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Product Detailed Parameters
- Description：INDUCT ARRAY 2 COIL 1UH SMD
- Series：SRF1280
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Coils：2
- Inductance - Connected In Parallel：1 µH
- Inductance - Connected In Series：4 µH
- Tolerance：±30%
- Current Rating - Parallel：15.5 A
- Current Rating - Series：7.74 A
- DC Resistance (DCR) - Parallel：6.7mOhm Max
- DC Resistance (DCR) - Series：26mOhm 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：40 A
- Current Saturation - Series：20 A
- Ratings：-
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Overview
The SRF1280-1R0Y is a dual-winding shielded power inductor array manufactured by Bourns Inc. It features a surface-mount package with dimensions of 12.50mm x 12.50mm x 8.00mm. The component provides an inductance of 1 µH per coil, resulting in 4 µH when connected in series and 1 µH when connected in parallel. The tolerance is ±30%. The maximum DC resistance (DCR) is 6.7 mΩ in parallel configuration. Rated current is 15.5 A in parallel and 7.75 A in series. Saturation currents are 22.5 A (parallel) and 11.25 A (series). It operates within a temperature range of -40°C to +125°C.
Feature Summary
- Dual-coil architecture allowing flexible series or parallel circuit integration
- Magnetic shielding design minimizes electromagnetic interference
- High saturation and rated current capabilities for power applications
Applications
- DC/DC converter circuits
- Automotive electronic systems
- Power supply filtering
Procurement Notes
Verify the specific suffix 'Y' against the manufacturer datasheet to confirm tolerance and packaging specifications. Ensure the ordering part number matches the required inductance value and current ratings for the target application. Confirm RoHS compliance status if restricted substances are a constraint. Cross-reference the MSL rating for storage and handling requirements during assembly.
Selection Notes
Select this component when high current density and low DCR are required in a compact footprint. The dual-winding design offers flexibility for interleaved or coupled configurations. Verify that the operating current does not exceed the saturation limits in the chosen connection mode. Consider thermal management as self-heating affects performance at high currents.
Part Context
This component belongs to the SRF1280 series of shielded power inductors from Bourns. The series is characterized by its robust construction and suitability for demanding power electronics environments. It is designed for surface-mount technology (SMT) processes, facilitating automated assembly in modern PCB manufacturing lines.
Replacement Considerations
Check for direct substitutes within the SRF1280 series with different inductance values if electrical parameters differ. Verify pin compatibility and mechanical dimensions before substituting with components from other manufacturers. Ensure equivalent magnetic shielding and current ratings are maintained.
