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SL7818

Public Made by Adom

by adom

Slkor(SLKORMICRO Elec.) Linear Voltage Regulators (LDO), TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SL7818

Slkor(SLKORMICRO Elec.) · Linear Voltage Regulators (LDO) · TO-220

SL7818 from Slkor(SLKORMICRO Elec.), in a TO-220. 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; absolute maximum 35V for VOUT=3.3~18V (SL7818 falls in this range), with 21V to 33V specified for SL7818 regulation.
2 GND power_in Ground reference pin; quiescent current is 8.0mA max at IOUT≤1.0A.
3 OUTPUT power_out Regulated 18V output (17.28V to 18.72V at 25°C) with output current up to 1A and short-circuit current of 250mA typical.

Key specifications

Parameter Value
Manufacturer Slkor(SLKORMICRO Elec.)
Package TO-220
Category Power Management ICs
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 17.28 18 18.72 V IOUT=5mA-1.0A 6
Output Voltage VOUT 17.1 18.9 V 21V≤VIN≤33V, IOUT=5mA-1.0A 6
Load Regulation ΔVOUT 180 mV IOUT=5mA-1.0A 6
Load Regulation ΔVOUT 90 mV IOUT=0.25A-0.75A 6
Line Regulation ΔVOUT 180 mV 21V≤VIN≤33V 6
Quiescent Current IQ 8 mA IOUT≦1.0A 6
Quiescent Current Change ΔIQ 1 mA 21.5V≤VIN≤33V 6
Quiescent Current Change ΔIQ 0.5 mA IOUT=5mA-1.0A 6
Ripple Rejection RR 53 69 dB 22V≤VIN≤32V, f=120Hz 6
Input Voltage VIN 35 V VOUT=3.3~18V 2
Output Current IOUT 1 A 2
Junction Temperature TJ 150 °C 2
Operating Temperature Range TOPR -20 150 °C 2
Storage Temperature Range TSTG -55 150 °C 2
Output Noise Voltage eN 110 µV 10Hz≤f≤100KHz 6
Temperature coefficient of VOUT ΔVO/ΔT -2.2 mV/℃ IOUT=5mA 6
Peak Output Current IPEAK 1.8 A 6
Short-Circuit Current ISC 250 mA VIN=35V 6
Dropout Voltage VD 2 V 6

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
contacts copper lead length of the package and copper pattern of PCB. The data are showed as electrical 2

CAD (KiCad official)

  • Symbol: SL7818
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: sl7818-etched.step / sl7818-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sl7818.step / sl7818.glb are the bare package body.

Provenance

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

  • Datasheet: Slkor(SLKORMICRO Elec.) datasheet (9 pp, sha256 084fc17b84f72c53, retrieved 2026-10-23, 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