A1458 Optocoupler Datasheet Jun 2026
Inverter topologies, solar power converters, and variable-frequency motor drives utilize High-Power MOSFETs or IGBTs. The A1458 isolates the high-voltage power stage while sending sharp, distortion-free switching control pulses down to the gate-driver circuit. Single Channel, High Speed Optocouplers Technical Data
Mechanical Note: The distance between the LED and phototransistor inside the A1458 is precisely controlled to ensure a CTR consistency of ±20% from batch to batch.
A good A1458 datasheet will show three standard applications: a1458 optocoupler datasheet
Assume you want a forward current ( IFcap I sub cap F ) of 10mA to ensure a solid CTR.From the datasheet,
Search the manufacturer prefix (e.g., "Sharp A1458" or "Vishay A1458") – the first three letters often reveal the true brand. A good A1458 datasheet will show three standard
) close to the power supply pins of the isolated side to filter out high-frequency switching noise.
: No internal electrical connection. Leave isolated on the PCB layout. Leave isolated on the PCB layout
Top View (SOP-8 / DIP-8) +-------U-------+ Anode | 1 8 | VCC (Supply Voltage) Cathode | 2 7 | VO (Output Signal) NC | 3 6 | VO2 / Enable / NC* GND1 | 4 5 | GND2 (Output Ground) +---------------+ *Note: Internal pin configurations vary slightly by model suffix (e.g., Gate Driver vs. Open Collector). Key Technical Explanations & Parameter Analysis 1. High Speed via Decoupled Photodiode-Transistor Design
| Parameter | Symbol | Min | Max | Unit | |----------------------------|--------|------|-------|-------| | Forward current (LED) | IF | - | 50 | mA | | Reverse voltage (LED) | VR | - | 6 | V | | Collector-emitter voltage | VCEO | - | 80 | V | | Emitter-collector voltage | VECO | - | 7 | V | | Collector current | IC | - | 50 | mA | | Total power dissipation | Ptot | - | 150 | mW | | Isolation voltage (1 min) | VISO | - | 5000 | Vrms | | Operating temperature | Topr | -55 | +110 | °C | | Storage temperature | Tstg | -55 | +125 | °C |
Used in programmable logic controllers (PLCs), sensor interfaces, and robotic systems where high-speed, noise-free logic isolation is crucial.
