onsemi

MC78M18CT

MC78M18CT Description

The MC78M18CT is a fixed-output linear voltage regulator designed by onsemi. It offers a robust and reliable solution for applications requiring a stable 18V output voltage with a maximum output current of 500mA. This regulator is housed in a through-hole TO220AB package, making it suitable for a variety of industrial and commercial applications. Despite being marked as obsolete, the MC78M18CT remains a viable option due to its proven performance and availability.

MC78M18CT Features

• Output Type: Fixed, providing a consistent 18V output voltage.
• Input Voltage Range: Capable of handling input voltages up to 35V, ensuring compatibility with a wide range of power sources.
• Output Current: Delivers a maximum output current of 500mA, suitable for moderate power applications.
• Number of Regulators: Single regulator design, simplifying circuit integration.
• Output Configuration: Positive output configuration, ideal for standard power supply requirements.
• Protection Features: Equipped with over-temperature and short-circuit protection, enhancing reliability and longevity.
• Operating Temperature: Wide operating temperature range from 0°C to 125°C, making it suitable for both ambient and elevated temperature environments.
• Power Supply Rejection Ratio (PSRR): Achieves 70dB at 120Hz, ensuring high performance in noise-sensitive applications.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited), indicating high resistance to moisture, which is crucial for long-term stability.
• Package: Supplied in a tube package, facilitating easy handling and integration into various systems.
• Compliance: REACH Unaffected, ensuring compliance with environmental and safety regulations.

MC78M18CT Applications

The MC78M18CT is ideal for applications that require a stable and reliable power supply with a fixed output voltage. Its robust design and protection features make it suitable for:

• Industrial Equipment: Providing stable power to control systems, sensors, and actuators.
• Consumer Electronics: Used in devices where a fixed voltage supply is necessary for consistent performance.
• Telecommunications: Powering components in communication systems that require a stable 18V supply.
• Automotive: Suitable for automotive applications where a reliable power supply is critical.
• Medical Devices: Ensuring stable power supply for medical equipment that operates within the specified voltage and current range.

Conclusion of MC78M18CT

The MC78M18CT, despite being marked as obsolete, remains a reliable and efficient linear voltage regulator. Its fixed 18V output and 500mA current capability make it suitable for a wide range of applications. The inclusion of over-temperature and short-circuit protection ensures robustness and reliability, while its wide operating temperature range and high PSRR make it ideal for noise-sensitive environments. The through-hole TO220AB package and tube packaging further enhance its ease of integration into various systems. For applications requiring a stable and reliable power supply, the MC78M18CT is an excellent choice, offering proven performance and durability.