HCTSM80403AAL-E

Overview

The Bourns HCTSM80403AAL-E is an encapsulated pulse transformer from the HCT series, designed for surface mount applications. It features a 4:3 turns ratio and a secondary current rating of 350 mA. The component has an inductance of 250 µH and a volt-time product (Et) of 11 V/µs. Physical dimensions are 12.3 mm in length, 10.8 mm in width, and 6.5 mm in height, with a unit weight of 1.277 g. It operates within a temperature range of -40°C to +125°C and holds AEC-Q200 qualification.

Feature Summary

• High clearance and creepage distance design for enhanced isolation safety
• Encapsulated construction providing robust environmental protection
• Automotive-grade reliability certified under AEC-Q200 standards

Applications

• Isolation and data interface circuits in automotive electronics
• Power supply signal transmission in industrial systems
• Data communication interfaces requiring high insulation resistance

Procurement Notes

Verify that the specific suffix 'E' aligns with RoHS3 compliance requirements as indicated by manufacturer documentation. Confirm the 4:3 turns ratio matches the target circuit topology before integration. Ensure PCB layout accommodates the specified SMD footprint dimensions of 12.3 mm x 10.8 mm. Validate thermal management strategies against the +125°C maximum operating temperature limit during peak load conditions.

Selection Notes

Select this component when high insulation clearance is critical for safety certification compliance. The 250 µH inductance supports stable signal transfer in isolated data lines. Consider the 350 mA secondary rating to ensure adequate current handling for the intended load. The wide operating temperature range makes it suitable for harsh automotive or industrial environments where standard commercial parts may fail.

Part Context

This part belongs to the Bourns HCT series of high clearance transformers, engineered for demanding isolation applications. It complements other HCT models like the HCTSM80102AAL-E, which shares similar physical and electrical characteristics but differs in turns ratio. The series is characterized by encapsulated designs and AEC-Q200 qualification, targeting automotive and industrial markets requiring reliable signal isolation.

Replacement Considerations

The HCTSM80102AAL-E is a related model within the same series offering identical physical dimensions and electrical parameters except for a 1:2 turns ratio instead of 4:3. Verify that the alternative turns ratio meets the specific voltage transformation requirements of the application circuit before substitution.