A1458 Optocoupler Datasheet [2021] Jun 2026

The A1458 optocoupler family is used across a broad spectrum of industries and functions:

) : Certified protection between 3750 Vrms to 5300 Vrms depending on the exact housing variant.

You need a resistor in series with the LED.

The A1458 is most commonly found in a or an SMD equivalent. Pin 1: Anode (LED Input) Pin 2: Cathode (LED Input) Pin 3: Emitter (Phototransistor Output) Pin 4: Collector (Phototransistor Output) a1458 optocoupler datasheet

The A1458 series is commonly housed in a compact, surface-mount or through-hole DIP-8 package footprint. The layout isolates the sensitive input emitter circuitry from the output detector circuitry using an internal physical gap.

What (3.3V, 5V) are you driving the input with?

The A1458 is characterized by its high common-mode rejection and speed, making it suitable for noisy industrial environments . The A1458 optocoupler family is used across a

According to Broadcom (via Heisener) , this component is built for speed and reliability. Maximum 8 ns ( ), making it suitable for high-speed data. Supply Voltage ( VCCcap V sub cap C cap C end-sub

A standard application circuit for digital signal transmission includes:

Ensures efficient signal reproduction from the input primary side to the output secondary side. 2. Pin Configuration and Package Dimensions Pin 1: Anode (LED Input) Pin 2: Cathode

Operating the device beyond these limits can cause permanent damage. All ratings are specified at an ambient temperature ( TAcap T sub cap A ) of 25°C unless otherwise noted. Input Diode (Emitter) 50 mA Peak Forward Current ( IFPcap I sub cap F cap P end-sub ): 1 A (Pulse width ≤is less than or equal to s, duty cycle = 1%) Reverse Voltage ( VRcap V sub cap R ): 5 V Power Dissipation ( PDcap P sub cap D ): 70 mW Output Phototransistor (Detector) Collector-Emitter Voltage ( VCEOcap V sub cap C cap E cap O end-sub ): 35 V (or up to 80V depending on manufacturing standard) Emitter-Collector Voltage ( VECOcap V sub cap E cap C cap O end-sub ): 6 V Collector Current ( ICcap I sub cap C ): 50 mA Power Dissipation ( PCcap P sub cap C ): 150 mW Total Component Ratings Isolation Voltage ( VISOcap V sub cap I cap S cap O end-sub ): 3,750 Vrms to 5,000 Vrms (AC, 1 minute, R.H. ≤is less than or equal to Operating Temperature ( TOPRcap T sub cap O cap P cap R end-sub ): -55°C to +100°C Storage Temperature ( TSTGcap T sub cap S cap T cap G end-sub ): -55°C to +125°C Lead Soldering Temperature: 260°C for 10 seconds 4. Electrical Characteristics

In environments with heavy machinery, electromagnetic interference (EMI) can ruin data signals. The A1458 "cleans" the signal by transmitting it via light.

If the original component sourced from UTSource or Heisener Electronics is unavailable, cross-reference the datasheet with these alternative part numbers depending on speed and pin-compatibility requirements: Single Channel, High Speed Optocouplers Technical Data

| Pin Number | Name | Description | |------------|-------------|------------------------------------| | 1 | Anode (A) | Positive terminal of the IR LED | | 2 | Cathode (C) | Negative terminal of the IR LED | | 3 | Emitter (E) | Output phototransistor emitter | | 4 | Collector (C)| Output phototransistor collector |