QBLP671-O Optoelectronics

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Introduction
The QBLP671-O is a light emitting diode (LED) for discrete indication. It is designed for applications such as automotive and electrical indicators, warning signals, and status indicators. In this article, we will discuss the application field and working principle of the QBLP671-O.

Application Field
The QBLP671-O is designed to be used as an indicator or indicator lamp. Its primary application field is indicating, warning, and status functions in automotive and other electrical applications. It can be used to indicate the presence or absence of an on/off condition or to indicate a normal or abnormal status. The wide selection of colors available in this discrete LED makes it suitable for many applications.

Construction
The QBLP671-O is an SMD (surface mount device) LED with a domed lens. It is constructed from a transparent heat resistant plastic housing and a red (660nm) LED chip in the center. The LED chip is mounted in the plastic housing on a thermal transfer pad which helps to dissipate the heat generated by the LED. The LED chip is connected to the solder pads on the bottom of the housing.

Specification
The QBLP671-O has a forward voltage of 2.1-2.5 volts, a forward current of 20mA, and a power dissipation of 650 mW. The luminous intensity is 12 mcd and the directivity is 60 degrees. The QBLP671-O is rated for operation in a temperature range of -40C to +85C. The operating life is 10,000 hours.

Working Principle
The QBLP671-O works on the principle of forward biased P-N junction. The LED is activated when a forward bias voltage is applied to the P-N junction. This forward bias causes the electrons to flow from the P side (anode) to the N side (cathode) of the diode, which in turn causes the diode to emit light. The LED’s light output is proportional to the current that passes through it, so the LED will produce more light when a higher current is applied.

Conclusion
The QBLP671-O is a discrete LED suitable for automotive and other electrical applications. Its primary application field is indicating, warning, and status functions. The LED is constructed from a transparent heat resistant plastic housing and a red LED chip in the center. The LED works on the principle of forward biased P-N junction, and its light output is proportional to the current that passes through it.

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