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AP7381-28V-A

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Diodes Incorporated Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ap7381-28v-afactory-2.0.0extractor-text

Verified AP7381-28V-A

by Ray · last 2 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

2 Nov 2026RayPublished by the parts factory: tier mfr, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: AP7381-28V-A · TO-92 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 13-page datasheet
  • ✓distributor: lcsc C3747442, digikey AP7381-28V-A-ND, mouser 621-AP7381-28V-A
  • ✓family: TO-92_Inline
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-9ajoagmn/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): the datasheet dimensions give no height or body size to compare (datasheet p.9)
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ap7381-28v-a.kicad_sym✓ ap7381-28v-a.kicad_mod✓ ap7381-28v-a.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1d ago
viewers ap7381-28v-a: viewers · Ray 1d ago
ap7381-28v-a-etched.glb Publish 0.1.0 · Ray 1d ago
ap7381-28v-a-etched.step ap7381-28v-a: factory component page (tier=mfr) · Ray 1d ago
ap7381-28v-a-hero.glb ap7381-28v-a: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
ap7381-28v-a-hero.overlay.json Publish 0.1.0 · Ray 1d ago
ap7381-28v-a.glb Publish 0.1.0 · Ray 1d ago
ap7381-28v-a.kicad_mod Publish 0.1.0 · Ray 1d ago
ap7381-28v-a.kicad_sym Publish 0.1.0 · Ray 1d ago
ap7381-28v-a.lbr Publish 0.1.0 · Ray 1d ago
ap7381-28v-a.step Publish 0.1.0 · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago
verification.json Verified: Published by the parts factory: tier mfr, 3 pins · Ray 1d ago

AP7381-28V-A

Diodes Incorporated · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92

AP7381-28V-A from Diodes Incorporated, in a TO-92. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VOUT power_out Regulated output voltage (2.8V fixed for AP7381-28V-A), delivering up to 150mA output current with 2.2µF output capacitor.
2 GND power_in Ground reference pin for the regulator.
3 VIN power_in Input voltage pin, recommended operating range 3.3V to 40V (absolute maximum -0.3 to 45V).

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package TO-92
Category Power Management (PMIC)
Pins 3

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Output Voltage Variation from Specified VOUT VOUT 98 102 % of VOUT 3
Input Voltage VIN 3.3 40 V 3
Current Limit ILIMIT 150 mA VOUT = 98% x VOUT, VIN = VOUT + 2V 3
Thermal Shutdown Temperature TOTSD 160 °C 3
Thermal Shutdown Hysteresis THYOTSD 20 °C 3
Line Regulation △VOUT/∆VIN 0.05 %/V VOUT + 2V ≤ VIN ≤ 40V, IOUT = 10mA 3
Load Regulation △VOUT/VOUT 0.5 % 1mA ≤ IOUT ≤ 150mA 3
Ground Current IGND 2.5 µA IOUT = 0A 3
Ground Current IGND 25 µA IOUT = 100mA 3
Output Voltage Temperature Coefficient ∆VOUT/(VOUTx∆T) 100 ppm/°C IOUT = 100µA, -40oC ≤ TJ ≤ +125°C 3
Power Supply Rejection Ratio PSRR 60 dB IOUT = 1mA, VOUT = 3.3V 3
Supply Input Voltage VIN -0.3 45 V 2
Output Voltage VOUT -0.3 8 V 2
Output Current IOUT 150 mA 2
Lead Temperature (Soldering, 10s) TLEAD 260 ºC 2
Operating Junction Temperature TJ 150 ºC 2
Storage Temperature Range TSTG -65 150 ºC 2
CDM ESD (Change Device Model) CDM 2000 V 2
HBM ESD (Human Body Model) HBM 4000 V 2
Thermal Resistance TO92 (Ammo Packing) θJA 165 °C/W TO92 (Ammo Packing) 2
Supply Input Voltage VIN 3.3 40 V 2
Operating Junction Temperature TJ -40 125 °C 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing Abs HBM ESD (Human Body Model) 4000 V Note: 4. a). Stresses beyond those listed under Absolute Maximum Ratings can cause permanent damage to the device. These are stress ratings only, and 2
contacts tin  Terminals: Finish Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208  Weight: 12

CAD (KiCad official)

  • Symbol: AP7381-28V-A
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: ap7381-28v-a-etched.step / ap7381-28v-a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap7381-28v-a.step / ap7381-28v-a.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (13 pp, sha256 657d25b1f48ab5dc, retrieved 2026-11-02, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-opus-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: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF