LM-NP-1001-B1L

Overview

The LM-NP-1001-B1L is a through-hole audio transformer manufactured by Bourns Inc., designed for line matching applications. It features a 1:1 turns ratio and operates with an impedance of 600:600 ohms. The component supports a high isolation voltage of 6500VDC. Primary and secondary DC resistances are specified at 66 ohms, with a minimum inductance of 2.8H measured at 0.2kHz. The device utilizes an 8-terminal PC pin package for reliable surface mounting.

Feature Summary

• Provides balanced line matching with a 1:1 turns ratio for signal integrity
• Meets return loss specifications defined by BS6305 standard
• Ensures low insertion loss of 1.5dB or less for efficient signal transfer
• Offers high dielectric strength with 6500VDC isolation capability

Applications

• Telecommunications line matching circuits
• Audio signal processing systems requiring balanced interfaces
• Professional audio equipment input/output stages
• Industrial control systems utilizing 600-ohm signaling standards

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required lead-free or halogen-free manufacturing processes. Confirm that the 8-terminal PC pin footprint matches the target PCB design. Cross-reference the datasheet version to validate the 6500VDC isolation rating and BS6305 compliance status before finalizing procurement orders.

Selection Notes

Select this component when a 1:1 impedance transformation is required for 600-ohm systems. Ensure the application environment accommodates through-hole mounting constraints. Consider the 6500VDC isolation requirement if high-voltage safety barriers are necessary between circuit sections. Validate that the 2.8H minimum inductance meets the low-frequency response requirements of the specific audio or telecom application.

Part Context

This part belongs to Bourns' line matching transformer series, specifically engineered for audio and telecommunications signals. It serves as a critical interface component for balancing unbalanced signals or isolating circuit stages while maintaining signal fidelity. The series is widely used in professional audio and legacy telecom infrastructure where standardized 600-ohm impedances are prevalent.

Replacement Considerations

Direct substitutes must match the 1:1 ratio, 600:600 ohm impedance, and 8-pin through-hole configuration. Verify equivalent inductance and isolation voltage ratings. Consult manufacturer cross-reference lists for approved alternatives with identical mechanical and electrical specifications.