Power Inductors – SMD 15uH Unshld 20% 3.1A 46mOhms

DO3316P-153MLD – 15µH Unshielded Drum Core Inductor – Coilcraft

Optimize your power management designs with the Coilcraft DO3316P-153MLD surface-mount inductor, engineered for high-current applications. This compact ferrite-core component delivers reliable performance in space-constrained PCB layouts, featuring low DC resistance and excellent saturation characteristics. PCX ensures genuine Coilcraft products with same-day shipping and dedicated technical support.

Key Features

• Inductance: 15µH ±20% tolerance
• Current Handling: 3.1A rated current / 3A saturation (Isat)
• Ultra-Low DCR: 46mΩ max DC resistance
• Temperature Range: -40°C to +85°C operation
• Compact SMD Footprint: 12.95mm x 9.40mm x 5.21mm
• Self-Resonant Frequency: 27MHz typical

Technical Specifications

• Core Material: Ferrite drum core construction
• Shielding: Unshielded design
• Test Frequency: 100kHz inductance rating
• Mounting: Surface-mount (SMD)
• Package: Nonstandard case
• Status: Active production

Typical Applications

• DC-DC buck/boost converters
• VRM (Voltage Regulator Modules)
• Power supply filtering circuits
• LED drivers and automotive electronics
• Industrial power management systems

About Coilcraft

Coilcraft stands as a global leader in magnetic component innovation, with over 70 years of engineering excellence. Their inductors, transformers, and filters set industry benchmarks for performance consistency and reliability across automotive, industrial, and consumer applications.

All Coilcraft components undergo rigorous testing protocols, including AEC-Q200 qualification for automotive-grade parts. Their vertical manufacturing integration ensures strict quality control from raw materials to finished goods, delivering products trusted by Fortune 500 companies worldwide.

About Power Inductors

Power inductors serve as critical energy storage elements in switching power supplies, smoothing current fluctuations and reducing electromagnetic interference (EMI). Their performance directly impacts system efficiency, thermal management, and voltage stability in high-frequency circuits.

Modern SMD power inductors like the DO3316P series enable miniaturization without sacrificing current handling. Key selection parameters include inductance stability under load, core saturation characteristics, and DC resistance – all optimized in this Coilcraft design for demanding power conversion tasks up to 3.1A.

Packaging Options

Available in industry-standard strip packaging for automated assembly. Contact PCX for reel quantities or custom packaging requirements.

Frequently Asked Questions

Q: What is the temperature derating for this inductor at maximum current?
A: The 3.1A rating applies across the full -40°C to 85°C range without derating.

Q: Is this suitable for automotive ECU designs?
A: Yes, its operating temperature range and robust construction make it ideal for automotive electronics.

Q: How does unshielded construction affect performance?
A: Unshielded inductors offer lower cost and smaller size but may require greater PCB spacing to minimize EMI coupling.

Q: Can I parallel multiple inductors for higher current?
A: While possible, consult the datasheet for thermal considerations. PCX engineers can provide application guidance.

Q: What replacement precautions should I take with drum core inductors?
A: Maintain identical footprint, core material, and saturation characteristics to prevent circuit instability.

Q: Does PCX provide samples before volume orders?
A: Yes – contact our support team for sample requests and design validation assistance.

Datasheet and product images available on PCXCo.com (representative images shown)

Elevate your power design – order genuine Coilcraft DO3316P-153MLD inductors today for same-day shipping and expert technical support!