Standard axial lead DO-35 glass package for through-hole mounting. Operational Characteristics

): Ranges from , with a typical value of approximately 32V.

Technical details for the DB2 series typically align with standard trigger diacs, focusing on breakover voltage and peak current. Breakover Voltage ( VBOcap V sub cap B cap O end-sub

Typically within 3V , ensuring the DIAC fires at nearly identical voltage levels in both positive and negative AC half-cycles. Repetitive Peak On-State Current ( ITRMcap I sub cap T cap R cap M end-sub ): Supports up to 2.0A for short pulses (e.g., at 120Hz).

+110∘Cpositive 110 raised to the composed with power cap C .

The DB2 behaves like a "transistor without a base". It remains in a non-conductive state until the applied voltage exceeds its specific breakover threshold. Once triggered, its resistance drops sharply (negative resistance characteristic), allowing a pulse of current to flow to the gate of a TRIAC. Datasheet - DB3, DB4, SMDB3 - Diac - STMicroelectronics

The is a bidirectional trigger diode designed primarily for phase control applications, such as lamp dimming and motor speed regulation. Often packaged in a hermetically sealed glass DO-35 case, it provides a stable and symmetrical trigger pulse for thyristors like TRIACs. Key Specifications and Features