SM-LP-5001E

Overview

The Bourns SM-LP-5001E is a surface mount line matching transformer designed for audio and signal applications. It features a 1:1 turns ratio with primary and secondary impedances of 600 ohms. The component operates within a frequency range of 200 Hz to 4 kHz and provides an insulation voltage of 1.5 kV. Key electrical specifications include a DC resistance of 115 ohms for both windings and an insertion loss of 2 dB. The device is housed in an SMD-6 package measuring 12.8 mm in length, 9.0 mm in width, and 7.5 mm in height, suitable for automated assembly.

Feature Summary

• Surface mount construction optimized for automated PCB assembly processes
• Sealed design ensuring environmental protection and reliability
• 1:1 impedance matching capability for balanced line applications
• Compliance with UL 60950 safety standards and RoHS directives

Applications

• Modem interface circuits
• Laptop audio subsystems
• Precision measurement instrumentation

Procurement Notes

Verify the specific suffix 'E' when ordering, as it denotes the tape and reel packaging configuration required for high-volume surface mount production. Confirm that the 1.5 kV isolation rating meets system safety requirements. Ensure the operating temperature range of -20°C to +85°C aligns with the intended environmental conditions. Cross-reference the 115 ohm DC resistance against circuit design constraints to prevent signal degradation or excessive power dissipation in the application.

Selection Notes

Select this component for applications requiring precise 600 ohm impedance matching in a compact surface mount footprint. The sealed construction makes it suitable for environments where moisture resistance is critical. Consider the 200 Hz to 4 kHz bandwidth limitation when designing for voice-band signals. The single-channel architecture simplifies layout compared to multi-winding alternatives. Verify compatibility with standard reflow soldering profiles for SMD-6 packages.

Part Context

This part belongs to Bourns' SM-LP series of surface mount line matching transformers. These components are engineered specifically for telecommunications and audio signal transmission where impedance balance is essential. The series offers various impedance options, but the 600 ohm variant is standard for professional audio and legacy telephony interfaces. The design prioritizes space efficiency while maintaining signal integrity across the specified frequency band.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.