CNY17F13S

Output Type:	Transistor
Supplier Device Package:	6-SMD
Package / Case:	6-SMD, Gull Wing
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 100°C
Vce Saturation (Max):	300mV
Current - DC Forward (If) (Max):	100mA
Voltage - Forward (Vf) (Typ):	1.35V
Current - Output / Channel:	50mA
Voltage - Output (Max):	70V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	1µs, 2µs
Turn On / Turn Off Time (Typ):	2µs, 3µs
Current Transfer Ratio (Max):	80% @ 10mA
Current Transfer Ratio (Min):	40% @ 10mA
Voltage - Isolation:	5300Vrms
Number of Channels:	1
Part Status:	Obsolete
Packaging:	Tube

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Optoisolators - Transistor, Photovoltaic Output: CNY17F13S

Today, optoisolators are commonplace devices used in nearly all types of electronic circuits to keep the electrical signals separated and act as an electrical bridge isolating two circuits. The CNY17F13S, a photovoltaic-output optoisolator from Diodes Incorporated, is one of the most widely used optoisolators available today, and is used in a variety of applications that require electrical current transfer with no direct connection.

Technology Overview

The CNY17F13S optoisolator uses a photo-sensitive semiconductor to detect input electrical signals and provide a corresponding output voltage or current. The optoisolator contains an LED emitter, an output phototransistor, and a diode bridge rectifier all in a tiny, space-saving 4-pin package. The phototransistor is typically operated in reverse-active mode, providing the highest input to output isolation levels available, along with high steady-state transfer gain.When the input, anode terminal of the optoisolator is connected to a current source, it triggers the LED within the device and causes the phototransistor to switch on and activate the external load (RL). When current is removed from the anode, the LED goes out and the transistor switches off, which then disconnects the load.

Application Field

The CNY17F13S is widely used in a variety of applications. Common examples include automotive electronics, electronic meters, power supplies, LED drivers, motion control, security systems, motor control, and industrial control. It can also be used as a digital input/output isolator to electrically isolate two separate circuits.Auto engineers use the optoisolator to simplify the circuit designs of motor and lighting controls. For example, the CNY17F13S can be used to interconnect the audio source with an amplifier, serving as the electrical bridge isolating the two components. It can also be used to remotely control the operation of motors in industrial and vehicle control systems.The CNY17F13S is also used to protect electronic circuits from noise, surges, and overvoltage environments. Its high insulation rating helps protect sensitive circuits from damage due to accidental shorts or overloads.

Working Principle

The CNY17F13S works on the principle of photovoltaics, wherein photons from the LED hitting the phototransistor generate electrical signal. This electrical signal is then used to vary the bias voltage of the transistor and control its operation.When current flows through the anode pin, the LED produces photons which are directed at the phototransistor. The phototransistor then gets activated by the photons and provides a voltage which is used to pull the base voltage of the external load high. This in turn activates the output load, typically a transistor, and the output voltage increases.When the current to the anode is decreased or removed, the LED does not generate photons and the phototransistor is not activated, and thus the load is not driven. This protects the circuit from damages due to a high load or an unwanted input.

Conclusion

The CNY17F13S is a widely used optoisolator, allowing electrical signals to be transferred through the isolation of two distinct circuits. It utilizes a photovoltaic principle to convert input current into an output voltage, and then activates the external load. This enables the optoisolator to transfer electrical current with no direct connection. Due to its small size, high insulation rating, and reliability, it is used in a variety of applications, including automotive electronics, industrial control, LED drivers, and power supplies.

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