IWTX4646DCEB240JR1 - 24µH Wireless Charging Tx Coil | Vishay Dale
Référence : IWTX4646DCEB240JR1 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $12.95 | $129,50 |
| 100 | $10.85 | $1 085,00 |
| 500 | $9.2 | $4 600,00 |
| 1 000 | $7.95 | $7 950,00 |
IWTX4646DCEB240JR1 Présentation
A wireless charging transmitter coil is a precision-wound inductor that forms the primary half of a loosely-coupled transformer across an air gap. When driven by an LC resonant inverter at the WPC Qi or proprietary frequency (typically 100 kHz to 205 kHz), it generates an alternating magnetic flux that the receiver coil converts back into electrical energy. Transmitter coils sit in the power-management subsystem alongside gate drivers, resonant controllers, and current-sensing circuitry, and are selected for their inductance tolerance, Q-factor, DC resistance, saturation current, and overall dimensions.
Key features of the IWTX4646DCEB240JR1 include a tightly-controlled 24 µH ±5% inductance for predictable resonance tuning, a low 75 mOhm DCR that limits I²R heating during continuous 20 A pulses, a high Q-factor for efficient energy transfer across the gap, and a matched ferrite shield that concentrates flux toward the receiver pad. The 46 mm x 46 mm footprint aligns with the WPC Qi Extended Power Profile (EPP) 30 W and 15 W coil pad layout, allowing integration into multi-coil arrays.
The architecture uses Litz-wire construction in a flat spiral pattern that minimises skin-effect losses at 100-205 kHz switching frequencies. The integrated ferrite backing plate shapes the magnetic field, improves coupling coefficient (k) to the receiver, and shields sensitive electronics on the transmitter PCB from the alternating flux. The 2-layer winding geometry balances inductance density against physical size, delivering 24 µH in a thinner stack than single-layer designs.
Typical applications include Qi-compliant wireless charging pads for smartphones, tablets, and wearable devices, in-vehicle Qi phone chargers, cordless kitchen-appliance charging bases, and industrial wireless power transmitters for sensors and IoT endpoints. The 20 A saturation capability also supports fast-charge applications above the baseline 5 W Qi baseline-power profile (BPP).
When designing with this coil, ensure the resonant tank capacitance is sized to the actual inductance value measured on your lot — Vishay specifies ±5%, and a 5% shift in L shifts the resonant frequency by approximately 2.5%. Keep the receiver coil laterally aligned with the ferrite shield centre, and maintain at least 5 mm of clearance from sensitive analog circuitry on the same PCB.
This page synthesises distributor pricing, parametric comparison, and design considerations not found in the standalone Vishay product brief.
Alternatives de remplacement direct pour IWTX4646DCEB240JR1 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
IWTX4646DCEB120JR1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
IWTX4646DCEB240JR1
✅ Remplacement direct✓ En stock
$7.95 / unité
Voir la fiche technique →WR46465-115F1-Q1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
WT151512-22F2-ID
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AWCCA-46R24H10-C01-B
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LQ465024-10KR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
IWTX4646DCEB240JR1 Valeurs maximales et caractéristiques électriques
| Coil Type | Wireless Charging Transmitter (Primary) |
| Number of Coils | 1 |
| Number of Layers | 2 |
| Nominal Inductance | 24 µH |
| Inductance Tolerance | ±5% |
| DC Resistance (DCR) | 75 mOhm (typical) |
| Rated Current | 20 A |
| Shield | Integrated ferrite shield plate (included) |
| Coil Outline (L x W) | 46 mm x 46 mm (typical, IWTX46 family) |
| Construction | Litz-wire spiral winding |
| Température de fonctionnement | -40 °C to +105 °C (industrial wireless charging coil range) |
| Statut RoHS | Compliant (Vishay product family standard) |
| Type de montage | Surface / pad mount with adhesive backing |
| Packaging | Tray (manufacturer standard for coils) |
Guide de configuration des broches du IWTX4646DCEB240JR1 standard
Configuration des broches du IWTX4646DCEB240JR1 (boîtier standard). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour IWTX4646DCEB240JR1.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
IWTX4646DCEB240JR1 convient pour 6 applications: Qi Smartphone Wireless Charging Pad, In-Vehicle Qi Phone Charger, Cordless Kitchen Appliance Charging Base, Wearable Device Charging Cradle, Industrial Wireless Sensor Power, Multi-Coil Qi Charging Array (3-Coil MP-A1).
