A1458 Optocoupler Datasheet !full!

Ensure that the physical traces underneath the optocoupler package maintain adequate separation distance between the primary input side and secondary output side. Mixing high-voltage and low-voltage traces closely defeats the purpose of isolation.

For accurate circuit design, (such as Avago/Broadcom) to obtain the precise tolerances and characteristic graphs for the exact part number (DIP-8 or SMD-8) you are using.

When you locate a PDF datasheet, look for the following sections to ensure the part fits your design requirements: a1458 optocoupler datasheet

Given the popularity of the A1458 series, counterfeit or substandard parts are a risk in the market. Reliable components can be sourced from:

Features a logic gate output, making it directly compatible with TTL and CMOS systems. Ensure that the physical traces underneath the optocoupler

The result: a compact, inexpensive driver that met safety and performance goals — all because Mara treated the A1458 datasheet as more than a sheet of numbers. It became a design checklist: electrical limits, timing, thermal behavior, and safety constraints — the practical guidance that turned a part’s specifications into a working, dependable product.

When reviewing an A1458 datasheet, engineers look closely at specific graphs to calibrate their designs: When you locate a PDF datasheet, look for

To ensure the transistor saturates fully when turned on, we size the pull-up resistor to limit the current well below the max available ICcap I sub cap C , say around 2mA.

| Parameter | Symbol | Rating | Unit | | :--- | :--- | :--- | :--- | | | | | | | Forward Current | IF | 50 | mA | | Peak Forward Current (1µs pulse, 300pps) | IFP | 1 | A | | Reverse Voltage | VR | 6 | V | | Power Dissipation | PD | 70 | mW | | Output (Phototransistor side) | | | | | Collector-Emitter Voltage | VCEO | 80 | V | | Emitter-Collector Voltage | VECO | 6 | V | | Collector Current | IC | 50 | mA | | Collector Power Dissipation | PC | 150 | mW | | Total Device | | | | | Total Power Dissipation | PTOT | 200 | mW | | Isolation Voltage (for 1 min) | VISO | 5000 | Vrms | | Operating Temperature | TOPR | -55 to +110 | °C | | Storage Temperature | TSTG | -55 to +125 | °C |