Output rail first
WHTS15EF1665U is listed for 3.3 V, WH13F-50L for 5 V, WH13F-12L for 12 V and WH13F-24L for 24 V. Start from the rail that carries most of your device’s load.
Transformer products
EFD15 PoE Power Transformers
Start with the supply voltage your device needs. Compare EFD15 candidates for 5 V, 12 V and 24 V reference outputs; ask the FAE to review 3.3 V or other requirements. For isolated DC/DC power in PoE powered devices, check the controller, windings and board space. Know the part? Request samples or a quote directly.
Part number search & selector
Find EFD15 PoE Power Transformers part numbers
Filter EFD15 PoE transformers by package size, power, output voltage and current.
* Frozen Image and Part Number columns · drag horizontally to review all specifications
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| Image | Part number | Datasheet | Compare | Downloads | Package Size | Power (W) | Output Voltage (V) | Output Current (A) | Sample |
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WHTS15EF1665U | SPEC | EFD15 Series | 10W | 3.3V | 3A |
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WH13F-50L | SPEC | EFD15 Series | 13W | 5V | ≥ 2A |
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WH13F-24L | SPEC | EFD15 Series | 13W | 24V | 0.41A~1.0A |
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WH13F-12L | SPEC | EFD15 Series | 13W | 12V | 1.08A~1.99A |
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Product family quick links
Start with Package Size
Counts reflect the current published product data.
Series overview
Picking an EFD15 PoE transformer
An EFD15 PoE transformer, also called an EFD15 PoE power transformer, steps port power down to the supply rail inside the isolated DC-DC converter of a PoE powered device. Each part has one main output: 3.3 V at 10 W, or 5 V, 12 V or 24 V at 13 W. EP13 PoE transformers offer the same 13 W outputs in an EP core.
Current at 13 W
WH13F-50L, WH13F-12L and WH13F-24L are listed at 13 W, so current rises as voltage falls: 0.41–1.0 A at 24 V, 1.08–1.99 A at 12 V and ≥ 2 A at 5 V.
The 3.3 V option
WHTS15EF1665U is listed at 10 W with a 3 A output at 3.3 V. Other EFD15 parts are listed at 13 W. Have our FAE team confirm it for your load.
Controller fit
Shortlist by rail, then match the converter: turns ratio and conditions on the EFD15 transformer datasheet must suit your controller. A bias or auxiliary winding, where shown, powers the controller.
Applications
EFD15 PoE transformer use cases
Pick the EFD15 PoE transformer by your powered device’s rail.
3.3 V controllers and gateways
Embedded controllers, IoT gateways and sensor hubs with 3.3 V logic can take their main rail from WHTS15EF1665U, listed at 3.3 V and 3 A, without an extra conversion stage.
PoE splitter outputs
Splitters powering a non-PoE camera or USB device need a fixed 5 V or 12 V output. WH13F-50L (5 V) and WH13F-12L (12 V), both listed at 13 W, cover these.
Room controllers and actuators
Room controllers and valve actuators with a 24 V supply can take it from WH13F-24L, listed for 24 V at 13 W, so a single PoE cable replaces separate power wiring.
Downloads & technical resources
EFD15 PoE transformer datasheets and footprints
Search a part number for the EFD15 transformer datasheet, 3D model and footprint, then check winding connections.
Showing representative available file sets. Search to find a specific SKU.
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- PDF datasheets listed
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- 3D file sets listed
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- PCB footprints listed
VOOHU’s published product content is reviewed by its engineering team. Specifications, downloads and technical support information are tied to specific part numbers, so you can verify them before requesting samples or a quotation.
Sourcing
Getting EFD15 PoE transformers from VOOHU
VOOHU is a manufacturer of EFD15 PoE transformers, with its own magnetics factory in Mianyang. Each part on this page has a datasheet, 3D model and PCB footprint to download.
Discuss a new design
Contact FAE for a replacement assessment.
Already have a part number? Request samples or a quote.
