H11C4

Triac, SCR Output Optoisolators Overview

The H11C4 is a single-channel Triac and SCR output optocoupler manufactured by onsemi. It features a PhotoSCR output type with an isolation voltage of 5300 Vrms. The device supports a forward current of 60 mA and has a forward voltage of 1.2 V. Power dissipation is rated at 1 W, with an off-state output voltage (VDRM) of 400 V. Maximum continuous output current is 300 mA, and the maximum trigger current is 11 mA. It operates within a temperature range of -55°C to +100°C and is housed in a PDIP-6 package without a zero-crossing circuit.

Triac, SCR Output Optoisolators Feature Summary

• Provides electrical isolation via a PhotoSCR output for reliable switching control
• Delivers high insulation capability with 5300 Vrms isolation voltage rating
• Designed for through-hole mounting in standard PDIP-6 packages

Triac, SCR Output Optoisolators Applications

• Industrial motor drive control circuits
• Solid-state relay interfaces
• AC power switching applications

Triac, SCR Output Optoisolators Procurement Notes

The H11C4 is officially listed as obsolete and no longer manufactured by onsemi. Procurement should focus on identifying verified substitute components from the manufacturer's approved replacement list. Verify that any alternative part meets the required isolation voltage, output current, and package specifications to ensure system compatibility and safety compliance.

Triac, SCR Output Optoisolators Selection Notes

Select this component for designs requiring robust isolation between control logic and high-voltage AC loads. Ensure the application does not exceed the 400 V off-state voltage or 300 mA continuous output current limits. Consider thermal management due to 1 W power dissipation. Verify that the absence of a zero-crossing circuit aligns with the specific switching requirements of the target load.

Triac, SCR Output Optoisolators Part Context

The H11C4 belongs to the H11C1 series of Triac and SCR output optocouplers from onsemi. This family is designed for general-purpose isolation applications where high voltage blocking and reliable triggering are essential. The device utilizes a photo-SCR architecture to handle AC loads effectively.

Triac, SCR Output Optoisolators Replacement Considerations

The H11C4 is marked as obsolete. DigiKey lists similar available substitutes. Users must verify technical equivalence, particularly regarding the 5300 Vrms isolation rating and 400 V VDRM specification, before integrating any alternative component.