Bourns Expands Shielded Power Inductor Line for Automotive DC-DC Designs
New AEC-Q200 series pairs metal-alloy cores with shielding to curb EMI while handling saturation currents up to 9 A.
Bourns has introduced three new shielded power inductor series—the SRP2010PA, SRP2510PA, and SRP2512PA—aimed at automotive DC-DC converter applications that demand high current handling in tight board space. The AEC-Q200-compliant components combine a metal-alloy powder core with shielded construction, an approach intended to limit magnetic field radiation without requiring engineers to sacrifice the low-profile footprints that dense automotive PCBs increasingly require.
Addressing Current, Space, and EMI Simultaneously
Modern automotive electronics routinely ask designers to reconcile three competing constraints: rising current demands, shrinking board real estate, and stricter EMI limits. Unshielded inductors can simplify manufacturing but tend to radiate more magnetic flux, complicating layout near sensitive circuitry. Bourns’ SRP-PA series folds shielding directly into the package, an approach the company says allows higher current handling without a corresponding increase in radiated field strength, useful in the densely packed layouts common to modern DC-DC converters.
Across the three families, saturation currents reach up to 9 A, while inductance values range from 0.1 to 3.3 microhenries, depending on the series and part. Physical sizes range from 2 x 1.6 x 1 mm for the SRP2010PA up to 2.5 x 2 x 1.2 mm for the SRP2512PA, giving designers some flexibility to trade footprint against current and heating performance. All three series carry an operating temperature range of -40 to +145 degrees Celsius, consistent with automotive-grade qualification.
Specifications at a Glance
|
Series |
Size (mm) |
Inductance (µH) |
Isat (A) |
|
SRP2010PA |
2 x 1.6 x 1 |
0.1–2.2 |
2.4–9.0 |
|
SRP2510PA |
2.5 x 2 x 1 |
0.22–3.3 |
2.5–9.0 |
|
SRP2512PA |
2.5 x 2 x 1.2 |
0.22–3.3 |
2.8–9.0 |
The series is also RoHS-compliant and halogen-free, per Bourns’ internal thresholds for bromine and chlorine content, rounding out the environmental compliance profile that automotive suppliers typically require.
All three series are available now, with datasheets and samples accessible directly through Bourns. Given their compact footprint and shielded, high-current design, these inductors look well suited to automotive power rails, DC-DC converters, and other miniaturized electronics where board space and EMI control are both at a premium, an appealing combination for engineers juggling shrinking layouts against growing power demands.
