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WHSG24R05N0 Single Port SMD Gigabit Base-T PIN24 LAN Transformer
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LAN Transformer

WHSG24R05N0 Gigabit LAN Transformer

Single-port 10/100/1000BASE-T LAN transformer (Ethernet transformer): 24-pin SMD, 1500 Vrms isolation, not PoE rated. Operating temperature 0 to +70 °C.

Data rate
10/100/1000BASE-T
Ports
Single port
Mounting
SMD
Isolation voltage
1500 Vrms
PoE
Not PoE rated
Operating temperature
0 to +70 °C
WHSG24R05N0 LAN Transformer perspective view

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01Specifications

WHSG24R05N0 specifications

Key attributes

ParameterValue
Data rate 10/100/1000BASE-T
Ports Single port
Operating temperature 0 to +70 °C
PoE Not PoE rated
Mounting SMD
Pins 24
Pitch 1.0 mm

Electrical

ParameterValue
Isolation voltage 1500 Vrms

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

WHSG24R05N0Need samples, or a value that is not in this table? Ask our FAE team. Get a Quote or Samples + Add to Inquiry

02Applications

Where WHSG24R05N0 is used

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

Typical application

Ethernet PHYWHSG24R05N0RJ45 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

WHSG24R05N0Not sure it fits your PHY and layout? An engineer can check your design. Get a Quote or Samples + Add to Inquiry
  • WHSG24R05N0 Datasheet (PDF)2025-07-21 · 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 →
WHSG24R05N0Need 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 WHSG24R05N0This part WHSG24301T1 WHSG24705N0
Data rate 10/100/1000BASE-T 10/100/1000BASE-T 10/100/1000BASE-T
Mounting SMD SMD SMD
Ports Single port Single port Single port
Pins 24 24 24
Pitch 1.0 mm 1.27 mm 1.27 mm
Operating temperature 0 to +70 °C −20 to +105 °C 0 to +70 °C
Isolation voltage 1500 Vrms 1500 Vrms 1500 Vrms
PoE Not PoE rated Not PoE rated Not PoE rated
WHSG24R05N0Not 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: WHSG24R05N0

Are the WHSG24R05N0 and the WHSG24015G interchangeable?

The land pattern carries over and the electrical ratings match; height differs by a factor of two. The WHSG24R05N0 stands 8.25 mm ±0.50 mm against 4.00 mm ±0.50 mm for the WHSG24015G, while both share a 15.10 × 7.10 mm plan, 1.00 mm pitch, 11.00 mm span and 0.10 mm coplanarity.

A change therefore needs no pad work, only a re-check of chassis clearance and of whatever routing or airflow passes above the part. Neither carries PoE.

The WHSG24R05N0 states DC resistance as 1.4 Ω while other parts state 1400 mΩ — are these the same?

The same value in two notations.

The WHSG24R05N0 datasheet reads DCR: 1.4Ω Max where most parts in the 100/1000 BASE-T range read 1400mΩ Max; the two are exactly equivalent. Normalise to one unit when building a comparison table or entering data into an ERP, and do not read the difference in notation as a difference in grade.

Does the WHSG24R05N0 support PoE?

The datasheet carries no PoE current item, so the WHSG24R05N0 should not be selected as a PoE part and its port has to be powered locally.

Its drawing labels pin numbers only, without net names or Chip Side / Cable Side markings, so termination and grounding follow the target PHY's reference design. Where power over the cable is needed, other 24-pin single-port parts state both the per-channel and full-channel currents — see the 100/1000 BASE-T range.

08Support

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