Product Details
Place of Origin: Guangdong,China
Brand Name: LINK-PP
Certification: UL,RoHS,Reach,ISO
Model Number: 7490220122
Payment & Shipping Terms
Minimum Order Quantity: 400pcs
Price: $0.16-$3.2
Packaging Details: T&R
Delivery Time: Stock
Payment Terms: TT,NET30/60/90 Days
Supply Ability: 5KK/Month
Series: |
WE-LAN Series Transformer |
Specifications: |
IEEE 802.3bt |
Turns Ratio: |
1CT:1CT |
Transformer Mounting: |
Surface Mount |
Application: |
10/100/1000 Base-T PoE |
Hipot Test: |
1500Vrms |
No. Of Ports: |
1 Port |
Inductance: |
350µH |
Isolation Voltage: |
1.5kV |
Operating Temperature: |
-40°C To +105°C |
Series: |
WE-LAN Series Transformer |
Specifications: |
IEEE 802.3bt |
Turns Ratio: |
1CT:1CT |
Transformer Mounting: |
Surface Mount |
Application: |
10/100/1000 Base-T PoE |
Hipot Test: |
1500Vrms |
No. Of Ports: |
1 Port |
Inductance: |
350µH |
Isolation Voltage: |
1.5kV |
Operating Temperature: |
-40°C To +105°C |
The 7490220122 WE-LAN is a rugged, surface-mount LAN transformer engineered for 10/100/1000BASE-T PHY interfaces with support for IEEE 802.3bt 4-pair PoE (4PPoE / PoE+). Designed for industrial and commercial networking equipment, it combines high isolation (1500 Vrms), robust common-mode rejection and industry-grade temperature tolerance (-40 °C to +105 °C), making it ideal for switches, routers, PoE injectors, and embedded Ethernet modules.
1. Operating Temperature: The transformer has an incredible operating temperature range of -40°C to +105°C. It performs reliably in extreme hot and cold conditions.
2 Hipot Test: Flexibility and quality comply with industry-standard 1500Vrms.
3. Compliance: The Ethernet Transformer is fully compliant with IEEE 802.3bt for 4PPoE. It ensures compatibility with the latest industry standards.
| Item | Description |
|---|---|
| Mounting Type | Surface Mount (SMT) |
| Package Size | 17.55 mm × 14.70 mm |
| Max Height (Seated) | 8.80 mm (0.346") |
| Operating Temperature | -40 °C to +105 °C |
| Storage Conditions | < 40 °C, < 75% RH (original packaging) |
| Moisture Sensitivity Level | MSL 1 |
| Packaging | Tape & Reel |
This PoE LAN transformer is suitable for PoE switches, injectors, and powered devices (PDs) where stable power delivery and signal integrity are critical.
(Test conditions: +20 °C, 33% RH unless otherwise specified)
| Parameter | Test Conditions | Value | Unit | Notes |
|---|---|---|---|---|
| Data Rate | — | 10/100/1000BASE-T | — | IEEE compliant |
| Turns Ratio | — | 1:1 | ±2% | Primary : Secondary |
| Inductance (OCL) | 100 kHz, 100 mV @ 24 mA | 350 | µH | min. |
| Insertion Loss | 1–100 MHz | ≤ -1.0 | dB | max. |
| Return Loss | 1–30 MHz | ≥ -18 | dB | min. |
| Return Loss | 30–60 MHz | ≥ -14 | dB | min. |
| Return Loss | 60–80 MHz | ≥ -12 | dB | min. |
| Return Loss | 80–100 MHz | ≥ -10 | dB | min. |
| Crosstalk | 1–60 MHz | ≤ -35 | dB | min. |
| Crosstalk | 60–100 MHz | ≤ -30 | dB | min. |
| Differential to CMR | 1–30 MHz | ≤ -40 | dB | min. |
| Differential to CMR | 30–60 MHz | ≤ -35 | dB | min. |
| Differential to CMR | 60–100 MHz | ≤ -30 | dB | min. |
| Isolation Voltage | 1 min | 1500 | Vrms | min. |
1. Compatible with mainstream Gigabit PHY chipsets (Broadcom, Marvell, Realtek, Microchip, TI, etc.)
2. Optimized for SMT Ethernet magnetics designs using discrete transformers
3. Recommended to follow standard Ethernet PCB layout guidelines for:
The 7490220122 WE-LAN 1000BASE-T SMT Transformer is a robust and proven solution for Gigabit Ethernet and PoE+ applications.
With its high isolation voltage, excellent EMI performance, PoE current capability, and industrial temperature rating, it is an ideal choice for engineers and sourcing professionals looking for a reliable LAN magnetics component in demanding networking environments.
