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Product Detailed Parameters
- Description：INDUCT ARRAY 2 COIL 47UH SMD
- Series：SRF1280
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Coils：2
- Inductance - Connected In Parallel：47 µH
- Inductance - Connected In Series：188 µH
- Tolerance：±20%
- Current Rating - Parallel：2.95 A
- Current Rating - Series：1.47 A
- DC Resistance (DCR) - Parallel：89.8mOhm Max
- DC Resistance (DCR) - Series：353mOhm 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：5.28 A
- Current Saturation - Series：2.64 A
- Ratings：-
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Overview
The Bourns SRF1280-470M is a shielded two-coil surface mount inductor array from the SRF1280 series. It features a 47 µH inductance per coil with ±20% tolerance. In parallel configuration, it offers 47 µH inductance, 89.8 mΩ maximum DCR, and 2.95 A rated current. In series configuration, it provides 188 µH inductance, 353 mΩ maximum DCR, and 1.47 A rated current. The component measures 12.50 mm x 12.50 mm x 8.00 mm and operates between -40°C and 125°C.
Feature Summary
- Dual-coil magnetic shielding design minimizes electromagnetic interference
- Supports flexible circuit topology through independent series or parallel connection options
- High saturation currents ensure stable performance under heavy load conditions
Applications
- DC/DC converter output filtering
- Power supply input stages
- Automotive electronic systems
Procurement Notes
Verify the specific suffix (TR, CT, or DKR) to confirm packaging type before ordering. Confirm RoHS3 compliance status for environmental regulations. Check lead times as standard delivery may extend to thirty-three weeks. Ensure the footprint matches the 12.50mm x 12.50mm dimensions on the PCB layout.
Selection Notes
Select this component when dual isolated inductors are required in a compact surface-mount package. Compare series versus parallel electrical characteristics against circuit requirements. Verify that the 12.50mm square footprint fits within the available board space constraints. Consider thermal management capabilities given the operating temperature range limits.
Part Context
This part belongs to the Bourns SRF1280 series of shielded power inductor arrays. The series utilizes wire-wound technology with ferrite cores to achieve high efficiency. These components are designed for applications requiring robust magnetic shielding and high current handling in limited spaces.
Replacement Considerations
Consult official Bourns documentation for verified cross-reference parts. Do not substitute without confirming pinout compatibility and electrical parameter equivalence.
