STK672-430A-E

Overview

The STK672-430A-E is a fully integrated two-phase stepping motor driver manufactured by onsemi. It utilizes a unipolar power MOSFET parallel output configuration to drive stepper motors. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum collector current of 1.7 A with a maximum collector-emitter voltage of 45 V. Designed for through-hole installation in a SIP package, it features a typical switching frequency of 47 kHz and an operating temperature range extending up to +150 °C.

Feature Summary

• Fully integrated two-phase stepping motor driver architecture
• Unipolar power MOSFET parallel output configuration
• High thermal stability supporting elevated operating temperatures

Applications

• General-purpose stepper motor control systems
• Industrial automation equipment requiring single-phase or two-phase motor drives
• Embedded motion control applications utilizing unipolar stepper motors

Procurement Notes

Verify component status as the STK672-430A-E is listed as no longer manufactured. Confirm availability through authorized distributors or surplus channels. Ensure compatibility with existing system designs before sourcing obsolete inventory. Check for potential tariff implications if shipping to specific regions such as the United States. Validate package integrity upon receipt.

Selection Notes

Select this component for legacy designs requiring a monolithic solution for two-phase unipolar stepper motors. Consider the SIP package constraints and through-hole mounting requirements during PCB layout. Evaluate the 1.7 A current limit against specific motor load demands. Assess thermal management needs given the high maximum operating temperature rating. Verify that the 4.75 V to 5.25 V supply range matches the system power architecture.

Part Context

The STK672 series represents a family of stepping motor drivers from onsemi, formerly SANYO Semiconductor. These components are designed to simplify motor control circuitry by integrating power stages and logic into a single package. The STK672-430A-E specifically addresses two-phase unipolar applications, offering a compact alternative to discrete driver solutions in industrial and consumer electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is obsolete, engineers must evaluate equivalent modern stepper motor drivers from onsemi or other manufacturers that match the required voltage, current, and package specifications.