LINK-PP INT'L TECHNOLOGY CO., LIMITED
| Product Category | Discrete Magnetic Transformers |
| Mounting Style | Surface Mount (SMT) |
| Packaging | Tape & Reel (T&R) |
| Payment Terms | TT,NET30/60/90 Days |
| Supply Ability | 5KK/Month |
| Delivery Time | Stock |
| Packaging Details | T&R |
| Inductance (OCL) | 350µH Min (@ 8mA DC Bias) |
| Pin Count | 16 Pins |
| Ethernet Speed | 10/100Base-T (Fast Ethernet) |
| Isolation Voltage | 1500 Vrms |
| Part Number | LFE8657 |
| Number of Ports | 1 Port |
| Operating Temperature | 0°C ~ 70°C (Standard) |
| Brand Name | LINK-PP |
| Model Number | LFE8657 |
| Certification | UL,RoHS,Reach,ISO |
| Place of Origin | Guangdong,China |
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Product Specification
| Product Category | Discrete Magnetic Transformers | Mounting Style | Surface Mount (SMT) |
| Packaging | Tape & Reel (T&R) | Payment Terms | TT,NET30/60/90 Days |
| Supply Ability | 5KK/Month | Delivery Time | Stock |
| Packaging Details | T&R | Inductance (OCL) | 350µH Min (@ 8mA DC Bias) |
| Pin Count | 16 Pins | Ethernet Speed | 10/100Base-T (Fast Ethernet) |
| Isolation Voltage | 1500 Vrms | Part Number | LFE8657 |
| Number of Ports | 1 Port | Operating Temperature | 0°C ~ 70°C (Standard) |
| Brand Name | LINK-PP | Model Number | LFE8657 |
| Certification | UL,RoHS,Reach,ISO | Place of Origin | Guangdong,China |
| High Light | LFE8657 ，10/100Base-T Transformer ，SMT Magnetic Transformer | ||
The LFE8657 is a premium-grade, single-port Discrete Magnetic Ethernet Transformer designed and manufactured by LINK-PP. Engineered for 10/100Base-T (Fast Ethernet) physical layer (PHY) applications, this surface-mount (SMT) component seamlessly integrates isolation transformers and common-mode chokes into a compact 16-pin footprint.
Serving as a highly reliable interface between the PHY transceiver and the RJ45 connector, the LFE8657 ensures exceptional signal integrity while providing critical 1500Vrms electrical isolation. It is an industry-standard component, widely recognized as a direct drop-in replacement (cross-reference) for other mainstream 10/100M magnetics, making it an ideal choice for hardware designers and procurement managers looking to optimize their BOM (Bill of Materials) without compromising on quality.
| Feature | Specification |
| Brand | LINK-PP |
| Part Number (MPN) | LFE8657 |
| Product Type | Discrete Ethernet Magnetic Transformer |
| Data Rate | 10/100 Base-T (Fast Ethernet) |
| Port Configuration | 1 Port (Single) |
| Mounting Style | Surface Mount Technology (SMT) / 16 Pins |
| Packaging | Tape & Reel (T&R) |
| Parameter | Value |
| Turns Ratio (TX / RX) | 1CT : 1CT ±2% / 1CT : 1CT ±2% |
| Inductance (OCL) | ≥ 350µH (@ 100kHz / 0.1V, 8mA DC BIAS) |
| HiPot (Isolation Voltage) | 1500 Vrms (Input to Output, for 60 seconds) |
| Insertion Loss | -1.1 dB MAX (0.3 MHz to 100 MHz) |
| Return Loss (MIN) | -18 dB (0.3~30 MHz) | -12 dB (@ 80 MHz) |
| Common Mode Rejection (CMRR) | -30 dB MIN (0.3 MHz to 100 MHz) |
| Crosstalk | -30 dB MIN (0.3 MHz to 100 MHz) |
Thanks to its compact SMT footprint and robust electrical performance, the LFE8657 is widely deployed across various industries:
A: No, the LFE8657 is specifically designed for 10/100Base-T (Fast Ethernet) applications. For 1000Base-T (Gigabit) speeds, a 24-pin transformer module is required.
A: Yes. The LFE8657 is a Pin-to-Pin (P2P) drop-in replacement for the LP1302NL. They share the identical 16-pin SMT footprint, schematic, and 10/100M electrical specifications.
A: Yes, the LFE8657 integrates common-mode chokes on both the transmit (TX) and receive (RX) channels to effectively suppress EMI noise.
A: To facilitate automated SMT assembly, the LFE8657 is supplied in standard Tape and Reel (T&R) packaging.
A: Yes, we provide comprehensive engineering support, including detailed PDF datasheets, PCB footprints, and 3D models (STEP/STP formats) for your ECAD software.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1997
Total Annual:
$30-$50 million
Employee Number:
300~600
Ecer Certification：
Verified Supplier
LINK-PP International Technology Co., Limited, founded in 1997, is a vertically integrated manufacturer specializing in Ethernet magnetic components and high-speed connectivity solutions up to 10G. With over 26 years of experience, our core products include RJ45 modular jacks, MagJacks, discrete m... LINK-PP International Technology Co., Limited, founded in 1997, is a vertically integrated manufacturer specializing in Ethernet magnetic components and high-speed connectivity solutions up to 10G. With over 26 years of experience, our core products include RJ45 modular jacks, MagJacks, discrete m...
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