HMHA2801B

Output Type:	Transistor
Supplier Device Package:	4-Mini-Flat
Package / Case:	4-SOIC (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 100°C
Vce Saturation (Max):	300mV
Current - DC Forward (If) (Max):	50mA
Voltage - Forward (Vf) (Typ):	1.3V (Max)
Current - Output / Channel:	50mA
Voltage - Output (Max):	80V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	3µs, 3µs
Turn On / Turn Off Time (Typ):	--
Current Transfer Ratio (Max):	260% @ 5mA
Current Transfer Ratio (Min):	130% @ 5mA
Voltage - Isolation:	3750Vrms
Number of Channels:	1
Part Status:	Active
Packaging:	Tube

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Introduction

The HMHA2801B Optoisolator - Transistor, Photovoltaic Output is a four pin photovoltaic output optoisolator with a high input-to-output isolation voltage. It is composed of an infrared LED combined with a photovoltaic output transistor. Featuring low saturation, it ensures reliable current and voltage signal isolation and noise immunity. It has a wide range of applications in various industrial control and communication systems.

Features

• High input-to-output isolation voltage • Low saturation voltage• Wide operating temperature range• High common mode transient immunity• Low input current• Compact, four-pin surface mount package

Applications

The HMHA2801B optoisolator can be widely used in many industrial control and communication systems. It provides input-to-output isolation in systems such as power supplies and switching regulators, DC-DC controllers, and in applications such as AC line monitors, medical system monitoring, and voltage spike suppression.

Working Principle

The HMHA2801B optoisolator works by isolating the signal from the power source. The input of the optoisolator consists of an LED, which converts the incoming electrical signal into an outgoing beam of light. The photovoltaic output transistor then converts the light beam into the necessary output signal required for the system.The LED emits infrared light and the transistor acts as a photosensitive voltage amplifier, amplifying the incoming signal. The output voltage is proportional to the input voltage and the output current is proportional to the input current. The high input-to-output isolation voltage ensures the signals are isolated from each other without loss in quality or accuracy.

Conclusion

In conclusion, the HMHA2801B optoisolator - Transistor, Photovoltaic Output is a four pin photovoltaic output device with a high input-to-output isolation voltage. It is widely used in industrial control and communication systems. The LED converts the incoming electrical signal into an outgoing beam of light, and the photovoltaic output transistor converts the light beam into the necessary output signal required for the system. The optoisolator ensures reliable current and voltage signal isolation and noise immunity, making it an ideal choice for various applications.

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