WHD40103G Quad Ports DIP 10/100Base-TX PIN40 non-PoE LAN Transformer

Name: LAN Transformer_10/100Base-TX DIP Quad Ports_WHD40103G_VOOHU
Brand: VOOHU
SKU: WHD40103G

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WHD40103G Quad Ports DIP 10/100Base-TX PIN40 non-PoE LAN Transformer

Category: LAN Transformer

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Product Parameters

Data rate 10/100 Base-TX

Installation Method DIP

Ports Quad Ports

PIN 40

Pitch 1.78mm

Operating Temperature 0 up to 70 °C

Vt (V (RMS)) 1500

PoE non-PoE

Solution

Ethernet

SPE

CAN

RS485

LVDS

Isolated SPI

PoE

Push-Pull Converter

Product Recommend

Network Connector (RJ45/RJ11)

POE Transformer

CHIP LAN

Common mode choke for signal line（Signal Line CMC）

TVS/ESD

PHY

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FAQ LAN Transformer: WHD40103G

How should the 40PIN package of WHD40103G be mapped to the PHY channels on a four-port board?

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Use the internal schematic to map each of the four transmit and receive winding groups to its PHY channel and front-panel port, and retain clear port numbering on the schematic. The four magnetic circuits are independent; do not infer TX/RX or center taps from pin order alone. On the first board, verify polarity, link establishment, and port-indicator logic for every port.

Which dimensions prevent the through-hole footprint of WHD40103G from sharing a conventional 40PIN IC footprint?

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WHD40103G is a long, quad-port magnetic module with an approximately 37.80 ± 0.50 mm × 7.80 ± 0.50 mm body and a maximum height of 11.00 mm. Pin pitch is 1.78 mm, row spacing is 4.80 mm, recommended hole diameter is 0.90 mm, and the longitudinal pin span is 33.82 mm. The same pin count does not make the hole pattern, row spacing, or outline compatible.

How should the wave-soldering window of WHD40103G be used during mass-production setup?

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Use preheating at 100-110 °C for 60-90 s and peak soldering at 255-265 °C for 3-5 s as the initial component-side window. Before mass production, measure temperature on the actual board with its real thickness, copper area, and carrier, and inspect all 40 pins for solder fill, bridging, and thermal shadowing. Solder-pot setpoints alone do not establish the component's actual thermal exposure.

What Certifications Does VOOHU Hold?

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VOOHU is certified to ISO 9001:2015 and ISO 14001:2015 standards. Our products comply with RoHS, REACH, and CE requirements, ensuring high quality, environmental compliance, and reliable performance for global markets.

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You can quickly identify the most suitable product by using the Product Selector on our website to filter products based on key specifications such as data rate, package type, operating temperature, and current rating. You can also visit our Solutions page to explore recommended products for your specific application.

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