# ASMD1206-035-30V

**Shenzhen JDT Fuse** · Resettable Fuses · 1206

ASMD1206-035-30V from Shenzhen JDT Fuse, in a 1206. 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 | One terminal pad of the non-polarized resettable PTC fuse (Vmax 30 V dc, Ihold 0.35 A, Itrip 0.75 A at 25°C, Imax 100 A); pads are tin-plated nickel-copper and interchangeable with pin 2. |
| 2 | 2 | passive | Second terminal pad of the non-polarized resettable PTC fuse (Vmax 30 V dc, Ihold 0.35 A, Itrip 0.75 A at 25°C, Imax 100 A); pads are tin-plated nickel-copper and interchangeable with pin 1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JDT Fuse |
| Package | 1206 |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum operating voltage | Vmax |  |  | 30 | V dc | At rated current (Imax) | 3 |
| Maximum fault current | Imax |  |  | 100 | A | At rated voltage (Vmax) | 3 |
| Trip current | I trip | 0.75 |  |  | A | 25°C still air | 3 |
| Hold current | I hold |  | 0.35 |  | A | 25°C still air | 3 |
| Power dissipation in tripped state | Pd |  | 0.6 |  | W | Tripped state, 25°C still air, at rated voltage | 3 |
| Minimum resistance prior to tripping | Ri min | 0.25 |  |  | Ω | 25°C | 3 |
| Maximum resistance one hour post reflow | R1max |  |  | 1.5 | Ω | Measured one hour post reflow | 3 |
| Resistance change, passive aging |  | -5 |  | 5 | % | +85°C, 1000 hrs; typical | 4 |
| Resistance change, humidity aging |  | -5 |  | 5 | % | +85°C, 85% R.H., 168 hours; typical | 4 |
| Resistance change, thermal shock |  | -33 |  | 33 | % | +85°C to -40°C, 20 times; typical | 4 |
| Ambient operating temperature |  | -40 |  | 85 | °C | Ambient operating conditions | 4 |
| Maximum surface temperature in tripped state |  |  |  | 125 | °C | Device in tripped state | 4 |
| Storage temperature |  |  |  | 40 | °C | Storage, 70% R.H. max | 8 |
| Peak reflow temperature | Tp |  |  | 260 | ℃ | Pb-free reflow profile | 6 |

## 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 | tin | Terminal pad materials：Tin-plated Nickel-Copper | 7 |

## CAD (KiCad official)

- Symbol: `ASMD1206-035-30V`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `asmd1206-035-30v-etched.step` / `asmd1206-035-30v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `asmd1206-035-30v.step` / `asmd1206-035-30v.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen JDT Fuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590227445031858176) (9 pp, sha256 `1a5ac6045f94969b`, retrieved 2026-10-19, 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/asmd1206-035-30v-datasheet.pdf)