SRU8045A-330Y Bourns Inductor (Other) In Stock
The Bourns SRU8045A-330Y is a 33 µH ferrite-core SMD power inductor in a 3232 (8.0x8.0 mm) package with 0.15 Ω DC resistance, designed for high-efficiency power filtering in DC-DC converters. It provides reliable inductance stability across wide temperature and current ranges for general-purpose power applications. Available in production quantities, this inductor is suited for industrial, consumer, and telecom power supply designs.
- Manufacturer
- Bourns
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- SRU8045A-330Y 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 ferrite-core inductance with low 0.15 Ω DCR for efficient energy storage in DC-DC converter filter stages
- Compact 3232 (8.0x8.0 mm) SMD package balances high inductance with manageable board footprint for power supply designs
- Rectangular construction with ferrite core provides stable inductance and high saturation resistance in power line filter applications
Applications
The Bourns SRU8045A-330Y is used in the output filter stages of step-down DC-DC converters in industrial control systems, networking equipment, and telecom power supplies where 33 µH inductance is required to reduce output ripple at moderate switching frequencies. Its ferrite core and 0.15 Ω DCR make it effective for continuous conduction mode (CCM) operation in supplies delivering 1 A to 3 A output currents. The inductor is also applied in EMI suppression filters and power line chokes in consumer electronics and embedded computing platforms.
Specifications
| Factory Lead Time | 16Weeks |
| YTEOL | 6.9 |
| Case/Size Code | 3232 |
| Construction | Rectangular |
| Core Material | FERRITE |
| DC Resistance | 0.15Ω |
| Inductance-Nom (L) | 33 µH |
| Inductor Application | POWER INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Height | 4.5mm |
| Package Length | 8mm |
| Package Style | SMT |
| Package Width | 8mm |
| Packing Method | TR, Embossed , 13 Inch |
| Rated Current-Max | 2A |
| Reference Standard | AEC-Q200 |
| Self Resonance Frequency | 8MHz |
| Shape/Size Description | RECTANGULAR PACKAGE |
| Shielded | YES |
| Surface Mount | YES |
| Terminal Finish | Tin (Sn) |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | ONE SURFACE |
| Test Frequency | 0.1MHz |
| Tolerance | 30% |
| 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 value and DC resistance does the SRU8045A-330Y offer for DC-DC converter designs?
The SRU8045A-330Y provides a nominal inductance of 33 µH with a DC resistance of 0.15 Ω. In a typical step-down converter operating at 300 kHz with a 12 V input and 5 V output, a 33 µH inductor effectively limits output current ripple to below 10% of the rated load current, supporting stable regulation. The 0.15 Ω DCR keeps conduction losses manageable at currents up to 2 A.
How does the SRU8045A-330Y's ferrite core compare to a metal-alloy core for power converter applications?
Ferrite cores such as those used in the SRU8045A-330Y offer high permeability and low core losses at moderate switching frequencies below 1 MHz, making them efficient for low-to-medium frequency DC-DC converters. Compared to metal-alloy cores, ferrite exhibits sharper saturation behavior, so the 33 µH rated inductance is maintained up to the saturation current limit, after which it drops rapidly. Designers should verify the saturation current spec matches their peak current requirements before selection.
What SMD footprint does the SRU8045A-330Y use, and is it compatible with standard pick-and-place assembly?
The SRU8045A-330Y uses a 3232 SMD package with a 8.0 mm x 8.0 mm body and 4.5 mm height. This rectangular chip inductor is compatible with automated SMT pick-and-place equipment using standard vacuum nozzles and can be reflowed using conventional lead-free solder profiles. The large 8x8 mm footprint provides a stable placement platform for the 33 µH inductor in power supply board layouts.
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