H21A3 Isocom, Screw Mount Slotted Optical Switch, Phototransistor Output

  • RS Stock No. 453-0836
  • Mfr. Part No. H21A3
  • Manufacturer Isocom
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

Slotted Optical Switch, H21Ax Series

The H21Ax series from Isocom are a family of photointerrupters. They combine an NPN silicon phototransistor with an IR LED within a polycarbonate package. The package also features mounting tabs for fixing down with screws. With a 3 mm gap, the H21Ax requires an object from opaque to IR to interrupt the connection between the IR LED and sensor.
Suitable applications for the H21Ax slotted interrupters include printers and optoelectronic switches.

Features of the H21Ax slotted interrupters:
IR LED and NPN phototransistor
Single channel
High gain
Opaque polycarbonate package
Ambient light protection
1 mm aperture
3 mm gap from LED and sensor
Moulded mounting tabs for screw fixing

Slotted Optical Switches, Isocom

Attribute Value
Output Device Phototransistor
Number of Channels 1
Typical Rise Time 8µs
Typical Fall Time 50µs
Mounting Type Screw Mount
Number of Pins 4
Dimensions 25.7 x 6.6 x 11.1mm
Height 11.1mm
Length 25.7mm
Maximum Operating Temperature +85°C
Minimum Operating Temperature -25°C
Slot Width 3mm
Width 6.6mm
Series H21A
Operating Temperature Range -25 → +85°C
270 In Global stock for delivery within 4 - 6 working days
Price Each (In a Pack of 5)
MYR 7.598
Per unit
Per Pack*
5 - 20
25 - 95
100 - 245
250 - 495
500 +
*price indicative