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ws72551ea-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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WS72551EA-5

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

WS72551EA-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 OUT output Amplifier output. Rail-to-rail output swing; short-circuit current limit ±58 mA typ (±70 mA max). Output-high swing within ~6 mV of V+ and output-low within ~4 mV of V- with 10 kΩ load.
2 V- power_in Negative supply rail. Connect to ground in single-supply operation. Total supply (V+ to V-) between 2.5 V and 5 V (absolute max 6 V).
3 +IN input Non-inverting input. Rail-to-rail input common-mode range from V- - 0.1 V to V+ + 0.1 V. Ultra-low input bias current (10 pA typ) and offset voltage (3 μV typ).
4 -IN input Inverting input. Rail-to-rail input common-mode range from V- - 0.1 V to V+ + 0.1 V. Differential input voltage absolute max ±5.0 V.
5 V+ power_in Positive supply rail. 2.5 V to 5 V single-supply operation (absolute max 6 V). Quiescent current ~240 μA typ per amplifier.

Key specifications

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

Ordering variants

  • WS72551EA-5/TR
  • WS72551EA-5E-5/TR
  • WS72551EA-5S-8/TR
  • WS72551EA-5M-8/TR

CAD (KiCad official)

  • Symbol: WS72551EA-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 (None 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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