# B72530G1170K062

**TDK** · Varistors · 1210

B72530G1170K062 from TDK, 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 | Terminal 1 | passive | First termination (AgNiSn) of the bidirectional varistor; rated VRMS,max 17 V, VDC,max 22 V, connect in parallel with the circuit to be protected. |
| 2 | Terminal 2 | passive | Second termination (AgNiSn) of the bidirectional varistor; interchangeable with terminal 1, Vclamp,max 44 V at 2.5 A (8/20 µs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TDK |
| 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 |
|---|---|---|---|---|---|---|---|
| Varistor voltage tolerance | ΔVV | -10 |  | 10 | % |  | 7 |
| Maximum AC operating voltage, RMS | VRMS,max |  |  | 17 | V |  | 7 |
| Maximum DC operating voltage | VDC,max |  |  | 22 | V |  | 7 |
| Maximum surge current | Isurge,max |  |  | 400 | A | 8/20 µs | 7 |
| Maximum energy absorption | Wmax |  |  | 1700 | mJ | 2 ms | 7 |
| Maximum load dump energy | WLD |  |  | 3 | J | 10 pulses | 7 |
| Maximum power dissipation | Pdiss,max |  |  | 10 | mW |  | 7 |
| Maximum jump-start voltage | Vjump |  |  | 26.5 | V | 5 min | 7 |
| Maximum clamping voltage | Vclamp,max |  |  | 44 | V |  | 7 |
| Maximum capacitance | Cmax |  |  | 2200 | pF | 1 kHz | 7 |
| Maximum leakage current | Ileak,max |  |  | 50 | µA | @22 V | 7 |
| Operating temperature | Top | -55 |  | 150 | °C |  | 4 |
| Storage temperature | LCT/UCT | -55 |  | 150 | °C |  | 4 |
| Response time | tresp |  |  | 0.5 | ns |  | 4 |
| Varistor voltage | VV |  | 27 |  | V | 1 mA | 7 |

## 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 | ABS |  | applications: battery lines, body control units, ABS/ESP, EPS, DC motors | 3 |
| contacts |  | nickel | RoHS-compatible, lead-free Nickel barrier suitable for lead-free soldering | 3 |

## CAD (KiCad official)

- Symbol: `B72530G1170K062`
- Footprint: `Resistor_SMD:R_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `b72530g1170k062-etched.step` / `b72530g1170k062-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `b72530g1170k062.step` / `b72530g1170k062.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TDK datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588942651928285184) (51 pp, sha256 `683d5f3a74350eb3`, 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/b72530g1170k062-datasheet.pdf)