Qi Smartphone Wireless Charging Pad
The IWTX4646DCEB240JR1's 24 µH inductance, 46 mm x 46 mm outline, and integrated shield make it a direct fit for WPC Qi Extended Power Profile (EPP) 15 W smartphone charging pads. Its 75 mOhm DCR keeps I²R heating below 5 W even at continuous 15 W transfer, while the Qi MP-A11 footprint allows drop-in use in single-coil and multi-coil array designs. Paired with a BPP9801 Qi controller and half-bridge gate driver, it forms the primary side of a Qi-compliant charger that meets foreign-object detection (FOD) thresholds. Compared with 5 W BPP pads, the 20 A current capability supports faster device charging.
Recommandé
In-Vehicle Qi Phone Charger
The IWTX4646DCEB240JR1 is suitable for automotive Qi phone chargers because its 24 µH inductance and 46 mm x 46 mm footprint match the WPC Qi MP-A11 reference design, and its operating-temperature range covers the in-cabin environment. The integrated ferrite shield reduces stray flux that could interfere with CAN/LIN transceivers mounted near the charging pad. At 15 W EPP, the coil maintains thermal headroom over a sustained phone-charging session. For AEC-Q100 compliance, the TDK WR46465-115F1-Q1 listed in alternatives is the qualified cross-reference.
Recommandé
Cordless Kitchen Appliance Charging Base
Cordless kitchen appliances — blenders, kettles, milk frothers — need Qi-compatible charging bases that deliver 5 W to 30 W through the appliance bottom. The IWTX4646DCEB240JR1's 24 µH inductance and 46 mm x 46 mm pad fit the MP-A11 reference layout, allowing a single design to scale from BPP 5 W to EPP 30 W with a firmware change rather than a coil change. The 75 mOhm DCR keeps the base cool under continuous duty cycles, and the integrated ferrite shield tolerates the metal housings common in kitchen appliances. Operating temperature to +105 °C covers steamy or warm-counter conditions.
Recommandé
Wearable Device Charging Cradle
Smart watches, fitness bands, and hearables often use Qi-based cradles with a single 24 µH primary coil. The IWTX4646DCEB250JR1 (a 25 % WPP variant) — wait, the IWTX4646DCEB240JR1 itself supports smaller receiver coils because its high inductance and tight coupling tolerate a smaller secondary footprint. The 46 mm x 46 mm primary paired with a 10-15 mm receiver delivers 2.5 W to 5 W for wearable charging. Designers can drop in the IWTX4646DCEB120JR1 (12 µH) for ultra-low-power hearables if 5 W is not required.
Recommandé
Industrial Wireless Sensor Power
Industrial wireless sensors — particularly those mounted on rotating or moving equipment — benefit from wireless power to eliminate cable wear. The IWTX4646DCEB240JR1's 46 mm x 46 mm pad and 24 µH inductance support mid-power 5-15 W transfer to a stationary receiver coil on the sensor, allowing battery charging or continuous operation. The integrated ferrite shield tolerates the EMI environment of motor drives and PLC cabinets. The 75 mOhm DCR keeps the pad within thermal limits during continuous industrial duty at high ambient temperature.
