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AS78L12RTR-G1
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Diodes Incorporated Dropout Regulators(LDO), SOT-89. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+47@@ -0,0 +1,47 @@+# AS78L12RTR-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-G1`+- `AS78L12RTR-G1R`+- `AS78L12RTR-G1Z`+- `AS78L12RTR-G1M`++## CAD (KiCad official)++- Symbol: `AS78L12RTR-G1`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8560107478353805312) (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).++[Datasheet PDF](docs/as78l12rtr-g1-datasheet.pdf)
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