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WHSQ24702G Single Port SMD 2.5G/5G PIN24 LAN Transformer
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LAN Transformer

WHSQ24702G 2.5G/5GBASE-T LAN Transformer

Single-port 2.5G/5GBASE-T LAN transformer (Ethernet transformer): 24-pin SMD, 1500 Vrms isolation, not PoE rated. Operating temperature 0 to +70 °C.

Data rate
2.5G/5GBASE-T
Ports
Single port
Mounting
SMD
Isolation voltage
1500 Vrms
PoE
Not PoE rated
Operating temperature
0 to +70 °C
WHSQ24702G LAN Transformer perspective view

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01Specifications

WHSQ24702G specifications

Key attributes

ParameterValue
Data rate 2.5G/5GBASE-T
Ports Single port
Operating temperature 0 to +70 °C
PoE Not PoE rated
Mounting SMD
Pins 24
Pitch 1.27 mm

Electrical

ParameterValue
Isolation voltage 1500 Vrms

Values from published data for this part (parameters, FAQ and evaluation report). The datasheet prevails.

WHSQ24702GNeed samples, or a value that is not in this table? Ask our FAE team. Get a Quote or Samples + Add to Inquiry

02Applications

Where WHSQ24702G is used

  • Switches and routers
  • Wireless access points
  • IP cameras
  • Industrial control devices

Typical application

Ethernet PHYWHSQ24702GRJ45 jackTD+1 TX+TD−2 TX−RD+3 RX+RD−6 RX−ESD / TVS (optional)TX · 1CT:1CTRX · 1CT:1CTCTCTPHY-side CT: bias per PHY typeR1 75 ΩR2 75 ΩC1 1000 pF / 2 kVBob Smith terminationShield to chassis

The transformer isolates the PHY from the cable and couples the TX and RX differential pairs to the RJ45 jack.

Center-tap biasing on the PHY side depends on the PHY type (voltage-mode or current-mode).

Typical application for reference. Follow the PHY vendor's reference design.

Design notes

  1. 01Connect the center taps according to your PHY type.Voltage-mode and current-mode PHYs need different center-tap biasing; a mismatch can break auto-negotiation.Check with your PHY →
  2. 02Terminate the line-side center taps with a Bob Smith network.It gives common-mode noise a defined path to chassis ground and helps EMC.
  3. 03Add line-side surge protection for outdoor or long-cable ports.Residual surge energy through the transformer can still damage the PHY.Troubleshooting guide →

Reference designs by application:Industrial ControlSecurity MonitoringData Communication

WHSQ24702GNot sure it fits your PHY and layout? An engineer can check your design. Get a Quote or Samples + Add to Inquiry
  • WHSQ24702G Datasheet (PDF)2025-10-22 · This part Download ↓
  • 3D model (STEP)2026-06-24 · This part Download ↓
  • PCB Layout / Package2025-12-29 · This part Download ↓
  • LAN Transformer Reliability TestLatest · Product family View →
  • LAN Transformer EU RoHS ReportLatest · Product family View →
  • REACH SVHC test reportLatest · Communication electronic components View →
WHSQ24702GNeed another file format, or samples to test? Ask our FAE team. Get a Quote or Samples + Add to Inquiry

