component
NCP18WB333J03RB
Public Made by Adomby adom
Murata Electronics NTC Thermistors, 0603. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownNCP18WB333J03RB
Murata Electronics · NTC Thermistors · 0603
NCP18WB333J03RB from Murata Electronics, in a 0603. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Murata Electronics |
| Package | 0603 |
| Category | Sensors |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Resistance tolerance (J code) | -5 | 5 | % | Tolerance code J (p = J: ±5%) per part number table | 12 | ||
| B-constant (25-50°C) tolerance | -3 | 3 | % | B-constant 25-50°C | 12 | ||
| Maximum Operating Current (25°C) | 0.055 | mA | 25°C; max current keeps thermistor self-heating to 0.1°C | 12 | |||
| Maximum Voltage | 5 | V | 12 | ||||
| Operating Temperature Range | -40 | 125 | °C | Operating temperature range | 12 | ||
| Storage temperature (recommended) | -10 | 40 | °C | Recommended storage; use within 6 months of delivery | 19 | ||
| Storage humidity (recommended) | 75 | %RH | Recommended storage; not dewing condition | 19 | |||
| Resistance (25°C) | R25 | 33 | kΩ | 25°C, zero-power resistance | 12 | ||
| B-constant (25-50°C) | B25/50 | 4050 | K | 25-50°C | 12 | ||
| B-constant (25-80°C) reference value | B25/80 | 4101 | K | 25-80°C; reference value | 12 | ||
| B-constant (25-85°C) reference value | B25/85 | 4108 | K | 25-85°C; reference value | 12 | ||
| B-constant (25-100°C) reference value | B25/100 | 4131 | K | 25-100°C; reference value | 12 | ||
| Typical Dissipation Constant (25°C) | 1 | mW/°C | 25°C; power needed to raise thermistor temperature 1°C by self-heating | 12 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | ø0.3mm Copper Lead Wire with Polyurethane Coat | 5 |
CAD (KiCad official)
- Symbol:
NCP18WB333J03RB - Footprint:
Resistor_SMD:R_0603_1608Metric - 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files:
ncp18wb333j03rb-etched.step/ncp18wb333j03rb-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ncp18wb333j03rb.step/ncp18wb333j03rb.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Murata Electronics datasheet (37 pp, sha256
65ce16b3b8439eb4, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal convention(convention), consensusoff(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).