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WAS3157B-6
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WILLSEMI Will Semicon Analog Switches, Multiplexers, SOT-363. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# WAS3157B-6++**WILLSEMI Will Semicon** · Analog Switches, Multiplexers · SOT-363++WAS3157B-6 from WILLSEMI Will Semicon, in a SOT-363. 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 | B1 | bidirectional | Data 1 terminal (analog switch throw). Normally open; connected to A when SEL is high. Bidirectional analog signal, 0 to VCC operating range; absolute max -0.5V to 6.5V. Continuous current ±50mA. |+| 2 | GND | power_in | Ground reference for the device. |+| 3 | B0 | bidirectional | Data 0 terminal (analog switch throw). Normally closed; connected to A when SEL is low. Bidirectional analog signal, 0 to VCC operating range; absolute max -0.5V to 6.5V. Continuous current ±50mA. |+| 4 | A | bidirectional | Common data terminal (SPDT pole). Connects to B0 or B1 according to SEL logic. Bidirectional analog signal, 0 to VCC operating range; absolute max -0.5V to 6.5V. Continuous current ±50mA. A-port on-capacitance ~18.5pF. |+| 5 | VCC | power_in | Positive supply input. Recommended operating range 2.3V to 5.5V; absolute max -0.5V to 6.5V. Quiescent current <1uA typical. |+| 6 | SEL | input | Digital switch select input. Logic low → B0 connected to A; logic high → B1 connected to A. Overvoltage-tolerant up to 7.0V regardless of VCC. VIH ≥ 1.5V (VCC=3.6~4.5V) or ≥ 1.3V (VCC=2.3~3.6V); VIL ≤ 0.6V or 0.4V respectively. Input capacitance ~5.5pF. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | WILLSEMI Will Semicon |+| Package | SOT-363 |+| Category | Interface |+| Pins | 6 |++## Ordering variants++- `WAS3157B-6/TR`++## CAD (KiCad official)++- Symbol: `WAS3157B-6`+- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`+- 3D model: SOT-363 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [WILLSEMI Will Semicon datasheet](docs/was3157b-6-datasheet.pdf) (7 pp, sha256 `56e6f7d833c78371`, 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/was3157b-6-datasheet.pdf)
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