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BRT21-H-BRT22M
Optocouplers
BRT21/ 22/ 23Document Number 83690
www.vishay.com
Optocoupler, Phototriac Output, Zero Crossing
Features High Input Sensitivity IFT = 1.0 mA
I TRMS = 300 mA High Static dv/dt 10,000 V/µs Electrically Insulated between Input and
Output circuit Microcomputer compatible Trigger Current
- (IFT < 1.2 mA) BRT22F, BRT23F,
- (IFT < 2 mA) BRT21H, BRT22H, BRT23H
- (IFT < 3 mA) BRT21M, BRT22M, BRT23M Available Surface Mount and on on tape and reel Zero Voltage Crossing detector UL File E52744 System Code "J" Lead-free component Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
Applications Industrial controls
Office equipment
Consumer appliances
DescriptionThe BRT21, BRT22, BRT23 product family consists
of AC switch optocouplers with zero voltage detec-
tors with two electrically insulated lateral power ICs
which integrate a thyrister system, a photo detector
and noise suppression at the output and an IR GaAs
diode input
High input sensitivity is achieved by using an emitter
follower phototransistor and an SCR predriver result-
ing in an LED trigger current of less than 2 mA or 3 mA
(DC). Inverse parallel SCRs provide commutating
dv/dt greater than 10 kV/µs
The zero cross line voltage detection circuit consists
of two MOSFETS and a photodiode.
THe BRT21/ 22/ 23 product family isolates low-volt-
age logic from 120, 230 and 380 VAC lines to control
resistive, inductive or capacitive loads
motors, solenoids, high current thyristers or TRIAC
and relays.
