SDR1005-330KL Bourns Inductor (Other) In Stock
Bourns SDR1005-330KL is a 33 µH ferrite-core power inductor in a 5039 SMT package with 0.12 Ω DC resistance. It provides general-purpose inductance for switching power supply filtering and energy storage, with lead-free construction and 10% tolerance for reliable DC-DC converter designs.
- Manufacturer
- Bourns
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SDR1005-330KL 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
- 33 µH inductance with low 0.12 Ω DC resistance (DCR) for efficient power inductor applications
- Ferrite core construction in 5039 (5.0 × 5.0 mm) SMT package enabling compact power supply layouts
- 10% inductance tolerance (K-grade) suitable for general-purpose switching regulator filter inductors
- Lead-free RoHS-compliant construction with rectangular ferrite body for surface-mount assembly
- Designed for power inductor applications in DC-DC converters, voltage regulators, and EMI filtering circuits
Applications
SDR1005-330KL is used as an output filter inductor in buck, boost, and SEPIC DC-DC converter designs where 33 µH inductance and low DCR are needed at switching frequencies from 100 kHz to 500 kHz. Its ferrite core and 5039 package make it suitable for industrial power supplies, battery chargers, and point-of-load regulators requiring compact SMT power magnetics. Designers also use it in EMI input filters and common-mode choke stages in AC-DC power conversion circuits.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 14Weeks |
| YTEOL | 6.9 |
| Case/Size Code | 5039 |
| Construction | Rectangular |
| Core Material | FERRITE |
| DC Resistance | 0.12Ω |
| Inductance-Nom (L) | 33 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 | 1.8A |
| Self Resonance Frequency | 14MHz |
| 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 | 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
Compatible alternatives and drop-in replacements for SDR1005-330KL:
suggested
Frequently Asked Questions
What inductance value and DCR does SDR1005-330KL provide, and how do these affect switching regulator efficiency?
SDR1005-330KL provides 33 µH nominal inductance with a DC resistance (DCR) of only 0.12 Ω. In a switching regulator, lower DCR reduces I²R conduction losses, and 33 µH sets the ripple current amplitude at a given switching frequency; at 200 kHz with a 5 V input and 3.3 V output, this value typically yields ripple currents under 20% of rated load current.
Which switching frequencies is SDR1005-330KL best suited for in a DC-DC converter design?
SDR1005-330KL's 33 µH ferrite-core inductor is well-matched to switching frequencies from approximately 100 kHz to 500 kHz, which is the typical range for mid-power buck and boost converters in industrial and consumer electronics. At lower frequencies the 33 µH value provides adequate ripple suppression, and the ferrite core maintains low core loss up to several hundred kilohertz.
What lead time and package details should engineers note when designing SDR1005-330KL into a new production product?
SDR1005-330KL has a 14-week factory lead time from Bourns, which is substantial for high-volume designs. Engineers should identify alternate 33 µH inductors in the 5039 (5.0 mm × 5.0 mm) footprint as dual-source options and build a minimum 8-week buffer stock. The part is lead-free and meets RoHS requirements, so no solderability concerns arise in standard SAC305 reflow processes.
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