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78L08-300

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UMW Linear Voltage Regulators (LDO), SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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78L08-300

UMW · Linear Voltage Regulators (LDO) · SOT-89-3

78L08-300 from UMW, in a SOT-89-3. 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 OUT power_out Regulated output pin providing the fixed 8V output for the 78L08, with a maximum output current of 0.3 A.
2 GND power_in Ground reference pin for the regulator.
3 IN power_in Unregulated input pin; the absolute maximum input voltage is 35 V for output voltages from 5 V to 18 V, which includes the 8 V 78L08.

Key specifications

Parameter Value
Manufacturer UMW
Package SOT-89-3
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 VO 7.88 8 8.12 V TJ=25°C 6
Output Voltage VO 7.68 8 8.32 V 10.5V≤VI≤23V, IO=5mA~200mA 6
Ripple Rejection Ratio PSRR 56 80 dB 11.5V≤VI≤21.5V, f=120Hz 6
Quiescent Current Iq1 3.2 6 mA IO=0mA 6
Input Voltage VI 35 V VO=5V~18V 2
High power dissipation PD 800 mW 2
Operating Temperature TOPR -20 120 °C 2
Storage Temperature TSTG -55 150 °C 2
Output Current IO 0.3 A 2

CAD (KiCad official)

  • Symbol: 78L08-300
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: 78l08-300-etched.step / 78l08-300-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 78l08-300.step / 78l08-300.glb are the bare package body.

Provenance

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

  • Datasheet: UMW datasheet (15 pp, sha256 43e8779d625b95a5, retrieved 2026-10-27, tier: lcsc)
  • 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: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF