onsemi

MC7912CD2TG

MC7912CD2TG Description

The MC7912CD2TG from onsemi is a fixed-output negative voltage regulator delivering -12V at 1A with high efficiency and reliability. Designed for surface-mount applications, this obsolete but robust component remains relevant in legacy designs due to its low dropout voltage (1.3V typical at 1A) and wide operating temperature range (0°C to 125°C). Housed in a D2PAK (TO-263) package, it offers excellent thermal performance, making it suitable for power-dissipating applications. With 61dB PSRR (120Hz), it ensures stable output even in noisy environments. Compliant with ROHS3 and REACH standards, it features over-current and over-temperature protection, enhancing system safety.

MC7912CD2TG Features

• Fixed -12V Output: Precision-regulated negative voltage for consistent performance.
• High Current Capacity: Supports 1A output current with minimal dropout.
• Robust Protection: Integrated over-current and over-temperature safeguards.
• Low Noise: 61dB PSRR at 120Hz reduces ripple in sensitive circuits.
• Wide Temperature Range: Operates from 0°C to 125°C, ideal for industrial environments.
• Surface-Mount Design: D2PAK package optimizes heat dissipation and PCB space.
• Compliance: ROHS3 and REACH compliant, with MSL 1 (Unlimited) moisture sensitivity.

MC7912CD2TG Applications

• Power Supplies: Negative rail generation in dual-voltage systems.
• Industrial Equipment: Stable voltage for control systems, motor drives, and instrumentation.
• Audio Amplifiers: Low-noise power delivery for high-fidelity audio circuits.
• Legacy Systems: Maintenance and repair of older electronics requiring -12V regulation.
• Automotive Electronics: Suitable for non-critical automotive modules within its temperature range.

Conclusion of MC7912CD2TG

The MC7912CD2TG is a dependable negative voltage regulator offering high current output, thermal resilience, and critical protection features. While obsolete, its performance in noisy, high-temperature environments makes it a preferred choice for industrial, audio, and legacy applications. Engineers valuing low dropout, high PSRR, and robust packaging will find it a practical solution despite newer alternatives. Its compliance with environmental standards further ensures compatibility with modern design requirements.