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VOOHU WHAL1211A Common Mode Chokes products

Inductor products

WHAL1211A Common Mode Chokes

WHAL1211A sits in the compact end of the power line range, suited to boards where the filter stage cannot take much area. Compare the impedance curve across the band your scan fails, then confirm rated current and DC resistance cover the load.

Part number search & selector

Find WHAL1211A Common Mode Chokes 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

WHAL1211A Common Mode Chokes product selection results
Image Part number Datasheet Compare Downloads Dimensions(L*W*H MAX)Z(Ω) 100MHz/0.1V Min.Z(Ω) 100MHz/0.1V Ref.DC Resistance (mΩ) Max.Rated DC Current (A)Max.Insulation Resistance (MΩ)Min.Rated Voltage (V)Max. Sample
VOOHU WHPL-1211A-231T0 WHAL1211A Common Mode Chokes WHPL-1211A-231T0 SPEC 12118023041010125
VOOHU WHACM12A65R272 WHAL1211A Common Mode Chokes WHACM12A65R272 SPEC 121123002700501.510125
VOOHU WHACM12A65R222 WHAL1211A Common Mode Chokes WHACM12A65R222 SPEC 121122002500351.810125
VOOHU WHACM12A65R102 WHAL1211A Common Mode Chokes WHACM12A65R102 SPEC 1211750100014610125
VOOHU WHACM12A65R801 WHAL1211A Common Mode Chokes WHACM12A65R801 SPEC 12116008008810125
VOOHU WHACM12A65R701 WHAL1211A Common Mode Chokes WHACM12A65R701 SPEC 12115007006810125
VOOHU WHACM12A65R800 WHAL1211A Common Mode Chokes WHACM12A65R800 SPEC 12118023021010125

How to select

Selection guide for Power Line Common Mode Chokes

Selection steps, parameter explanations and the series comparison for Power Line Common Mode Chokes are on one page. Confirm the series there, then use this list for part numbers, files and samples.

Open the Power Line Common Mode Chokes selection guide →

Documents

Common mode choke datasheets and drawings

Datasheets carry the impedance curve, current rating and recommended land pattern.

7
PDF datasheets listed
1
3D file sets listed
0
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.

FAQ

Common mode choke questions engineers ask

Answers cover how the choke works, how to read impedance and where it belongs.

Where does WHAL1211A sit in the range?

It occupies the compact end of the power line family. Smaller cores generally carry less current and place their impedance peak differently from larger parts. Read the impedance at the frequency where your scan fails rather than comparing headline figures across different size bands.

How do I know whether the impedance is enough?

Identify the frequency band where your conducted emission measurement exceeds the limit, then read each candidate's common mode impedance at that frequency. A part with a higher peak elsewhere in the spectrum will not address your specific failure, however impressive the headline number looks.

What limits the current I can put through it?

The rated current is defined under stated temperature-rise conditions. Inside a sealed enclosure with limited airflow the usable figure is lower, so derate for the real ambient. Also check DC resistance, because the voltage drop at full load has to stay within the rail tolerance.

Can I swap WHAL1211A for another series?

Not without comparing the datasheets. Series naming indicates a family, not interchangeability. Compare impedance at your frequency, rated current, DC resistance, withstand voltage and the recommended land pattern, then re-run the emission scan on your own board after any change.

How do I request samples or a quote?

With a complete part number, send the part number, quantity, delivery region and the date you need it. If you are still selecting, send the line current, the frequency band where your scan fails and the board space available, and a sales engineer will confirm candidates first.

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.

  1. 1Selected part numbers
  2. 2Engineering review
  3. 3Sample request
  4. 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.

Your information will be used only to respond to this support request.

Parameter comparison

Compare selected part numbers

Differences are presented for review; confirm final values and file revisions in each part-specific datasheet.