06.1
Samples
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LAN Transformer
WHSG24F01ATG Gigabit LAN Transformer
Single-port 10/100/1000BASE-T LAN transformer (Ethernet transformer): 24-pin SMD, 1500 Vrms isolation, not PoE rated. Operating temperature −40 to +85 °C.
- Data rate
- 10/100/1000BASE-T
- Ports
- Single port
- Mounting
- SMD
- Isolation voltage
- 1500 Vrms
- PoE
- Not PoE rated
- Operating temperature
- −40 to +85 °C
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Product Datasheet
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Alternative PartsAlternative to Pulse Electronics H5008NL
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01Specifications
WHSG24F01ATG specifications
Key attributes
ParameterValue
Data rate
10/100/1000BASE-T
Ports
Single port
Operating temperature
−40 to +85 °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.
WHSG24F01ATGNeed samples, or a value that is not in this table? Ask our FAE team.
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02Cross reference
WHSG24F01ATG as an alternative to Pulse Electronics H5008NL
VOOHU WHSG24F01ATG can replace Pulse Electronics H5008NL. See the evaluation reports below for details.
BrandPart No.CompatibilityKey differencesEvidence
BrandPulse Electronics
Part No.H5008NL
CompatibilityReplacement
Key differences—
EvidenceEvaluation report →
Based on VOOHU replacement evaluations. Check both datasheets and validate with samples before switching.
03Applications
Where WHSG24F01ATG 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
WHSG24F01ATGNot sure it fits your PHY and layout? An engineer can check your design.
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04Documents
Datasheet, CAD and reports
-
WHSG24F01ATG Datasheet (PDF)2024-11-25 · This part Download ↓
-
3D model (STEP)2026-06-10 · 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 →
WHSG24F01ATGNeed another file format, or samples to test? Ask our FAE team.
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05Quality
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.
06Ordering
Ordering and delivery
07Compare
Same-series Comparison
Red marks values that differ from this part; data from the published parameters of each part.
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
−40 to +85 °C
−40 to +85 °C
0 to +70 °C
Isolation voltage
1500 Vrms
1500 Vrms
3000 Vrms
PoE
Not PoE rated
PoE++ (up to 900 mA)
Not PoE rated
WHSG24F01ATGNot sure which part in the series fits? Ask our FAE team which one to sample.
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08FAQ
FAQ LAN Transformer: WHSG24F01ATG
Does the WHSG24F01ATG support PoE?
The datasheet carries no PoE current item, so the WHSG24F01ATG should not be selected as a PoE part and its port has to be powered locally.
A design needing power over the cable has to change part at selection time — the centre taps carry no DC current rating, and no amount of circuit rework adds the capability afterwards. Among the 24-pin single-port surface-mount parts, one prints both 360 mA per channel and 720 mA full channels, which removes the guesswork from a port power budget.
What is the difference between the WHSG24F01ATG and the WHSG24015G?
The temperature grade: the WHSG24F01ATG is rated -40 °C to +85 °C, the WHSG24015G 0 °C to +70 °C.
Inductance, DC resistance, turns ratio, insertion and return loss, cross talk, common-mode rejection and isolation match value for value, and neither carries PoE. Choose the WHSG24F01ATG where the equipment powers up below 0 °C or runs above +70 °C for long stretches; in a temperature-controlled indoor setting either will do.
How is the WHSG24F01ATG supplied, and how many to a reel?
On tape and reel, 500 pieces per ø330 mm reel; two reels to an inner carton for 1000 pieces, and five inner cartons to an export carton for 5000 pieces.
The WHSG24F01ATG is a surface-mount part assembled by reflow. Reel counts are not uniform across packages in the 100/1000 BASE-T range — another 24-pin single-port part ships 800 pieces to a reel — so plan production and material against this part's own figure.
09Support
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
