Overview of LP1188NL Single-Port SMD Ethernet Isolation Transformer Module

 
The LP1188NL is a high-performance, single-port Ethernet magnetics module designed to support 10/100 Base-T network data rates. Housed in a compact 16-pin surface-mount (SMD) module, it offers galvanic isolation, impedance matching, and signal integrity functionality between an Ethernet PHY and the twisted-pair cable interface. It is engineered for reliability in embedded, industrial, and consumer Ethernet applications.
 

Key Features

• Supports 10 Base-T and 100 Base-TX network speeds. 
• Single-port (1x10/100) configuration, 16-pin SMD footprint. 
• Turns ratio: 1CT : 1CT (both transmit and receive sides) for optimized coupling. 
• Operating temperature range: –40 °C to +85 °C for broad environmental tolerance. 
• Hi-Pot (isolation) rating typically 1500 Vrms (minimum) for equipment safety & insulation. 
• Compliant with IEEE 802.3 (10/100 Base-T) standards, RoHS, REACH, UL, ISO9001/14001 certified (via LINK-PP manufacturing). 
• Open-frame high-performance magnetics design, optimized for EMI suppression, compact board layout, and SMT reflow compatibility.

Electrical Specifications @25°C

Design & Selection Considerations

• Confirm network speed requirement: If your system requires Gigabit (1000 Base-T) or higher, select accordingly; LP1188NL is optimized for 10/100 Base-T.
• Ensure PCB layout accommodates transformer placement near PHY or RJ45 magnetics path for best signal integrity.
• Consider the isolation voltage rating relative to the system safety/regulatory environment.
• Verify the suitability of the reflow profile (SMT) and the maximum component height, considering enclosure constraints.
• If PoE (Power-over-Ethernet) capability is required, ensure magnetics and RJ45 interface are rated accordingly (LP1188NL is for NON-PoE).

Part Number of Related Magnetics Modules:

Why Choose LINK-PP?

Quality & Reliability

LINK-PP is a global leader in the design and manufacturing of Integrated RJ45 Connectors and Discrete Magnetic Transformers.

We adhere to the highest production standards, following the strict quality guidelines originally established by Tyco Electronics. All raw material suppliers are carefully selected and approved according to Tyco’s standards before entering our production process.

• Manufactured under strict quality control
• Certified with ISO 9001:2008
• UL, REACH, and RoHS compliant
• OEM supplier for Tyco Electronics for 9 years
• Committed to active environmental protection policies
• 100% module testing — every unit is tested, not just samples

Our Valued Customers

LINK-PP is trusted by leading global technology companies, including: TI, INTEL, SAMSUNG, FLUKE, EKF, HUAWEI, IBM, CISCO, FLEXTRONICS, JABIL, Foxconn, CANON, and Arduino.