SOP 4 High Voltage Transistor

Features

High isolation 3750 VRMS

CTR flexibility avai

DC input with transistor output

Operating temperature range - 55 °C to 110 °C

REACH compliance

Halogen free

MSL class 1

Regulatory Approvals

UL - UL1577

VDE - EN60747-5-5(VDE0884-5)

CQC - GB4943.1, GB8898

Isolation function: TD351 optical coupling has good electrical isolation and can ensure safe and reliable signal transmission between input and output circuits.

Low power consumption: This optocoupler is designed for low power consumption and is suitable for use in applications where energy conservation is required High-speed response: TD351 has a fast response speed, and the standard NRZ (non-return to zero code) response time is 0.2μs, which makes it suitable for occasions that require fast signal transmission3. Output current capability: The output current can reach 100mA, which provides the possibility to drive larger loads3. Package form: TD351 is usually packaged in SOP8 (Small Outline Package), suitable for surface mount technology (SMT) applications Application areas: It is widely evaluated in fields such as communications, industrial automation, medical devices, etc., such as as signal conversion components in semiconductor communications, and as isolation and signal transmission components in industrial control

TD351 is SOP4 high voltage triode photocoupler, isolation voltage 3750VRMS, withstand voltage 350V,

size 4.4 * 3.6 * 2.1 mm, operating temperature: -55 ° CTO 110 ° C, CTR value 50-600% , mainly used in communication equipment,

programmable controller, signal transmission, industrial control, measuring instruments.

In terms of power management, high-voltage transistors can be used to control the conduction and cutoff of circuits in switch mode power supplies, achieving voltage conversion and stable output. For example, converting input high voltage into low voltage suitable for electronic devices, such as mobile phone chargers, laptop power adapters, and other devices. This is because high-voltage transistors can withstand high input voltages and quickly switch between on and off states, thereby improving power conversion efficiency and reducing energy loss.
High voltage switch application: In some industrial equipment, power systems, or medical devices, it is necessary to control the switching of high voltage. SOP4 high-voltage transistors can be used as high-voltage switches to maintain high reliability and stability under high voltage and current conditions. For example, in the high-voltage motor control circuit of industrial automation or the high-voltage generator circuit of medical equipment, the on/off control of high-voltage circuits is achieved by controlling the conduction and cutoff of transistors.
High voltage amplifier: In audio amplification, power amplification and other circuits, if high voltage signals need to be processed, high voltage transistors can play a role. For example, in high fidelity audio systems, in order to amplify audio signals to drive high-power speakers, high-voltage transistors may be used to construct amplifier circuits to provide sufficient power output to meet the volume and sound quality requirements of the audio system.

SOP4 High Votage Transistors

Package Dimensions 

Recommended Solder Mask 

1.What are the main applications of high voltage coupler?

High-voltage isolation: high-voltage optocoupler can be used in high-voltage control system, high-voltage signal isolation to ensure the stability and security of the system;A/D circuit: high-voltage optocoupler can also be used in a/D circuit, the analog signal into digital signal, and to achieve isolated signal transmission;Replace the transformer: high-voltage coupler can replace the traditional transformer, the realization of high-voltage isolation and transmission circuit.

2.High voltage couplers are useful for what products?

High voltage optocouplers are often used for electrical isolation and high voltage control. Due to the isolated nature of optical signals, high-voltage optocouplers prevent higher voltages at the input end from reaching the output end, thereby avoiding electrical short-circuits between circuits [3] . In the fields of industrial automation, electronic and electrical products, high Voltage Optocoupler is widely used in line receiver, telecom equipment, CMOS-LSTTL-TTL interface, broadband analog coupling, pulse transformer replacement, computer peripheral interface and other fields.

3.Precautions for using high-voltage optocouplers?

Ensure that the input signal line is isolated from the optocoupler to protect it from external interference.Choose a high-voltage optocoupler with high isolation voltage to protect the circuit from the influence of high voltage.

4.The meaning of high-voltage optocoupler?

High voltage optocoupler refers to a optoelectronic coupling device that can withstand high voltage. Optocouplers can provide excellent safety protection, even if external equipment malfunctions or input signal lines are short circuited, they will not damage the instrument.

5.What is the minimum packaging and withstand voltage of high-voltage optocouplers?

The minimum packaging for high-voltage optocouplers is a plate of 3000PCS, packaged in small volume coils, with an actual voltage resistance of 350V. 

6.The concept and basic principles of sop4 high voltage transistor

A high voltage transistor is a transistor that can operate in a high voltage environment. SOP4 is a packaging form, SOP (Small Outline Package), which is a small outline package. SOP4 means that this transistor adopts the specific packaging form of SOP4. The basic principle of a transistor is to control the output current by controlling the input current (for bipolar transistors) or voltage (for field effect transistors), thereby achieving signal amplification, switching and other functions. Transistors operating in high-voltage environments require special structural and material properties to withstand high voltages, such as thicker insulation layers, special doping processes, etc., to prevent the transistors from being damaged by breakdown. However, based only on the name "SOP4 high-voltage transistor", it is difficult to determine whether it is a bipolar transistor or a field-effect transistor. Different types of transistors have different working principles and characteristics.

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