Samples and quotations
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. Quotations need the part number and quantity; typical lead time is 7–10 days.
Replacing an existing transformer
Send the part number and datasheet of the transformer you want to replace. Our FAE team compares output rail, power, windings and footprint, then suggests EFD15 candidates for you to validate with samples before production.
Quality
VOOHU is ISO 9001 and ISO 14001 certified. VOOHU’s PoE transformers are RoHS and REACH compliant (third-party test reports). Since 2018 VOOHU has supplied more than 1,500 customers, including 150+ listed companies.
FAQ & related guides
EFD15 PoE transformer FAQ
Answers on manufacturing, splitting rails and EFD15 versus EP13.
How do I start EFD15 selection for a 3.3 V, 5 V, 12 V or 24 V output?
Start with WH13F-50L for the 5 V reference output, WH13F-12L for 12 V or WH13F-24L for 24 V. Ask the FAE to confirm candidates and conditions for 3.3 V. Then review input, load, controller and windings. These are not four adjustable outputs from one transformer.
What PCB winding connections matter for WH13F-24L?
Its datasheet requires the primary windings and secondary windings to be connected in parallel on the PCB as shown. Check pins, polarity and specified connections; do not treat parallel windings as independent outputs. Bias has a different function. Review the complete schematic rather than inferring connections from shape or output voltage.
Can I treat an EFD15 current range as its rated current?
No. A range or “≥” label is a filter category, not a guarantee of continuous operation at its upper boundary. Provide continuous load, peak duration and ambient temperature for datasheet review. Ask for FAE support if exact current conditions are not yet available.
Can another EFD15 output design use my existing footprint?
Check the exact drawing rather than relying on the family name or a shared model. Review pin functions, windings, polarity, pad orientation, dimensions and safety spacing. Mechanical fit does not establish electrical compatibility. Include existing PCB constraints in the replacement request.
Can I ask for help before all EFD15 design information is ready?
Yes. For a known part, send quantity, destination and requested delivery date for samples or a quote. Otherwise, share available input/output, load and space requirements. For replacement work, add the original part and documents; sales coordinates the remaining checks with the FAE.
Is VOOHU the manufacturer of these EFD15 PoE transformers?
Yes. VOOHU manufactures them in its own magnetics factory in Mianyang, China. For each EFD15 PoE transformer on this page you can download the datasheet, 3D model and PCB footprint, and request samples for evaluation.
Can one EFD15 PoE transformer feed 5 V and 12 V loads?
Each EFD15 PoE transformer is listed for one main output, such as WH13F-50L for 5 V or WH13F-12L for 12 V. For both rails, a common approach takes 12 V from the transformer and derives 5 V with a buck regulator.
How does WH13F-12L compare with the EP13 part WH13P-12L?
Both are listed at 13 W with a 12 V output in the 1.08–1.99 A band: WH13F-12L here, WH13P-12L on the EP13 PoE transformer page. Their cores differ, so compare drawings and board space first.
Engineer support
EFD15 PoE transformer samples and support
Send the candidate part number and the condition you need reviewed. Sample support can be added after the selection is clear; commercial questions may be discussed in the same engineering conversation.
- 1Selected part numbers
- 2Engineering review
- 3Sample request
- 4Commercial discussion
For a replacement review
- Original part and datasheet
Include the document revision
- Operating conditions
Temperature, isolation voltage and PoE current basis
- Package constraints
Pin count, pitch and spacing between pin rows
- Project stage and annual volume
To help prioritize samples and evaluation
- Target review date
When you need candidates and a comparison of differences
Engineering review identifies candidate parts and explains the differences.
For samples and a quotation
- Candidate part numbers
From the selector or engineering review
- Quantity and project stage
Prototyping / pilot build / production
- Required delivery date
Specify sample and production timing separately
- Required documentation
Compliance documents, material declarations or third-party reports
Samples are free of charge. Sample quantity and lead time depend on the part number and project stage. Sales will respond on business days.