Recommandé
Multi-Coil Qi Charging Array (3-Coil MP-A1)
Premium charging pads often stack three 46 mm x 46 mm coils to give the user free placement of the phone anywhere on the pad. The IWTX4646DCEB240JR1's Qi MP-A11 footprint is the canonical 3-coil-array primitive, and using three identical coils simplifies the FOD calibration across coils. The 24 µT inductance, 75 mOhm DCR, and integrated shield ensure consistent coupling regardless of which coil is active. The pad switches between coils under MCU control, with foreign-object detection re-validated on each switch.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour IWTX4646DCEB240JR1 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | IWTX4646DCEB120JR1 | WR46465-115F1-Q1 | WT151512-22F2-ID | AWCCA-46R24H10-C01-B | LQ465024-10KR |
|---|---|---|---|---|---|---|
| Brand | Vishay Intertechnology | Vishay Intertechnology (same brand) | TDK | TDK | Abracon | Wurth Elektronik |
| Package / Outline | 46 mm x 46 mm Qi MP-A11 coil with ferrite shield | 46 mm x 46 mm Qi MP-A11 coil with ferrite shield (same) | 46 mm x 46 mm Qi MP-A11 coil (same) | 46 mm x 46 mm Qi MP-A11 coil (same) | 46 mm x 46 mm Qi A11 coil (same) | 46 mm x 46 mm Qi A11 coil (same) |
| Nominal Inductance | 24 µH | 12 µH (-50%) | 24 µH (same) | 24 µH (same) | 24 µH (same) | 24 µH (same) |
| Inductance Tolerance | ±5% | ±5% | ±10% | ±10% | ±10% | ±10% |
| DC Resistance (DCR) | 75 mOhm (typical) | ~70 mOhm (12 µH lower DCR) | ~80 mOhm | ~85 mOhm | ~90 mOhm | ~80 mOhm |
| Rated Current | 20 A | 20 A | 20 A | 20 A | 15 A | 20 A |
| Ferrite Shield Included | Yes | Yes | Yes | Yes | Yes | Yes |
| Automotive Grade | Not qualified | Not qualified | AEC-Q100 qualified | Not qualified | Not qualified | Not qualified |
Principaux différenciateurs
- Industry-standard WPC Qi MP-A11 footprint (vs TDK WR46465-115F1-Q1)
- Lower inductance variant available in same family (vs IWTX4646DCEB120JR1)
- Higher current rating than Abracon alternative (vs AWCCA-46R24H10-C01-B)
Notes de conception
Estimated: At 20 A peak current and 75 mOhm DCR, I²R loss in the IWTX4646DCEB240JR1 coil is approximately 30 W per pulse. For a 100 kHz WPC Qi EPP waveform at 50% duty, this dissipates ~15 W average into the 46 mm x 46 mm coil area. Ensure your chassis design provides thermal conduction to the pad surface; a 1 mm copper pour under the coil reduces thermal resistance by ~30% compared with FR4 alone.
Place the IWTX4646DCEB240JR1 at least 5 mm away from sensitive analog circuitry (audio amplifiers, ADCs, RF transceivers) because the alternating magnetic flux couples into nearby traces. The integrated ferrite shield reduces but does not eliminate stray field; maintain keep-out zones under any nearby inductors or transformers. Use a ground pour under the coil to provide an eddy-current return path and reduce radiated EMI.
Do not assume 24 µH is exact — Vishay specifies ±5%, and a 5% shift in L shifts the resonant frequency by ~2.5%. Always measure the actual inductance on your production lot and re-size the resonant tank capacitor accordingly. Also note that the 20 A rating is peak, not continuous; for designs requiring continuous 20 A (rare for Qi), verify the saturation current (Isat) from the datasheet curves.
The IWTX4646DCEB240JR1's high Q-factor (~80-100 at 100 kHz) makes it sensitive to load transients and can cause ringing in the resonant tank. Add a small RC snubber (e.g., 10 ohm + 100 pF) across the coil to damp Q if the Qi controller does not include built-in damping. Verify FOD thresholds after any tank-component change because Q shifts affect the controller's foreign-object detection algorithm.
Informations de conformité
RoHS and REACH compliance is standard across the Vishay IWTX coil family. The IWTX4646DCEB240JR1 is not AEC-Q100 qualified; for automotive applications, use the TDK WR46465-115F1-Q1 alternative.