FODM121BR1V

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Number of Channels:	1
Voltage - Isolation:	3750Vrms
Current Transfer Ratio (Min):	50% @ 5mA
Current Transfer Ratio (Max):	150% @ 5mA
Turn On / Turn Off Time (Typ):	--
Rise / Fall Time (Typ):	3µs, 3µs
Input Type:	DC
Output Type:	Transistor
Voltage - Output (Max):	80V
Current - Output / Channel:	80mA
Voltage - Forward (Vf) (Typ):	1.3V (Max)
Current - DC Forward (If) (Max):	50mA
Vce Saturation (Max):	400mV
Operating Temperature:	-40°C ~ 110°C
Mounting Type:	Surface Mount
Package / Case:	4-SMD, Gull Wing
Supplier Device Package:	4-Mini-Flat

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Optoisolators - Transistor, Photovoltaic Output

Optoisolators are a type of device used to electrically isolate two circuits from one another while still allowing them to transfer signals across the two circuits. They typically use a combination of an LED or laser diode and an optically sensitive device such as a MOSFET, transistor, or photovoltaic cell.The FODM121BR1V is an optoisolator from Fairchild Semiconductor. It is a transistor output photovoltaic optoisolator intended for use in digital systems. It provides 3000Vrms input/output isolation and a low voltage drive capability. It is available in a variety of packages, including a mini DIP and a surface mount package.

Application Field

The FODM121BR1V is suitable for a variety of applications. It can be used in motor control systems, instrumentation, control systems, and medical systems to name a few. In these applications it can be used to enable devices to be controlled from a remote location or at a lower voltage level. It can also be used in difficult to reach locations, for example in hazardous areas or where dust and debris are present. The FODM121BR1V offer superior immunity to electromagnetic interference and an adjustable input threshold to reduce false triggering.

Working Principle

The FODM121BR1V consists of an infrared LED and a photovoltaic cell. The LED emits a beam of infrared light which is converted to an electrical signal by the photovoltaic cell. This signal is then amplified and output from the optoisolator. The photovoltaic cell is adjustable and can be adjusted to sensitize it to a particular wavelength of light. This enables the FODM121BR1V to be used to detect a variety of infrared wavelengths. The LED can be driven by a low voltage which makes it suitable for use in applications where higher voltages are not available. The FODM121BR1V is also very reliable and can withstand high temperature and shock. It is designed to operate over a wide temperature range (-40 to 85° C) and has a 1500Vrms common mode transient immunity.In summary, the FODM121BR1V is an optoisolator suitable for a variety of applications. It can be used to detect infrared wavelengths, provide input / output isolation, reduce false triggering, and provide superior immunity to electromagnetic interference. It is very reliable and can operate over a wide temperature range.

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