MC78M05BDTRKG

@@ -0,0 +1,50 @@+# MC78M05BDTRKG++**onsemi** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)++MC78M05BDTRKG from onsemi, in a TO-252-2(DPAK). 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 | VI | power_in | Unregulated input voltage. Operating range up to 25 Vdc for the 5 V variant; absolute maximum input voltage is 35 Vdc. Typical dropout is 2.0 V; a bulk input capacitor is recommended when the regulator is located far from the filter capacitor. |+| 2 | GND | power_in | Common ground reference for input and output. Also thermally bonded to the heatsink tab (pin 4 of the case outline is internally connected to pin 2). |+| 3 | VO | power_out | Regulated +5.0 V output (4.8-5.2 V at TJ=25 °C). Rated for 500 mA maximum with adequate heatsinking; short-circuit current limit ~350 mA, peak output current ~700 mA. A small output capacitor improves transient response. |+| 4 | TAB | passive | Exposed heatsink tab on the DPAK-3 case outline; internally connected to pin 2 (Ground). Solder to a copper pour for thermal dissipation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | TO-252-2(DPAK) |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `MC78M05BDTRKGBDTRKG`+- `MC78M05BDTRKGCDTRKG`+- `MC78M05BDTRKGABDTRKG`+- `MC78M05BDTRKGACDTRKG`+- `MC78M05BDTRKGBTG`+- `MC78M05BDTRKGCTG`+- `MC78M05BDTRKGABTG`+- `MC78M05BDTRKGACTG`++## CAD (KiCad official)++- Symbol: `MC78M05BDTRKG`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/mc78m05bdtrk-d.pdf) (16 pp, sha256 `f676eb1d232d9a95`, retrieved 2026-08-17, tier: manufacturer)+- **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/mc78m05bdtrkg-datasheet.pdf)

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