WHD20701G Dual Ports DIP 10/100Base-TX PIN20 non-PoE LAN Transformer

Name: LAN Transformer_10/100Base-TX DIP Dual Ports_WHD20701G_VOOHU
Brand: VOOHU
SKU: WHD20701G

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WHD20701G Dual Ports DIP 10/100Base-TX PIN20 non-PoE LAN Transformer

Category: LAN Transformer

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Product Parameters

Data rate 10/100 Base-TX

Installation Method DIP

Ports Dual Ports

PIN 20

Pitch 2.0mm

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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Technical Support Email: fae.thorne@voohu.cn Phone: +86 400-1048-018

Quality Certifications

We strictly control product quality, including strict control of manufacturer qualifications, quality control processes and production process standards, and compliance with various certifications and safety standards. Currently, our products comply with industry standards and mainstream quality certifications, such as ISO 9001, ISO 14001, CE, RoHS, REACH, UL, etc.
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Customer Service Email: song.lei@voohu.cn Phone: +86 180 2130 1120

FAQ LAN Transformer: WHD20701G

Which dimensions must be used in full when creating the through-hole PCB footprint for WHD20701G, rather than relying only on '20PIN, 2.00 mm'?

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Use a 21.20 ± 0.50 mm × 10.00 ± 0.50 mm body, 7.20 mm maximum height, 2.00 mm pin pitch, 7.62 mm row spacing, 18.00 ± 0.20 mm longitudinal pin span, and 0.90 mm recommended hole diameter. '20PIN' describes only the number of pins; it does not establish compatible hole locations, row spacing, or body clearance.

Why must incoming inspection of the dual-port WHD20701G cover both ports?

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The two ports remain independent transmit and receive magnetic circuits within one package, so one port cannot represent the complete component. For each port, inspection may cover the 1CT:1CT ±5% turns ratio, minimum 350 μH open-circuit inductance at 100 kHz, 0.1 V, and 8 mA DC bias, maximum 0.5 μH leakage inductance, and maximum 1400 mΩ DC resistance. The quality plan determines the sampling ratio.

How should the wave-soldering profile of WHD20701G be converted into mass-production setup conditions?

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Establish the initial window in three steps: 1. Control preheating at 100-110 °C for 60-90 s. 2. Control peak soldering at 255-265 °C for 3-5 s. 3. Re-measure with thermocouples under the actual board thickness, copper-area, and carrier conditions, then inspect solder fill and bridging on all 20 pins. The profile is a component-side recommendation; solder-pot setpoints do not replace measured joint temperature.

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.

If you need further assistance, our technical support team is available to help evaluate your application requirements and recommend the most appropriate solution.