Which is better, el817 or pc817

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List of contents for this article:

• 1、What is the difference between optocoupler 817 and 817?
• 2、EL817 and EL 817c and pc817 swap Who is closest
• 3、Help: The difference between EL817 and PC817
• 4、Which is better between optocoupler 621 and 817
• 5、What is the conduction current of el817?
• 6、Differences between pc 817b and el 817b

What is the difference between optocoupler 817 and 817?

1. The difference between optocoupler 816 and 817: The withstand voltage of the output part is different: the withstand voltage of the output part of the PC817 is 35V, and the withstand voltage of the output part of the PC816 is 70V. There is little difference between the other two. Optocouplers are widely used in a variety of electronic equipment.

2. Overall, the EL817 and EL817C are closer than the PC817 because they are both designed based on the same chip. However, no matter which optocoupler is selected, it is necessary to confirm whether its parameters meet the circuit design requirements, and pay attention to whether the pin arrangement and packaging of the device are consistent with the original device.

3. Within the allowable specifications, 817B and 817C can be used interchangeably. These two models are both single-channel optocouplers, and there is no difference in their internal structures. The main difference between the two is the conversion ratio. To make this more clear, a table is provided below that you can review in detail and understand the specific differences. The conversion ratios between 817B and 817C are different, which directly affects their performance in different application scenarios.

4. Optical-electricity conversion. Optocoupler 817B and optocoupler 817c are interchangeable within the allowable specification range. Because they are all single-channel optocouplers, there is no difference in structure. The main difference between optocoupler 817B and optocoupler 817c is reflected in the CTR value. CTR: The minimum value of the ratio of the current of the light-emitting tube and the current of the phototransistor. From the table, we can get that the CTR value of 817B is 130%-260%; while the CTR value of 817C is 200%-400%.

EL817 and EL 817c and pc817 swap Who is closest

To sum up, the EL817 and EL817C are closer to the PC817 when interchanged, but the specific selection still needs to be comprehensively considered based on the circuit design requirements and the device's parameter specifications.

Overall, the EL817 and EL817C are closer than the PC817 because they are both designed based on the same chip. However, no matter which optocoupler is selected, it is necessary to confirm whether its parameters meet the circuit design requirements, and pay attention to whether the pin arrangement and packaging of the device are consistent with the original device.

The same, they are all optocouplers. PC817 is relatively common, and EL817 is produced by Taiwan Yiguang. PC and EL are the shortcodes of their R & D company. For example, there is a power amplifier chip called LM4871 and an XPT4871 developed in Shenzhen. The two are completely universal.

Help: The difference between EL817 and PC817

The main difference between the PC817 and the EL817 is that the manufacturers are different, but their parameters are the same. The following is a detailed explanation of the differences between PC817 and EL817: Manufacturer: PC817: Made by Sharp, Japan. EL817: Although specific manufacturers may vary by brand or series, in this context, the EL817 and the PC817 have the same parameters, implying that they may belong to the same performance level or category, but are produced by different manufacturers.

The same, they are all optocouplers. PC817 is relatively common, and EL817 is produced by Taiwan Yiguang. PC and EL are the shortcodes of their R & D company. For example, there is a power amplifier chip called LM4871 and an XPT4871 developed in Shenzhen. The two are completely universal. An optical coupler (OC) is also known as an optoisolator or optocoupler, referred to as optocoupler.

The EL817 and EL817C are closer relative to the PC817 when interchanged. The following is a specific analysis: Based on chip design: EL817 and EL817C: They are both based on the same chip design, so they are closer in terms of electrical characteristics and performance. PC817: Although the functions are similar, they may be based on different chip designs, resulting in differences in parameter specifications and performance characteristics from the EL817 and EL817C.

The EL81 EL817C and PC817 are three different brands of optocouplers. Although they have similar functions, there may be some differences in pin layout, parameter specifications and performance characteristics. If interchanges are needed, they should be matched according to specific parameter specifications. For example, the maximum working voltage, output type, response time and other parameters of these three components are slightly different, so they can be selected according to needs.

