UMW3157

@@ -0,0 +1,45 @@+# UMW3157++**UMW** · Analog Switches, Multiplexers · SC-70-6++UMW3157 from UMW, 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 | B1 | bidirectional | Analog/digital switch port B1. Connected to common port A when Select = H. Signal range 0 V to VCC; on-resistance typ. 5 Ω at VCC=4.5 V. |+| 2 | GND | power_in | Ground reference (0 V) for the device. |+| 3 | B0 | bidirectional | Analog/digital switch port B0. Connected to common port A when Select = L. Signal range 0 V to VCC; on-resistance typ. 5 Ω at VCC=4.5 V. |+| 4 | A | bidirectional | Common analog/digital switch port A. Routed to B0 (Select=L) or B1 (Select=H). Bidirectional, signal range 0 V to VCC. |+| 5 | VCC | power_in | Positive supply voltage. Operating range 1.65 V to 5.5 V; absolute max 7.0 V. Bypass close to the pin. |+| 6 | Select | input | Digital select input controlling which B port is connected to A: L → B0-A, H → B1-A. Overvoltage-tolerant up to 7 V (may exceed VCC). Must be driven high or low; must not float. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UMW |+| Package | SC-70-6 |+| Category | Interface |+| Pins | 6 |++## Ordering variants++- `UMW31573157DCKR`++## CAD (KiCad official)++- Symbol: `UMW3157`+- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`+- 3D model: SC-70-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UMW datasheet](docs/umw3157-datasheet.pdf) (9 pp, sha256 `bd8ed4cd0a78b39a`, 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/umw3157-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "umw3157",+  "version": "0.1.0",+  "type": "component",+  "description": "UMW Analog Switches, Multiplexers, SC-70-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "interface",+    "umw3157"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "umw3157.kicad_sym",+    "umw3157.kicad_mod",+    "umw3157.glb",+    "umw3157.step",+    "umw3157.lbr",+    "docs/hero.png",+    "docs/umw3157-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file