EL816(S)(B)(TB)

Overview

The EL816(S)(B)(TB) is a single-element transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an infrared emitting diode optically coupled to a phototransistor detector in a compact surface-mount DIP-4 package. The device provides high isolation voltage of 5000 V rms between input and output with a creepage distance exceeding 7.62 mm. Key electrical parameters include a minimum collector-emitter breakdown voltage of 80 V, maximum forward current of 0.05 A, and maximum on-state current of 0.05 A. It operates within a temperature range of -55 °C to +110 °C and complies with RoHS standards.

Feature Summary

• High isolation voltage capability between input and output circuits
• Compact surface-mount packaging design for space-constrained applications
• Wide operating temperature range suitable for industrial environments

Applications

• Programmable controllers
• System appliances and measuring instruments
• Telecommunication equipment
• Home appliances such as fan heaters
• Signal transmission between circuits of different potentials

Procurement Notes

Verify the specific suffix configuration against the manufacturer datasheet to ensure correct pinout and isolation ratings. Confirm RoHS compliance status and approval numbers (UL, VDE) required for the target market. Check lead time availability as surface-mount variants may have different supply chain dynamics compared to through-hole versions. Ensure the ordering code matches the exact package style and tape-and-reel specifications needed for automated assembly processes.

Selection Notes

Select this component when high isolation voltage and compact form factor are required for signal transmission between isolated circuits. Consider the CTR range and switching speed characteristics relative to the driving circuit requirements. Evaluate the thermal management needs given the operating temperature limits and power dissipation capabilities. Compare alternative packages if board space constraints differ from the standard SMD footprint dimensions specified in the datasheet.

Part Context

The EL816 series comprises transistor output optocouplers designed for general-purpose isolation applications. This specific model represents the surface-mount variant within the broader EL816 family, offering similar electrical performance to its DIP counterpart but in a smaller outline package. The series is widely used in industrial and consumer electronics where reliable galvanic isolation is necessary for noise immunity and safety compliance.

Replacement Considerations

Direct substitutes include other EL816 series variants with compatible pinouts and electrical specifications. Verify that any replacement maintains the same isolation voltage rating and package dimensions to ensure mechanical fit. Cross-reference CTR ranges and switching times to guarantee functional equivalence in the existing circuit design without requiring component value adjustments.