Product overview A bulk pack of 500 DB3 diac trigger devices in DO35 blue tube packaging. Designed for precise and stable triggering of triacs and thyristors in AC control circuits. Suitable for production, , and prototyping where consistent, repeatable performance is required. Key benefits Reliable triggering: DB3 diacs provide consistent breakover behavior for dependable switching of triacs and thyristors. Stable performance: DO35 packaged devices maintain stable characteristics across repeated cycles, reducing variability in phase control applications. Cost effective for volume use: 500 pieces per lot supports assembly runs and spare parts inventory, minimizing procurement frequency. Easy handling and installation: standard DO35 axial package fits common through hole boards and assembly processes. Visual identification: blue trigger tube housing simplifies part recognition during assembly and maintenance. Main features and specifications Model: DB3 diac Package: DO35 axial glass tube, blue appearance Quantity: 500 pieces per lot Function: bidirectional trigger device for initiating conduction in triacs and thyristors in AC circuits Performance: designed for precision triggering and stable operation under typical control conditions Compatibility: suitable for use with a wide range of triacs, thyristors, AC dimmer modules, motor controllers, and timing circuits Practical applications Lighting dimmer modules and lamp controls: provides reliable trigger pulses to triacs for smooth phase angle dimming. Motor speed controllers and small appliance controls: used to initiate conduction in motor drive triacs for simple speed regulation and on off control. and maintenance: replacement parts for consumer dimmers, control boards, and industrial control assemblies where DB3 specification is required. Why choose this part for your projects Consistent behavior across the entire lot helps maintain uniform performance in assemblies. Bulk quantity supports production runs and reduces need for frequent reordering. Standard DO35 form factor ensures compatibility with existing PCB layouts and through hole assembly processes. Ordering note Each lot contains 500 DB3 diacs in DO35 blue tubes. Ideal for electronics manufacturers, shops, and hobbyists needing a reliable supply of trigger diodes for AC control circuits.