Inductor products
WHLC2012A is another option in the 2012 size band, for differential interfaces where board area is the binding constraint. Compare the impedance curve against your failing band, then confirm the link still meets its eye and return loss targets.
Part number search & selector
Filter WHLC2012A chokes by size, common mode impedance, inductance, DC resistance, leakage inductance, isolation resistance, rated current and rated voltage.
* Frozen Image and Part Number columns · drag horizontally to review all specifications
| Image | Datasheet | Compare | Downloads |
Size
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Common Mode Impedance (10MHZ) ΩMin
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Common Mode Impedance (Ωtyp)
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Inductance (uH) +50/–30%
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RDC (Ω)Max
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Leakage Inductance (nH) typ
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Isolation Resistance (MΩ) Min
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Rated Current Max
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Rated Voltage (V) Max
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Sample |
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| Image | Part number | Datasheet | Compare | Downloads | Size | Common Mode Impedance (10MHZ) ΩMin | Common Mode Impedance (Ωtyp) | Inductance (uH) +50/–30% | RDC (Ω)Max | Leakage Inductance (nH) typ | Isolation Resistance (MΩ) Min | Rated Current Max | Rated Voltage (V) Max | Sample |
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WHLC-2012A-121T1 | SPEC | 2012 | - | 120 | - | 0.3 | - | 10 | 400mA | 125 |
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WHLC-2012A-381T0 | SPEC | 2012 | - | 380 | - | 0.45 | - | 10 | 300mA | 50 |
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WHLC-2012A-900T0 | SPEC | 2012 | - | 90 | - | 0.35 | - | 10 | 300mA | 50 |
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WHLC-2012A-181T0 | SPEC | 2012 | - | 180 | - | 0.35 | - | 10 | 300mA | 50 |
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WHLC-2012A-261T0 | SPEC | 2012 | - | 260 | - | 0.4 | - | 10 | 300mA | 50 |
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WHLC-2012A-361T1 | SPEC | 2012 | - | 360 | - | 0.45 | - | 10 | 300mA | 50 |
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WHLC-2012A-801T0 | SPEC | 2012 | - | 800 | - | 0.88 | - | 10 | 300mA | 50 |
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WHLC-2012A-102T0 | SPEC | 2012 | - | 1000 | - | 1.3 | - | 10 | 300mA | 50 |
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WHLC-2012A-122T0 | SPEC | 2012 | - | 1200 | - | 1.5 | - | 10 | 300mA | 50 |
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WHLC-2012A-750C | SPEC | 2012 | - | 75 | - | 0.55 | - | 10 | 280mA | 50 |
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WHAC-2012A-801T0 | SPEC | 2012 | - | 800 | - | 0.88 | - | 10 | 300mA | 50 |
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WHAC-2012A-900T0 | SPEC | 2012 | - | 90 | - | 0.35 | - | 10 | 300mA | 50 |
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WHLC-2012A-121T0 | SPEC | 2012 | - | 120 | - | 0.3 | - | 10 | 400mA | 50 |
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Broaden the selected filters or clear the current search.
By interface
The interface sets the data rate and therefore what the choke is allowed to do to the signal.
Series overview
WHLC2012A signal line common mode chokes are 2012-size chips that suppress common mode noise on a differential pair in very little board area. They also turn up in searches as 0805 common mode chokes, common mode inductors or signal line chokes. The selector is built around WHLC part numbers, from WHLC-2012A-750C to WHLC-2012A-122T0, with the WHAC2012A parts listed alongside. For Ethernet ports, see the 2012 chokes for CHIP LAN designs.
WHLC grades climb from WHLC-2012A-750C and WHLC-2012A-900T0 through WHLC-2012A-181T0, WHLC-2012A-261T0 and WHLC-2012A-381T0 to WHLC-2012A-102T0 and WHLC-2012A-122T0. Fit a grade just high enough to clear your emission scan, so the signal keeps its margin.
Endings matter: WHLC-2012A-121T1 is listed with a different rating from WHLC-2012A-121T0 despite the shared grade code. Quote the ending on every drawing and order, and design from the datasheet with the same ending.
