Photo Transistor Coupler is a photoelectric coupler composed of a light-emitting diode and a phototransistor. It uses the photoelectric effect and transistor amplification characteristics to achieve optical isolation and transmission of electrical signals, ensuring stable and reliable signals. Photo Transistor Coupler include two categories: Photo Transistor Coupler (AC) and Photo Transistor Coupler (DC).
| Product | Photo | Package | size(LxWxHmm) | VF (V) | BV CEO (Min) (V) | V CE(SAT) (Max) (V) | IF (mA) | CTR (%) | tr (uS) | tf (uS) | ton (uS) | toff (uS) | Topr (Min) (degC) | Topr (Max) (degC) | Viso (Vrms) | File |
| KL357NHA |  |
SOP4 | 4.4x4.1x2.0 | 1.2 | 80 | 0.3 | 5 | 80~160 | 6 | 8 | - | - | -55 | +125 | 3750 |  |
| KL4N38 |  |
DIP6 | 7.1x6.5x3.5 | 1.2 | 80 | 1 | 10 | >20 | - | - | 10 | 9 | -55 | +110 | 5000 | |
| KL4N37 | |
DIP6 | 7.1x6.5x3.5 | 1.2 | 80 | 0.3 | 10 | >100 | - | - | 10 | 9 | -55 | +110 | 5000 | |
| KL4N35 | |
DIP6 | 7.1x6.5x3.5 | 1.2 | 80 | 0.3 | 10 | >100 | - | - | 10 | 9 | -55 | +110 | 5000 | |
| KL4N36 | |
DIP6 | 7.1x6.5x3.5 | 1.2 | 80 | 0.3 | 10 | >100 | - | - | 10 | 9 | -55 | +110 | 5000 | |
| KL4N27 | |
DIP6 | 7.1x6.5x3.5 | 1.2 | 80 | 0.5 | 10 | >10 | - | - | 3 | 3 | -55 | +110 | 5000 | |
| KL4N28 | |
DIP6 | 7.1x6.5x3.5 | 1.2 | 80 | 0.5 | 10 | >10 | - | - | 3 | 3 | -55 | +110 | 5000 | |
| KL4N26 | |
DIP6 | 7.1x6.5x3.5 | 1.2 | 80 | 0.5 | ±10 | >20 | - | - | 3 | 3 | -55 | +110 | 5000 | |
| KL2514 |  |
DIP4 | 6.5x4.58x3.5 | 1.2 | 40 | 0.35 | 5 | 50~200 | - | - | 15 | 15 | -55 | +110 | 5000 | |
