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WHSQ24706-2PTG Single Port SMD 2.5G/5G PIN24 LAN Transformer
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LAN Transformer

WHSQ24706-2PTG 2.5G/5GBASE-T 4PPoE LAN Transformer

Single-port 2.5G/5GBASE-T LAN transformer (Ethernet transformer): 24-pin SMD, 1500 Vrms isolation, 4PPoE (up to 1200 mA). Operating temperature −40 to +85 °C.

Data rate
2.5G/5GBASE-T
Ports
Single port
Mounting
SMD
Isolation voltage
1500 Vrms
PoE
4PPoE (up to 1200 mA)
Operating temperature
−40 to +85 °C
WHSQ24706-2PTG LAN Transformer perspective view

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01Specifications

WHSQ24706-2PTG specifications

Key attributes

ParameterValue
Data rate 2.5G/5GBASE-T
Ports Single port
Operating temperature −40 to +85 °C
PoE 4PPoE (up to 1200 mA)
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.

WHSQ24706-2PTGNeed samples, or a value that is not in this table? Ask our FAE team. Get a Quote or Samples + Add to Inquiry

02Applications

Where WHSQ24706-2PTG is used

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

Typical application

Ethernet PHYWHSQ24706-2PTGRJ45 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

WHSQ24706-2PTGNot sure it fits your PHY and layout? An engineer can check your design. Get a Quote or Samples + Add to Inquiry
  • WHSQ24706-2PTG Datasheet (PDF)2024-11-25 · 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 →
WHSQ24706-2PTGNeed 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 WHSQ24706-2PTGThis part WHSQ24706G WHSQ48001G
Data rate 2.5G/5GBASE-T 2.5G/5GBASE-T 2.5G/5GBASE-T
Mounting SMD SMD SMD
Ports Single port Single port Dual port
Pins 24 24 48
Pitch 1.27 mm 1.27 mm 1.02 mm
Operating temperature −40 to +85 °C 0 to +70 °C 0 to +70 °C
Isolation voltage 1500 Vrms 1500 Vrms 1500 Vrms
PoE 4PPoE (up to 1200 mA) Not PoE rated Not PoE rated
WHSQ24706-2PTGNot 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: WHSQ24706-2PTG

How much current can the centre taps of the WHSQ24706-2PTG carry?

The WHSQ24706-2PTG carries 1200 mA of DC balance current in each magnetic channel, and its datasheet rates the device at 60 W for PoE. That figure applies to each channel on its own: it is not a total across the port's two channels and must not be multiplied by the coil count to produce a port current.

The datasheet names no IEEE 802.3 clause, so VOOHU states the current and wattage capability of the WHSQ24706-2PTG rather than compliance with a standard. The power finally available at the powered device also depends on the PSE, the cabling and the thermal design of the finished equipment. Other options are listed in the 2.5G/5G BASE-T range.

Up to what frequency is the WHSQ24706-2PTG specified?

The insertion loss, return loss, crosstalk and common-mode rejection of the WHSQ24706-2PTG are all specified only up to 200 MHz. Other parts sharing the same footprint carry those same four items to 250 MHz, so check the frequency ceiling before comparing figures between them, or limits taken from different bands end up side by side.

Above 200 MHz the WHSQ24706-2PTG has no published limit. Where a qualification plan has to cover a higher band, ask VOOHU for measured data on this part rather than inferring it from a part specified to a higher ceiling.

Is the 150 µH OCL of the WHSQ24706-2PTG measured with DC applied?

Yes. The 150 μH minimum of the WHSQ24706-2PTG is quoted at 100 kHz and 0.1 V with a 14 mA DC bias applied. That bias is a direct current superimposed during the inductance measurement, so that the figure reflects the core with a DC component present. It is not the same quantity as the 1200 mA of DC balance current the WHSQ24706-2PTG carries in each channel, the two cannot be converted into one another, and the bias is not a permitted operating current.

The WHSQ24702-1PTG shares the footprint and also quotes a 150 μH minimum, but publishes no bias condition, so the two minima do not sit on the same measurement basis and should not be compared directly.

08Support

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  • Founded in 2018
  • Suzhou, China
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