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wr0332-33a50r

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by Ray

Wayon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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WR0332-33A50R

Wayon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

WR0332-33A50R from Wayon, in a SOT-23-5. 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 power_in Input voltage supply, 2.2 V to 5.5 V operating range (absolute max 6.0 V). Bypass with a 1 µF ceramic capacitor to GND placed as close to the IN and GND pins as possible.
2 GND power_in Common ground reference for the device. Return path for the input and output bypass capacitors.
3 EN input Enable input, active high. VENH ≥ 1.2 V enables regulation; VENL ≤ 0.4 V shuts the device down. Contains an internal ~0.1 µA (100 nA typ.) pull-up current source; tie to IN if the enable function is not needed. Absolute max 6.0 V.
4 NC unconnected No internal connection. May be left floating; do not use as a routing tie point.
5 OUT power_out Regulated output voltage (3.3 V nominal for the -33A50R variant), up to 300 mA. Requires a low-ESR 1 µF ceramic capacitor to GND for stability, placed close to the OUT and GND pins. An internal ~150 Ω pull-down discharges VOUT when the regulator is shut down.

Key specifications

Parameter Value
Manufacturer Wayon
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

  • WR0332-33A50R
  • WR0332-33A50RA30R
  • WR0332-33A50RFF4R

CAD (KiCad official)

  • Symbol: WR0332-33A50R
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Wayon datasheet (None pp, sha256 115200abc938e7fe, 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

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Datasheet

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