74437324047 Würth Elektronik Inductor (Other) In Stock
Würth Elektronik 74437324047 is a 4.7 µH powdered iron core power inductor in a 1816 case size with 0.105 Ω DC resistance, designed for general-purpose power conversion and filtering applications in compact SMT power supply circuits.
- Manufacturer
- Würth Elektronik
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- 74437324047 Datasheet PDF
- Category
- Inductor
- Price
- From $1.5150(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4.7 µH inductance with only 0.105 Ω DCR maximizes efficiency in switch-mode power supply output filter stages
- Powdered iron core construction provides stable inductance under DC bias and reduces core losses at switching frequencies up to several MHz
- Compact 1816 SMT case size suits space-constrained DC-DC converter designs with automated pick-and-place assembly
Applications
The 74437324047 is used as an output filter inductor in DC-DC buck and boost converters, power management modules, and automotive ancillary circuits requiring stable 4.7 µH inductance with low DC resistance. Its powdered iron core is also suitable for EMI suppression choke applications in motor drives and switching regulators where core saturation current and thermal performance are critical design constraints.
Specifications
| YTEOL | 15 |
| Case/Size Code | 1816 |
| Construction | Rectangular |
| Core Material | POWDERED IRON |
| DC Resistance | 0.105Ω |
| Inductance-Nom (L) | 4.7 µH |
| Inductor Application | POWER INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| JESD-609 Code | e2 |
| Number of Functions | 1 |
| Package Height | 1.8mm |
| Package Length | 4.45mm |
| Package Style | SMT |
| Package Width | 4.06mm |
| Packing Method | TR, Embossed Plastic, 13 Inch |
| Rated Current-Max | 2.2A |
| Self Resonance Frequency | 31MHz |
| Shape/Size Description | RECTANGULAR PACKAGE |
| Shielded | YES |
| Special Feature | INDUCTANCE IS MEASURED AT 10 MILLI AMPERE |
| Surface Mount | YES |
| Terminal Finish | Tin/Copper (Sn/Cu) |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | WRAPAROUND |
| Test Frequency | 0.1MHz |
| Tolerance | 20% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8504.50.80.00 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What DCR does the 74437324047 have, and how does this impact power supply efficiency?
The 74437324047 has a DC resistance of 0.105 Ω, which is low enough to limit conduction losses at output currents up to 2 A in typical buck converter designs. For a 1 A output current, the resistive loss in the inductor is approximately 105 mW, a level acceptable in most 5 V to 12 V DC-DC converter applications with moderate efficiency targets above 85%.
How does the powdered iron core of the 74437324047 behave under high DC bias compared to ferrite core inductors?
Powdered iron cores exhibit a soft saturation characteristic, meaning inductance decreases gradually as DC bias current rises rather than dropping sharply as ferrite cores do at saturation. For the 74437324047 rated at 4.7 µH, this results in more predictable inductor behavior in buck converter designs where peak switch current exceeds the rated value, reducing the risk of sudden regulation loss under transient overload conditions.
Is the 1816 case size of the 74437324047 compatible with standard pick-and-place assembly in high-volume SMT production?
Yes. The 1816 package (4.57 mm × 4.06 mm footprint) is a standard EIA SMT case size fully supported by automated pick-and-place equipment and reflow soldering at up to 260°C lead-free temperatures. Würth Elektronik provides standardized land pattern data for the 74437324047, simplifying PCB layout and reducing engineering time for production-ready power supply designs.
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About Würth Elektronik
Würth Elektronik is a leading electronic component manufacturer. FindMyChip sources Würth Elektronik ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Würth Elektronik
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.7800 | $2.78 |
| 4+ | $2.0200 | $8.08 |
| 13+ | $1.5150 | $19.70 |
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