# KH-2012-HM1

**Shenzhen Kinghelm Elec** · Antennas · 0805

KH-2012-HM1 from Shenzhen Kinghelm Elec, in a 0805. 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 | INPUT | passive | RF feed terminal. Connect through the recommended matching network (1.5 pF series, 0 ohm inductor, 0.7 pF shunt on the evaluation board) to a 50 Ohm transmission line driving the 2400-2500 MHz Bluetooth/Wi-Fi radio. Central frequency 2450 MHz, VSWR <= 2.0. |
| 2 | NC | passive | No electrical connection. This terminal is a mechanical/solder anchor pad only; it should be left floating or tied to a non-signal pad per the PCB layout guide. Do not connect to ground or RF trace. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen Kinghelm Elec |
| Package | 0805 |
| Category | RF And Wireless |
| Pins | 2 |

## Ordering variants

Same part, different packaging or reel option.

- `KH-2012-HM1`

## CAD (KiCad official)

- Symbol: `KH-2012-HM1`
- Footprint: `Resistor_SMD:R_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `kh-2012-hm1-etched.step` / `kh-2012-hm1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kh-2012-hm1.step` / `kh-2012-hm1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen Kinghelm Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590902738518175744) (8 pp, sha256 `9d6d93cb23cfdf8e`, 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/kh-2012-hm1-datasheet.pdf)