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ws72551m-8

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WILLSEMI Will Semicon Operational Amplifier, MSOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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WS72551M-8

WILLSEMI Will Semicon · Operational Amplifier · MSOP-8

WS72551M-8 from WILLSEMI Will Semicon, in a MSOP-8. 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 NC unconnected No connection. Leave floating or tie to a fixed potential per system convention.
2 -IN input Inverting input of the op-amp. Rail-to-rail input range extends from V- - 0.1 V to V+ + 0.1 V. Ultra-low input bias current (~10 pA typ).
3 +IN input Non-inverting input of the op-amp. Rail-to-rail input range extends from V- - 0.1 V to V+ + 0.1 V. Ultra-low input bias current (~10 pA typ).
4 V- power_in Negative supply (or ground in single-supply operation). Supply voltage V+ - V- may range from 2.5 V to 5 V (6 V absolute max).
5 NC unconnected No connection. Leave floating or tie to a fixed potential per system convention.
6 OUT output Rail-to-rail output. Drives loads down to ~6 mV from V- and 4 mV from V+ (RL = 10 kΩ / 100 kΩ). Output short-circuit limit current ±58 mA typ, ±70 mA max. Indefinite short-to-GND withstand.
7 V+ power_in Positive supply. Supply voltage V+ - V- may range from 2.5 V to 5 V (6 V absolute max). Quiescent current ~265 μA per amplifier at VS = 5 V.
8 NC unconnected No connection. Leave floating or tie to a fixed potential per system convention.

Key specifications

Parameter Value
Manufacturer WILLSEMI Will Semicon
Package MSOP-8
Category Op-amp/Cmp
Pins 8

Ordering variants

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

CAD (KiCad official)

  • Symbol: WS72551M-8
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (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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