# SGM4157YC6

**SGMICRO** · Analog Switches, Multiplexers · SC-70-6

SGM4157YC6 from SGMICRO, in a SC-70-6. 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 | NO | bidirectional | Normally-Open analog switch terminal. Connected to COM when IN = logic high. Rail-to-rail analog signal range 0 V to V+. On-resistance 0.8Ω typ, continuous current ±150mA (peak ±250mA). |
| 2 | GND | power_in | Ground reference (0V) for the device. |
| 3 | NC | bidirectional | Normally-Closed analog switch terminal. Connected to COM when IN = logic low. Rail-to-rail analog signal range 0 V to V+. On-resistance 0.8Ω typ, continuous current ±150mA (peak ±250mA). |
| 4 | COM | bidirectional | Common analog switch terminal. Routed to either NO or NC based on the state of the IN control pin. Rail-to-rail signal range 0 V to V+. |
| 5 | V+ | power_in | Positive power supply input. Operating range 1.8V to 5.5V; absolute max 6V. Quiescent supply current 0.1µA typ. |
| 6 | IN | input | Digital control input that selects which switch terminal is connected to COM (IN=0 selects NC, IN=1 selects NO). TTL/CMOS compatible: VIH ≥ 1.6V, VIL ≤ 0.4V at V+=4.5V. Input tolerates drive signals up to 5.5V independent of supply voltage. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SGMICRO |
| Package | SC-70-6 |
| Category | Interface |
| Pins | 6 |

## Ordering variants

Same part, different packaging or reel option.

- `SGM4157YC6/TR`

## CAD (KiCad official)

- Symbol: `SGM4157YC6`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SC-70-6 (KiCad packages3D, STEP)
- 3D model files: `sgm4157yc6-etched.step` / `sgm4157yc6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sgm4157yc6.step` / `sgm4157yc6.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SGMICRO datasheet](docs/sgm4157yc6-datasheet.pdf) (11 pp, sha256 `20b74037b24c2934`, 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/sgm4157yc6-datasheet.pdf)