DIAC DB3 Trigger Diode Bi-Directional DB3

The DB3 diode is a bidirectional trigger diode, also known as a DIAC. DIAC DB3 Trigger Diode is a two-terminal, non-linear semiconductor device that conducts current in both directions when its breakover voltage is reached. The DB3 diode is typically use in conjunction with triacs to control AC power.

The DB3 diode has a fixed breakover voltage of 32 V or 40 V, depending on the specific part number. Once the breakover voltage is reached, the diode will conduct current until the voltage across it drops below the holding voltage. The holding voltage is typically about 10 V for the DB3 diode.

This DB3 DIAC works by using the principle of negative resistance. When the voltage across the DIAC is below the breakover voltage, the resistance of the DIAC is very high. This means that very little current will flow through the DIAC.

However, when the voltage across the DIAC reaches the breakover voltage, the resistance of the DIAC suddenly drops to a very low value. This allows a large amount of current to flow through the DIAC. The DIAC will continue to conduct current until the voltage across it drops below the holding voltage.

The breakover voltage of the DB3 DIAC is not a precise value. It will vary slightly from diode to diode. The actual breakover voltage of a particular DB3 DIAC can be found by looking at the datasheet for that diode.

The input voltage for the DB3 DIAC can be either AC or DC. However, the DC voltage must be greater than the breakover voltage of the diode. The AC voltage can be any voltage that is within the voltage rating of the diode.

This DB3 DIAC is a reliable and efficient way to control AC power and protect circuits from short circuits.

Features : –
The DB3 is a type of DIAC, which stands for Diode for Alternating Current. Bi-Directional DB3 is a two-terminal, non-linear semiconductor device that conducts current in both directions when its breakover voltage is reached. The DB3 DIAC has a fixed breakover voltage of 32 V or 40 V, depending on the specific part number. Once the breakover voltage is reached, the diode will conduct current until the voltage across it drops below the holding voltage. The holding voltage is typically about 10 V for the DB3 DIAC. The DIAC DB3 trigger diode has a number of benefits, including:

Versatility
Reliable
Efficient
Low cost
Small size
Easy to use
Long lifespan
DIAC DB3 Trigger Diode Specifications : –
The DIAC DB3 trigger diode has a maximum current rating of 10 mA. This means that the DB3 diode can safely carry a maximum current of 10 mA without being damaged. The current that flows through the diode will increase sharply when the voltage across the diode reaches the breakover voltage. here are the specifications of the DIAC DB3 trigger diode:

Breakover voltage: 32 V or 40 V, depending on the specific part number.
Holding voltage: Typically about 10 V.
Current rating: 10 mA.
Voltage rating: 600 V.
Package: SOT-23.