05.1
Samples
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LAN Transformer
WHS16002-1PTG 10/100BASE-TX PoE+ LAN Transformer
Single-port 10/100BASE-TX LAN transformer (Ethernet transformer): 16-pin SMD, 1500 Vrms isolation, PoE+ (up to 720 mA). Operating temperature −40 to +85 °C.
- Data rate
- 10/100BASE-TX
- Ports
- Single port
- Mounting
- SMD
- Isolation voltage
- 1500 Vrms
- PoE
- PoE+ (up to 720 mA)
- Operating temperature
- −40 to +85 °C
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01Specifications
WHS16002-1PTG specifications
Key attributes
ParameterValue
Data rate
10/100BASE-TX
Ports
Single port
Operating temperature
−40 to +85 °C
PoE
PoE+ (up to 720 mA)
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.
WHS16002-1PTGNeed samples, or a value that is not in this table? Ask our FAE team.
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02Applications
Where WHS16002-1PTG 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
WHS16002-1PTGNot sure it fits your PHY and layout? An engineer can check your design.
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03Documents
Datasheet, CAD and reports
-
WHS16002-1PTG 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 →
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LAN Transformer EU RoHS ReportLatest · Product family View →
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REACH SVHC test reportLatest · Communication electronic components View →
WHS16002-1PTGNeed 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
−40 to +85 °C
−55 to +150 °C
−40 to +85 °C
Isolation voltage
1500 Vrms
1500 Vrms
1500 Vrms
PoE
PoE+ (up to 720 mA)
Not PoE rated
4PPoE (up to 850 mA)
WHS16002-1PTGNot sure which part in the series fits? Ask our FAE team which one to sample.
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07FAQ
FAQ LAN Transformer: WHS16002-1PTG
Which PoE class does the 720 mA on the WHS16002-1PTG correspond to?
The datasheet states IEEE 802.3at compliant performance with 720 mA current capability.
802.3at is PoE+, where the PSE port tops out at 30 W. For 802.3bt Type 3 or Type 4 the WHS16002-1PTG is not the right part, and the figure cannot be extrapolated upward. When budgeting port power, tell us the per-port current you are targeting and VOOHU will confirm the applicable scope against the current controlled document. Higher-current parts sit in the Gigabit range.
Does PoE place the same demands on a 100M transformer as on a Gigabit one?
No — the difference is how many paths share the current: a 100M port has one pairset, a Gigabit port has two.
The WHS16002-1PTG holds two 1CT:1CT units, forming the two channels — one pairset — of a 100M port, where Gigabit parts give each port four channels across two pairsets. For the same port power, the current in a 100M part is concentrated in fewer paths, which is why current ratings on 100M PoE parts often read higher. Before comparing current figures across data rates, confirm both are stated on the same pairset basis.
The WHS16002-1PTG is a 100M part — why is insertion loss specified up to 125 MHz?
Because insertion and return loss are given as functions of frequency, and the formula covers up to 125 MHz, beyond the band a 100M link actually uses.
On the WHS16002-1PTG, insertion loss follows -0.2-0.002×f^1.4 dB Max over 1–125 MHz and return loss follows -10+20×log(f/80) dB Min over 40.1–100 MHz. The form matches the masks printed in PHY datasheets, so no conversion is needed when comparing. Most non-PoE parts in the 10/100 BASE-T range use fixed values per band instead.
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
