DB3 DO-35 Diac Trigger Diodes
Fuction
Bidirectional Triggering
Conducts in both positive and negative half-cycles without polarity distinction, suitable for AC control circuits.
Precise Voltage Threshold Switching
Uses 32V as the reference to stably trigger power devices (e.g., TRIAC/SCR), enabling on/off control and power regulation of AC loads.
Low Loss & Fast Response
Low leakage current and short rise time, ideal for high-frequency and high-reliability applications.
Overvoltage Protection
Conducts during overvoltage to discharge energy and protect downstream sensitive components.
Product Specifications
Product Dimension
Installation method
● Process Parameters: Solder temperature 250~270℃, wave height adapted to PCB thickness. After inserting the DB3 pins into the PCB pads, the molten solder of the wave soldering completes the soldering.
● Compatibility: The DB3 is an axial through-hole package, and the pin spacing and hole diameter match the standard PCB pads, so it can directly participate in wave soldering with high production efficiency.
● Notes: Ensure the pins are inserted into the pads to a sufficient depth (at least 2/3 of the pin length) to avoid floating and poor soldering; control the conveyor belt speed to prevent component displacement.
Application
Functioning as a trigger diode with a fixed voltage reference, the DB3 can be used in conjunction with triacs for simplified gate control circuits or as a starting element in fluorescent lamp ballasts.
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