74437349015 Würth Elektronik Inductor (Other) In Stock
Würth Elektronik 74437349015 is a 1.5 µH powdered iron core power inductor in a 2926 case size with an ultra-low DCR of 0.009 Ω for high-current DC-DC converter applications. Its rectangular construction and general-purpose design support use across a broad range of switching regulator topologies. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Würth Elektronik
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- 74437349015 Datasheet PDF
- Category
- Inductor
- Price
- From $1.5723(MOQ 10)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1.5 µH nominal inductance with 0.009 Ω ultra-low DC resistance minimizes conduction losses in high-current synchronous buck and boost converter stages
- Powdered iron core material provides excellent saturation current handling and stable inductance over a wide DC bias range for power inductor applications
- 2926 rectangular surface mount case size offers a balance between compact footprint and high current capacity on densely populated power supply PCBs
- General-purpose power inductor rated construction ensures broad compatibility with buck, boost, SEPIC, and filter stage designs in industrial and consumer electronics
Applications
The 74437349015 is designed as the main energy storage inductor in synchronous buck and boost DC-DC converters for industrial power supplies, point-of-load regulators, and embedded computing power rails operating at high switching frequencies. Its 1.5 µH inductance and 0.009 Ω DCR make it suitable for multi-ampere output current applications where low losses and stable inductance under DC bias are critical for converter efficiency. The 2926 surface mount package enables use in automated production of compact power supply modules for telecommunications and server infrastructure equipment.
Specifications
| YTEOL | 15 |
| Case/Size Code | 2926 |
| Construction | Rectangular |
| Core Material | POWDERED IRON |
| DC Resistance | 0.009Ω |
| Inductance-Nom (L) | 1.5 µH |
| Inductor Application | POWER INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| JESD-609 Code | e2 |
| Number of Functions | 1 |
| Package Height | 4.8mm |
| Package Length | 7.3mm |
| Package Style | SMT |
| Package Width | 6.6mm |
| Packing Method | TR, Embossed Plastic, 13 Inch |
| Rated Current-Max | 8A |
| Self Resonance Frequency | 35MHz |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the inductance value and DC resistance of the Würth 74437349015, and how do these affect converter efficiency?
The 74437349015 has a nominal inductance of 1.5 µH and an ultra-low DC resistance of 0.009 Ω. At 5 A output current, the copper loss is only 5² × 0.009 = 0.225 W, keeping conduction losses low in synchronous buck converters and contributing to efficiency above 90% in multi-ampere point-of-load designs.
What core material does the 74437349015 use and why does it benefit high-current switching applications?
The 74437349015 uses a powdered iron core, which maintains inductance more gracefully under high DC bias compared to ferrite cores that can saturate sharply. This soft saturation characteristic preserves energy storage and current ripple control at peak load currents in 3.3 V and 5 V point-of-load regulators without the abrupt efficiency drop seen with saturated ferrite inductors.
What is the case size of the 74437349015 and how does it affect PCB layout in compact power supply designs?
The 74437349015 is packaged in a 2926 case size, measuring approximately 7.4 mm x 6.6 mm footprint. This medium-sized surface mount footprint accommodates high saturation current inductors while remaining smaller than 3838 or larger case sizes, enabling placement in compact power supply modules where board area is limited to under 15 cm².
For which switching regulator topologies is the 74437349015 1.5 µH inductor best suited?
The 74437349015 is well-suited for synchronous buck converters switching at 200 kHz to 1 MHz, where 1.5 µH provides adequate current ripple attenuation at multi-ampere load currents. It also works in boost and SEPIC topologies for input voltage ranges from 2.5 V to 12 V, and as a differential-mode filter inductor in EMI filter stages requiring 1 µH to 2 µH at frequencies above 100 kHz.
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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.
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