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WAS3157B-6

Public Made by Adom

by adom

WILLSEMI Will Semicon Analog Switches, Multiplexers, SOT-363. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs was3157b-6: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
page.json was3157b-6: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 18h ago
README.md was3157b-6: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 18d ago
was3157b-6-etched.fit.json was3157b-6: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
was3157b-6-etched.glb was3157b-6: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
was3157b-6-etched.step was3157b-6: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
was3157b-6.glb Publish 0.1.0 · Ray 1mo ago
was3157b-6.kicad_mod Publish 0.1.0 · Ray 1mo ago
was3157b-6.kicad_sym Publish 0.1.0 · Ray 1mo ago
was3157b-6.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 6 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
was3157b-6.step Publish 0.1.0 · Ray 1mo ago

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=3.64.5V) or ≥ 1.3V (VCC=2.33.6V); 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

Same part, different packaging or reel option.

  • 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)
  • 3D model files: was3157b-6-etched.step / was3157b-6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); was3157b-6.step / was3157b-6.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
was3157b-6.step 99 KB You want the bare part, or you mark your own boards.
was3157b-6-etched.step 2.0 MB You want the part with WAS3157B-6 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 489 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: WILLSEMI Will Semicon datasheet (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