SM91078L-E

Pulse Transformers Overview

The Bourns SM91078L-E is a LAN transformer designed for 100Base-T applications. It features a single channel configuration with SMD/SMT termination. The component operates within a temperature range of -40°C to +105°C and provides an insulation voltage of 4 kVAC. Key electrical parameters include a primary inductance of 350 µH, a primary DC resistance of 0.6 Ω, and a secondary DC resistance of 1 Ω. The physical dimensions are 30.6 mm in length, 18.6 mm in width, and 9.6 mm in height.

Pulse Transformers Feature Summary

• Supports 100Base-T Ethernet signal transmission
• Provides high isolation voltage for safety compliance
• Designed for surface mount assembly processes

Pulse Transformers Applications

• 100Base-T network interface cards
• Ethernet hub and switch ports
• Industrial communication modules requiring robust isolation

Pulse Transformers Procurement Notes

Verify the specific suffix designation against the manufacturer's current documentation to ensure accurate specification alignment. Confirm that the required RoHS compliance status matches project constraints. Check for any recent updates to the datasheet regarding pinout or thermal characteristics before finalizing procurement orders.

Pulse Transformers Selection Notes

Select this component when designing for 100Base-T standards requiring single-port integration. Ensure the PCB layout accommodates the specified 30.6 mm x 18.6 mm footprint. Verify that the operating environment stays within the -40°C to +105°C range to maintain performance reliability.

Pulse Transformers Part Context

This part belongs to Bourns' LAN transformer portfolio, specifically engineered for Ethernet connectivity. It serves as a critical passive component for signal coupling and impedance matching in local area network infrastructure. The design supports standard copper-based twisted pair cabling configurations.

Pulse Transformers Replacement Considerations

Consult official substitution guides for compatible alternatives. Cross-reference pinouts and electrical specifications carefully to ensure functional equivalence without redesigning the host circuit board.