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 |
| KLQ3H4B |  |
SSOP16 | 4.4x10.28x2.0 | 1.2 | 80 | 0.2 | ±1 | 80~300 | 18 | 18 | - | - | -55 | +100 | 3750 |  |
| KLQ3H4A | |
SSOP16 | 4.4x10.28x2.0 | 1.2 | 80 | 0.2 | ±1 | 50~150 | 18 | 18 | - | - | -55 | +100 | 3750 | |
| KLQ3H4 | |
SSOP16 | 4.4x10.28x2.0 | 1.2 | 80 | 0.2 | ±1 | 20~300 | 18 | 18 | - | - | -55 | +100 | 3750 | |
| KLQ3H7 | |
SSOP16 | 4.4×10.28×2.0 | 1.2 | 80 | 0.2 | 5 | 50~600 | 5(Typ) | 3(Typ) | - | - | -55 | +110 | 3750 | |
