This is the peak current the DIAC can handle repeatedly in short pulses. For the DB series, this rating is commonly for a pulse duration of 10µs at 100Hz. It is a crucial limitation that dictates the DIAC's ability to drive the gate of a TRIAC.
The voltage across the DIAC decreases as current increases, providing the sharp pulse needed for a TRIAC gate. 4. Typical Applications of the DB2 DIAC
Whether you're designing a dimmer switch, troubleshooting a power control circuit, or selecting components for a new project, this guide will provide you with all the essential information. diac db2 datasheet pdf 14 top
Before we zoom in on the specific DB2 model, it's crucial to understand the fundamentals. DIAC stands for . It is a two-terminal, bidirectional semiconductor switch that only conducts electrical current after its breakover voltage (VBO) has been exceeded.
The DB2 series is closely related to industry-standard models like the DB3 and DB4. It features a glass-passivated structure that offers high reliability and thermal stability. Below are the key engineering metrics typical of this series: Breakover Voltage ( VBOcap V sub cap B cap O end-sub This is the peak current the DIAC can
The is a robust, cost-effective trigger device for any AC phase control circuit. By understanding its 14 top parameters —from breakover voltage (32V) to dv/dt immunity (50 V/µs)—you can design dimmers, regulators, and controllers that operate reliably for years.
When an AC voltage is applied across Terminals 1 and 2, a negligible leakage current ( IRcap I sub cap R The voltage across the DIAC decreases as current
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(Breakover Voltage Range): Specifies the tight tolerance of the switching point for reliable firing. ITRMcap I sub cap T cap R cap M end-sub
. The voltage drop when the device transitions from breakover to an on-state current of 10mA. A higher drop yields a cleaner pulse output.
Phase control in lighting, motor speed, and heaters.