STMICROELECTRONICS DB3TG DIAC Trigger Diode, 30-34V, DO-35

The STMICROELECTRONICS DB3TG is a two-pin DIAC (Bidirectional Trigger Diode) designed to function as a precise, fixed-voltage reference device. This solid-state component is essential for simplifying gate control in circuits utilising triacs, providing a reliable switching threshold. Its primary role is to conduct current once a specific breakover voltage is exceeded, making it an ideal starting element in applications such as fluorescent lamp ballasts.

Engineered for stability, the DB3TG offers a consistent trigger point, which helps in creating robust and predictable control circuits. It features a low leakage current, ensuring minimal power loss when in the off state, and a fast rise time for responsive switching performance. The through-hole mounting (THT) design facilitates secure and straightforward installation on printed circuit boards (PCBs).

Key Specifications & Features

• Device Type: DIAC (Bidirectional Trigger Diode)
• Breakover Voltage Range: 30V (Min) to 34V (Max)
• Max Breakover Current: 15µA
• Low Leakage Current: 10µA
• Fast Switching: 2µs rise time
• Package/Case: DO-35 glass axial-lead package
• Pin Count: 2 pins
• High-Temperature Operation: Suitable for environments up to 125°C
• Mounting Style: Through Hole

With its compact DO-35 package and reliable performance, the DB3TG is a fundamental component for designers and engineers building efficient and controlled AC power circuits.