Turns ratio and center taps
Identify the stated pins and winding sections. An abbreviated ratio is not a regulated output-voltage specification.
Transformer products
Push-Pull Transformers
Find a push-pull transformer for your isolated power design. Compare six series against your input/output requirements, drive conditions and winding arrangement, using part-specific datasheets for selection and sample validation. Already have a part number? Request samples or pricing directly. For a new design, share your requirements. For an existing component, your sales engineer can coordinate an FAE replacement assessment.
Part number search & selector
Find Push-Pull Transformers part numbers
The table uses the current English-site product records, published selection fields and part-specific technical-file links.
* Frozen Image and Part Number columns · drag horizontally to review all specifications
| Image | Datasheet | Compare | Downloads |
Series
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L(μH)
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Turns Ratio
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DCR1(mΩ)
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DCR2(mΩ)
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Isolation(VAC)
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Operating Temperature(℃)
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Sample |
|---|
| Image | Part number | Datasheet | Compare | Downloads | Series | L(μH) | Turns Ratio | DCR1(mΩ) | DCR2(mΩ) | Isolation(VAC) | Operating Temperature(℃) | Sample |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
WHST08802E0 | SPEC | WHST088 | 537 | 1:1:0.45:0.45 | 660 | 330 | 2100 | -40℃ to 125℃ |
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No matching part numbers
Broaden the selected filters or clear the current search.
Product family quick links
Start with Series
Counts reflect the current published product data.
How to select
A practical selection sequence
Narrow the published fields in sequence, compare the remaining candidates and verify the part-specific files before design-in.
- 01
Define the supply requirements
Record input range, output voltage, continuous load, startup needs, available space and thermal constraints.
- 02
Review the driver and windings
Identify the driver IC or circuit, operating frequency and drive arrangement, then check turns ratio, center taps and pins.
- 03
Compare electrical and mechanical requirements
Review isolation test conditions, inductance, DCR, leakage inductance and package. Confirm the required volt-time capability in the applicable document or with engineering.
- 04
Check the files and validate the candidate
Confirm document revisions and arrange sample testing. Request pricing directly for an identified part; have the FAE compare the original and candidate parts for a replacement project.
Key selection parameters
What each filter helps you decide
Inductance
Check measurement frequency, voltage and the stated minimum or tolerance. Similar values can have different test conditions.
DCR and leakage inductance
Compare the specified winding, conditions and maximum or typical value. These figures alone do not establish power, efficiency or temperature rise.
Isolation test conditions
Check AC/DC, test voltage, duration and pins together. A single test-voltage figure does not establish operating voltage or an insulation classification.
Volt-time capability
Review it against the voltage applied to the winding and its duration. Submit your drive conditions for confirmation where the part document does not provide this parameter.
Pins and package
Check polarity dots, center taps, dimensions and land pattern. A matching outline does not establish electrical compatibility.
Product family comparison
Compare the published Series
Use this summary as a routing step, then verify every required value in the exact part-number row and linked technical files.
Return to the selector ↑| Series | Parts | L(μH) | Turns Ratio | DCR1(mΩ) | DCR2(mΩ) | Isolation(VAC) | Operating Temperature(℃) | Action |
|---|---|---|---|---|---|---|---|---|
| WHST06E | 6 | 475 | 1:1.1, 1:1.3, 1:1.5, 1:1.7, 1:2 | 1000 | 1000 | 3000, 3100 | -40℃ to 125℃ | Filter → |
| WHST06D | 7 | 100, 200, 538, 600, 680 | 1:1.07, 1:1:3.4, 1.2:1, 1.75:1, 3:4, 3:8, 4:1 | 237, 250, 280, 350, 400 | 70, 125, 220, 290, 520, 882, 900 | 2500, 3000, 4000 | -40℃ to 125℃ | Filter → |
| WHST06K | 2 | 340 | 1:2, 1:3 | 750 | 1300, 1500 | 4000 | -40℃ to 125℃ | Filter → |
| WHST06Q | 1 | 86 | 1:2.88 | 100 | 500 | 2500 | -40℃ to 125℃ | Filter → |
| WHST060 | 18 | 340, 538, 680 | 1:1, 1:1.7, 1:2, 2:1, 3:4, 3:5, 3:8, 4:3, 8:3, 8:9 | 700, 750, 900, 1300, 1500 | 700, 750, 900, 1000, 1200, 1300, 1500 | 4000 | -40℃ to 125℃ | Filter → |
| WHST088 | 1 | 537 | 1:1:0.45:0.45 | 660 | 330 | 2100 | -40℃ to 125℃ | Filter → |
Technical performance & application fit
Validate the complete design context
Application suitability is part-number specific. Treat the catalog fields as a shortlist, then confirm the design against the linked technical files.
