MC78M05CDT-TP from MCC Micro Commercial Components, 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	IN	power_in	Unregulated positive input voltage. Absolute maximum 35 V; recommended operating range approximately 7 V to 25 V for a 5 V output. A 0.33 uF bypass capacitor to GND is recommended close to the pin.
2	GND	power_in	Ground / common return for the regulator. Electrically tied to pin 4 (the DPAK tab), which also serves as the primary thermal path to the PCB copper.
3	OUT	power_out	Regulated +5.0 V output (typ 5.0 V, min 4.75 V, max 5.25 V) capable of delivering >0.5 A. A 0.1 uF output capacitor to GND is recommended for transient response and stability.
4	GND	power_in	DPAK metal tab, internally connected to pin 2 (GND). Provides both the ground return and the primary thermal dissipation path - solder to a copper pour for R_thetaJA closer to spec (100 C/W to ambient).

Key specifications

Parameter	Value
Manufacturer	MCC Micro Commercial Components
Package	TO-252-2(DPAK)
Category	PMIC
Pins	4

Ordering variants

Same part, different packaging or reel option.

MC78M05CDT-TP
MC78M05CDT-TP-HF

CAD (KiCad official)

Symbol: MC78M05CDT-TP
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: MCC Micro Commercial Components datasheet (4 pp, sha256 6f4533f698c0958e, 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