The SM91514AL-E is a LAN transformer module manufactured by Bourns Inc. These modules are designed to provide galvanic isolation and signal conditioning for Ethernet and other network interfaces. They are commonly used to connect network devices while ensuring electrical safety and signal integrity.

Applications:

• Ethernet network interfaces
• Network interface cards (NICs)
• Routers and switches
• Embedded systems with network connectivity
• Industrial Ethernet applications

Features:

• Compliant with IEEE 802.3 standards
• Designed for Ethernet applications like 10/100/1000 Base-T
• Provides galvanic isolation
• Low insertion loss
• High return loss
• Excellent common mode rejection
• Compact design
• RoHS compliant

Benefits:

• Electrical Isolation: Protects sensitive electronic components from voltage surges and transients, enhancing system reliability.
• Signal Integrity: Ensures clean and reliable signal transmission, reducing the likelihood of data errors.
• Compliance: Meets industry standards, simplifying regulatory compliance.
• Space Saving: Compact design allows for efficient use of board space.
• Reliability: Robust construction ensures long-term performance in demanding environments.

Technical Specifications:

While specific electrical parameters can vary depending on the precise application, typical LAN transformer specifications include isolation voltage (e.g., 1500 Vrms or higher), insertion loss (e.g., less than 1 dB), return loss (e.g., greater than 18 dB), and common mode rejection ratio (CMRR) (e.g., greater than 30 dB). The SM91514AL-E is designed for use with specific Ethernet PHY transceivers. Check the Bourns datasheet for full specifications.

The module consists of multiple wound components on a common core, providing impedance matching and voltage isolation between the Ethernet PHY and the network cable. It is designed to minimize signal distortion and ensure reliable data transmission. Bourns is a well-known manufacturer of electronic components, and their LAN transformer modules are widely used in networking equipment.