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AP7381-33SA-7

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Diodes Incorporated 3.3 V 150 mA LDO, input to 40 V, SOT23 (SA). Datasheet-cited specs, KiCad symbol, footprint and 3D, Fusion and Altium libraries.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
altium ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
docs ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
provenance ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
viewers ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
ap7381-33sa-7-etched.glb ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
ap7381-33sa-7-etched.step ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
ap7381-33sa-7-hero.glb ap7381-33sa-7: hero GLB from publish, page.json after publish · noah
ap7381-33sa-7-hero.overlay.json ap7381-33sa-7: hero GLB from publish, page.json after publish · noah
ap7381-33sa-7.glb ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
ap7381-33sa-7.kicad_mod ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
ap7381-33sa-7.kicad_sym ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
ap7381-33sa-7.lbr ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
ap7381-33sa-7.step Publish 0.1.1 · noah
LICENSE ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
package.json Publish 0.1.1 · noah
page.json ap7381-33sa-7 0.1.1: DigiKey number, hero GLB, page.json after publish · noah
README.md ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah
verification.json ap7381-33sa-7: library, CAD, datasheet and docs (1/1) · noah

AP7381-33SA-7

Diodes Incorporated · Linear regulator (LDO) · SOT23 (SA)

Diodes Incorporated AP7381-33SA-7: a fixed 3.3 V, 150 mA low-dropout linear regulator with a wide input range (up to 40 V) and very low quiescent current, in a 3-pin SOT23.

Verification

A person checks each page against its datasheet and signs it off here; the badge turns amber if a checked file changes.

Pinout

Pin Name Type Function
1 VOUT power_out Regulated 3.3 V output (ds p.2)
2 GND power_in Ground (ds p.2)
3 VIN power_in Input, up to 40 V (ds p.2)

Key specifications

Parameter Value Source
Output voltage 3.3 V, ±2 % (VOUT x 98 % to x 102 %) datasheet p.3
Output current 150 mA datasheet p.2
Input voltage (operating) up to 40 V datasheet p.2
Input voltage (absolute maximum) -0.3 to 45 V datasheet p.2
Dropout 1000 mV at 100 mA datasheet p.1, p.3
Output temperature coefficient ±100 ppm/°C datasheet p.3
Operating junction temperature -40 to +125 °C datasheet p.2
Package SOT23, 3 pins (SA) datasheet p.1, p.2

Ordering

Distributor Part number Stock (2026-11-03) Note
Mouser 621-AP7381-33SA-7 427,379 lead time 280 Days, $0.29 each
DigiKey 31-AP7381-33SA-7TR-ND number from a DigiKey lookup on 2026-11-03
LCSC / JLCPCB not looked up

CAD

File What it is
ap7381-33sa-7.kicad_sym KiCad symbol from KiCad's Regulator_Linear:AP7381-33SA-7, with MPN, manufacturer, Mouser and DigiKey numbers as properties
ap7381-33sa-7.kicad_mod KiCad footprint: KiCad's Package_TO_SOT_SMD:SOT-23
ap7381-33sa-7.step / ap7381-33sa-7.glb 3D model, Z-up, seated on z = 0: KiCad packages3D SOT-23.step (KiCad 10.0.4 library on noah-asus), unmodified
ap7381-33sa-7-etched.step / ap7381-33sa-7-etched.glb The same model with the part number laser-etched on top as a separate Adom.LaserEtch group (a virtual identification aid, not the maker's real marking)
ap7381-33sa-7.lbr Fusion 360 / EAGLE library: one deviceset with MPN, MANUFACTURER, MOUSER_PN and DIGIKEY_PN attributes
altium/Adom_ap7381_33sa_7.SchLib / .PcbLib Altium library pair (adom-lbr, no Altium needed), parameters carry the part numbers; altium/*.adom-lbr.json is the hub it was built from
provenance/files.json Every file on this page: source, retrieval date, SHA-256, authoring class and generator

Provenance

  • Datasheet: docs/ap7381-33sa-7-datasheet.pdf (DS39917 Rev. 5-2), from www.diodes.com, retrieved 2026-10-30.
  • Specs: each row names its datasheet page.
  • Mouser number and stock: looked up 2026-11-03 with adom-mouser; DigiKey number with adom-digikey; exact part number and manufacturer.
  • Footprint: KiCad 10.0.4 library Package_TO_SOT_SMD:SOT-23, unmodified apart from its name.
  • 3D: KiCad packages3D SOT-23.step (KiCad 10.0.4 library on noah-asus), unmodified.