# AVR-M1608C220KT2AB

**TDK** · Varistors · 0603

AVR-M1608C220KT2AB from TDK, in a 0603. 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 electrode (Ag/Ni/Sn) of a non-polar varistor, V1mA 22 V (19.8 to 24.2 V), max continuous Vdc 16 V; connect to the protected line. |
| 2 | 2 | passive | Second terminal electrode of the non-polar varistor, interchangeable with the other terminal; typically connected to ground, with clamping voltage 37 V at 2 A (8/20 µs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TDK |
| Package | 0603 |
| 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 V1mA | V1mA | 19.8 | 22 | 24.2 | V | DC 1mA | 10 |
| Capacitance | C | 168 | 210 | 252 | pF | 1kHz/1MHz*, oscillator voltage 1Vrms | 10 |
| Varistor voltage tolerance (code K) | V1mA | -10 |  | 10 | % | Part-number tolerance code K = ±10% | 5 |
| Maximum continuous voltage | Vdc |  |  | 16 | V | DC voltage continuously applied between terminals | 10 |
| Maximum peak current | Ip |  |  | 10 | A | 8/20μs impulse current, applied once | 10 |
| Maximum energy | E |  |  | 0.03 | J | 10/1000μs impulse current, applied once | 10 |
| ESD voltage tolerance |  |  |  | 25 | kV | IEC61000-4-2 | 10 |
| Operating temperature range |  | -40 |  | 125 | °C |  | 10 |

## 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 |  | nickel | Terminal electrode (4) Ni | 3 |

## CAD (KiCad official)

- Symbol: `AVR-M1608C220KT2AB`
- Footprint: `Resistor_SMD:R_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `avr-m1608c220kt2ab-etched.step` / `avr-m1608c220kt2ab-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `avr-m1608c220kt2ab.step` / `avr-m1608c220kt2ab.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/8558282592778027008) (19 pp, sha256 `d4c2107b21fc5d20`, retrieved 2026-10-17, 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/avr-m1608c220kt2ab-datasheet.pdf)