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DB3 trigger diode (Diac) is a bidirectional diode which has a two-terminal with asymmetric conductance. It can be used to conduct in both forward and reverse direction. It offers low resistance to current flow in one direction, and high resistance in the other direction. It is a two terminal device so it does not have a gate terminal like Triac to make it start conducting current, so it starts conducting only when applied voltage goes beyond the break-over voltage. DB3 diac is used in rectifier circuits, switching devices, short circuiting protection purposes. The DIACs are used as a trigger device in various applications such as phase control circuits of motor speed control, light dimmers, heat controls, and many other control circuits.
Specifications:
- Breakover Voltage (Vbo): 32V
- Output Voltage (Vo): 5V
- Repetitive Peak On-State Current (Itrm): 2.0A
- Breakover Current (Ibo): 0.100mA
- Total Power Dissipation (Ptot): 150mW
Product Description
When you start using it, the DIAC will be in blocking state and only very small leakage current will flow. Once the applied voltage reaches the breakdown voltage the resistance of the DIAC drops abruptly and it starts conducting which leads to a sharp decrease in voltage across it and the current starts increasing, called the Conduction State. Most of the DIACs will be having the breakdown voltage around 30 Volts. If you want to turn the DIAC off, it will remain in the conducting state until the current reaches the particular value called the holding current, where holding current is the minimum current that required for a device to keep it in the ON state and if the current fall below this level then it DIAC will stop conducting.
Additional Resources
Package Contents
1×DB3 Trigger Diode
Returns Policy
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
1. Damaged During Shipment
If you receive a product damaged during shipment, please notify us within the 3 days of you receive the product, supported by the proper pictures and description. Once our support team accept the return, we will provide a replacement or a complete refund including the return shipping cost.2. Wrong Item Shipped
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
Limitation of Returns
We don't accept the returns for the products damanged by improper use of the product. Moreover we don't accept the return, if the ordered product is not fit for any specific application. Please read the product specifications and datasheet before selecting and ordering a product. Returns are accepted only with 3 days from the date of delivery.Shipping
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