SDR1005-471KL Bourns Inductor (Inductor Moulded) In Stock
Bourns SDR1005-471KL is a 470 µH ferrite-core power inductor in a 5039 case with 1.7 Ω DC resistance, designed for general-purpose power filtering and energy storage in DC-DC converters and switching power supply circuits.
- Manufacturer
- Bourns
- Package
- Inductor Moulded
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SDR1005-471KL Datasheet PDF
- Category
- Inductor
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 470 µH nominal inductance in a compact 5039 rectangular ferrite-core package for power supply filtering
- 1.7 Ω DC resistance specification supports current-rating calculations for buck and boost converter output stages
- Ferrite core construction minimizes core losses at switching frequencies typical of modern DC-DC converters
- Moulded construction provides mechanical robustness and vibration resistance for industrial and automotive power designs
- RoHS-compliant lead-free construction meets global environmental standards for end-product compliance
Applications
The SDR1005-471KL is used as an output filter inductor in DC-DC buck converters, boost regulators, and SEPIC topologies where 470 µH inductance is needed to smooth switching ripple and store energy. It is also applied in EMI filter networks on power rails in industrial control equipment and telecommunications power supplies. Its moulded ferrite construction makes it reliable in embedded systems that require passive power conditioning across wide temperature ranges.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 14Weeks |
| YTEOL | 6.1 |
| Case/Size Code | 5039 |
| Construction | Rectangular |
| Core Material | FERRITE |
| DC Resistance | 1.7Ω |
| Inductance-Nom (L) | 470 µH |
| Inductor Application | POWER INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| JESD-609 Code | e2 |
| Number of Functions | 1 |
| Package Height | 5mm |
| Package Length | 12.7mm |
| Package Style | SMT |
| Package Width | 10mm |
| Packing Method | TR, EMBOSSED, 13 INCH |
| Rated Current-Max | 0.45A |
| Self Resonance Frequency | 4MHz |
| Shape/Size Description | RECTANGULAR PACKAGE |
| Shielded | NO |
| Surface Mount | YES |
| Terminal Finish | COPPER TIN |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | ONE SURFACE |
| Test Frequency | 0.001MHz |
| Tolerance | 10% |
| Package | Inductor Moulded |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8504.50.80.00 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What inductance and DC resistance does the SDR1005-471KL provide for power converter output filtering?
The SDR1005-471KL provides 470 µH of nominal inductance with a DC resistance of 1.7 Ω. This combination is well suited for low-to-medium current DC-DC converter output stages where the inductor stores energy during the switch-on phase and releases it to maintain a smooth output voltage, making it common in 5 V to 12 V regulated power supply designs.
How does the ferrite core construction of SDR1005-471KL affect efficiency in switching power supplies?
The ferrite core in the SDR1005-471KL provides high magnetic permeability that enables the 470 µH inductance in a compact 5039 footprint, while keeping core losses low at switching frequencies from 20 kHz to several hundred kHz. Lower core loss translates to higher converter efficiency, which is important in battery-powered systems targeting 90 % or better power conversion efficiency.
What current rating should designers verify for the SDR1005-471KL in a buck converter design?
Designers must verify both the saturation current and the rated DC current against the 1.7 Ω DC resistance to ensure the copper loss budget and temperature rise stay within acceptable limits for the chosen PCB thermal design. For a buck converter operating at 12 V input and 5 V output, the 470 µH inductor with 1.7 Ω resistance typically limits continuous output current to under 500 mA before excessive heating occurs.
Which PCB form factor does the SDR1005-471KL occupy and how does it compare to smaller SMD inductors at the same inductance?
The SDR1005-471KL occupies a 5039 rectangular SMD footprint (approximately 12.5 mm × 10 mm) to accommodate the 470 µH winding within a moulded ferrite structure. Smaller SMD inductors achieving 470 µH in a 1210 or 0805 footprint must use thinner wire, resulting in higher DC resistance above 5 Ω, which makes the SDR1005-471KL the preferred choice when keeping I²R loss below 1.5 W at 500 mA matters.
Related Guides
1.5KE Series TVS Diode EOL Cross-Reference and Equivalent Replacements
Cross-reference guide for EOL 1.5KE TVS diodes (1.5KE15A, 1.5KE36A, 1.5KE200A, 1.5KE100CA). Match standoff voltage, polarity, and 1500W rating to find active equivalents.
Jun 16, 2026
Microchip Serial EEPROM NRND Cross-Reference Guide: 25LC080, 25AA640, 25AA080, 24C08 to Active Equivalents
Cross-reference guide for Microchip NRND serial EEPROMs: 25LC080, 25AA640, 25AA080A (SPI) and 24C08B (I2C) to active A/B-revision drop-in replacements.
Jun 16, 2026
1N5817 / 1N5820 / 1N5822 Schottky Diode Cross-Reference: Active Drop-In Replacements
Find active drop-in replacements for obsolete 1N5817, 1N5820, and 1N5822 Schottky rectifiers. Compare specs, cross-reference table, and sourcing tips.
Jun 16, 2026
ADSP-2147x SHARC DSP Selection Guide: How to Choose the Right Variant for Your Audio Design
Compare ADSP-21477, ADSP-21478, and ADSP-21479 SHARC+ DSP variants by clock speed, memory, package, and temperature grade to find the right fit for your audio DSP design.
Jun 16, 2026
Why Buy from FindMyChip
About Bourns
Bourns is a leading electronic component manufacturer. FindMyChip sources Bourns ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Bourns
3214X-1-202E
Other
Variable Resistor
5250-RC
Inductors, Axial Diameter Horizontal Mounting
Inductor
5.0SMDJ54CA-Q
Diodes Moulded Non Polarised
TVS Diode (Bi-directional)
5.0SMDJ75A-Q
Diodes Moulded
TVS Diode (Uni-directional)
51AAA-C24-B15L
Other
Variable Resistor
5800-103-RC
Inductors, Axial Diameter Horizontal Mounting
Inductor
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”