp, sha256 59f3ac30436c02a2, 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