Product category:
Optical Filters, Lenses, Gratings etc
News Release from: Optek Technology | Subject: OP570 Series
Edited by the Electronicstalk Editorial
Team on 04 April 2006
Phototransistors takes their lenses
onboard
NPN phototransistors feature an integral lens that enables the devices to operate with higher performance at lower cost.
Providing design engineers with a high-sensitivity infra-red detector capable of fast response times, TT electronics Optek Technology has developed a silicon phototransistor in a miniature surface mount package (2.5 x 2.0mm) with a variety of lead options Designated the OP570 Series, the NPN phototransistors feature an integral lens that enables the devices to operate with higher performance at lower cost
This article was originally published on Electronicstalk on 31 May 2005 at 8.00am (UK)
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NPN phototransistors exhibit fast response times
TT Electronics' Optek Technology has developed a series of NPN silicon phototransistors in 1206 chip packages.
"Incorporating an infra-red-transmissive lens with the phototransistor gives the OP570 Series devices the capability to handle higher collector currents, with a narrower acceptance angle than unlensed devices", said Dave Birtalan, vice president of Optek Technology's components business unit.
"And moulding the lens into the surface mount package eliminates the need for an external lens, reducing overall assembly costs".
According to Birtalan, the OP570 Series NPN silicon phototransistors are being specified in applications such as noncontact position sensing, infra-red data acquisition and detection, machine automation, optical encoders, and reflective and transmissive (interruptive) sensors.
Electrical performance of the OP570 Series NPN phototransistors is characterised at collector-emitter breakdown voltages of 30V, emitter-collector breakdown voltage of 5V, collector current of 20mA and power dissipation of 130mW.
On-state collector current is 2.5mA (minimum), and the collector-emitter dark current is 100nA (maximum).
Optek will also produce devices outside these specifications to meet customer requirements.
The OP570 Series devices are RoHS-compliant, as well as compatible with high temperature (260C) lead free soldering processes.
Operating temperature range is -25 to +85C.
The OP570 Series devices are available with four different lead configurations, and are mechanically and spectrally matched to Optek's OP270 Series 890nm GaAIAs infra-red LEDs.
Typical pricing for the OP570 Series phototransistors starts at $0.23 each in quantities of 2500 pieces, with samples available immediately.
Production quantity lead times, if stock is not available, are from 6 to 8 weeks.
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