Overview
The SRF3216-601Y is a surface-mount inductor designed for high-frequency applications in modern electronics. It belongs to the family of power inductors, which are critical components in voltage regulation and signal conditioning circuits. With its compact size (3.2mm x 1.6mm footprint), this inductor is particularly suited for space-constrained designs such as mobile devices and IoT modules. The component's construction combines a ferrite core with precision-wound copper wire, ensuring low electromagnetic interference (EMI) and high efficiency. Its standardized dimensions make it compatible with automated assembly processes, reducing manufacturing costs for high-volume production.
Structure and Working Principle
The SRF3216-601Y features a multilayer ferrite core that provides a closed magnetic path, minimizing flux leakage and improving inductance stability. The copper winding is carefully designed to balance resistance and current capacity, achieving optimal Q-factor for its size class. When current flows through the inductor, energy is stored in its magnetic field. This property allows it to smooth out current fluctuations in DC-DC converters and filter high-frequency noise in signal lines. The component's self-resonant frequency is carefully engineered to be well above typical operating ranges, preventing performance degradation in practical applications.
Key Features
This inductor offers several performance advantages including a typical inductance of 6.0µH (±20%) and a DC resistance as low as 0.15Ω. Its saturation current rating reaches up to 1.2A, making it suitable for power-hungry applications while maintaining compact dimensions. The component operates reliably across a wide temperature range (-40°C to +125°C) and demonstrates excellent thermal stability. Its lead-free construction complies with RoHS directives, and the nickel barrier plating prevents oxidation, ensuring long-term reliability in various environmental conditions.
Application Areas
Primary applications include power supply circuits in smartphones, tablets, and wearable devices where space efficiency is crucial. The inductor is also widely used in voltage regulator modules (VRMs) for computers and server equipment. In automotive electronics, the SRF3216-601Y finds use in infotainment systems, ADAS components, and engine control units where vibration resistance is essential. Industrial applications include power conditioning in PLCs, motor drives, and renewable energy systems where stable performance under varying loads is required.
Maintenance and Precautions
While inductors are generally maintenance-free components, proper handling during assembly is crucial. Avoid applying excessive force during placement to prevent cracking of the ferrite core. The component should be stored in dry conditions to prevent moisture absorption that could affect performance. When designing circuits, ensure adequate clearance from heat-generating components and follow recommended soldering profiles (typically 260°C peak temperature for no more than 10 seconds). Derating guidelines should be followed for continuous operation near maximum current ratings to ensure long-term reliability.
B2B Procurement Guide
When sourcing SRF3216-601Y inductors, verify supplier certifications (ISO 9001, IATF 16949 for automotive grade) and request detailed specifications including DCR measurements at various temperatures. Minimum order quantities typically range from 1,000 to 10,000 pieces for standard pricing. Lead times vary from 4-8 weeks for standard products to 12+ weeks for custom variants. Consider secondary sources or equivalent parts (with proper engineering validation) to mitigate supply chain risks. Quality assurance should include batch testing for inductance tolerance, current handling, and mechanical integrity.
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