B78476A8247A003 10/100Base-T 16PIN Ethernet Magnetics Module SMD
B78476A8247A003 LAN magnetics module for 10/100Base-T Ethernet. Single-port SMD transformer with 350µH inductance, low insertion loss, 1500VAC isolation, and −40°C to +85°C operating range.
General Specifications of B78476A8247A003 LAN Magnetics
| Parameter | Specification |
|---|---|
| Part Number | B78476A8247A003 |
| Product Type | LAN Magnetics Module |
| Ethernet Standard | 10/100Base-T |
| Number of Ports | Single Port |
| Package Type | Surface Mount (SMD) |
| Core Material | Ferrite Toroid |
| Isolation Voltage | 1500 VAC |
| Operating Temperature | −40 °C to +85 °C |
| Weight | Approx. 0.8 g |
| Compliance | IEEE 802.3, RoHS |
Electrical Characteristics (@25 °C)
| Parameter | Test Condition | Specification |
|---|---|---|
| Turns Ratio (Primary : Secondary) | — | 1CT : 1CT ±3% |
| Inductance (OCL) | 100 kHz, 100 mV, 8 mA DC Bias | ≥ 350 µH |
| Voltage Test | 50 Hz, 1 min | 1500 V AC |
| Insertion Loss | 0.1 – 100 MHz | ≤ −1.0 dB |
| Return Loss | 1 – 30 MHz | ≥ 18 dB |
| Return Loss | 40 MHz | ≥ 16 dB |
| Return Loss | 50 MHz | ≥ 14 dB |
| Return Loss | 60 – 80 MHz | ≥ 12 dB |
| Crosstalk | 30 MHz | ≥ −43 dB |
| Crosstalk | 60 MHz | ≥ −37 dB |
| Crosstalk | 100 MHz | ≥ −33 dB |
| Differential-to-Common Mode Rejection (DCMR) | 30 MHz | ≥ −43 dB |
| Differential-to-Common Mode Rejection (DCMR) | 60 MHz | ≥ −37 dB |
| Differential-to-Common Mode Rejection (DCMR) | 100 MHz | ≥ −33 dB |
Environmental Specifications
| Parameter | Specification |
|---|---|
| Operating Temperature | −40 °C to +85 °C |
| Storage Temperature | −40 °C to +85 °C |
| Soldering Standard | IPC / JEDEC J-STD-020D |
| RoHS | Compatible |
Key Features of B78476A8247A003 16PIN Ethernet Magnetics
The B78476A8247A003 LAN magnetics module is a single-port 10/100Base-T Ethernet transformer designed for LAN interface applications requiring reliable signal isolation and EMI suppression.
This surface-mount LAN transformer module integrates high-performance magnetics optimized for Ethernet PHY interfaces. With 350 µH minimum inductance, low insertion loss, and excellent crosstalk suppression, the module ensures stable data transmission in Fast Ethernet networks.
Designed for industrial and networking equipment, the B78476A8247A003 supports a wide operating temperature range from −40 °C to +85 °C, making it suitable for demanding environments such as industrial automation systems, networking infrastructure, and embedded communication devices.
- Designed for 10/100Base-T Ethernet applications
- Single-port LAN magnetics module
- Surface-mount (SMD) package
- Ferrite toroid core with UL94-V0 housing and potting
- 350 µH minimum inductance
- Low insertion loss for improved signal integrity
- Excellent crosstalk and noise suppression
- 1500 VAC isolation voltage
- Extended industrial temperature range −40 °C to +85 °C
- RoHS compatible
- Compliant with IEEE 802.3 Ethernet standard
B78476A8247A003 Drawing
1. B78476A8247A003 Dimensional Drawing
2. B78476A8247A003 Pin Drawing
FAQs About B78476A8247A003 Magnetics Module
1. What is a LAN magnetics module used for?
A LAN magnetics module provides electrical isolation, impedance matching, and noise suppression between the Ethernet PHY and the network cable to ensure reliable Ethernet communication.
2. What Ethernet standard does B78476A8247A003 support?
The module is designed for 10Base-T and 100Base-TX Ethernet applications compliant with the IEEE 802.3 standard.
3. What isolation voltage does the transformer provide?
The device provides 1500 VAC isolation, ensuring electrical safety and signal integrity in Ethernet networks.
4. What temperature range does the module support?
The B78476A8247A003 supports an extended industrial operating temperature range from −40 °C to +85 °C.
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