Q6008L556

Triacs Overview

The Littelfuse Q6008L556 is an 8 Amp bidirectional triac from the Qxx08xHx series, designed for AC switching and phase control. It features a 600 V rated repetitive off-state voltage (VDRM) and operates within a junction temperature range of -40 °C to +125 °C. The device utilizes a sensitive gate with a maximum DC gate trigger current (Igt) of 35 mA and a maximum holding current (Ih) of 35 mA. Packaged in an SMTO-263-2 surface-mount configuration, it offers high dv/dt commutation capability suitable for demanding industrial loads.

Triacs Feature Summary

• Sensitive gate design enabling reliable triggering in Quadrants I and IV for digital control compatibility
• High commutation performance characteristic optimized for circuits requiring robust handling of rapid voltage changes
• Glass-passivated junctions engineered to ensure long-term parameter stability and device reliability

Triacs Applications

• AC solid-state switching relays
• Motor speed controls
• Temperature modulation controls
• Lighting controls

Triacs Procurement Notes

Verify the specific suffix '556' against official Littelfuse documentation to confirm package type and tape/reel specifications. Ensure the selected variant matches the required surface-mount footprint and automated assembly parameters before finalizing procurement orders.

Triacs Selection Notes

Select this component when an 8 A RMS current rating and 600 V blocking voltage are required in a compact SMD form factor. The sensitive gate specification makes it appropriate for direct interface with low-power logic circuits without additional amplification stages.

Triacs Part Context

This part belongs to the Qxx08xHx series of 8 Amp high commutation triacs. These devices are characterized by their ability to handle high dv/dt conditions, distinguishing them from standard triacs in applications involving highly inductive loads or fast-switching environments.

Triacs Replacement Considerations

Cross-reference with other Q6008 variants such as Q6008NH4RP or Q6008RH4 only if pinout compatibility and electrical ratings match exactly. Verify that any substitute maintains the same sensitive gate characteristics and thermal resistance values.