HCTSM80304BAL-E1

Overview

The HCTSM80304BAL-E1 is a surface mount pulse transformer from the Bourns HCT series, designed for isolation and data interface applications. It features a primary-to-secondary turns ratio of 3:4 and an inductance of 300 µH. The component supports a maximum operating temperature of +125°C and a minimum of -40°C. Key electrical specifications include an ET constant of 11 V/µs and a secondary current rating of 350 mA peak. Physical dimensions are 12.3 mm in length, 10.8 mm in width, and 6.5 mm in height. It utilizes SMD/SMT termination and is available in tape and reel packaging.

Feature Summary

• High clearance and creepage distance design for enhanced safety
• AEC-Q200 qualified for automotive reliability standards
• Integrated isolation and data interface functionality

Applications

• Automotive electronic systems requiring isolated communication
• Industrial control circuits with high voltage isolation needs
• Data bus interfaces in harsh environmental conditions

Procurement Notes

Verify the specific suffix E1 against official Bourns documentation to confirm exact pinout and insulation ratings. Ensure the procurement order matches the required AEC-Q200 qualification level if used in automotive contexts. Confirm that the 3:4 turns ratio aligns with the system's impedance matching requirements before finalizing the purchase order.

Selection Notes

Select this component when a 3:4 step-up or step-down ratio is required for isolated data transmission. Consider the 300 µH inductance value for compatibility with the intended switching frequency. Verify that the 12.3 mm x 10.8 mm footprint fits within the PCB layout constraints and that the 6.5 mm height does not interfere with adjacent components.

Part Context

This part belongs to the Bourns HCT series of high clearance transformers. These components are engineered for robust performance in demanding environments. The series offers various turns ratios to suit different isolation and signal coupling requirements while maintaining compact surface mount profiles suitable for modern electronics manufacturing.

Replacement Considerations

Direct substitutes may include other Bourns HCT series parts with similar 3:4 ratios, such as HCTSM80304BAL-E, provided the mechanical and electrical parameters match exactly. Cross-reference datasheets to ensure identical ET constants and inductance values before substitution.