Power steps
WH300F-50L, WH300F-12L and WH300F-24L are listed at 30 W, WHTSE030 at 60 W and WHTS20EF1000U at 100 W. Each step is a different EFD20 transformer design with its own windings and drawing, not a higher setting of one part.
Transformer products
EFD20 PoE Power Transformers
The same 12 V output requirement can involve different loads and control conditions. EFD20 includes WH300F-50L, WH300F-12L, WH300F-24L and other candidates for isolated DC/DC power designs in PoE powered devices. Review the available power budget and circuit before comparing windings, temperature rise and layout.
Part number search & selector
Find EFD20 PoE Power Transformers part numbers
Filter EFD20 PoE transformers by package size, power, output voltage and output current.
* Frozen Image and Part Number columns · drag horizontally to review all specifications
| Image | Datasheet | Compare | Downloads |
Package Size
|
Power (W)
|
Output Voltage (V)
|
Output Current (A)
|
Sample |
|---|
| Image | Part number | Datasheet | Compare | Downloads | Package Size | Power (W) | Output Voltage (V) | Output Current (A) | Sample |
|---|---|---|---|---|---|---|---|---|---|
 |
WHTS20EF1000U | SPEC | EFD20 Series | 100W | 12V | 8.35A |
|
||
|
|
WH300F-50L | SPEC | EFD20 Series | 30W | 5V | ≥ 2A |
|
||
|
|
WH300F-24L | SPEC | EFD20 Series | 30W | 24V | 1.08A~1.99A |
|
||
|
|
WH300F-12L | SPEC | EFD20 Series | 30W | 12V | ≥ 2A |
|
||
|
|
WHTSE030 | SPEC | EFD20 Series | 60W | 12V | ≥ 2A |
|
No matching part numbers
Broaden the selected filters or clear the current search.
Product family quick links
Start with Package Size
Counts reflect the current published product data.
Series overview
EFD20 PoE transformer options by power
An EFD20 PoE transformer serves the isolated DC-DC converter of a PoE powered device with a higher power budget. It also goes by EFD20 PoE power transformer or EFD transformer. Parts here are listed from 30 W to 100 W, with 5 V, 12 V or 24 V outputs. For 24 V at 60 W or 90 W, see EFD25 PoE transformers; for 30 W in an EP core, see EP13 PoE transformers.
Output rails
WH300F-50L covers 5 V and WH300F-24L covers 24 V. For 12 V you can choose WH300F-12L, WHTSE030 or WHTS20EF1000U, depending on the load and the power the source can supply.
Output current
WH300F-24L is listed at 1.08–1.99 A, while WH300F-50L, WH300F-12L and WHTSE030 sit in the ≥ 2 A band. WHTS20EF1000U is listed at 8.35 A on 12 V, so plan secondary copper, rectifiers and cooling early.
Windings and controller
Where a datasheet shows an auxiliary winding, it supplies the controller and must match its startup and bias needs. Compare main and auxiliary winding roles and the pin map before moving between EFD20 PoE transformers.
Applications
Applications for EFD20 PoE transformers
EFD20 PoE transformers serve powered devices that need 30 W or more from the converter.
PTZ and outdoor cameras
PTZ cameras and outdoor units with heaters or wipers need more power on a 12 V or 24 V rail. WH300F-12L and WH300F-24L are listed at 30 W for those rails.
5 V USB and compute loads
Multi-port USB chargers and compute boards fed over PoE need 5 V at higher current. WH300F-50L is listed for 5 V at 30 W in the ≥ 2 A band; check secondary copper loss there.
Displays, signage and lighting
Displays and lighting fixtures on a 12 V rail can shortlist WHTSE030 at 60 W. WHTS20EF1000U is listed at 100 W; confirm that the source and cabling can deliver that budget before you design around it.
Downloads & technical resources
EFD20 PoE transformer datasheets and 3D files
Look up a part number for its EFD20 transformer datasheet, 3D model and PCB footprint, and check windings, pin map and outline before layout.
Showing representative available file sets. Search to find a specific SKU.
WHTS20EF1000UEFD20 Series
WH300F-50LEFD20 Series
WH300F-24LEFD20 Series
WH300F-12LEFD20 Series
WHTSE030EFD20 Series
- 5
- PDF datasheets listed
- 5
- 3D file sets listed
- 5
- 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
Buying EFD20 PoE transformers from VOOHU
VOOHU manufactures EFD20 PoE transformers in its own magnetics factory in Mianyang. Datasheets, 3D models and PCB footprints for every part listed here support early thermal and layout review of your design.
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. With the part number, quantity and target build date we can quote; typical lead time is 7–10 days.
Replacement review
When a high-power design needs a second source, send the current transformer’s part number and datasheet. Our FAE team reviews output rail, power, auxiliary winding and footprint, then names EFD20 candidates for you to validate with samples before production.
Quality and compliance
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
EFD20 PoE transformer questions and answers
Answers on buying direct, choosing a power step and design files.
How do the three WH300F output variants differ?
WH300F-50L, WH300F-12L and WH300F-24L are listed for 5 V, 12 V and 24 V reference outputs, respectively. Then check input, load, controller and windings. They are not interchangeable versions of one circuit. Do not interpret “50L” as a 50 V specification.
How should I use the WH300F-24L current range and datasheet?
The range is a filter. The A0 datasheet lists 24 V, 1.25 A and reference conditions of 36–72 V and 250 kHz. Do not treat the filter's upper limit as continuous output capability. Check the controller circuit, temperature rise and available input power.
Does the EFD20 part labeled 100 W mean standard PoE supplies 100 W to a device?
No. The WHTS20EF1000U 100 W page label is not the power available to a device through a standard PoE port. Distinguish PSE output, cable losses, PD input and DC/DC losses. If the target load is 100 W, ask the FAE to review the source and complete power budget first.
Can I replace a 12 V EFD20 part with a higher-power-labeled 12 V part?
Not based on those labels alone. Compare topology, input, frequency, main and auxiliary windings, pinout and PCB dimensions for WH300F-12L, WHTSE030 and WHTS20EF1000U. A higher label does not prove compatibility with the existing circuit. Request FAE difference assessment.
What should I provide for an EFD20 new design or replacement?
For a new design, share input/output, load, control scheme and board limits. For replacement work, add the original part, available datasheet and fixed constraints. You can ask before everything is ready. For a confirmed part, send quantity, destination and requested date for samples or a quote.
Can I buy EFD20 PoE transformers direct from the manufacturer?
Yes. VOOHU manufactures them in its own magnetics factory in Mianyang, China, and you can request EFD20 samples and quotations from this page. Our sales team coordinates any FAE review of your circuit and layout.
How do I choose an EFD20 PoE transformer for a 12 V load?
Take the continuous load and startup peaks at the converter output, then the first step that covers them with margin: WH300F-12L at 30 W, WHTSE030 at 60 W or WHTS20EF1000U at 100 W. Check temperature rise at your maximum ambient.
What design files come with each EFD20 PoE transformer?
Each part listed here has a datasheet, a 3D model and a PCB footprint. Use the datasheet for the winding diagram, test conditions and outline, the 3D model for enclosure clearance, and the footprint as the start of your land pattern.
Engineer support
EFD20 PoE transformer samples and FAE review
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 available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project. Sales will respond on business days.
