CNY172SM

Output Type:	Transistor with Base
Supplier Device Package:	6-SMD
Package / Case:	6-SMD, Gull Wing
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 100°C
Vce Saturation (Max):	400mV
Current - DC Forward (If) (Max):	60mA
Voltage - Forward (Vf) (Typ):	1.35V
Current - Output / Channel:	50mA
Voltage - Output (Max):	70V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	4µs, 3.5µs (Max)
Turn On / Turn Off Time (Typ):	2µs, 3µs
Current Transfer Ratio (Max):	125% @ 10mA
Current Transfer Ratio (Min):	63% @ 10mA
Voltage - Isolation:	4170Vrms
Number of Channels:	1
Part Status:	Active
Packaging:	Tube

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Introduction To Optoisolators – Transistor, Photovoltaic OutputOptoisolators are electronic components that electrically isolate input/output signals from each other. In other words, they allow signals to go in one direction without any interference or power coupling the other direction. The most commonly used type of optoisolators are those that use transistors or photovoltaic output devices, which form the basis of this article. CNY172SM Application Field and Working PrincipleThe CNY172SM is a fast current transfer optoisolator made by TE Connectivity, often used in telecommunications, computing, and other automated systems. It comprises of a photodiode, two transistors, and an LED (light emitting diode) encased in an hermetically sealed, 8-lead surface mount package. The basic operating principle involves the LED being illuminated with current, which causes photons to be released in the form of light. This light is then detected by the photodiodes, which produce an electrical current in response. This electrical current is then amplified by the two transistors, and outputted at the optoisolator’s output port.In addition to its highly reliable current transfer capabilities, the CNY172SM also provides several other impressive features, such as high surge current capability, current transfer ratio of 0.45 minimum, and guaranteed high isolation resistance (free from internal arcing) for up to 50 years. It also provides a wide open-collector voltage, with a maximum of 7.5 volts, making it suitable for most operating conditions. Furthermore, the CNY172SM is designed with an inherent reverse polarity protection feature, preventing damage from incorrect wiring. It has a wide operation temperature range of -55°C to +125°C, and a peak current rating of 150mA.The Advantages of Optoisolators Optoisolators are incredibly useful components to have in electrical engineering or embedded systems applications due to their ability to reduce interference from EMI and Power surges. They provide many benefits and can be used in a wide range of applications, including signal isolation, data transmission, current and voltage level conversion, and the protection of connected circuits from potential damage.Optoisolators are extremely reliable and not prone to failure. This is because optoisolators are completely isolated from one another and are powered by discrete physical electrical current. This type of isolation offers superior stability and accuracy when compared to mechanical relays, making optoisolators the preferred choice in many applications. Another advantage of optoisolators is their low power requirements. The majority of these devices consume only milliwatts of power, making them a cost-efficient choice when trying to save on power usage. Furthermore, their very low power consumption results in fewer heat loss, making them an excellent choice for applications in a confined space or in environments that need temperature control.ConclusionOptoisolators – Transistor, Photovoltaic Output are a versatile, reliable and cost-efficient choice for isolator applications in embedded systems or electrical engineering. The CNY172SM, in particular, is able to provide input/output signals with electrical isolation, reverse polarity protection, a wide open-collector voltage range and long-term isolation resistance at an economical price. Ultimately, regardless of how an automated system is designed, optoisolators are one of the most dependable device for providing electrical isolation between parts.

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