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WS72551E-5

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by Ray

WILLSEMI Will Semicon Operational Amplifier, SOT-23-5L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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WS72551E-5

WILLSEMI Will Semicon · Operational Amplifier · SOT-23-5L

WS72551E-5 from WILLSEMI Will Semicon, in a SOT-23-5L. 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 +IN input Non-inverting input of the op-amp. Rail-to-rail input; usable common-mode range extends from V- - 0.1 V to V+ + 0.1 V (VCMR spec).
2 V- power_in Negative supply rail. Tie to GND for single-supply operation, or to a negative rail for dual-supply. Total supply (V+ - V-) rated up to 6 V absolute maximum; recommended 2.5 V to 5 V.
3 -IN input Inverting input of the op-amp. Rail-to-rail input; input bias current ~10 pA typical.
4 OUT output Amplifier output. Rail-to-rail output swing; short-circuit current limited to ±58 mA typ (±70 mA max). Slew rate 1.2 V/µs.
5 V+ power_in Positive supply rail. Recommended 2.5 V to 5 V single-supply; absolute-maximum supply (V+ - V-) is 6 V. Quiescent current ~240 µA per amplifier.

Key specifications

Parameter Value
Manufacturer WILLSEMI Will Semicon
Package SOT-23-5L
Category Op-amp/Cmp
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • WS72551E-5/TR
  • WS72551EA-5/TR
  • WS72551S-8/TR
  • WS72551M-8/TR
  • WS72552S-8/TR
  • WS72552M-8/TR

CAD (KiCad official)

  • Symbol: WS72551E-5
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: WILLSEMI Will Semicon datasheet (18 pp, sha256 627c731db97a1142, 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