SM91801AL-E

The Bourns SM91801AL-E is a high-performance planar transformer designed for Battery Management System (BMS) signal isolation and communication applications. Featuring advanced planar transformer technology, a 1:1 turns ratio and 4.3kV isolation voltage, it delivers reliable signal transmission and robust electrical isolation in high-voltage battery systems. This AEC-Q200 compliant surface-mount transformer supports working voltages up to 1000V DC and operates across an extended temperature range of -40°C to +125°C, making it ideal for automotive, energy storage and industrial battery management applications.

• Suitable for serial daisy-chain and IsoSPI communication architectures used in modern battery management systems
• Designed for Battery Management System (BMS) signal isolation and communication applications
• Advanced planar transformer technology optimised for high-voltage battery systems
• 1:1 turns ratio provides accurate signal coupling and transmission
• High isolation rating of 4.3kVDC for enhanced electrical safety and circuit protection
• Supports working voltages up to 1000V DC
• Single-channel design with single primary and single secondary windings
• Developed for use with Analog Devices LTC6815 series, NXP MC33771C series and Texas Instruments BQ79616 battery monitoring devices
• AEC-Q200 qualified for demanding automotive applications
• Operating temperature range from -40°C to +125°C
• Surface-mount package enables compact PCB layouts and automated assembly