component
AS78L12RTR-G1
Public Made by Adomby adom
Diodes Incorporated Dropout Regulators(LDO), SOT-89. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAS78L12RTR-G1
Diodes Incorporated · Dropout Regulators(LDO) · SOT-89
AS78L12RTR-G1 from Diodes Incorporated, in a SOT-89. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUTPUT | power_out | Regulated +12V positive output. Delivers up to 100mA with typical dropout of 1.7V at 40mA and 1.8V at 100mA. A 0.1uF ceramic output capacitor to GND is recommended for stability and to limit high-frequency noise. |
| 2 | GND | power_in | Ground / common return. The center lead is also electrically connected to the large SOT-89 heat-spreader tab; both must be tied to the ground plane, which additionally serves as the thermal path (theta_JC = 28.3 degC/W in SOT-89). |
| 3 | INPUT | power_in | Unregulated positive supply input. Accepts up to 36V (absolute max) and up to 36V under recommended operating conditions for the AS78L12 variant. A 0.33uF input capacitor to GND is recommended, especially when the device is located more than a few inches from the bulk supply filter. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-89 |
| Category | Power Management ICs |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
AS78L12RTR-G1AS78L12RTR-G1RAS78L12RTR-G1ZAS78L12RTR-G1M
CAD (KiCad official)
- Symbol:
AS78L12RTR-G1 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
as78l12rtr-g1-etched.step/as78l12rtr-g1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);as78l12rtr-g1.step/as78l12rtr-g1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (17 pp, sha256
dae32ffe04830377, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).