Part Number |
QB210T |
Manufacturers |
BitParts |
Logo |
|
Description |
Normally-closed Switch |
Datasheet |
QB210T Datasheet (PDF) |
QB210T
INC.
QBAR ® NORMALLY-CLOSED SWITCH
DESCRIPTION
QBAR® ICs provide a 3-terminal semiconductor switch that functions as: • a solid-state normally-closed switch • a non-inverting digital transistor • a solid-state replacement for a normally-closed, non-isolating relay. QBAR® ICs do not require a separate power supply lead. This makes possible: • simplified control wiring • replacement of normally-closed D.C. relays with highly reliable solid-state devices • improved fail-safe performance in the event of lost control power, severed or shorted control wires. 3 AMPERES 20 VOLTS TO-220 package PIN
1 2 3 4 INPUT GND OUTPUT GND 3 2 1
4
QBAR SWITCH SYMBOL
FUNCTIONAL SCHEMATIC
OUTPUT
FUNCTION TABLE INPUT HI SWITCH STATE
(OUTPUT-TO-GND)
OUTPUT INPUT
OFF ON ON
GND
INPUT (CMOS or TTL)
LO OPEN
TYPICAL APPLICATIONS
ALARM SWITCH
+20V Warning indicator, cooling fan, brake actuator
PROTECTION OF FRAGILE OR TRIGGER DEVICES
+12V
POWER SUPPLY EFFICIENCY BOOST
+5V REGULATOR
+5V REGULATO.