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 |
| KL3H7U |  |
SSOP4 | 4.4x2.70x2.0 | 1.3 | 60 | 0.4 | 0.5 | 50~600 | 8 | 10 | - | - | -40 | +125 | 3750 |  |
| KL1010 |  |
LSOP4 | 7.6x3.62x2.2 | 1.45 | 80 | 0.3 | 5 | 50~600 | 2 | 3 | 4 | 3 | -55 | +110 | 5000 | |
| KL3H7H | |
SSOP4 | 4.4x2.70x2.0 | 1.2 | 80 | 0.3 | 10 | 40~80 | 5 | 3 | - | - | -55 | +110 | 3750 | |
| KL3H7L | |
SSOP4 | 4.4x2.70x2.0 | 1.3 | 80 | 0.3 | 0.1 | 50~600 | 8 | 12 | - | - | -55 | +110 | 3750 | |
| KL3H7 | |
SSOP4 | 4.4x2.70x2.0 | 1.2 | 80 | 0.2 | 5 | 50~600 | 5 | 3 | - | - | -55 | +110 | 3750 | |
| KL357NU |  |
SOP4 | 4.4x4.1x2.0 | 1.3 | 60 | 0.35 | 0.5 | 50~600 | 3 | 4 | - | - | -40 | +125 | 3750 | |
| KL3H4 | |
SSOP4 | 4.4x2.70x2.0 | 1.2 | 80 | 0.2 | ±1 | 20~300 | 18 | 18 | - | - | -55 | +100 | 3750 | |
| KL357NH | |
SOP4 | 4.4x4.1x2.0 | 1.2 | 80 | 0.3 | 5 | 50~600 | 6 | 8 | - | - | -55 | +125 | 3750 | |
| KL357NL | |
SOP4 | 4.4x4.0x2.0 | 1.3 | 80 | 0.3 | 0.1 | 50~600 | 8 | 12 | - | - | -55 | +110 | 3750 | |
