MCR100-008

Overview

The MCR100-008 is a sensitive gate silicon controlled rectifier (SCR) from the MCR100 series, manufactured by onsemi. It is a reverse blocking thyristor designed for high-volume line-powered consumer applications. The device features a peak repetitive off-state voltage of 600 V and an on-state RMS current rating of 0.8 A at 80°C. It supports a peak non-repetitive surge current of 10 A and includes specified minimum and maximum values for gate trigger current, gate trigger voltage, and holding current to facilitate design. The component is housed in a plastic TO-92 package (CASE 29), which is compatible with automatic insertion equipment.

Feature Summary

• Sensitive gate architecture enables triggering by microcontrollers and logic circuits
• Glass-passivated surface ensures reliability and uniformity
• High dV/dt immunity rated at 20 V/µs minimum at 110°C

Applications

• Relay drivers
• Lamp drivers
• Small motor controls
• Gate drivers for larger thyristors
• Sensing and detection circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact shipping configuration. The base part number corresponds to the 600 V variant; suffixes such as 'RL' indicate tape and reel packaging, while others denote bulk or ammo pack formats. Confirm lead style and package compliance requirements prior to procurement to ensure compatibility with assembly processes.

Selection Notes

Select this component when a 600 V blocking capability and 0.8 A RMS current handling are required in a compact TO-92 form factor. Ensure the application circuit accounts for the specified gate trigger parameters, particularly the maximum gate trigger current of 200 µA and voltage of 1.2 V. Verify that the thermal management strategy accommodates the junction-to-ambient thermal resistance of 200 °C/W for reliable operation within the -40°C to 110°C temperature range.

Part Context

This device belongs to the MCR100 series of sensitive gate silicon controlled rectifiers. The series offers various voltage ratings, including 100 V, 200 V, 400 V, and 600 V options. All variants share similar physical dimensions and electrical characteristics regarding current handling and surge capability, differing primarily in their peak repetitive off-state voltage ratings. The series is widely used in cost-sensitive consumer electronics requiring robust thyristor switching.

Replacement Considerations

Compatible replacements include other MCR100 series parts with equivalent voltage ratings, such as MCR100-8G for lead-free versions. Cross-manufacturer equivalents should be evaluated based on matching peak repetitive off-state voltage, on-state RMS current, and package type. Verify gate trigger specifications and thermal characteristics to ensure functional parity in the target application.