MC78M05CDTRKG
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | TO-252-3, DPak (2 Leads + Tab), SC-63 |
| Mfr | onsemi |
| Mounting Type | Surface Mount |
| Operating Temperature | 0°C ~ 125°C |
| Voltage - Input (Max) | 35V |
| Output Type | Fixed |
| Current - Output | 500mA |
| Supplier Device Package | DPAK |
| Output Configuration | Positive |
| Control Features | - |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Number of Regulators | 1 |
| Protection Features | Over Temperature, Short Circuit |
| PSRR | 80dB (120Hz) |
| Voltage Dropout (Max) | - |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | MC78M05 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
MC78M05CDTRKG onsemi 500 mA, 5.0 V Fixed Positive Linear Regulator
The MC78M05CDTRKG is a member of the onsemi MC78M00 medium-current, three-terminal linear regulator family, optimized for “local on-card” regulation where simplicity, robustness, and predictable thermal behavior matter more than peak efficiency. It provides a fixed 5.0 V output and is specified to deliver up to 500 mA with adequate heatsinking/PCB copper, making it a classic choice for cleaning up unregulated rails derived from transformers, AC/DC bricks, or front-end DC/DC pre-regulators. The device operates from inputs up to 35 V (practical recommended minimum around 7 V to maintain regulation margin), with a typical dropout near 2.0 V @ load—so expect roughly VIN ≥ 7.0 V for sustained 5.0 V regulation under moderate current.
Typical use cases include post-regulation for switching pre-regulators, standalone wall-adapter/wall-wart 9–24 V → 5 V rails, peripheral/sensor supply cleanup, legacy 5 V logic and industrial control boards, and anywhere you want a low-complexity, low-EMI 5 V rail without inductors, compensation loops, or mode-dependent stability headaches.
Alternate linear regulators
●MC78M05BDTRKG (onsemi, DPAK): functionally aligned 5 V/500 mA 78M-class DPAK regulator from the same family; often chosen when a slightly different accuracy/grade or purchasing variant fits better, with identical footprint and thermal style.
●MC78M05CTG / MC78M05TG (onsemi, TO-220-3 through-hole): through-hole 78M05 option when your board can use vertical/horizontal TO-220 heatsinking and you want easier manual rework or higher copper mass without SMT reflow constraints.
●L78M05CDT-TR (ST, DPAK/TO-252): ST's 5 V/500 mA positive linear regulator in a compatible DPAK outline, widely used as a second-source; verify line/load limits, dropout curve, and thermal pad expectations against your PCB.