The PC817 is a photocoupler manufactured by Sharp, Japan, and its parameters are the same as those of the EL817. In the midst of the domestic manufacturing downturn, many factories are seeking ways to reduce costs while maintaining product quality. Among them, Taiwan Yiguang's optocoupler has begun to be widely used to replace the PC817 because its price is about 30% cheaper than the PC817. After returning visits to customers, the feedback from customers using Taiwan Yiguang Optocoupler was good, with a favorable rating of 100%.

Which is better between optocoupler 621 and 817

Optocoupler PC817 is good. PC817 output part of the withstand voltage Vce0 is 35V, mainly used in power supply equipment, isolation of high and low voltage purposes. p621 optocoupler signal transmission is stable, if the requirements are not high, it can completely replace PC817.

Optocoupler 817, or Yiguang photocoupler model EL817, is an electronic component that integrates infrared light emitters, receivers and signal processing circuits. The following is a brief introduction to the optocoupler 817: Working principle: When an electrical signal is applied to the light-emitting element LED at the input end, the LED will emit infrared light. This optical signal is then captured by the receiver and converted back into an electrical signal, realizing "electro-optical" conversion and transmission.

Optocoupler 817 parameters: main parameters Luminous wavelength range: visible light band. Transmission speed: Up to 1Gbps. Current transfer ratio: Within the linear range, it can be adjusted according to demand. Isolation voltage: High isolation voltage capability ensures good electrical isolation performance. Input current: It varies depending on the specific model. Output current: It varies depending on the specific model.

What is the conduction current of el817?

1. The on-current of the EL817 optocoupler varies according to the specific model and working conditions. The key parameters are as follows: Common model parameters The continuous forward current of the EL817 standard model is 50mA, while the on-current range of the EL817B model is usually between 130mA and 260mA. For practical applications, you need to refer to the data manual of the specific model. The universal model refers to the PC817 model common to the EL817. Its on-current is generally recommended to be controlled between 5mA and 20mA, and the maximum allowable value is 50mA. Excess may affect the reliability of the device.

2. The on-current range of common optocouplers Universal small-signal optocouplers: For the most commonly used phototransistor optocouplers such as PC81EL817, the typical minimum trigger current is about 1mA, and the rated working current is recommended to be in the range of 5mA ~ 10mA., the minimum trigger current for high-sensitivity models can be as low as 0.5mA.

3. Multifunctionality: Halogen-free structure: The design of the EL817 photocoupler fully considers environmental awareness and meets the halogen-free standard. It contains only copper lead frames, ensuring bromine (Br) content of less than 900ppm, chlorine (Cl) less than 900ppm, and total halogen content (Br+Cl) less than 1500ppm, making it suitable for applications requiring reduced environmental impact.

4. Typical minimum input current parameters of common optocouplers Universal switching optocouplers (such as PC81EL817): The minimum input current of industrial-grade models is about 1mA ~ 3mA, and consumer-grade models can be as low as 0.5mA. However, at this time, CTR attenuation is obvious and is only suitable for driving high-sensitivity small loads. High-sensitivity optocouplers (such as TLP11TLP127): The minimum input current can be as low as 0.1mA, suitable for low-power driving scenarios.

5. It must be greater than the calculated results. Here, you can choose 330 ohms, 470 ohms, 510 ohms, and 1K, which can make the LED light up and drive the transistor inside to conduct.

Differences between pc 817b and el 817b

1. The core difference between PC817B and EL817B lies in the differences in brand and current transfer ratio (CTR), resulting in differences in application scenarios and prices. They are fully pin and package compatible, but the PC 817B has better performance and higher price, and the EL 817B has more cost advantages. Brand and origin PC817B is an original product from Sharp in Japan; EL817B is a replacement model produced by Everlight in China Taiwan.

2. EL81 EL817C and PC817 are three different brands of optocouplers. Although they have similar functions, there may be some differences in pin layout, parameter specifications and performance characteristics. If interchanges are needed, they should be matched according to specific parameter specifications. For example, the maximum working voltage, output type, response time and other parameters of these three components are slightly different, so they can be selected according to needs.

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