STK621-729-E

Overview

The STK621-729-E is a hybrid integrated circuit designed for three-phase motor drive inverter applications. It integrates control and power stages to support half-bridge operation, providing complementary gate drive signals with programmable dead time via external timing components. The device is classified as obsolete within the manufacturer's portfolio.

Feature Summary

• Integrates control and power stages for three-phase motor drive inverter applications
• Supports half-bridge operation with complementary gate drive signals
• Features programmable dead time through external timing components

Applications

• Three-phase motor drive inverters

Procurement Notes

This component is officially listed as obsolete by onsemi. Procurement must rely exclusively on secondary market distributors or surplus inventory holders. Verify part authenticity and storage history carefully, as availability is not guaranteed through primary channels. No new production units are expected.

Selection Notes

Designers should consider this part only for legacy system maintenance or repair scenarios. Due to its obsolete status, long-term supply continuity cannot be assured. Evaluate alternative modern equivalents from the same family or newer generations that offer improved availability and updated specifications for new designs.

Part Context

The STK621-729-E belongs to the STK621 series of hybrid ICs from onsemi. This series typically combines driver logic with power MOSFETs or IGBTs in a single package to simplify inverter design. The specific model supports half-bridge configurations commonly used in industrial motor control systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult onsemi technical support or authorized distributors for current equivalent recommendations suitable for their specific voltage and current requirements.