OPB200 optical switch features wider slot
(5.1mm/.200”) for non-contact sensing…
OPTEK Develops Low-Profile Slotted Optical
Switch for
Non-contact Interruptive Sensing Applications
Carrollton,
TX:
Providing machine and
automation design engineers with a reliable means of non-contact
interruptive object sensing, TT electronics OPTEK Technology has developed
a low-profile slotted switch designed with a wider slot to accommodate
more applications. Designated the OPB200, the optically-triggered switch
contains an 890nm infrared LED and a phototransistor paired in an opaque
plastic housing.
“By adapting the design of this switch to include a wider sensing gap and
a lower board-mounted profile, we’ve expanded the range of applications
where engineers can employ non-contact switching,” said Roland Chapa, vice
president of optoelectronic integrated solutions for OPTEK Technology. “It
is ideal for most types of machine automation circuits, especially for
assembly line automation and machine safety/security applications.”
When no object is present in the slot, the output phototransistor conducts
current to maintain the circuit. When an object enters the slot and blocks
the beam of infrared light from the LED, the output switches to the OFF
state to interrupt the circuit. The device housing is constructed of
opaque injection-molded plastic to minimize the sensitivity of the
assembly’s optical components to ambient visible and near-infrared light,
thus enhancing performance.
The OPB200 switch exhibits a forward voltage of 1.7V (max) @IF = 20mA;
with a reverse current of 100µA (max) @VR = 2V. Collector-emitter
breakdown voltage is 30V (min) @IC = 1mA; with emitter-collector breakdown
voltage of 5V (min) @IE = 100µA. Collector dark current is 100nA (max).
Collector-emitter saturation voltage is 0.4V (max); and the on-state
collector current varies from 1mA (min) to 6mA (max). Operating
temperature range is from -40°C to +85°C.
The OPB200 slot measures 0.200”/5.1mm wide, with a depth of 0.320”/8.1mm,
and the overall board-mounted profile of the device is 0.400”/10.16mm.
Lead length is 0.425” with spacing of 0.400”.
For franchised volume pricing for the OPB200,
please access the Web site at
www.nrcelectronics.com or contact NRC’s
sales office at 561-241-8600.
Quantities
are 1,000. Lead time, if stock is not available, is from 8 to 10 weeks.
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561-241-8600
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