Overview
The Motorola MCR649AP-3 is a silicon controlled rectifier (SCR) designed for industrial power control and switching applications. This discrete semiconductor component delivers reliable switching performance in power management, motor control, and other industrial circuits. The MCR649AP-3 operates in the TO-3 package, a proven form factor for high-power semiconductor applications.
Key Features
- Silicon controlled rectifier (SCR) for precise switching control
- Rated for 25V repetitive peak off-state voltage (VDRM/VRRM)
- 20A on-state RMS current capability (IT(RMS))
- TO-3 package for superior thermal and mechanical performance
- Operating temperature range: −65°C to +125°C
- Motorola quality and industrial-grade reliability
Technical Specifications
- Component Type: Silicon Controlled Rectifier (SCR)
- Repetitive Peak Off-State Voltage (VDRM/VRRM): 25V
- On-State RMS Current (IT(RMS)): 20A
- Package Type: TO-3
- Operating Temperature Range: −65°C to +125°C
- Manufacturer: Motorola
Typical Applications
The Motorola MCR649AP-3 is commonly used in:
- Industrial motor control circuits
- Power switching and regulation circuits
- Thyristor-based power conversion systems
- Temperature control and heating element switching
- Industrial power management systems
Compatibility & Replacements
Compatible With
- Industrial 25V DC control circuits
- TO-3 socket and PCB mounting configurations
- Thyristor-based power control systems
- Legacy Motorola semiconductor ecosystems
Replaces / Drop-In Replacement For
- MCR649AP-1 (Motorola 25V/20A SCR variant)
- Other Motorola 8710-series SCR components in similar ratings
- Equivalent 25V/20A SCR components in TO-3 package (verify pinout before substitution)
Works With
- Standard discrete circuit design practices
- Industrial control and power switching topologies
- Legacy industrial automation systems
- TO-3 package heatsink mounting systems
