SMDB3:DIAC

Functioning as a trigger diode with a fixed voltage reference, the DB3/DB4 series can be used in conjunction with triacs for simplified gate control circuits or as a starting element in fluorenscent lamp ballasts.

A new surface mount version is now available in SOT-23 package, providing reduced space and compatibility with automatic pick and place equipment.

Key Features

  • VBO : 32V and 40V
  • LOW BREAKOVER CURRENT
Product Specifications
DescriptionVersionSize
DS2125: DIAC2.159 KB
Application Notes
DescriptionVersionSize
AN4564: Is a positive power supply mandatory for my application, or could a negative output work also?1.0384 KB
AN2703: Parameter list for SCRs, TRIACs, AC switches, and DIACS2.599 KB
Technical Notes & Articles
DescriptionVersionSize
TN1173: Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches4.0330 KB
HW Model & CAD Libraries
DescriptionVersionSize
Diacs PSpice model (.lib) and symbols (.olb)2.09 KB
Selection Guides
DescriptionVersionSize
Thyristors, Triacs, AC switches and A.S.D™ selection guide2.01 MB
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityJunction Temperature (°C) (max)ECCN (EU)ECCN (US)Country of Origin
SMDB3SOT23Tape And Reel0.2831000125NECEAR99MALAYSIA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
SMDB3SOT23IndustrialEcopack2md_wu-wspc-sot-wspc-23-wspc-diodes-wspc-serie_crwudb332pc-wspc-(smdb3)-wspc-wcp-wspc-ver2_signed.pdf
md_wu-wspc-sot-wspc-23-wspc-diodes-wspc-serie_crwudb332pc-wspc-(smdb3)-wspc-wcp-wspc-ver2.xml
DIAC DB4
Is a positive power supply mandatory for my application, or could a negative output work also? VIPER16
Parameter list for SCRs, TRIACs, AC switches, and DIACS FLC21
Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches FLC21
Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches DB4
Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches FLC21
md_wu-wspc-sot-wspc-23-wspc-diodes-wspc-serie_crwudb332pc-wspc-(smdb3)-wspc-wcp-wspc-ver2_signed.pdf SMDB3
md_wu-wspc-sot-wspc-23-wspc-diodes-wspc-serie_crwudb332pc-wspc-(smdb3)-wspc-wcp-wspc-ver2.xml SMDB3