05.1
Samples
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LAN Transformer
WHS16002GM 10/100BASE-TX LAN Transformer
Single-port 10/100BASE-TX LAN transformer (Ethernet transformer): 16-pin SMD, 1500 Vrms isolation, not PoE rated. Operating temperature −55 to +150 °C.
- Data rate
- 10/100BASE-TX
- Ports
- Single port
- Mounting
- SMD
- Isolation voltage
- 1500 Vrms
- PoE
- Not PoE rated
- Operating temperature
- −55 to +150 °C
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01Specifications
WHS16002GM specifications
Key attributes
ParameterValue
Data rate
10/100BASE-TX
Ports
Single port
Operating temperature
−55 to +150 °C
PoE
Not PoE rated
Mounting
SMD
Pins
16
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.
WHS16002GMNeed samples, or a value that is not in this table? Ask our FAE team.
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02Applications
Where WHS16002GM is used
- Switches and routers
- Wireless access points
- IP cameras
- Industrial control devices
Typical application
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
- 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 →
- 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.
- 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
WHS16002GMNot sure it fits your PHY and layout? An engineer can check your design.
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03Documents
Datasheet, CAD and reports
-
WHS16002GM Datasheet (PDF)2024-11-25 · This part Download ↓
-
3D model (STEP)2025-10-29 · This part Download ↓
-
PCB Layout / Package2025-12-29 · This part Download ↓
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LAN Transformer Reliability TestLatest · Product family View →
-
LAN Transformer EU RoHS ReportLatest · Product family View →
-
REACH SVHC test reportLatest · Communication electronic components View →
WHS16002GMNeed another file format, or samples to test? Ask our FAE team.
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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 →
ISO certificates cover VOOHU's management systems. RoHS and REACH test reports cover tested samples of each product family.
05Ordering
Ordering and delivery
06Compare
Same-series Comparison
Red marks values that differ from this part; data from the published parameters of each part.
Data rate
10/100BASE-TX
10/100BASE-TX
10/100BASE-TX
Mounting
SMD
SMD
SMD
Ports
Single port
Single port
Single port
Pins
16
16
16
Pitch
1.27 mm
1.27 mm
1.27 mm
Operating temperature
−55 to +150 °C
−40 to +85 °C
−40 to +85 °C
Isolation voltage
1500 Vrms
1500 Vrms
1500 Vrms
PoE
Not PoE rated
4PPoE (up to 850 mA)
PoE+ (up to 720 mA)
WHS16002GMNot sure which part in the series fits? Ask our FAE team which one to sample.
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07FAQ
FAQ LAN Transformer: WHS16002GM
What is the operating temperature range of the WHS16002GM?
-55 °C to +150 °C, the widest in this catalogue.
For comparison, the common wide-temperature grade in the 10/100 BASE-T range is -40 °C to +85 °C and the automotive grade -40 °C to +125 °C. The WHS16002GM extends both ends. That grade addresses positions where ordinary wide-temperature parts do not survive — engine bays, downhole equipment, board positions beside high-temperature industrial processes. The deciding figure remains the measured temperature at the transformer's own location, not the ambient.
What is `Cww` in the WHS16002GM datasheet?
Inter-winding capacitance, stated on the WHS16002GM as 35 pF Max at 100 kHz and 0.1 V — the only part in this catalogue that lists it.
Inter-winding capacitance is the parasitic coupling between the chip side and the cable side. Isolation hipot governs whether the barrier withstands high voltage; inter-winding capacitance governs how much high-frequency common-mode noise crosses that barrier. The lower the figure, the less common-mode interference from the cable couples into the PHY side. Where EMC margin is tight, or radiated emissions are being estimated up front, this is a number that can be used directly.
WHS16002GM or WHS16002GA — how is the choice made?
Land pattern, outline, internal structure, cross talk and common-mode rejection are all the same; two things decide it — temperature range and stated qualification. The WHS16002GM is rated -55 °C to +150 °C and additionally states inter-winding capacitance; the WHS16002GA is rated -40 °C to +125 °C and states AEC-Q200 tested.
In short: the automotive claim points to the WHS16002GA, the more extreme temperature range to the WHS16002GM. The two cannot be had together, so tell us if a design needs both and we will confirm what is available.
08Support
Talk to an engineer
01Replace your current partSend the part number you use today. An engineer compares pinout, package and electrical ratings and lists the differences.Start a replacement review →
02Match it to your PHYTell us your PHY. We check center-tap wiring, termination and the matching RJ45 jack.Check my design →
03Link drops, hi-pot or EMC failuresSend the symptoms and test conditions. Get an FAE-reviewed troubleshooting checklist.Start troubleshooting →
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- VOOHU
- Founded in 2018
- Suzhou, China
- 1,500+ customers
- FAE support
Typical application