WHLC-2012A-900T0, WHLC-2012A-801T0 and other WHLC grades also appear on the CHIP LAN 2012 page for Ethernet ports. Use that page for LAN designs and this one for USB 2.0, LVDS and other differential pair links.
The WHLC prefix also appears in the 4532 size: WHLC-4532A-142T0 is listed on the WHAC4532A page. A 4532 body adds winding space but spreads the pair, so check trace spacing first.
Applications
With grades from low to high impedance, one size can serve fast and slow pairs.
A controller board may route USB 2.0 next to slower serial links. Using WHLC-2012A-900T0 as the common mode choke for USB and WHLC-2012A-381T0 on the slow pair keeps one package size on the assembly line.
Display, camera and HMI links run fast pairs over flex or cable. An LVDS common mode choke in the 2012 size fits beside the connector; pick the grade from the failing band, then check the eye.
Slow differential lines in meters and instruments often fail lower in the spectrum. High grades such as WHLC-2012A-102T0 and WHLC-2012A-122T0 add more suppression in a 2012 body; check that edges stay within the interface spec.
Documents
Enter the full part number, ending included, to download its datasheet, 3D model and PCB footprint before layout.
Showing representative available file sets. Search to find a specific SKU.
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
VOOHU makes WHLC2012A chokes in its own magnetics factory in Mianyang. Each part number has a datasheet, 3D model and PCB footprint, so you can try several grades in layout before ordering samples.
Discuss a new design
Contact FAE for a replacement assessment.
Already have a part number? Request samples or a quote.
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. For a quote, give each full part number and the yearly volume; typical lead time is 7–10 days.
Send the part number and datasheet of the 2012 common mode choke on your BOM. Our FAE team compares impedance curve, DC resistance, rated current and footprint, then lists WHLC2012A candidates to validate with samples before production.
VOOHU is ISO 9001 and ISO 14001 certified. Since 2018 VOOHU has supplied more than 1,500 customers, including 150+ listed companies. Its Mianyang factory makes the 2012, 3225 and 4532 signal line chokes as well as LAN transformers.
FAQ
Supply, the first grade to fit and footprint reuse across grades.
Read each part's common mode impedance at the frequency your scan fails, compare maximum DC resistance, then check the recommended land pattern and the symmetry of the differential routing through the part. Finally verify on the target board, because layout changes the measured outcome.
Compact parts suit differential interfaces where trace spacing is constrained. Whether a given part fits a specific interface depends on its impedance curve and insertion loss, so send the interface and data rate and our engineers will confirm which candidates are appropriate.
No. Prefixes identify naming families, not performance tiers. Reading a ranking into the letters is a common mistake. Compare the actual impedance at the frequency you care about, along with DC resistance and the datasheet's stated test conditions.
Re-run the emission scan to confirm the failing band is now within limit, and measure the eye diagram and return loss to confirm the signal has not degraded. Both checks matter, because a choke that fixes emissions while breaking the link has not solved the problem.
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 interface, the data rate and the frequency band where your scan fails, and a sales engineer will confirm candidates first.
Yes. VOOHU manufactures WHLC2012A signal line common mode chokes in its own magnetics factory in Mianyang, China. Production covers every grade and ending in this selector, from WHLC-2012A-750C to WHLC-2012A-122T0, so one supplier can cover all your 2012 trials.
Fit a low grade first, often WHLC-2012A-900T0 or WHLC-2012A-121T0 on a fast pair, and scan again. Climb only as far as the failing band requires, re-measuring the eye each time, because every step loads the signal more.
Compare the PCB footprint files of each grade you plan to try. Where pad sizes and terminal numbering match, one footprint can take several grades during EMC tuning and save a board spin late in the project.
Engineer 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.
Include the document revision
Temperature, isolation voltage and PoE current basis
Pin count, pitch and spacing between pin rows
To help prioritize samples and evaluation
When you need candidates and a comparison of differences
Engineering review identifies candidate parts and explains the differences.
From the selector or engineering review
Prototyping / pilot build / production
Specify sample and production timing separately
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.
