1000B-5001X 10/100/1000 BASE-T LAN Transformer Module Single Port

Industrial-grade 1000B-5001X Single Port 10/100/1000 BASE-T Transformer. Supports -55°C to +125°C. IEEE 802.3 compliant. Ideal for aerospace and industrial Ethernet.

Product Overview

The 1000B-5001X 10/100/1000 BASE-T Single Port Transformer Module is a compact LAN transformer module designed for reliable Gigabit Ethernet signal transmission in networking and industrial communication equipment. Built for 10/100/1000BASE-T applications, this single-port magnetic module supports stable data transfer, strong isolation performance, and dependable operation in extended-temperature environments.

With IEEE 802.3 compliance, 350µH OCL at 8mA DC bias, and 1500 Vrms dielectric withstand voltage, the 1000B-5001X is well suited for OEM designs that require electrical robustness, space efficiency, and consistent Ethernet performance.

Key Features

• Compliant with IEEE 802.3 standards
• Supports 10/100/1000BASE-T Ethernet
• 350µH OCL with 8mA DC bias at extended temperatures
• 1500 Vrms dielectric withstand voltage
• Epoxy encapsulated package for durability
• SMT mounting for efficient PCB assembly
• Single-channel design
• Operating temperature range: -55°C to +125°C
• Storage temperature range: -55°C to +125°C
• 24-pin package
• Lead finish: Sn63/Pb37
• Moisture Sensitivity Level: 3

Electrical Specifications @ 25°C

1. Insertion Loss

2. Return Loss

3. Crosstalk

4. CM to CM Rejection

5. DM to CM Rejection

1000B-5001X 1000 BASE-T SMT LAN Transformer Datasheet

1. 1000B-5001X LAN Transformer Module Datasheet - Mechanicals

2. 1000B-5001X LAN Transformer Module Datasheet - Electrical Schematics

Typical Applications

The 1000B-5001X transformer module is commonly used in:

• Ethernet switches
• Routers
• Industrial networking equipment
• Embedded communication systems
• Network interface devices
• Gigabit Ethernet ports
• Automation and control hardware

Frequently Asked Questions About 1000B-5001X LAN Transformer

1. What is the primary application for the 1000B-5001X?

The 1000B-5001X is engineered for High-Reliability (Hi-Rel) applications. Unlike standard LAN transformers, it features an extended operating temperature range of -55°C to +125°C and a Sn63/Pb37 lead finish. This makes it ideal for:

• Aerospace and defense electronics.
• Industrial automation in extreme climates.
• High-end transportation infrastructure.

2. Is this module compliant with IEEE 802.3 standards?

Yes. The 1000B-5001X fully complies with IEEE 802.3 standards for 10/100/1000 BASE-T Ethernet. It supports full Gigabit data rates while maintaining the necessary electrical isolation and signal integrity required by the protocol.

3. Why does this transformer use a Sn63/Pb37 (Tin/Lead) finish?

While many consumer products have moved to RoHS-compliant (lead-free) finishes, many critical mission systems in aerospace and defense specifically require Sn/Pb (Tin/Lead) finishes. This is primarily to mitigate the risk of "tin whiskers," which can cause short circuits in sensitive electronic systems over long deployment cycles.

4. What are the isolation and dielectric capabilities?

Safety and signal protection are central to the 1000B-5001X design:

• Dielectric Withstanding Voltage (DWV): Rated at 1500 Vrms.
• Isolation: Designed to protect the PHY and internal circuitry from external surges and common-mode noise.

5. Does the Open Circuit Inductance (OCL) change with temperature?

The 1000B-5001X is rated for a minimum OCL of 350µH with an 8mA DC bias. It is specifically tested to maintain this inductance across the entire extended temperature range ($-55°C$ to $+125°C$), ensuring stable performance even at the thermal limits.

6. What is the Moisture Sensitivity Level (MSL) for this component?

This module has a Moisture Sensitivity Level of 3 (MSL 3). It is housed in an epoxy encapsulated package for added durability, but standard MSL 3 handling procedures (including proper dry-packing and floor-life monitoring) should be followed prior to the SMT reflow process.

7. What is the physical footprint of the 1000B-5001X?

The module utilizes a 24-pin SMT (Surface Mount Technology) package with dimensions of 17.78 x 12.45 x 5.97 mm. The compact height of under 6 mm makes it suitable for low-profile PCB designs and high-density networking blades.