SL5511

Output Type:	Transistor with Base
Supplier Device Package:	6-DIP
Package / Case:	6-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 100°C
Vce Saturation (Max):	400mV
Current - DC Forward (If) (Max):	100mA
Voltage - Forward (Vf) (Typ):	1.23V
Current - Output / Channel:	100mA
Voltage - Output (Max):	30V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	--
Turn On / Turn Off Time (Typ):	20µs, 50µs (Max)
Current Transfer Ratio (Max):	--
Current Transfer Ratio (Min):	25% @ 2mA
Voltage - Isolation:	5300Vrms
Number of Channels:	1
Part Status:	Obsolete
Packaging:	Tube

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Optoisolators, also known as optocouplers, are components which work to isolate two circuits electrically while still allowing electrical signals to pass between them, often at significantly high voltages. One type of optoisolator is the SL5511, which is a transistor, photovoltaic output optoisolator. These components offer a number of advantages over the other types of optoisolators, and are used in a wide variety of applications. SL5511s are manufactured by a surface mount process, which means the component can be soldered directly to a PCB. This makes them ideal for high-density designs and a range of other design applications, such as being used in mobile phones, tablets and other small electronic devices. The working principle of this optoisolator is based on the photovoltaic effect. This is the phenomenon where, when light is shone on a semiconductor material, it can create a voltage. The SL5511 therefore consists of an infrared LED and a photovoltaic cell. The LED emits infrared light which is picked up by the photovoltaic cell, generating a voltage and in turn current, which can be used to trigger a circuit. The SL5511 has a number of applications where it is used to isolate circuits from each other. These include electronic switching circuits, power switching circuits, data processing, and medical applications. In power switching circuits, the SL5511 is often used to control and switch high voltages with small currents. This means that the optoisolator itself does not have to come into contact with high voltages, and therefore there is no risk associated with doing so. Furthermore, the optoisolator does not draw power from the circuit it is controlling, meaning that power reserves are not, reduced every time the circuit is triggered. In data processing applications, the optoisolator can be used to transfer digital data between circuits, or to isolate a circuit from signals from the power-supply cause. This enables the circuit to run with less interference and also improves safety as it eliminates any chance of an electrical shock or shortening of the circuit. Finally, the SL5511 can be used in medical applications to isolate medical equipment from any potential electrical interference from other systems in the area, which could cause the medical equipment to briefly malfunction. The SL5511 has a number of advantages over other types of optoisolators, such as the fact that it can be used in multiple applications and is also small in size. Furthermore, its low cost and relatively low complexity makes it a popular choice for use in a variety of applications. Finally, due to its photovoltaic output, it is able to operate at higher voltages than other optoisolators, making it a desirable option for many applications.

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