SDR0302-120ML Bourns Inductor (Other) In Stock
The Bourns SDR0302-120ML is a 12 µH ferrite core SMD power inductor in a 1211 case with 0.28 Ω DC resistance for efficient power conversion. Designed for general purpose and power inductor applications with RoHS-compliant construction. Available in stock with worldwide shipping.
- Manufacturer
- Bourns
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SDR0302-120ML 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
- 12 µH nominal inductance with low 0.28 Ω DC resistance in a compact 1211 case for efficient energy storage in DC-DC converters
- Ferrite core construction minimizes core losses at switching frequencies, improving efficiency in power inductor applications
- RoHS-compliant rectangular SMD package supports automated surface mount assembly in lead-free manufacturing processes
Applications
The SDR0302-120ML is suited for DC-DC buck and boost converter output filter inductors, power supply ripple attenuation, and energy storage in switching regulator circuits. Its 12 µH inductance and 0.28 Ω DC resistance balance efficiency and current handling for point-of-load regulators in embedded systems, IoT devices, and portable consumer electronics. The ferrite core construction supports operation at typical switching frequencies from 100 kHz to 1 MHz used in modern power management ICs.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 12Weeks |
| YTEOL | 6.8 |
| Case/Size Code | 1211 |
| Construction | Rectangular |
| Core Material | FERRITE |
| DC Resistance | 0.28Ω |
| Inductance-Nom (L) | 12 µH |
| Inductor Application | POWER INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| JESD-609 Code | e2 |
| Number of Functions | 1 |
| Package Height | 2.5mm |
| Package Length | 3mm |
| Package Style | SMT |
| Package Width | 2.8mm |
| Packing Method | TR, EMBOSSED, 13 INCH |
| Rated Current-Max | 0.75A |
| Self Resonance Frequency | 33MHz |
| Shape/Size Description | RECTANGULAR PACKAGE |
| Shielded | NO |
| Surface Mount | YES |
| Terminal Finish | SILVER NICKEL TIN |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | ONE SURFACE |
| Test Frequency | 0.1MHz |
| Tolerance | 20% |
| Package | Other |
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 DCR does the Bourns SDR0302-120ML offer for DC-DC converter filter designs?
The SDR0302-120ML provides 12 µH nominal inductance with a 0.28 Ω DC resistance. In a typical 500 kHz buck converter, a 12 µH output inductor reduces ripple current effectively, while the 0.28 Ω DCR limits power loss to under 28 mW at 300 mA continuous output current, balancing efficiency and filter performance.
What switching frequency range is the SDR0302-120ML ferrite inductor optimized for in power supply designs?
The SDR0302-120ML uses a ferrite core material that provides low core loss at switching frequencies between 100 kHz and 1 MHz, common in PWM DC-DC converters. At 12 µH inductance, this 1211-case power inductor achieves effective ripple current reduction without excessive volt-second product saturation in typical 3.3 V to 12 V converter applications.
How does the 1211 case size of the SDR0302-120ML affect PCB placement in space-constrained designs?
The 1211 case measures approximately 3.2 mm × 2.8 mm footprint, allowing the SDR0302-120ML 12 µH power inductor to fit in compact point-of-load regulator layouts. This SMD rectangular package supports automated placement with standard reflow soldering, making it suitable for embedded power supply modules, portable devices, and multi-rail power distribution boards where PCB area is limited.
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