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SMD1210P035TF
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RUILON Shenzhen Ruilongyuan Elec Resettable Fuses, 1210. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMD1210P035TF
RUILON Shenzhen Ruilongyuan Elec · Resettable Fuses · 1210
SMD1210P035TF from RUILON Shenzhen Ruilongyuan Elec, in a 1210. 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 | Non-polarized terminal of the PTC resettable fuse (Ihold 0.35 A, Itrip 0.75 A, Vmax 6 VDC, Imax 8.00 A), interchangeable with the other terminal. |
| 2 | 2 | passive | Non-polarized terminal of the PTC resettable fuse (Ihold 0.35 A, Itrip 0.75 A, Vmax 6 VDC, Imax 8.00 A), interchangeable with the other terminal. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RUILON Shenzhen Ruilongyuan Elec |
| Package | 1210 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Hold current (max current that does not trip, 25°C still air) | Ihold | 0.35 | A | 25°C still air; maximum current device will not trip | 2 | ||
| Trip current (min current that always trips, 25°C still air) | Itrip | 0.75 | A | 25°C still air; minimum current at which device always trips | 2 | ||
| Maximum operating voltage | Vmax | 6 | VDC | At rated current (Imax) | 2 | ||
| Maximum fault current | Imax | 30 | A | At rated voltage (Vmax) | 2 | ||
| Power dissipation in tripped state | Pd | 0.6 | W | Tripped state, 25°C still air, at rated voltage | 2 | ||
| Minimum resistance prior to tripping | Ri min | 0.2 | Ω | Prior to tripping, 25°C | 2 | ||
| Maximum resistance one hour post reflow | R1max | 1.3 | Ω | One hour post reflow | 2 | ||
| Maximum time to trip | 0.2 | s | At 8.00 A | 2 | |||
| Ambient operating temperature | -40 | 85 | °C | Ambient operating conditions | 1 | ||
| Maximum surface temperature in tripped state | 125 | °C | Device in tripped state | 1 | |||
| Resistance change, passive aging | -5 | 5 | % | +85°C, 1000 hrs; typical | 1 | ||
| Resistance change, humidity aging | -5 | 5 | % | +85°C, 85%R.H., 168 hours; typical | 1 | ||
| Resistance change, thermal shock | -33 | 33 | % | +85°C to -40°C, 20 times; typical | 1 | ||
| Preheat temperature Ts(min) | Ts(min) | 150 | °C | Pb-free reflow | 4 | ||
| Preheat temperature Ts(max) | Ts(max) | 200 | °C | Pb-free reflow | 4 | ||
| Preheat time (Ts min to max) | ts | 60 | 180 | s | Pb-free reflow | 4 | |
| Average ramp-up rate TL to peak | 3 | °C/s | Pb-free reflow | 4 | |||
| Ramp-up rate TS(max) to TL | 3 | °C/s | Pb-free reflow | 4 | |||
| Liquidus temperature | TL | 217 | °C | Pb-free reflow | 4 | ||
| Time above liquidus | tL | 60 | 150 | s | Pb-free reflow | 4 | |
| Peak temperature | TP | 260 | °C | Peak 260 +0/-5°C; do not exceed 260°C | 4 | ||
| Time within 5°C of peak temperature | tp | 20 | 40 | s | Pb-free reflow | 4 | |
| Ramp-down rate | 6 | °C/s | Pb-free reflow | 4 | |||
| Time from 25°C to peak temperature | 8 | min | Pb-free reflow | 4 | |||
| Derated hold current at ambient -40 °C | Ih | 0.47 | A | Ambient -40 °C | 3 | ||
| Derated hold current at ambient -20 °C | Ih | 0.45 | A | Ambient -20 °C | 3 | ||
| Derated hold current at ambient 0 °C | Ih | 0.4 | A | Ambient 0 °C | 3 | ||
| Derated hold current at ambient 25 °C | Ih | 0.35 | A | Ambient 25 °C | 3 | ||
| Derated hold current at ambient 40 °C | Ih | 0.33 | A | Ambient 40 °C | 3 | ||
| Derated hold current at ambient 50 °C | Ih | 0.28 | A | Ambient 50 °C | 3 | ||
| Derated hold current at ambient 60 °C | Ih | 0.24 | A | Ambient 60 °C | 3 | ||
| Derated hold current at ambient 70 °C | Ih | 0.21 | A | Ambient 70 °C | 3 | ||
| Derated hold current at ambient 85 °C | Ih | 0.18 | A | Ambient 85 °C | 3 |
CAD (KiCad official)
- Symbol:
SMD1210P035TF - Footprint:
Fuse:Fuse_1210_3225Metric - 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files:
smd1210p035tf-etched.step/smd1210p035tf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smd1210p035tf.step/smd1210p035tf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: RUILON Shenzhen Ruilongyuan Elec datasheet (7 pp, sha256
1b912bbc16f34b5c, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(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).
