JHCOILS supplies A11 transmitter coil designs for wireless charging development. Compare the coil and ferrite outline, assembled thickness and lead routing with your transmitter design before selecting a part.
The examples below identify two existing A11 constructions. Request the current drawing and electrical specification for the exact part number; A11 naming alone does not establish interchangeability or finished-charger certification.
A11 Coil Construction and Drawing Review
Use the approved part drawing rather than a generic A11 value. The public 2022 Design 2 document lists 10 turns and 0.08 mm × 105-strand USTC wire. Its electrical table contains an inductance unit conflict, so request a corrected specification before using it for circuit design or acceptance.
Check the coil opening, ferrite outline, total stack height and stripped lead length together. The illustration is a construction reference; the current drawing for your selected part controls dimensions and tolerances.
Provide the ferrite grade, outline, thickness, slots, adhesive and mounting constraints. The rectangular Design 1 ferrite dimensions need drawing confirmation; do not use the old 50 × 5 × 1 mm web entry as an approved size. For Design 2, the public drawing shows a circular 50 mm nominal ferrite outline and 1 mm nominal ferrite thickness. Confirm its revision for a new order.
A11 Design 1: JH-H24-T-A11-1
| Reference | Selection information |
|---|---|
| Part number | JH-H24-T-A11-1 |
| Ferrite geometry | Rectangular outline; dimensions awaiting drawing confirmation |
| Lead length | 8 mm in the historical listing; confirm drawing tolerance |
| Electrical specification | Request the current inductance, Q and resistance limits with test methods |
A11 Design 2: JH-H24-T-A11-2
| Reference | Public drawing information |
|---|---|
| Part number | JH-H24-T-A11-2 |
| Document | Design 2, Rev. 1.0, issued 18 July 2022 |
| Ferrite outline B | 50 ± 1 mm |
| Ferrite thickness D | 1 ± 0.2 mm |
| Assembly height C | 2.6 mm maximum |
| Lead dimension E | 50 ± 2 mm; see drawing for measurement points |
| Electrical values | Request clarification of the inductance units and resistance test method before approval |
These dimensions apply to the linked Design 2 drawing, not every A11 coil. Confirm the current revision before ordering.
Design 2 reference datasheet
The linked 2022 document is a historical drawing reference. Its electrical unit and test-method inconsistencies require a corrected specification for purchasing approval.
Send the transmitter controller reference, intended receiver, coil spacing, enclosure stack and thermal limits. Evaluate samples in that assembly; coil dimensions alone cannot establish charging power, efficiency or alignment tolerance.
Compare MP-A2 coils if your controller uses a different transmitter design. Use the transmitter coil overview to review other coil structures and the receiver coil page for the matching RX side.
Qi certification is assessed for the complete product. See the WPC guidance on components and subsystems.
Tell us which construction you are evaluating, the lead arrangement and the electrical acceptance requirements. Email info@jhcoils.com or use the inquiry form below.
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