Overview
The Motorola MCR649P-2 is a high-performance silicon controlled rectifier (SCR) thyristor designed for industrial switching and power control applications. Housed in a rugged TO-3 metal can package, this device delivers dependable AC and DC switching with a reverse blocking voltage rating of 50V and a forward current rating of 12.7A. This pack of 4 units provides economy and convenience for technicians, system integrators, and maintenance professionals who need a proven thyristor solution for power circuits.
Key Features
- 50V reverse blocking voltage (VRRM) rating for reliable overvoltage handling
- 12.7A forward current capacity in robust TO-3 metal can package
- Trusted Motorola semiconductor quality for industrial use
- Gate-triggered silicon controlled rectifier suitable for AC and DC applications
- Pack of 4 units—economical for inventory and production needs
Technical Specifications
- Part Number: MCR649P-2
- Device Type: Silicon Controlled Rectifier (SCR) Thyristor
- Reverse Blocking Voltage (VRRM): 50V
- Forward Current Rating (IT): 12.7A
- Package: TO-3 Metal Can, 3-pin
- Manufacturer: Motorola
- Quantity per Pack: 4 units
- Pin Configuration: Anode, Gate, Cathode + mounting tab
Typical Applications
- Motor control and soft-start circuits
- AC power switching and phase control
- DC chopper and converter circuits
- Heater and lighting load control
- Industrial machinery and equipment automation
- Backup systems and battery charger applications
Compatibility & Replacements
Compatible With
- Industrial control circuits requiring 50V SCR switching
- Power electronics platforms using three-terminal thyristors
- Gate-triggered thyristor control systems
- Legacy Motorola/NXP semiconductor designs
Replaces / Drop-In Replacement For
- MCR649P-1 (verify gate and mounting specifications for your application)
- Other equivalent 50V, 12.7A TO-3 SCR devices (verify pinout and thermal characteristics)
Works With
- Gate driver circuits and pulse transformer networks
- Phase control and dimming applications
- Industrial PLCs and automation controllers via relay or solid-state output interfaces
- Analog gate bias and PWM control systems
