component

ET3157

Public Made by Adom

by adom

UMW Analog Switches, Multiplexers, SC-70-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentinterfaceet3157
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs et3157: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
et3157-etched.fit.json et3157: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
et3157-etched.glb et3157: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
et3157-etched.step et3157: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
et3157.glb Publish 0.1.0 · Ray
et3157.kicad_mod Publish 0.1.0 · Ray
et3157.kicad_sym Publish 0.1.0 · Ray
et3157.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
et3157.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json et3157: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md et3157: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

ET3157

UMW · Analog Switches, Multiplexers · SC-70-6

ET3157 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 switch data port B1. Passes through to A when Select is high. Analog signal range 0 to VCC; on-resistance typ 3-17Ω depending on VCC.
2 GND power_in Ground / substrate reference (Land).
3 B0 bidirectional Analog switch data port B0. Passes through to A when Select is low. Analog signal range 0 to VCC.
4 A bidirectional Common analog switch port A. Connects to B0 (Select=L) or B1 (Select=H). Bidirectional analog signal path.
5 VCC power_in Positive supply, 1.65V to 5.5V operating (absolute max 7V). Sets the analog signal range and logic thresholds.
6 Select input Digital channel-select input with over-voltage tolerance up to 7V (may exceed VCC). L = route B0→A, H = route B1→A. Must not be left floating.

Key specifications

Parameter Value
Manufacturer UMW
Package SC-70-6
Category Interface
Pins 6

CAD (KiCad official)

  • Symbol: ET3157
  • Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
  • 3D model: SC-70-6 (KiCad packages3D, STEP)
  • 3D model files: et3157-etched.step / et3157-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); et3157.step / et3157.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
et3157.step 99 KB You want the bare part, or you mark your own boards.
et3157-etched.step 1.2 MB You want the part with ET3157 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 301 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: UMW datasheet (13 pp, sha256 3aefe2b48b982b83, 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