1000B-5003FNL

Overview

The iNRCORE 1000B-5003FNL is a surface-mount pulse transformer designed for LAN applications supporting 10/100/1000 Base-T standards. It features a dual configuration with a 1:1 turns ratio and an inductance of 350 µH. The component operates within a frequency range of 100 kHz to 100 MHz and withstands an insulation voltage of 1.5 kV. Physical dimensions are 17.53 mm in length, 12.19 mm in width, and 5.72 mm in height. It functions reliably between -55°C and +125°C.

Feature Summary

• Supports high-speed data transmission for Gigabit Ethernet networks
• Provides electrical isolation and signal integrity for single-port interfaces
• Engineered for stable performance under extreme temperature conditions

Applications

• 10/100/1000Base-T network interface cards
• Industrial communication gateways
• Telecommunications equipment

Procurement Notes

Verify the specific datasheet version and manufacturer lot codes upon receipt to ensure compliance with MIL-PRF-21038 or equivalent reliability standards. Confirm that the surface-mount package matches the required PCB footprint and soldering profile. Cross-reference the part number suffix to validate the exact winding configuration and isolation ratings specified for the target design.

Selection Notes

Select this component when designing systems requiring robust magnetic isolation for Gigabit Ethernet ports. Ensure the application demands operation across the full industrial temperature range of -55°C to +125°C. Verify that the 350 µH inductance and 1.5 kV isolation voltage meet the circuit's electromagnetic interference and safety requirements.

Part Context

This part belongs to the 1000B series of RF transformers manufactured by iNRCORE, LLC. The brand specializes in high-reliability magnetic components for aerospace, defense, and critical infrastructure. These products are engineered to withstand harsh environments and mission-critical operational stresses.

Replacement Considerations

Consult official distributor catalogs for direct cross-reference part numbers from iNRCORE or other qualified suppliers offering identical 10/100/1000 Base-T pulse transformers with matching 1:1 ratios and SMT packages.