74437324068 Würth Elektronik Inductor (Inductors Precision Moulded) In Stock
Würth Elektronik 74437324068 is a 6.8 µH powdered iron core SMD power inductor in the 1816 case size with 0.172 Ω DC resistance for DC-DC converter applications. Its precision-moulded construction ensures consistent inductance across temperature, supporting high-efficiency power conversion. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Würth Elektronik
- Package
- Inductors Precision Moulded
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- 74437324068 Datasheet PDF
- Category
- Inductor
- Price
- From $1.8150(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
- 6.8 µH nominal inductance with 0.172 Ω DCR in a compact 1816 (4.5 mm × 4.1 mm) SMD package for efficient DC-DC converter designs
- Powdered iron core construction provides low core losses and stable inductance across varying load currents in switching power supply applications
- Precision moulded package with rectangular form factor enabling consistent automated PCB placement and reliable performance in industrial power designs
Applications
The 74437324068 is used as an output filter inductor in step-down (buck) DC-DC converters for embedded systems, IoT devices, and industrial power supplies where a compact 6.8 µH inductor with low 0.172 Ω DCR is required to minimize conduction losses. Its powdered iron core and 1816 case size suit point-of-load regulators powering microcontrollers, FPGAs, and DSPs from 5 V or 12 V input rails. It is also deployed in EMI filtering stages and power factor correction circuits where stable inductance under load current is critical.
Specifications
| YTEOL | 15 |
| Case/Size Code | 1816 |
| Construction | Rectangular |
| Core Material | POWDERED IRON |
| DC Resistance | 0.172Ω |
| Inductance-Nom (L) | 6.8 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 | 1.75A |
| Self Resonance Frequency | 29MHz |
| 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 | Inductors Precision Moulded |
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
Compatible alternatives and drop-in replacements for 74437324068:
suggested
suggested
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Frequently Asked Questions
What inductance and DC resistance does the 74437324068 offer and how do these specifications affect buck converter efficiency?
The 74437324068 provides a nominal inductance of 6.8 µH with a DC resistance (DCR) of 0.172 Ω. In a buck converter switching at 500 kHz with 2 A output current, the 0.172 Ω DCR results in approximately 0.69 W of conduction loss (I²×R), making it a low-loss choice for point-of-load regulators powering microcontrollers and FPGAs from 5 V rails.
What case size does the 74437324068 use and how does it fit a compact switching power supply layout?
The 74437324068 uses the 1816 case size, which corresponds to approximately 4.5 mm × 4.1 mm footprint. This compact SMD outline fits alongside standard SOIC-8 or DFN power controller ICs on a typical point-of-load converter PCB, minimizing the area required for the inductor in a 6.8 µH output filter stage with 2 A saturation current capability.
Why is a powdered iron core chosen for the 74437324068 over ferrite in switching power supply designs?
Powdered iron cores exhibit a soft saturation characteristic, meaning inductance decreases gradually rather than abruptly as current increases beyond the rated level. For the 74437324068 used in a 6.8 µH DC-DC converter output stage, this soft saturation prevents sudden loss of filtering effectiveness under transient load steps, improving converter stability compared to an abrupt-saturation ferrite core inductor of equivalent inductance.
In which switching frequency range is the 74437324068 most effective as a power inductor?
The 74437324068 with its 6.8 µH inductance and powdered iron core is optimally matched to switching frequencies between 200 kHz and 1 MHz, covering the most common range used by synchronous buck controllers such as those operating at 300 kHz to 600 kHz with 1 A to 3 A output current. Below 200 kHz, a larger inductance may be needed to limit ripple current; above 1 MHz, core losses in the powdered iron material begin to increase noticeably.
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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 |
| 5+ | $2.6400 | $13.20 |
| 10+ | $2.5000 | $25.00 |
| 100+ | $2.0060 | $200.60 |
| 500+ | $1.9110 | $955.50 |
| 1000+ | $1.8150 | $1815.01 |
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