AVS08CB

$2.10

Description：TRIAC INT TRIGGER 500V 5A TO220
Series：-

SKU:506ad416523e Category: TRIACs Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：TRIAC INT TRIGGER 500V 5A TO220
Series：-
Mfr：STMicroelectronics
Package：Tube
Triac Type：Internally Triggered
Voltage - Off State：500 V
Current - On State (It (RMS)) (Max)：5:00 AM
Voltage - Gate Trigger (Vgt) (Max)：-
Current - Non Rep. Surge 50, 60Hz (Itsm)：65A, 70A
Current - Gate Trigger (Igt) (Max)：-
Current - Hold (Ih) (Max)：-
Configuration：Single
Operating Temperature：-10°C ~ 125°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-220-3
Supplier Device Package：TO-220
Grade：-
Qualification：-

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AVS08CB

Overview

The AVS08CB is a TO-220AB packaged TRIAC component within the STMicroelectronics AVS08 automatic voltage switch kit, designed for SMPS applications under 200W. It features a repetitive peak off-state voltage (VDRM) of ±500 V and an RMS on-state current (IT(RMS)) of 5 A at a case temperature of 100°C. The device supports a non-repetitive surge peak on-state current of 70 A for 8.3 ms. Thermal resistance from junction to case is 5.4 °C/W for DC conditions. The TRIAC works in conjunction with the AVS1BCP08 controller to provide automatic mains voltage selection between 110V and 220V AC inputs.

Feature Summary

Optimized gate sensitivity and dynamic parameters to reduce supply resistor losses and enhance disturbance immunity.
Designed specifically for integration with the AVS1BCP08 controller in automatic mains selector circuits.
Uninsulated package construction suitable for thermal management in compact power supplies.

Applications

Automatic mains voltage selectors for Switching Mode Power Supplies (SMPS) rated below 200 W.
Power supplies requiring compatibility with both 110V and 220V AC input lines.
Equipment operating at 50/60 Hz full frequency compatibility.

Procurement Notes

Verify that the specific order corresponds to the uninsulated TO-220AB TRIAC variant (AVS08CB) rather than the insulated version (AVS08CBI) or the controller unit (AVS1BCP08). Confirm the package marking matches 'AVS08CB' to ensure correct electrical isolation characteristics for the intended circuit design.

Selection Notes

Select this component when designing an automatic voltage switching system for low-power SMPS units. Ensure the thermal design accommodates the specified junction-to-case thermal resistance values. Verify that the system requires the specific triggering pulse train and parasitic filter features provided by the paired AVS1BCP08 controller for proper operation.

Part Context

The AVS08CB serves as the power switching element in the AVS08 kit, which also includes the AVS1BCP08 controller. While the controller manages voltage detection and mode selection logic, the AVS08CB handles the high-current switching duties. This division of labor allows for optimized performance in automatic 110/220V AC selection systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult STMicroelectronics for alternative components that match the ±500 V VDRM and 5 A IT(RMS) specifications within a TO-220AB package.

FAQ

What is the maximum repetitive peak off-state voltage for the AVS08CB?

The maximum repetitive peak off-state voltage (VDRM) is ±500 V.

How does the AVS08CB handle thermal dissipation?

The device has a junction-to-case thermal resistance (Rth j-c) of 5.4 °C/W for DC conditions and 4.0 °C/W for AC conditions at 50Hz with a 360° conduction angle.