The BT138-500 is a high-performance Triac manufactured by NXP Semiconductors, designed to manage AC loads in a variety of applications. This pass-thru silicon device is capable of switching large AC currents with a simple trigger mechanism, making it an essential component in power control systems.

Key Features

• Voltage Capability: The BT138-500 is rated for a maximum repetitive peak off-state voltage (V_DRM) and peak non-repetitive surge voltage (V_DSM) of 500V, making it suitable for mains voltage applications.
• Current Rating: It can handle a continuous on-state current (I_T(RMS)) up to 12A, which allows it to control a wide range of electrical loads.
• High Surge Current: This Triac can withstand a non-repetitive surge peak on-state current (I_TSM) for a short duration, providing robust performance during transient conditions.
• Gate Trigger Current: A minimal gate trigger current (I_GT) is required to switch the device, facilitating the use of microcontrollers or other low-power trigger circuits.
• Isolation: The package provides excellent electrical isolation between the driving circuit and the high-power AC loads.

Applications

The BT138-500 is versatile and can be used in various applications such as:

• Motor control circuits
• Lighting dimmer switches
• Heating regulation systems
• AC power control in domestic and industrial settings

Package and Mounting

Encased in a robust TO-220 package, the BT138-500 is designed for through-hole mounting, which ensures secure mechanical fixation and efficient thermal dissipation. The package includes a tab for heat sinking, which is crucial for maintaining thermal stability during operation.

Reliability and Safety

NXP Semiconductors is known for its commitment to quality and reliability. The BT138-500 conforms to industry standards for performance and safety, ensuring a reliable solution for controlling AC power in a broad range of devices.