SM91509AL-E

Pulse Transformers Overview

The SM91509AL-E is an automotive-grade BMS signal transformer manufactured by Bourns Inc. It features a single primary and single secondary winding configuration with a 1:1 turns ratio. The component provides an inductance of 600 uH and supports a maximum operating temperature of +125 C, with a minimum rating of -40 C. Its physical dimensions are 14.81 mm in length, 11.68 mm in width, and 5 mm in height. The device utilizes SMD/SMT termination for PCB mount installation and holds AEC-Q200 qualification.

Pulse Transformers Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Designed specifically for Battery Management System applications
• Surface mount construction for automated assembly

Pulse Transformers Applications

• Battery Management Systems (BMS)
• Automotive electronic circuits
• Signal isolation interfaces

Pulse Transformers Procurement Notes

Verify the specific suffix 'E' against the official Bourns datasheet to confirm compliance with current environmental directives and material declarations. Ensure that the required inductance value of 600 uH aligns with the system design specifications before finalizing procurement orders. Cross-reference the package dimensions with the target PCB footprint to guarantee mechanical compatibility during integration.

Pulse Transformers Selection Notes

Select this component when a 1:1 isolated signal path is required within high-temperature automotive environments. The 600 uH inductance suits specific frequency response needs for battery monitoring signals. Consider the 5 mm seated height constraint for low-profile board layouts. Confirm that the single-winding topology meets the circuit's electrical isolation requirements without additional complex configurations.

Pulse Transformers Part Context

This part belongs to the SM91509AL series of BMS transformers from Bourns. These components are engineered for robust performance in electric vehicle and hybrid vehicle powertrain systems. The series emphasizes compact form factors while maintaining strict automotive quality standards, serving as critical interface elements between battery cells and control units.

Pulse Transformers Replacement Considerations

Consult the official Bourns replacement guide for direct equivalents. Verify pinout compatibility and inductance tolerances if substituting with other BMS transformers.