11FB-05NL LAN Transformer 10/100base-T 11FB-05ANL SMD Magnetics
11FB-05NL 10/100BASE-T Magnetic Module Overview
The 11FB-05NL is a surface-mount LAN pulse transformer designed for 10/100BASE-T Ethernet applications, providing galvanic isolation, impedance matching, and EMI suppression for Ethernet PHY interfaces.
It integrates a 1:1 turns ratio transformer with high common-mode rejection, enabling stable signal integrity, reduced electromagnetic interference, and reliable data transmission in compact PCB designs. With 1500 Vrms isolation, wide -40°C to +85°C operating temperature, and compact SMD-16P footprint, it is well suited for network switches, routers, IP cameras, industrial Ethernet, and embedded networking devices.
Key Features & Benefits
- Optimized for 10/100BASE-T Ethernet PHY interfaces
- 1:1 turns ratio ensures accurate impedance matching
- High isolation voltage: 1500 Vrms for safety and signal protection
- High common-mode rejection for improved EMI immunity
- Low insertion loss for stable high-speed data transmission
- Compact SMD-16P package (12.8 × 6.9 mm) ideal for high-density PCB layouts
- Wide temperature range: -40°C to +85°C suitable for industrial environments
- RoHS compliant for environmentally friendly manufacturing
General Specifications of 11FB-05NL LAN Transformer
| Parameter | Specification |
|---|---|
| Part Number | 11FB-05NL/11FB-05ANL |
| Product Type | LAN Transformer (10/100 Base-T) |
| Configuration | Single Port |
| Supported Speed | 10/100 Mbps Ethernet |
| Standards Compliance | IEEE 802.3, ANSI X3.263 |
| Inductance (OCL) | ≥ 350 μH @ 8mA bias current |
| Isolation Voltage | ≥ 1500 V DC |
| Package Type | SMD-16P, 12.8 × 6.9 mm |
| Pin Count | 16 pins |
| Mounting Type | Surface Mount (SMT) |
| Reflow Soldering | Lead-free compatible (IR reflow) |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -40°C to +125°C |
| RoHS Compliance | Yes |
| Application | 10/100 Mbps Ethernet Interfaces |
| Production Suitability | High-volume, automated manufacturing |
Electrical Characteristics (@25°C)
| Parameter | Condition | Typical / Min |
|---|---|---|
| Turns Ratio | TX/RX | 1CT : 1 |
| OCL (Inductance) | @100 kHz, 100 mV, 8 mA DC bias | ≥ 350 µH |
| Insertion Loss | 1–65 MHz | ≤ -1.0 dB |
| 65–100 MHz | ≤ -1.1 dB | |
| 100–125 MHz | ≤ -1.5 dB | |
| Return Loss | 1–30 MHz | ≥ -18 dB |
| 40 MHz | ≥ -18 dB | |
| 50 MHz | ≥ -16 dB | |
| 60–80 MHz | ≥ -12 dB | |
| 100 MHz | ≥ -10 dB | |
| Crosstalk | 30 MHz | ≥ -45 dB |
| 60 MHz | ≥ -40 dB | |
| 100 MHz | ≥ -35 dB | |
| DCMR | 30 MHz | ≥ -43 dB |
| 60 MHz | ≥ -37 dB | |
| 100 MHz | ≥ -33 dB |
11FB-05NL Mechanical & Schematic Drawing
Why Choose 11FB-05NL?
For hardware engineers & purchasing teams, 11FB-05NL delivers:
- Stable Ethernet signal integrity
- High electrical isolation for PHY protection
- Compact footprint for dense layouts
- Industrial-grade reliability
- Excellent cost-performance ratio
This makes it an ideal drop-in LAN transformer solution for high-volume Ethernet device manufacturing.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.