component
103JG1J
Public Made by Adomby adom
Littelfuse NTC Thermistors, DO-35. 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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README
markdown103JG1J
Littelfuse · NTC Thermistors · DO-35
103JG1J from Littelfuse, in a DO-35. 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 | Littelfuse |
| Package | DO-35 |
| 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 | -5 | 5 | % | @ 25°C, MPN suffix J = ±5% | 3 | ||
| Temperature range | -55 | 300 | °C | Temperature Range as printed in table | 3 | ||
| Thermal time constant, max, still air | 5 | s | Max., still air | 3 | |||
| Thermal time constant, max, well stirred oil | 0.5 | s | Max., well stirred oil | 3 | |||
| Resistance at 25°C (nominal) | R | 10000 | Ω | @ 25°C | 3 | ||
| Temperature coefficient | -4.4 | %/°C | @ 25°C | 3 | |||
| Dissipation constant, nominal | 2 | mW/°C | Nominal | 3 |
CAD (KiCad official)
- Symbol:
103JG1J - Footprint:
Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal - 3D model: DO-35 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (5 pp, sha256
fbd1edd1123e4f20, retrieved 2026-10-16, 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).