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AP131-18WG-7

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Diodes Incorporated Linear Voltage Regulators (LDO), SOT-25. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icsap131-18wg-7factory-2.0.0extractor-text

Verified AP131-18WG-7

by Ray · last 13 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

13 Nov 2026RayPublished by the parts factory: tier mfr, 5 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • •array (skip): not an array of element pairs
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: AP131-18WG-7 · SOT-25 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 7-page datasheet
  • ✓distributor: lcsc C7502235, digikey AP131-18WGTR-ND, mouser 621-AP131-18WG-7
  • ✓family: SOT-23-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-97rnran_/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.6)
  • ✓pads: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 19 kB, viewers/symbol.html 8 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ap131-18wg-7.kicad_sym✓ ap131-18wg-7.kicad_mod✓ ap131-18wg-7.step
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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AP131-18WG-7

Diodes Incorporated · Linear Voltage Regulators (LDO) · SOT-25

AP131-18WG-7 from Diodes Incorporated, in a SOT-25. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

Pinout

Pin Name Type Function
1 IN power_in Input voltage pin; the datasheet recommends VIN from 2.7 V to 5.5 V, and the absolute maximum input voltage (VCC) is 6 V.
2 GND power_in Ground pin for the regulator.
3 EN input Enable pin that turns the output on when driven above 1.5 V (VENON) and off when at or below 0.8 V (VENOFF); it must not exceed VIN.
4 BP passive Band-gap reference node where an external capacitor (CBP) can be connected to reduce output noise.
5 OUT power_out Regulated output voltage pin, rated for up to 300 mA output current (IOUT 0 to 300 mA recommended).

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-25
Category Power Management ICs
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Dropout Voltage VDROP 400 500 mV IL = 300mA 3
Current Limit ILIMIT 350 450 mA VIN = 5V, VOUT = 0V 3
Short Circuit Current Ishort 150 300 mA VOUT < 1.05V 3
Line Regulation ΔVLINE 0.1 0.3 %/V IOUT = 1mA, VIN = (VOUT +1V) to 5.5V 3
Load Regulation ΔVLOAD 30 35 mV IL = 1~300mA, VIN = 5V 3
Output Voltage Accuracy ΔVOUT -2 2 % IL = 1mA, VIN = 5V 3
Output Voltage Temperature Coefficient 50 150 PPM/°C 3
Standby Current ISB 5 μA IL = 0mA, VIN = 5V, EN = 0V 3
Quiescent Current IQ 50 100 μA IL = 0mA, VIN = 5V, EN = 5V 3
Enable Pin Current IEN 0.1 μA 3
Enable Pin Voltage (ON) VENON 1.5 V Output ON 3
Enable Pin Voltage (OFF) VENOFF 0 0.8 V Output OFF 3
Input Voltage VIN 2.7 5.5 V 2
Output Current IOUT 0 300 mA 2
Operating Ambient Temperature TA -40 85 °C 2
Input Voltage (absolute maximum) VCC 6 V 2
Operating Junction Temperature Range TOP -40 125 °C 2
Storage Temperature Range TST -65 150 °C 2
Power Dissipation PD 250 mW PD@ TA = 25°C SOT25 2
Thermal Resistance Junction-to-Ambient ΘJA 163 °C/W SOT25 (Note 8) 3
Thermal Resistance Junction-to-Case ΘJC 53 °C/W SOT25 (Note 8) 3

CAD (land: KiCad; 3D: generated from the datasheet)

  • Symbol: AP131-18WG-7
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25, generated on the KiCad land (body 1.6 x 2.8 mm, terminals on the pads, 1.1 mm tall, datasheet A, nominal). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
  • 3D model files: ap131-18wg-7-etched.step / ap131-18wg-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap131-18wg-7.step / ap131-18wg-7.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 3398951f7d054688, retrieved 2026-11-13, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

Datasheet PDF