SM51108EL

Pulse Transformers Overview

The SM51108EL is a pulse transformer module designed for 10/100 Base-T Ethernet interface applications, including VoIP and Power over Ethernet (PoE) systems. It features a 1CT:1CT winding configuration with a minimum open-circuit inductance of 350 µH. The component operates within a frequency range of 1 to 100 MHz and maintains a maximum insertion loss of -1.2 dB. It provides an isolation voltage of 1500 VAC and utilizes a gull-wing surface-mount termination style.

Pulse Transformers Feature Summary

• Engineered specifically for 10/100 Base-T Ethernet interface design requirements
• Supports Voice over IP and Power over Ethernet application architectures
• Provides high electrical isolation capability for signal integrity protection

Pulse Transformers Applications

• 10/100 Base-T Ethernet network interfaces
• Voice over IP (VoIP) equipment
• Power over Ethernet (PoE) powered devices

Pulse Transformers Procurement Notes

Verify current availability status as the SM51108EL is classified as obsolete by Bourns Inc. and is not recommended for new designs. Confirm that the designated replacement part number meets all original electrical specifications before finalizing procurement decisions for existing production lines.

Pulse Transformers Selection Notes

Select this component only for legacy system maintenance or repair where the specific form factor and electrical characteristics are required. Ensure the design accommodates the obsolete status by planning for potential supply chain constraints. Validate compatibility with existing PCB layouts and soldering profiles suitable for gull-wing SMD packages.

Pulse Transformers Part Context

This device belongs to the SM51108L series of LAN transformers manufactured by Bourns Inc. These modules are specialized magnetic components intended for telecommunications and data communication networks. The series focuses on providing integrated pulse transformation and isolation for standard Ethernet physical layer interfaces.

Pulse Transformers Replacement Considerations

Bourns Inc. identifies the SM51108PEL as the preferred alternative to the obsolete SM51108EL. Engineers should evaluate the SM51108PEL datasheet to confirm pinout compatibility and electrical performance equivalence before substituting the component in existing designs.