The LINK-PP LP41223NL is a high-performance, single-port 10/100 BASE-T magnetic transformer module specifically engineered for next-generation PoE++ (IEEE 802.3bt) applications. Designed to handle increased power demands, this module supports up to 1.1A DC current capability, making it ideal for high-power network devices.
1. Key Features of PoE++ LAN Magnetics
- PoE++ Ready: Optimized for increased power requirements with a 1.1A DC current capability per port.
- Standards Compliant: Fully meets the IEEE 802.3bt specification for high-power Power over Ethernet.
- Safety Certified: UL recognized under file number E484653.
- Robust Isolation: High-voltage isolation of 1500Vrms (1 minute) or 1800Vrms (1 second).
- Eco-Friendly: Lead-free and fully RoHS compliant.
- Product Type:High-performance Ethernet LAN Transformer designed for increased PoE++ power delivery requirements.
- Primary Application:Specifically engineered for IEEE 802.3bt (PoE++) systems requiring enhanced DC current handling up to 1.1A.
2. Electrical Specifications @ 25°C
2.1 Turns Ratio
| Pins |
Turns Ratio |
| P1–3 : P12–10 |
1:1 ±2% |
| P4–6 : P9–7 |
1:1 ±2% |
Balanced 1:1 design ensures proper impedance matching between PHY and cable side for 10/100/1000Base-T systems.
2.2 Open Circuit Inductance (OCL)
Test Condition: 100kHz, 0.1Vrms, 28mA DC Bias
| Pins |
OCL |
| P7–9, P12–10 |
350µH Min |
Maintains stable low-frequency performance even under DC bias conditions required by PoE++ operation.
2.3 Insertion Loss
| Frequency Range |
Insertion Loss |
| 0.5–100MHz |
-1.0dB Max |
Low insertion loss ensures minimal signal attenuation and improved eye diagram margin.
2.4 Return Loss (Minimum)
| Frequency Range |
Return Loss (dB Min) |
| 0.5–30MHz |
-18 |
| 30–45MHz |
-15 |
| 45–60MHz |
-13 |
| 60–80MHz |
-10 |
Optimized impedance matching reduces signal reflections and enhances link stability.
2.5 Cross Talk
| Frequency Range |
Cross Talk |
| 1–100MHz |
-35dB Min |
Ensures low electromagnetic interference and stable differential signaling.
2.6 CMRR (Common Mode Rejection Ratio)
| Frequency Range |
CMRR |
| 0.5–100MHz |
-33dB Min |
Strong suppression of common-mode noise, critical for high-power PoE++ systems.
2.7 Polarity
Pins 1 & 12 and 4 & 9 are in phase.
2.8 Hi-Pot (Primary to Secondary)
- 1500Vrms, 1 minute or
- 1800Vrms, 1 second
Provides reinforced isolation for safety and surge protection.
2.9 PoE++ Current Capability
Designed for increased PoE++ requirements with: 1.1A DC current capability
Supports high-power IEEE 802.3bt applications.
2.10 Operating Temperature
0°C to +70°C:Suitable for commercial and standard industrial environments.
3. LP41223NL PoE++ LAN Transformer Drawing:
Technical Note on Polarity: Pins 1 & 12 and Pins 4 & 9 are in phase to ensure signal integrity across the transformer.
4. Applications of PoE++ Ethernet LAN Transformer
The LP41223NL is versatile and designed to support a wide array of networking applications:
- SOHO Equipment: ADSL modems and home routers.
- Enterprise Networking: LAN-on-Motherboard (LOM) designs.
- Infrastructure: Network Hubs and high-power PoE++ Switches.
- Industrial IoT: Devices requiring high-current power delivery alongside data.
Product Tags:
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LP41223NL | 10/100 BASE-T Single Port PoE++ Transformer Module Images
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