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 |
| KL2501D |  |
DIP4 | 6.5x4.58x3.5 | 1.2 | 80 | 0.3 | 5 | 150~300 | 3 | 5 | - | - | -55 | +110 | 5000 |  |
| KL2501Q | |
DIP4 | 6.5x4.58x3.5 | 1.2 | 80 | 0.3 | 5 | 100~200 | 3 | 5 | - | - | -55 | +110 | 5000 | |
| KL2501K | |
DIP4 | 6.5x4.58x3.5 | 1.2 | 80 | 0.3 | 5 | 300~600 | 3 | 5 | - | - | -55 | +110 | 5000 | |
| KL2501L | |
DIP4 | 6.5x4.58x3.5 | 1.2 | 80 | 0.3 | 5 | 200~400 | 3 | 5 | - | - | -55 | +110 | 5000 | |
| KL2501W | |
DIP4 | 6.5x4.58x3.5 | 1.2 | 80 | 0.3 | 5 | 130~260 | 3 | 5 | - | - | -55 | +110 | 5000 | |
| KL2501H | |
DIP4 | 6.5x4.58x3.5 | 1.2 | 80 | 0.3 | 5 | 80~160 | 3 | 5 | - | - | -55 | +110 | 5000 | |
| KL2501N | |
DIP4 | 6.5x4.58x3.5 | 1.2 | 80 | 0.3 | 5 | 80~600 | 3 | 5 | - | - | -55 | +110 | 5000 | |
| KL817LT | |
DIP4 | 6.5x4.59x3.5 | 1.3 | 80 | 0.3 | 0.1 | 50~600 | 8 | 12 | - | - | -55 | +110 | 5000 | |
| KL817HC | |
DIP4 | 6.5x4.59x3.5 | 1.2 | 80 | 0.35 | 5 | 200~400 | 6 | 8 | - | - | -55 | +125 | 5000 | |
