component
ERTJ1VA400H
Public Made by Adomby adom
PANASONIC 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
markdownERTJ1VA400H
PANASONIC · NTC Thermistors · 0603
ERTJ1VA400H from PANASONIC, 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 | PANASONIC |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal resistance R25 (ERTJ1VA400, 0603) | R25 | 40 | Ω | At 25 °C; part listed as ERTJ1VA400□ (0603), tolerance code H | 8 | ||
| Resistance tolerance (code H) | R25 | -3 | 3 | % | Tolerance code H = ±3 % (standard type) | 8 | |
| B value at 25/50 | B25/50 | 2800 | K | Nominal B25/50 of ERTJ1VA400□ as printed (2800 K ±3 %) | 8 | ||
| B value tolerance at 25/50 | B25/50 | -3 | 3 | % | ±3 % as printed for B25/50 = 2800 K | 8 | |
| B value at 25/85 (reference) | B25/85 | 2750 | K | Reference value printed in parentheses; no tolerance printed | 8 | ||
| Rated maximum power dissipation (0603) | P | 100 | mW | Rated at ambient 25 °C or less; above 25 °C derate per decreased power dissipation curve | 6 | ||
| Dissipation factor (0603) | 3 | mW/°C | Approximately; reference value on glass epoxy board (1.6 mmT) | 6 | |||
| Operating temperature range | -40 | 125 | °C | Standard type ratings | 6 | ||
| Storage temperature (components before mounting) | 5 | 40 | °C | Storage at 20 to 70 % RH; not under severe high temperature/humidity | 16 | ||
| Zero-power measurement power for R25 | 0.1 | mW | Self-heating negligible; measured at 25.0 ±0.1 °C | 10 | |||
| R25 change after resistance to soldering heat | R25 | -3 | 3 | % | Standard type; solder 270 ±5 °C, dipping 4.0 ±1 s | 10 | |
| B value change after resistance to soldering heat | B | -2 | 2 | % | Standard type; solder 270 ±5 °C, dipping 4.0 ±1 s | 10 | |
| R25 change after bending strength | R25 | -5 | 5 | % | Bending distance 1 mm, bending speed 1 mm/s | 10 | |
| R25 change after temperature cycling | R25 | -3 | 3 | % | Standard type; -40 to 125 °C, 100 cycles | 11 | |
| B value change after temperature cycling | B | -2 | 2 | % | Standard type; -40 to 125 °C, 100 cycles | 11 | |
| R25 change after humidity | R25 | -3 | 3 | % | Standard type; 85 ±2 °C, 85 ±5 % RH, 1000 h | 11 | |
| B value change after humidity | B | -2 | 2 | % | Standard type; 85 ±2 °C, 85 ±5 % RH, 1000 h | 11 | |
| R25 change after biased humidity | R25 | -3 | 3 | % | Standard type; 85 ±2 °C, 85 ±5 % RH, 10 mW DC, 500 h | 11 | |
| B value change after biased humidity | B | -2 | 2 | % | Standard type; 85 ±2 °C, 85 ±5 % RH, 10 mW DC, 500 h | 11 | |
| R25 change after low temperature exposure | R25 | -3 | 3 | % | Standard type; -40 ±3 °C, 1000 h | 11 | |
| B value change after low temperature exposure | B | -2 | 2 | % | Standard type; -40 ±3 °C, 1000 h | 11 | |
| R25 change after high temperature exposure | R25 | -3 | 3 | % | Standard type; 125 ±3 °C, 1000 h | 11 | |
| B value change after high temperature exposure | B | -2 | 2 | % | Standard type; 125 ±3 °C, 1000 h | 11 |
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 |
|---|---|---|---|---|
| housing | PC | residue on the surface of PC boards may deteriorate the insulation resistance on the Thermistors’ surface. | 17 |
CAD (KiCad official)
- Symbol:
ERTJ1VA400H - Footprint:
Resistor_SMD:R_0603_1608Metric - 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files:
ertj1va400h-etched.step/ertj1va400h-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ertj1va400h.step/ertj1va400h.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PANASONIC datasheet (59 pp, sha256
8322c7184f198ccf, retrieved 2026-10-18, 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).