DESCRIPTION
The BRT21, BRT22, BRT23 product family consists of an
optically coupled GaAs IRLED to a photosensitive thyristor
system with integrated noise suppression and zero crossing
circuit.
The thyristor system enables low trigger currents of 1.2 mA
and features a dV/dt ratio of greater than 10 kV/μs and load
voltages up to 800 V.
The BRT21, BRT22, BRT23 product family is a perfect
microcontroller friendly solution to isolate low voltage logic
from high voltage 120 VAC, 240 VAC, and 380 VAC lines and
to control resistive, inductive, or capacitive AC loads like
motors, solenoids, high power thyristors, or TRIACs and
solid-state relays.

FEATURES
• Low trigger current IFT = 1.2 mA
• ITRMS = 300 mA
• High static dV/dt 10 000 V/μs
• Load voltage = 800 V
• Zero voltage crossing detector
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912

APPLICATIONS
• Industrial controls
• Office equipment
• Consumer appliances

AGENCY APPROVALS
• UL 1577
• cUL 1577
• DIN EN 60747-5-5 (VDE 0884-5) available with option 1