H16120SCG PoE Magnetics Transformer for 10/100Base-TX Ethernet
The H16120SCG is a high-performance PoE LAN magnetics transformer designed for Ethernet applications requiring stable signal integrity, high isolation, and reliable Power over Ethernet (PoE) capability. It is optimized for IEEE 802.3at (PoE+) compliant systems and supports enterprise-grade Ethernet switches, IP cameras, wireless access points, and industrial networking equipment.
With a compact footprint and robust electrical characteristics, H16120SCG delivers excellent insertion loss, return loss, and crosstalk performance across the full Ethernet frequency band up to 100 MHz.
Key Features of H16120SCG PoE LAN Magnetics Transformer
- Designed for IEEE 802.3at PoE+ applications (720 mA current capability)
- High OCL (350 µH min) ensures excellent low-frequency performance
- Low leakage inductance for reduced signal distortion
- Superior EMI suppression and noise immunity
- High isolation voltage: 1500 Vrms
- Wide operating temperature range: -40 °C to +85 °C
- Compact surface-mount form factor
- Suitable for industrial and enterprise Ethernet designs
Electrical Specifications (@25 °C)
| Parameter | Specification |
|---|---|
| Open Circuit Inductance (OCL) | 350 µH Min @ 100 kHz, 0.2 V, 8 mA DC Bias |
| Current Capability | 720 mA (IEEE 802.3at compliant) |
| Leakage Inductance (LL) | 0.5 µH Max @ 100 kHz, 0.2 V |
| Interwinding Capacitance (Cw/w) | 20 pF Typ @ 100 kHz, 0.2 V |
| DC Resistance (DCR) | 1.4 Ω Max |
| Turns Ratio | 1CT:1CT (TX) / 1CT:1CT (RX) ±2% |
| Polarity | 1–16, 6–11 In-Phase |
H16120SCG Datasheet- Schematic
H16120SCG PoE LAN Transformer Signal Performance
1. Insertion Loss
- 1–100 MHz: -1.2 dB Max (TX / RX)
2. Return Loss
- 1–30 MHz: -16 dB Min
- 40 MHz: -16 dB Min
- 50 MHz: -14.1 dB Min
- 60 MHz: -12.5 dB Min
- 80 MHz: -10 dB Min
3. Crosstalk (TX to RX)
- 30 MHz: -35.8 dB Min
- 60 MHz: -30.8 dB Min
- 100 MHz: -28.0 dB Min
4. Differential Mode Rejection Ratio (DMRR)
- 30 MHz: -43 dB Min
- 60 MHz: -37 dB Min
- 100 MHz: -33 dB Min
5. Isolation & Reliability
- Hi-Pot Isolation: 1500 Vrms, 1 mA, 60 seconds
- Designed to meet stringent Ethernet isolation and safety requirements
- Suitable for long-term continuous operation in harsh environments
Packaging Information
- Package Quantity:
- One Reel: 600 pcs
- One Inner Carton: 600 pcs
- Inner Carton Size: 335 × 340 × 40 mm
- Export Carton Size: 400 × 400 × 270 mm
PoE Magnetics Transformer Typical Applications
- PoE Ethernet switches
- IP cameras (PoE / PoE+)
- Wireless access points
- VoIP phones
- Industrial Ethernet devices
- Network interface cards (NICs)
Summary
The H16120SCG PoE Magnetics LAN Transformer combines high electrical performance, robust isolation, and PoE+ current capability in a compact SMT package. It is an ideal solution for designers seeking a reliable, standards-compliant Ethernet magnetics component for enterprise and industrial networking equipment.
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