# SMD1210P035TF
**RUILON Shenzhen Ruilongyuan Elec** · Resettable Fuses · 1210
SMD1210P035TF from RUILON Shenzhen Ruilongyuan Elec, in a 1210. 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 | Non-polarized terminal of the PTC resettable fuse (Ihold 0.35 A, Itrip 0.75 A, Vmax 6 VDC, Imax 8.00 A), interchangeable with the other terminal. |
| 2 | 2 | passive | Non-polarized terminal of the PTC resettable fuse (Ihold 0.35 A, Itrip 0.75 A, Vmax 6 VDC, Imax 8.00 A), interchangeable with the other terminal. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | RUILON Shenzhen Ruilongyuan Elec |
| Package | 1210 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Hold current (max current that does not trip, 25°C still air) | Ihold | | | 0.35 | A | 25°C still air; maximum current device will not trip | 2 |
| Trip current (min current that always trips, 25°C still air) | Itrip | 0.75 | | | A | 25°C still air; minimum current at which device always trips | 2 |
| Maximum operating voltage | Vmax | | | 6 | VDC | At rated current (Imax) | 2 |
| Maximum fault current | Imax | | | 30 | A | At rated voltage (Vmax) | 2 |
| Power dissipation in tripped state | Pd | | 0.6 | | W | Tripped state, 25°C still air, at rated voltage | 2 |
| Minimum resistance prior to tripping | Ri min | 0.2 | | | Ω | Prior to tripping, 25°C | 2 |
| Maximum resistance one hour post reflow | R1max | | | 1.3 | Ω | One hour post reflow | 2 |
| Maximum time to trip | | | | 0.2 | s | At 8.00 A | 2 |
| Ambient operating temperature | | -40 | | 85 | °C | Ambient operating conditions | 1 |
| Maximum surface temperature in tripped state | | | | 125 | °C | Device in tripped state | 1 |
| Resistance change, passive aging | | -5 | | 5 | % | +85°C, 1000 hrs; typical | 1 |
| Resistance change, humidity aging | | -5 | | 5 | % | +85°C, 85%R.H., 168 hours; typical | 1 |
| Resistance change, thermal shock | | -33 | | 33 | % | +85°C to -40°C, 20 times; typical | 1 |
| Preheat temperature Ts(min) | Ts(min) | 150 | | | °C | Pb-free reflow | 4 |
| Preheat temperature Ts(max) | Ts(max) | | | 200 | °C | Pb-free reflow | 4 |
| Preheat time (Ts min to max) | ts | 60 | | 180 | s | Pb-free reflow | 4 |
| Average ramp-up rate TL to peak | | | | 3 | °C/s | Pb-free reflow | 4 |
| Ramp-up rate TS(max) to TL | | | | 3 | °C/s | Pb-free reflow | 4 |
| Liquidus temperature | TL | | 217 | | °C | Pb-free reflow | 4 |
| Time above liquidus | tL | 60 | | 150 | s | Pb-free reflow | 4 |
| Peak temperature | TP | | | 260 | °C | Peak 260 +0/-5°C; do not exceed 260°C | 4 |
| Time within 5°C of peak temperature | tp | 20 | | 40 | s | Pb-free reflow | 4 |
| Ramp-down rate | | | | 6 | °C/s | Pb-free reflow | 4 |
| Time from 25°C to peak temperature | | | | 8 | min | Pb-free reflow | 4 |
| Derated hold current at ambient -40 °C | Ih | | 0.47 | | A | Ambient -40 °C | 3 |
| Derated hold current at ambient -20 °C | Ih | | 0.45 | | A | Ambient -20 °C | 3 |
| Derated hold current at ambient 0 °C | Ih | | 0.4 | | A | Ambient 0 °C | 3 |
| Derated hold current at ambient 25 °C | Ih | | 0.35 | | A | Ambient 25 °C | 3 |
| Derated hold current at ambient 40 °C | Ih | | 0.33 | | A | Ambient 40 °C | 3 |
| Derated hold current at ambient 50 °C | Ih | | 0.28 | | A | Ambient 50 °C | 3 |
| Derated hold current at ambient 60 °C | Ih | | 0.24 | | A | Ambient 60 °C | 3 |
| Derated hold current at ambient 70 °C | Ih | | 0.21 | | A | Ambient 70 °C | 3 |
| Derated hold current at ambient 85 °C | Ih | | 0.18 | | A | Ambient 85 °C | 3 |
## CAD (KiCad official)
- Symbol: `SMD1210P035TF`
- Footprint: `Fuse:Fuse_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `smd1210p035tf-etched.step` / `smd1210p035tf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smd1210p035tf.step` / `smd1210p035tf.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [RUILON Shenzhen Ruilongyuan Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586172563260624896) (7 pp, sha256 `1b912bbc16f34b5c`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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).
[Datasheet PDF](docs/smd1210p035tf-datasheet.pdf)