H1270NL

Overview

The H1270NL is a dual-port LAN pulse transformer module manufactured by Pulse Electronics, designed for surface-mount applications in network interface circuits. It supports 10/100BASE-TX Ethernet standards with a primary-to-secondary turns ratio of 1CT:1CT for both transmitter and receiver channels. The component features an inductance of 350 µH and provides 1.5 kV isolation voltage. It operates within a temperature range of 0°C to +70°C. Physical dimensions are 13.08 mm in length, 12.70 mm in width, and 3.69 mm in maximum height.

Feature Summary

• Dual-port configuration supporting independent transmitter and receiver signal paths
• Surface-mount design optimized for automated PCB assembly processes
• Integrated magnetic shielding for noise immunity in high-density layouts

Applications

• 10/100BASE-TX Ethernet network interface cards
• Industrial communication modules requiring robust signal integrity
• Consumer networking equipment such as routers and switches

Procurement Notes

Verify current availability status as the H1270NL may be discontinued or subject to supply constraints. Confirm RoHS compliance and environmental certifications prior to procurement. Ensure ordering suffixes match required packaging formats. Cross-reference datasheet revisions to confirm pinout consistency with existing designs.

Selection Notes

Select this component for applications requiring standardized 10/100BASE-TX connectivity with specific form factor constraints. Evaluate thermal performance within the 0°C to +70°C operating range. Consider mechanical stability during reflow soldering due to surface-mount construction. Verify impedance matching requirements against target network specifications.

Part Context

This component belongs to Pulse Electronics' LAN transformer portfolio, specifically engineered for twisted-pair data transmission. It integrates magnetics into a compact module, reducing board space compared to discrete solutions. The series targets reliable performance in standard Ethernet environments without PoE capabilities.

Replacement Considerations

The H1270FNLT is documented as a similar substitute part number from Pulse Electronics.