I believe that many rookies who have just contacted the optoelectronic components are not very familiar with the classification of optocouplers. Let's take a look at the engineers of Chaoyi Electronics. Engineers say that because of the variety and types of optocouplers, there are more than a thousand models in the optoelectronic DATA manual, which can usually be classified as follows:
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First, according to the package form, can be divided into coaxial type, dual in-line type, TO package type, flat package type, chip package type, and fiber transmission type.
Second, according to the optical path, it can be divided into external optical path optocoupler (also known as photoelectric intermittent detector) and internal optical path optocoupler. The external optical path photocoupler is further divided into a transmissive type and a reflective type photocoupler.
Third, according to the output form, can be divided into:
1. NPN triode output type, including AC input type, DC input type, complementary output type, etc.
2, photosensitive device output type, including photodiode output type, phototransistor output type, photocell output type, optical thyristor output type.
3, logic gate circuit output type, including gate output type, Schmitt trigger output type, three-state gate circuit output type.
4, Darlington transistor output type, including AC input type, DC input type.
5, low conduction output type (output low level of millivolts).
6, power output type (IGBT / MOSFET output).
7, optical switch output type (on-resistance small 10Ω).
4. According to the speed, it can be divided into low-speed photocoupler (phototransistor, photocell and other output type) and high-speed optocoupler (photodiode with signal processing circuit or photosensitive integrated circuit output type).
5. According to the transmission signal, it can be divided into digital optocoupler (OC gate output type, totem pole output type and tri-state gate circuit output type, etc.) and linear optocoupler (can be divided into low drift type, high linear type) , wideband type, single power type, dual power type, etc.).
Sixth, according to the isolation characteristics, can be divided into ordinary isolation optocouplers (general optical glue potting less than 5000V, air seal less than 2000V) and high-voltage isolation optocouplers (can be divided into 10kV, 20kV, 30kV, etc.).
7. According to the working voltage, it can be divided into low power supply voltage type photocoupler (generally 5~15V) and high power supply voltage type photocoupler (generally greater than 30V).
Eight, according to the channel, can be divided into single-channel, dual-channel and multi-channel optocouplers.
Chaoyi Electronics (chaoyi1688.com) acts as the agent for Taiwan Everbright Optocoupler for 14 years, with high quality and low price. The main models of the agent are: EL3063, EL817S1B (TA)-F, EL817MC-F, EL817C-F and other models.
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