MC78M15CDTG

MC78M15CDTG is a fixed, positive 15-volt linear voltage regulator from the MC78M family. It provides a regulated 15 V output from a higher input (typical range ~18–30 V) with three terminals: IN, GND, OUT (common pinout: left to right with the tab at the back). It includes built‑in protection features such as current limiting and thermal shutdown. Output current rating is around 0.5 A (some variants up to ~0.8 A; check your exact part). Dropout voltage is typically about 2 V at rated current, so the input must be at least ~2 V above 15 V under load. Suitable for creating 15 V rails in power supplies for microcontrollers, sensors, and other circuits. The CDTG suffix indicates RoHS‑compliant packaging (exact package type may vary, e.g., TO‑220 or similar); verify the datasheet for the precise package and pinout. For precise current, thermal, and electrical specs, consult the MC78M15CDTG datasheet.

Equivalents for MC78M15CDTG (15V, 1.5A positive regulator) include:
- LM78M15 (Texas Instruments)
- L78M15 / L78M15CV (STMicroelectronics)
- KA78M15 (Fairchild/ON Semiconductor cross)
Note: these share the same 3-pin TO-220 package and similar pinout; verify datasheet for exact variant and heat-sinking needs.

MC78M15CDTG features (concise):
- Fixed positive 15 V output
- Maximum output current: up to ~0.5 A
- Input voltage range up to 30 V (max rating per datasheet)
- Dropout voltage ≈ 2 V (typical)
- Built‑in protection: short‑circuit protection, thermal/overload protection, and safe‑area protection
- Regulated output with good line and load regulation
- Requires external capacitors for stability (typical: input cap ~0.33 μF or larger; output cap ~0.1 μF or larger)
- Wide operating temp range (roughly -40°C to +125°C)
- Package: TO-220 style (CDTG suffix indicates specific package/leadframe; variants available with different mounting/tape options)
Note: exact figures (current, voltage range, tolerances) are per datasheet; design around typical guidelines.

- Pin count: 3 pins.
- Function: Fixed positive voltage regulator (MC78M15) that provides a regulated +15 V output (up to about 0.5 A). Pinout (left to right, facing front): Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output. Package: TO-220 (CDTG).

Manufacturer: ON Semiconductor (ON Semiconductor Corporation).
What kind of company: A American multinational semiconductor company that designs, manufactures, and sells a broad range of components and ICs (analog, power management, sensors, logic, etc.) for automotive, industrial, consumer, and other markets.

MC78M15CDTG is a fixed 15V positive linear regulator. Common application areas:
- Fixed 15V supply rail for analog/digital circuits in embedded systems, instrumentation, and consumer electronics
- Pre-regulator stage feeding DC-DC converters
- Power supplies for microcontrollers, op-amps, sensors, and audio/prequency circuits
- Prototyping, educational kits, and lab bench power supplies
- Industrial or automotive equipment requiring a stable 15V rail (with appropriate heat sinking)
Note: Input must exceed 15V and proper input/output capacitors and thermal management are required.

TO-220AB through-hole plastic package (RoHS-compliant).