04Quality

Quality and compliance

DocumentNo.Issued / tested byDateApplies toActions
Certificate Certificate · Company ISO 9001:2015No. 19826Q02503R101 Quality management systemBeijing Xinjiyuan Certification Co., Ltd.Valid 2026-10-17 to 2029-10-16
19826Q02503R101 Beijing Xinjiyuan Certification Co., Ltd. Valid2026-10-17 to 2029-10-16 Company View PDF → Verify → Scope: R&D and sales of precision electronic connectors
Certificate Certificate · Company ISO 14001:2015No. 19826E01323R101 Environmental management systemBeijing Xinjiyuan Certification Co., Ltd.Valid 2026-10-17 to 2029-10-16
19826E01323R101 Beijing Xinjiyuan Certification Co., Ltd. Valid2026-10-17 to 2029-10-16 Company View PDF → Verify → Scope: R&D and sales of precision electronic connectors
Test report Test report · LAN transformers EU RoHSNo. WTH26H06190301C 2011/65/EU and (EU) 2015/863, 10 substancesWaltek Testing Group HCT (Shenzhen) Co., Ltd.Issued 2026-07-31
WTH26H06190301C Waltek Testing Group HCT (Shenzhen) Co., Ltd. Issued2026-07-31 LAN transformers View PDF →
Test report Test report · Communication electronic components REACH SVHCNo. WTH26H06167853C 253 substancesWaltek Testing Group HCT (Shenzhen) Co., Ltd.Issued 2026-07-01
WTH26H06167853C Waltek Testing Group HCT (Shenzhen) Co., Ltd. Issued2026-07-01 Communication electronic components View PDF →
Test report Test report · Product family Reliability test report
— — — Product family View PDF →

ISO certificates cover VOOHU's management systems. RoHS and REACH test reports cover tested samples of each product family.

05Ordering

Ordering and delivery

05.1

Samples

Samples are available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project.

Get a Quote or Samples →

06Compare

Same-series Comparison

Red marks values that differ from this part; data from the published parameters of each part.

Parameter WHSQ24702GThis part WHSQ24701G WHSQ24702-1PTG
Data rate 2.5G/5GBASE-T 2.5G/5GBASE-T 2.5G/5GBASE-T
Mounting SMD SMD SMD
Ports Single port Single port Single port
Pins 24 24 24
Pitch 1.27 mm 1.27 mm 1.27 mm
Operating temperature 0 to +70 °C 0 to +70 °C −40 to +85 °C
Isolation voltage 1500 Vrms 1500 Vrms 1500 Vrms
PoE Not PoE rated Not PoE rated PoE+ (up to 720 mA)
WHSQ24702GNot sure which part in the series fits? Ask our FAE team which one to sample. Get a Quote or Samples + Add to Inquiry

07FAQ

FAQ LAN Transformer: WHSQ24702G

Does the WHSQ24702G support PoE?

No. The datasheet of the WHSQ24702G assigns no DC balance current capability to the centre taps – there is no current item among its eleven electrical entries, so the taps cannot be used as a supply path. Terminate the centre taps as the reference design for the target PHY requires.

Where the port has to deliver power, the WHSQ24702-1PTG publishes 720 mA per magnetic channel and the WHSQ24706-2PTG publishes 1200 mA, both in the same footprint as the WHSQ24702G, so neither needs a board change. Both are also wide-temperature parts with a different operating range, so check the steady current and the temperature range of the target port first.

How do I choose between the WHSQ24702G and the WHSQ24706G?

There is no published difference to choose on: the WHSQ24702G and the WHSQ24706G share operating and storage temperature, an OCL of 200 μH minimum with no stated DC bias, DCR, segmented insertion and return loss, crosstalk, common-mode rejection, the isolation test, body size, pad layout, reel quantity, reflow profile and MSL rating, and neither supports PoE. The decision therefore sits outside the electrical block.

Ask VOOHU what actually separates the two part numbers, and whether they are interchangeable, before treating either as a substitute for the WHSQ24702G. Until that is confirmed, do not list them as alternates in an AVL; otherwise decide on availability and on what is already in the bill of materials.

What equipment is the WHSQ24702G suited to?

The WHSQ24702G suits indoor single-port 2.5G/5G equipment where the component temperature stays between 0 °C and +70 °C. The WHSQ24702G is a 24-pin single-port SMD 2.5G/5G BASE-T transformer without PoE, so the port is powered by the equipment itself. Typical uses are ordinary switch ports indoors, NAS and workstation network cards, and set-top or media playback devices.

Its limits are written the 2.5G/5G way, with segmented insertion and return loss and with crosstalk and common-mode rejection quoted to 250 MHz. Where the component temperature falls outside that band, or the port has to deliver power, send VOOHU the temperature range and the steady current expected in each centre-tap path. Other options are listed in the 2.5G/5G BASE-T range.

08Support

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  • VOOHU
  • Founded in 2018
  • Suzhou, China
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