FOD8343T

Isolators - Gate Drivers Overview

The FOD8343T is a high-speed gate drive optocoupler manufactured by onsemi, designed for driving medium-power IGBTs and MOSFETs. It features a maximum peak output current of 4.0 A and utilizes a push-pull output configuration. The device operates with a forward current of 10 mA and a forward voltage of 1.5 V. Key timing parameters include a rise time of 38 ns and a fall time of 24 ns. It provides an insulation voltage of 5000 Vrms and supports a reverse voltage of 5 V. Power dissipation is rated at 500 mW. The component functions within a temperature range of -40°C to +100°C and is housed in a stretched body SOP-6 package.

Isolators - Gate Drivers Feature Summary

• Delivers 4.0 A peak output current for direct gate drive applications
• Provides high-speed signal transmission with nanosecond switching times
• Ensures electrical isolation with 5000 Vrms insulation capability

Isolators - Gate Drivers Applications

• Motor control inverter circuits
• High-performance power system switching drivers
• IGBT and MOSFET gate drive interfaces

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix 'T' corresponds to the tube packaging format rather than tape-and-reel variants like 'TR'. Confirm that the SOP-6 stretched body package dimensions align with the target PCB footprint requirements. Ensure the 5000 Vrms isolation rating meets the safety standards of the intended application environment. Cross-reference the 10 mA forward current requirement with the driving source capabilities to guarantee proper logic level interfacing without exceeding limits.

Isolators - Gate Drivers Selection Notes

Select this component when a 4.0 A peak current drive is required for medium-power semiconductor switches. The high-speed characteristics make it suitable for applications demanding fast switching transitions. Consider the SOP-6 surface mount package for space-constrained designs. Verify that the operating temperature range of -40°C to +100°C covers the environmental conditions of the final assembly. Compare against lower current variants if the load does not require full 4.0 A capability.

Isolators - Gate Drivers Part Context

The FOD8343T belongs to the FOD8343 series of gate drive optocouplers from onsemi. This series is engineered specifically for isolating control signals from high-voltage power stages. It serves as a critical interface between low-voltage logic controllers and high-power switching devices. The family includes related parts with varying current ratings, such as the FOD8342, which offers lower output current capabilities for different power levels.

Isolators - Gate Drivers Replacement Considerations

The FOD8342T is a related part within the same product family but offers a 3.0 A output current instead of 4.0 A. Verify if the reduced current capacity of the FOD8342T is sufficient for the specific load requirements before substitution. Both parts share similar package types and speed characteristics.