DIP 4 High Voltage Darlington Transistor

Features

High isolation 5000 VRMS

CTR flexibility available see order

High collector- emitter voltage (VCEO=350V)
Current transfer ratio (CTR: 1000% min. at IF =1mA, VCE =2V)
High isolation voltage between input and output (Viso=5000 V rms )
Creepage distance >7.62 mm
Operating temperature up to +100°C
Compact small outline package
Pb free and RoHS compliant.
UL approved
VDE approved
SEMKO approved
NEMKO approved
DEMKO approved
FIMKO approved

Applications

Switch mode power supplies

Programmable controllers

Household appliances

Office equipment

Telephone set, telephone exchangers
Sequence controllers
System appliances, measuring instruments
Signal transmission between circuits of different potentials and impedances

In terms of performance, it can replace Everlight EL852, Liteon LTV852, Ctmicro CT852, Sharp PC852/853, Renesas PS2532-1/2533-1/, Toshiba TLP523/626/627.The CTR is 600-7500%, widely used in switch mode power supplies, smart meters, industrial control, measuring instruments, office equipment (copiers), household appliances (air conditioning, fans, water heaters).

DIP 4 High Voltage DarliangtonTransistor

Package Dimensions (Dimensions in mm unless otherwise stated)

Recommended Solder Mask (Dimensions in mm unless otherwise stated) 

1.The What type of optocoupler is TD852?

Darlington optocoupler

Apply to: Communications equipment, Programmable controller, Signal transmission, Industrial control, measuring instruments.

2.TD852 optocoupler characteristics?

Input-output isolation voltage (viso = 5000V MS)

Collector-emission breakdown voltage BV ≥350V.

3.852 Application areas of optical coupling?

Photocoupling (photocoupler) is a kind of electronic element that transmits signals by light, which has isolated effect and is widely used in various electronic devices and systems.852 Optical coupling is a kind of photocoupler with high-speed performance. Its application fields mainly include: Digital circuit and analog circuit: optical coupling has the characteristics of unidirectional transmission of information, wide frequency band, small parasitic feedback, strong noise elimination ability, good anti-electromagnetic interference performance and so on, so it has been widely used in digital circuit and analog circuit. Power electronic equipment: optical coupling plays a key role in isolation and signal transmission in power electronic equipment, such as power system protection, switching power supply, frequency converter, inverter, etc. Communication system: optical coupling is used in the communication system to isolate and transmit signals, such as optical fiber communication, data transmission, network equipment, etc. Industrial control: optical coupling is used in the industrial control system to isolate and transmit signals, such as PLC, DCS, sensors, actuators, etc. Home appliances and smart home: Optical coupling is used in household appliances and smart home products to isolate and transmit signals, such as air conditioners, refrigerators, washing machines, smart lamps, etc. Automotive electronics: Optical coupling is used in automotive electronic systems to isolate and transmit signals, such as engine control, brake system, navigation system, etc. In conclusion, optical coupling is widely used in various fields, providing reliable signal isolation and transmission functions for electronic devices and systems.

4.852 The difference between optical coupling and other optical couplers?

852 Optical coupling is a kind of optical coupler with high speed performance, compared with other optical couplers, it has the following characteristics and differences: Transmission speed: 852 optical coupling has a high transmission speed, suitable for high-speed data transmission and high-frequency signal processing. Other photocouplers may be suitable for low speed or medium speed data transmission. Isolation performance: 852 optical coupling has good electrical isolation performance, which can effectively suppress common mode interference and differential mode interference. Other optical couplers may differ in isolation performance and need to be compared according to the specific model and technical parameters. Operating temperature range: 852 Photocoupling has a wide working temperature range, suitable for a variety of harsh environments. While other optical couplers may be limited in the operating temperature range.

5.Application of 852 Optocoupler in Automotive Electronics?
Signal transmission: In automotive electronic systems, 852 optocouplers are used to transmit signals between circuits of different potentials and impedances. For example, in vehicle communication systems, optocouplers can be used to isolate and transmit data signals, ensuring signal stability and accuracy.
Electrical isolation: The 852 optocoupler provides high isolation voltage (Viso=5000 Vrms) to achieve electrical isolation between input and output in the electrical system. This is crucial for preventing noise interference, protecting sensitive circuits, and ensuring system safety.
Sequential controller: In the sequential control system of automobiles, optocouplers can be used to control the sequence and timing of signals, ensuring the normal operation of the system.
Measuring instruments: In automotive measurement and monitoring systems, optocouplers can be used to isolate and transmit measurement signals, improving the measurement accuracy and stability of the system.
System equipment: In various system equipment of automobiles (such as navigation systems, entertainment systems, etc.), optocouplers can be used to achieve signal transmission and electrical isolation between different modules.

6.What is the difference between high-voltage optocouplers and ordinary optocouplers?

The main difference between high-voltage optocouplers and ordinary optocouplers lies in their design and application.
Design:
High voltage optocoupler: The design purpose of a high voltage optocoupler is to provide electrical isolation in high voltage environments, so its internal structure and material selection have taken into account high voltage tolerance. For example, they may use thicker insulation layers or special packaging techniques to improve their voltage resistance.
Ordinary optocoupler: The design purpose of ordinary optocouplers is to provide electrical isolation in low voltage environments, so their internal structure and material selection mainly consider the efficiency and accuracy of signal transmission.
Application:
High voltage optocoupler: High voltage optocouplers are mainly used for applications that require electrical isolation in high-voltage environments, such as high-voltage power systems, medical equipment, and automotive electronics.
Ordinary optocoupler: Ordinary optocouplers are mainly used for applications that require electrical isolation in low voltage environments, such as communication and control systems, computer peripherals, household appliances, etc.
Parameters:
High voltage optocoupler: The working voltage, isolation voltage, and other parameters of high-voltage optocouplers are usually higher than those of ordinary optocouplers.
Ordinary optocouplers: The CTR, propagation delay time, and other parameters of ordinary optocouplers are usually better than those of high-voltage optocouplers.

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