H1112NL

Overview

The H1112NL is a surface mount pulse transformer module manufactured by Pulse Electronics, designed for 10/100 Base-T applications. It features a single channel configuration with a 1CT:1CT turns ratio. The component measures 14.81mm in length, 12.95mm in width, and has a maximum seated height of 9.4mm. It operates within a temperature range of 0°C to +70°C and provides an insulation voltage of 1.5 kV. The unit weighs approximately 3.130 grams and is classified as unshielded.

Feature Summary

• Designed specifically for 10/100 Base-T network interfaces
• Provides electrical isolation between transmitter and receiver circuits
• Surface mount construction for automated assembly integration

Applications

• 10/100Base-T Ethernet network ports
• Non-PoE LAN interface modules
• Single-port data isolation circuits

Procurement Notes

Verify the specific ordering suffix to ensure correct packaging type, such as tube or reel variants. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Cross-reference manufacturer part numbers with distributor codes to avoid selection errors during procurement.

Selection Notes

Select this component for standard 10/100 Mbps Ethernet designs requiring non-PoE isolation. Ensure the PCB footprint accommodates the 14.81mm x 12.95mm dimensions and 9.4mm height. Consider thermal management capabilities within the specified 0°C to +70°C operating range for reliable performance.

Part Context

This model belongs to Pulse Electronics' audio and signal transformer portfolio, specifically targeting LAN connectivity solutions. It serves as a critical isolation component in network interface cards and embedded Ethernet controllers, ensuring signal integrity and safety compliance in consumer and industrial networking hardware.

Replacement Considerations

The S558-5999-K6-F from Bel Fuse Inc. is listed as a similar alternative, though it is discontinued. Verify pin compatibility and electrical parameters before substitution.