BX2577LNLT

Overview

The BX2577LNLT is an ADSL transformer module manufactured by Pulse Electronics. It features a single-channel design with SMD/SMT termination for surface mount assembly. The component operates within a frequency range of 1 MHz to 100 MHz and provides electrical isolation with an insulation voltage of 1.5 kV. Key electrical parameters include a primary coil resistance of 1 Ohm and a secondary coil resistance of 1 Ohm, with an inductance of 350 uH. The physical dimensions are 13.65 mm in length and 15.80 mm in width. It functions as a transmission line transformer with a 1:4 transmitter ratio and a 1:2 receiver ratio, designed specifically for Globespan CPE chipsets.

Feature Summary

• Designed for ADSL applications supporting Globespan CPE chipsets
• Provides galvanic isolation via 1.5 kV insulation voltage rating
• Surface mount module construction for automated assembly

Applications

• ADSL Customer Premises Equipment (CPE) implementations
• Globespan chipset-based modem designs
• Digital Subscriber Line signal conditioning circuits

Procurement Notes

Verify the specific datasheet version and RoHS compliance status prior to procurement, as documentation indicates varying regulatory information across sources. Confirm that the 1:4 transmitter and 1:2 receiver winding ratios align with the target Globespan chipset requirements. Ensure the SMD package dimensions fit the designated PCB footprint without mechanical interference.

Selection Notes

Select this component when designing ADSL interfaces requiring compatibility with Globespan semiconductor solutions. The unshielded module design suits applications where external shielding is managed by the system enclosure. Verify that the operating temperature range meets the environmental specifications of the final deployment location.

Part Context

This part belongs to the Pulse Electronics transformer portfolio, categorized under audio and signal transformers. It serves as a specialized interface component for digital subscriber line technologies, distinct from standard LAN or power transformers. The manufacturer lists it under active product lines for communication equipment manufacturing.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineering changes should be validated against the original Globespan chipset reference design to ensure impedance matching and signal integrity are maintained.