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KIA7818API-U

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KEC Semicon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220F. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)kia7818api-ufactory-2.0.0extractor-text

Verified KIA7818API-U

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: KIA7818API-U · TO-220F · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 20-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-220F-3_Vertical
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-5gxw_n6a/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ kia7818api-u.kicad_sym✓ kia7818api-u.kicad_mod✓ kia7818api-u.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 2h ago
viewers Publish 0.1.0 · Ray 2h ago
kia7818api-u-hero.glb Publish 0.1.0 · Ray 2h ago
kia7818api-u-hero.overlay.json Publish 0.1.0 · Ray 2h ago
kia7818api-u.glb Publish 0.1.0 · Ray 2h ago
kia7818api-u.kicad_mod Publish 0.1.0 · Ray 2h ago
kia7818api-u.kicad_sym Publish 0.1.0 · Ray 2h ago
kia7818api-u.lbr Publish 0.1.0 · Ray 2h ago
kia7818api-u.step Publish 0.1.0 · Ray 2h ago
package.json Publish 0.1.0 · Ray 2h ago
page.json Set visibility: public · Ray 2h ago
README.md Publish 0.1.0 · Ray 2h ago
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray 1h ago

KIA7818API-U

KEC Semicon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220F

KIA7818API-U from KEC Semicon, in a TO-220F. 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 INPUT power_in Unregulated input voltage terminal; absolute maximum input voltage is 40 V for KIA7818, and it needs a capacitor to GND.
2 GND power_in Ground terminal, also connected to the package, and the reference for the input and output capacitors.
3 OUTPUT power_out Regulated 18 V output (17.3 to 18.7 V at Tj=25°C, IOUT=100mA) with output current in excess of 1 A and internal short-circuit current limiting.

Key specifications

Parameter Value
Manufacturer KEC Semicon
Package TO-220F
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 VOUT 17.3 18 18.7 V Tj=25℃, IOUT=100mA 11
Output Voltage VOUT 17.1 18.9 V 21V≤VIN≤33V, 5.0mA≤IOUT≤1.0A, Po≤15W 11
Input Regulation Reg line 13 360 mV Tj=25℃, 21V≤VIN≤33V 11
Input Regulation Reg line 4 180 mV Tj=25℃, 24V≤VIN≤30V 11
Load Regulation Reg load 12 360 mV Tj=25℃, 5mA≤IOUT≤1.4A 11
Load Regulation Reg load 4 180 mV Tj=25℃, 250mA≤IOUT≤750mA 11
Quiescent Current IB 4.5 8 mA Tj=25℃, IOUT=5mA 11
Quiescent Current Change IB 1 mA 21V≤VIN≤33V 11
Ripple Rejection Ratio RR 52 68 dB f=120Hz, 22V≤VIN≤32V, IOUT=50mA, Tj=25℃ 11
Input Voltage VIN 40 V KIA7818 (Ta=25℃) 1
Power Dissipation-1 (No Heatsink), API PD1 2 W No heatsink, API (TO-220IS), Ta=25℃ 1
Power Dissipation-2 (Infinite Heatsink), API PD2 20.8 W Infinite heatsink, API (TO-220IS), Ta=25℃ 1
Operating Junction Temperature Tj -40 150 °C 1
Storage Temperature Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: KIA7818API-U
  • Footprint: Package_TO_SOT_THT:TO-220F-3_Vertical
  • 3D model: TO-220F (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: KEC Semicon datasheet (20 pp, sha256 edd644632a33a22d, retrieved 2026-11-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), 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