HB1601SNL 10/100Base-T SMD Ethernet Isolation Transformer SOP-16

HB1601SNL SMD Ethernet Transformer Overview

The HB1601SNL is a compact surface-mount (SMD) 10/100Base-T Ethernet isolation transformer and filter designed for reliable network signal transmission and noise suppression in Ethernet PHY interfaces. Housed in an SOP-16 package, it provides galvanic isolation, impedance matching, and excellent EMI performance for Fast Ethernet applications.

Designed in accordance with IEEE 802.3 and ANSI X3.263 standards, the HB1601SNL is widely used in SOHO networking equipment, LAN-on-Motherboard (LOM) designs, Ethernet switches, hubs, and industrial networking devices. It is RoHS-compliant, lead-free, and suitable for automated SMT assembly.

Ordering Information

• Part Number: HB1601SNL
• Package: SOP-16, Tape & Reel (for automated SMT assembly)
• Category: LAN Magnetics / Ethernet Isolation Transformers

Key Features of HB1601SNL 100Base-T LAN Transformer

• 10/100Base-T Ethernet isolation transformer with integrated filtering
• SOP-16 surface-mount package, optimized for compact PCB layouts
• Designed to meet IEEE 802.3 and ANSI X3.263 specifications
• Excellent signal integrity with low insertion loss and high return loss
• High common-mode noise rejection (DCMR)
• 1500 Vrms isolation (Hi-Pot) for reliable galvanic isolation
• RoHS compliant, lead-free construction
• Supports reflow soldering up to 245 °C (5 seconds max)
• UL certified (File No. E484635)

HB1601SNL Datasheet

HB1601SNL Specifications

SMD LAN Transformer Applications

• SOHO networking equipment (ADSL modems, routers, gateways)
• LAN-on-Motherboard (LOM) Ethernet interfaces
• Ethernet hubs and switches
• Embedded Ethernet controllers
• Industrial networking and automation systems
• Network device repair and refurbishment

Its SOP-16 form factor makes it ideal for high-density PCB designs where board space is limited.

PCB Design & Assembly Notes

• Follow the recommended SOP-16 land pattern to ensure proper solder wetting and coplanarity
• Maintain adequate clearance between primary and secondary circuits to preserve isolation performance
• Place the transformer close to the Ethernet PHY to minimize trace length and reduce EMI
• Use controlled impedance routing for TX/RX differential pairs
• Suitable for standard lead-free reflow soldering profiles, with a maximum peak temperature of 245 °C

Standards & Compliance

• IEEE 802.3 compliant for 10/100Base-T Ethernet
• ANSI X3.263 compliant
• RoHS compliant and lead-free
• UL Recognized Component (File No. E484635)

These certifications make the HB1601SNL suitable for global markets and long-term industrial deployment.

Frequently Asked Questions