# B59601A0105A062

**TDK** · PTC Thermistors · 0603

B59601A0105A062 from TDK, in a 0603. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | T1 | passive | PTC thermistor terminal 1 (tinned lead-free termination on EIA 0603 case). Non-polar; either terminal may be used as the input. |
| 2 | T2 | passive | PTC thermistor terminal 2 (tinned lead-free termination on EIA 0603 case). Non-polar; connects in series with the sensed/protected path. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TDK |
| Package | 0603 |
| Category | Sensor |
| Pins | 2 |

## Ordering variants

- `B59601A0105A062`
- `B59601A0105A062B59601A0105B062`
- `B59601A0105A062B59601A0085B062`
- `B59601A0105A062B59601A0095B062`
- `B59601A0105A062B59601A0115B062`
- `B59601A0105A062B59601A0125B062`
- `B59601A0105A062B59603A0055A062`
- `B59601A0105A062B59603A0085A062`
- `B59601A0105A062B59603A0105A062`
- `B59601A0105A062B59602A0055B062`
- `B59601A0105A062B59404A0130A062`
- `B59601A0105A062B59701A0070A062`
- `B59601A0105A062B59701A0090A062`
- `B59601A0105A062B59701A0100A062`
- `B59601A0105A062B59701A0110A062`
- `B59601A0105A062B59701A0120A062`
- `B59601A0105A062B59701A0130A062`
- `B59601A0105A062B59701A0140A062`

## CAD (KiCad official)

- Symbol: `B59601A0105A062`
- Footprint: `Resistor_SMD:R_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `b59601a0105a062-etched.step` / `b59601a0105a062-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `b59601a0105a062.step` / `b59601a0105a062.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`b59601a0105a062.step`](b59601a0105a062.step) | 40 KB | You want the bare part, or you mark your own boards. |
| [`b59601a0105a062-etched.step`](b59601a0105a062-etched.step) | 2.9 MB | You want the part with `B59601A0105A062` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 698 faces against 26 in the bare model. It
survives export, section views, and rendering in any CAD tool, and it drops straight
into KiCad or Fusion with no extra setup.

## Provenance

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

- **Datasheet:** [TDK datasheet](docs/b59601a0105a062-datasheet.pdf) (20 pp, sha256 `3a8c280910a7691d`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/b59601a0105a062-datasheet.pdf)