One of the standout features of the A1458 is its high noise immunity, boasting a CMR of 50 kV/μs minimum. This makes it highly resistant to transient noise in industrial environments.
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
However, finding a consolidated, detailed explanation of the can be challenging. This article serves as a complete guide to the A1458. We will dissect every section of the datasheet—from absolute maximum ratings to switching characteristics—providing engineers, hobbyists, and students with the knowledge needed to integrate this component effectively. a1458 optocoupler datasheet
When reviewing an A1458 datasheet, engineers look closely at specific graphs to calibrate their designs:
What is the expected of the signals you are isolating? Share public link One of the standout features of the A1458
Its standardized pinout and wide availability make it a go-to component for engineers across industries.
Scenario: Detecting presence of 110V AC line voltage. All ratings are specified at an ambient temperature
If you are ready to put the A1458 on a breadboard or PCB, follow these steps:
Ideal for high-speed data links like RS-232, RS-485, or CAN bus isolation. Replacement and Equivalents
The official datasheet provides the "Absolute Maximum Ratings" and "Recommended Operating Conditions." The following are the key specifications collated for the A1458 (HCPL-A1458/HCPL-1458 series):
The combination of high-speed performance and high voltage isolation makes the A1458 an essential component in several industries: