SM91801AL-E

Pulse Transformers Overview

The SM91801AL-E is an automotive-grade BMS planar transformer designed for battery management systems. It features a single primary winding with a 1:1 turns ratio and offers an inductance of 450 µH. The component provides high isolation with a dielectric withstand voltage of 4300 VDC. It operates within a temperature range of -40°C to +125°C and utilizes surface mount termination. Dimensions are 14 mm length, 8.5 mm width, and 5.5 mm height.

Pulse Transformers Feature Summary

• AEC-Q200 qualified for automotive reliability
• Planar structure optimized for BMS signal applications
• High isolation voltage up to 4300 VDC

Pulse Transformers Applications

• Multi-cell battery monitoring designs
• Battery Management Systems (BMS)
• High energy storage battery applications

Pulse Transformers Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical parameters and packaging options. Ensure compatibility with target ICs such as LTC6815 or MC33771 series. Confirm RoHS compliance status and lead times directly with authorized distributors prior to ordering.

Pulse Transformers Selection Notes

Select this component for applications requiring AEC-Q200 qualification and high isolation in compact PCB layouts. It is specifically engineered to interface with major semiconductor manufacturers' BMS ICs. Consider thermal performance requirements within the specified operating temperature range.

Pulse Transformers Part Context

This part belongs to the SM91801AL series of BMS signal transformers from Bourns. These components are designed to support next-generation battery management architectures by providing reliable galvanic isolation between high-voltage battery packs and low-voltage control circuitry.

Pulse Transformers Replacement Considerations

Consult official substitution lists for verified alternatives. Cross-reference with similar BMS planar transformers ensuring matching isolation ratings and footprint dimensions.