Manufacturer: Bourns
Key Specifications
- Package: 1210 (SRR1210)
- Inductance: 22 µH
- Tolerance: ±20%
- Rated Current: 3.6 A
- DC Resistance (DCR): 0.052 Ω (typ)
- Shielding: Shielded
- Operating Temperature: -40°C to +125°C
- Core Material: Ferrite (to be verified)
The Bourns SRR1210-220M is a shielded surface-mount power inductor designed for space-constrained power management applications. With an inductance of 22 µH and a rated current of 3.6 A, this component provides reliable energy storage and filtering in DC-DC converters, voltage regulator modules, and other power supply circuits.
Key Features
- Shielded construction minimizes electromagnetic interference (EMI) and reduces cross-talk in dense PCB layouts.
- Inductance value: 22 µH with ±20% tolerance, suitable for moderate-power switching regulators.
- Rated current of 3.6 A ensures stable operation under typical load conditions.
- Low DC resistance (DCR) of 0.052 Ω (typical) helps improve efficiency by reducing copper losses.
- Operating temperature range from -40°C to +125°C supports industrial and automotive environments (temperature derating may apply).
- Compact 1210 (SRR1210) package footprint enables high-density board design.
Applications
- DC-DC converters (buck, boost, and buck-boost topologies)
- Power supply modules for networking, telecommunications, and computing equipment
- LED drivers and lighting power supplies
- Battery-powered devices and portable electronics
- Industrial control systems and automation equipment
Selection Guidance
When selecting the SRR1210-220M, verify that the operating current does not exceed the rated current, and consider the inductance drop due to DC bias. For high-temperature environments, derating of current may be necessary. The component is supplied in tape-and-reel packaging for automated assembly. For detailed specifications, including saturation current and frequency characteristics, refer to the official Bourns datasheet.
