component
78L08-300
Public Made by Adomby adom
UMW Linear Voltage Regulators (LDO), SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdown78L08-300
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);78l08-300.step/78l08-300.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).