RS485/CAN interface isolated power
- Specify the isolated-side voltage, transceiver and other loads, startup requirements and isolation boundary. This review concerns the power supply, not RS485/CAN data-signal transmission through the transformer.
Industrial control auxiliary power
- Share the control board's input range, output rails and loads, ambient conditions and available space to compare winding and thermal requirements.
Gate-driver power supplies
- Provide the driver part number, required supply rails and load, isolation requirements and drive arrangement for a part-specific FAE assessment.
Downloads & technical resources
Find files by part number
Search a full or partial SKU, then open its datasheet, 3D model or PCB footprint without returning to the product table.
Showing representative available file sets. Search to find a specific SKU.
WHST06K14A0WHST06K
WHST06E14A1WHST06E
WHST06K02A0WHST06K
WHST06D07E0WHST06D
WHST06D08E0WHST06D
WHST06D05E0WHST06D
- 35
- PDF datasheets listed
- 35
- 3D file sets listed
- 25
- 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.
Category overview
Push-pull transformers in isolated DC-DC stages
These parts belong inside an isolated converter, which is what separates them from a complete power module.
Discuss a new design
Contact FAE for a replacement assessment.
Already have a part number? Request samples or a quote.
A component, not a module
A push-pull transformer provides the isolated magnetic coupling in a converter topology. It is not a finished DC-DC module: no switching controller, no rectification, no regulation. You supply those. If you need a drop-in isolated supply, buy a module; if you are designing the converter, this is the part.
Turns ratio sets the output
The ratio between primary and secondary windings, with the input voltage and the topology, determines the output voltage before regulation. Parts with multiple secondaries have a ratio for each. Read each winding's ratio from the datasheet rather than inferring it from the part number, because notation varies between series.
Inductance and frequency work together
Primary inductance, switching frequency and input voltage together determine how far the core is driven each cycle. Running a transformer below its intended frequency pushes the core toward saturation. Confirm the frequency range from the datasheet and verify flux margin at worst case.
FAQ & related guides
Questions before design-in
These answers guide the page workflow. Part-specific engineering limits still come from the linked technical files.
How does a push-pull transformer differ from a complete isolated DC-DC module?
A push-pull transformer is a magnetic component used with a driver, rectification and any required regulation. Start selection with input/output, drive and isolation requirements, not just the target output voltage. If your supply design is defined, share the reference circuit and candidate part number.
How should I read the ratio of a center-tapped push-pull transformer?
CT means center tap. Locate the winding diagram and identify the stated pins, full or half winding sections and polarity dots before checking the actual drive connections. Ratio conventions can vary between documents; an abbreviated selector value does not replace the winding and pin check.
Do the input voltage and turns ratio determine the actual output voltage?
Those two figures alone do not guarantee the output. The driver arrangement, rectification, regulation and load also matter. Share the input range, required output voltage/current and driver IC or circuit so engineering can assess candidates, followed by loaded-output and startup checks in your circuit.
Does a 3000 VAC or 4000 VAC isolation test rating define continuous operating voltage?
No. Read the test voltage with its duration, AC/DC type and tested pins. It is not a continuous working-voltage rating or proof of an insulation certification. Define your working voltage and system insulation requirements separately, then select using part-specific documentation and engineering confirmation.
What should I provide for RS485/CAN, industrial auxiliary or gate-driver power selection?
Start with the application, input range, output voltage and load, then add the driver circuit, isolation requirements and space constraints. For RS485/CAN, identify isolated-side loads; for multiple auxiliary rails, explain their connection requirements; for gate-driver supplies, define the required rails. A shared application name does not establish a common transformer choice.
Can I look up a direct VOOHU replacement for another manufacturer's part?
Replacement matching is currently an engineering-assisted process. Contact your sales engineer with the complete original part number, datasheet revision, actual circuit and fixed mechanical or performance constraints. The FAE will assess candidates. Similar table values do not establish drop-in compatibility; electrical, thermal and layout validation is still required.
How do I request push-pull transformer samples, pricing or production quantities?
For a known part, send its complete number, sample or order quantity, project stage and destination directly to your sales engineer. You do not need to wait for an additional selection process just to request pricing. Price, MOQ, availability and lead time depend on the part and order. In-stock standard samples may ship from Suzhou as early as the same day once order and dispatch conditions are met.
Can I request a custom turns ratio or mechanical design?
Yes. Submit the input/output, driver and isolation requirements, target ratio and size limits for engineering assessment. If tooling is involved, the mechanical design, validation plan and expected quantity also need review. The design, cost, sample schedule and production lead time are confirmed after assessment.
Engineer support
Continue after product selection
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.
Published replacement reviews
Push-Pull Transformer Selection Comparison: VOOHU WHST06Q02E0 vs. Würth Elektronik 750316819
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