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Product Detailed Parameters
- Description：INDUCT ARRAY 2 COIL 3.3UH SMD
- Series：SRF1280
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Coils：2
- Inductance - Connected In Parallel：3.3 µH
- Inductance - Connected In Series：13.2 µH
- Tolerance：±30%
- Current Rating - Parallel：10.4 A
- Current Rating - Series：5.23 A
- DC Resistance (DCR) - Parallel：11mOhm Max
- DC Resistance (DCR) - Series：40mOhm Max
- Shielding：Shielded
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：Nonstandard
- Size / Dimension：0.492" L x 0.492" W (12.50mm x 12.50mm)
- Height：0.315" (8.00mm)
- Current Saturation - Parallel：21.5 A
- Current Saturation - Series：10.8 A
- Ratings：-
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Overview
The Bourns SRF1280-3R3Y is a shielded dual-coil surface-mount inductor array. It features two coils with a parallel inductance of 3.3 µH and a series inductance of 13.2 µH, both with ±30% tolerance. The component has a maximum DC resistance of 153 mΩ in parallel and 578 mΩ in series. Rated currents are 2.09 A (parallel) and 1.04 A (series), with saturation currents of 4.06 A (parallel) and 2.03 A (series). Dimensions are 12.50mm x 12.50mm x 8.00mm.
Feature Summary
- Dual-coil configuration allowing flexible series or parallel circuit integration
- Fully shielded magnetic structure to minimize electromagnetic interference
- Automotive-grade reliability certified to AEC-Q200 standards
Applications
- DC-DC converter input/output filtering
- Power supply output stages
- Automotive electronics power management
Procurement Notes
Verify the specific suffix 'Y' against the manufacturer datasheet to confirm tolerance and packaging specifications. Ensure the ordering quantity matches the standard tape and reel count of 400 units per reel. Confirm RoHS compliance status for your region before finalizing procurement orders.
Selection Notes
Select this component when high current handling is required in a compact footprint. The dual-coil design supports interleaved winding techniques for improved thermal performance. Verify that the 12.50mm square package fits within the available PCB area and that the 8.00mm height complies with assembly clearance constraints.
Part Context
This part belongs to the SRF1280 series of shielded power inductors manufactured by Bourns Inc. The series is designed for high-current applications requiring robust magnetic shielding. It utilizes a wire-wound construction with ferrite core materials to ensure stable inductance under load conditions.
Replacement Considerations
Cross-reference with other SRF1280 series variants such as SRF1280-330M or SRF1280-820M if different inductance values are acceptable. Ensure any substitute maintains the same 12.50mm x 12.50mm footprint and 8.00mm height dimensions.
