LM-NP-1002L

Overview

The LM-NP-1002L is a fully encapsulated, low-profile line matching transformer manufactured by Bourns Inc. It features a 1:1 turns ratio and a center-tapped winding configuration designed for audio signal applications. The component utilizes through-hole mounting technology with physical dimensions of 17.7mm in length and width, and a maximum seated height of 12.6mm. Key electrical specifications include an inductance of 2.8H and a DC resistance of 66 Ohms. The unit is rated for operation at 1KHz and maintains a tolerance of 10%.

Feature Summary

• Fully encapsulated construction for environmental protection
• Low-profile design suitable for space-constrained assemblies
• Center-tapped winding architecture for balanced signal handling

Applications

• Audio line matching circuits
• Signal transformation in audio equipment
• Balanced to unbalanced signal conversion

Procurement Notes

Verify the specific manufacturer standard lead time of 25 weeks prior to order placement, as production schedules may vary. Confirm that the UL approval agency certification meets the regulatory requirements of the target market. Ensure the through-hole mounting style aligns with the printed circuit board layout and assembly capabilities. Cross-reference the 10% tolerance specification against system performance thresholds to guarantee acceptable signal integrity margins.

Selection Notes

Select this component when a 1:1 impedance transformation ratio is required for audio frequency applications around 1KHz. The 2.8H inductance value must be sufficient for the intended low-frequency response without causing excessive phase shift. Verify that the 66 Ohm DC resistance fits within the source and load impedance constraints of the circuit design. Consider the 17.7mm x 17.7mm footprint and 12.6mm height limits to ensure mechanical compatibility with the enclosure or chassis.

Part Context

This part belongs to the LM-NP/-LP 1000 Series of line matching transformers from Bourns Electronic Solutions. The series provides specialized audio transformers characterized by their encapsulated construction and specific winding configurations. These components are engineered to provide reliable signal transfer in professional and consumer audio systems where size and electrical performance are critical factors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official Bourns catalogs for direct equivalents within the LM-NP series, such as LM-NP-1001-B1L or LM-NP-1004L, ensuring all electrical parameters match the original design requirements.