SRR3818A-6R8Y Bourns Inductor (Other) In Stock
Bourns SRR3818A-6R8Y is a 6.8 µH ferrite-core power inductor with 0.16 Ω DC resistance in a compact 3.8 x 3.8 mm SMD package. Designed for general-purpose power applications, it supports DC-DC converter filtering and energy storage with high efficiency and stable inductance.
- Manufacturer
- Bourns
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SRR3818A-6R8Y Datasheet PDF
- Category
- Inductor
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 6.8 µH inductance with only 0.16 Ω DC resistance for efficient power filtering with minimal copper losses
- Ferrite rectangular core construction (1515 case code) for stable inductance across wide load current ranges
- Compact 3.8 x 3.8 mm SMD footprint enabling high-density power supply layouts on space-constrained PCBs
- General-purpose power inductor rated for DC-DC converter, buck, boost, and SEPIC filter applications
Applications
The SRR3818A-6R8Y is used as an output inductor in DC-DC buck and boost converters operating in portable electronics, industrial power supplies, and IoT devices where a 6.8 µH inductance value and low 0.16 Ω DC resistance support efficient energy storage and ripple filtering. Its compact 3.8 x 3.8 mm SMD package also makes it suitable for point-of-load regulators on dense PCBs in embedded computing and automotive auxiliary power circuits.
Specifications
| Factory Lead Time | 22Weeks |
| YTEOL | 6.7 |
| Case/Size Code | 1515 |
| Construction | Rectangular |
| Core Material | FERRITE |
| DC Resistance | 0.16Ω |
| Inductance-Nom (L) | 6.8 µH |
| Inductor Application | POWER INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Height | 1.8mm |
| Package Length | 3.8mm |
| Package Style | SMT |
| Package Width | 3.8mm |
| Packing Method | TR, Embossed, 7 Inch |
| Rated Current-Max | 1.6A |
| Reference Standard | AEC-Q200 |
| Self Resonance Frequency | 50MHz |
| Shape/Size Description | RECTANGULAR PACKAGE |
| Shielded | YES |
| Surface Mount | YES |
| Terminal Finish | Tin (Sn) |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | WRAPAROUND |
| 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 are the key electrical specifications of the Bourns SRR3818A-6R8Y power inductor?
The SRR3818A-6R8Y has a nominal inductance of 6.8 µH and a DC resistance of 0.16 Ω, housed in a 3.8 x 3.8 mm (1515 case code) SMD package with a ferrite rectangular core. These parameters make it well-suited for output filtering in DC-DC buck converters, where low DCR minimizes conduction losses and 6.8 µH provides effective ripple attenuation at typical switching frequencies of 300 kHz to 1 MHz.
In which DC-DC converter topologies is the SRR3818A-6R8Y most effectively used?
The SRR3818A-6R8Y is most commonly used in synchronous buck, boost, and SEPIC converter topologies where a 6.8 µH ferrite-core inductor with 0.16 Ω DCR supports efficient energy transfer. It is particularly well-matched to converters switching at 300 kHz to 1 MHz in portable battery-powered devices, IoT nodes, and point-of-load regulators on industrial control boards requiring stable 6.8 µH inductance under varying load currents.
How does the SRR3818A-6R8Y's ferrite core construction benefit power supply performance compared to an iron-powder core alternative?
The ferrite core in the SRR3818A-6R8Y provides lower core losses at high switching frequencies (typically above 200 kHz) compared to iron-powder cores, resulting in higher converter efficiency at the same 6.8 µH inductance. Ferrite also maintains more stable inductance under DC bias at rated current, ensuring consistent ripple filtering performance in DC-DC converters where iron-powder inductors would exhibit significant inductance rolloff.
What SMT assembly considerations apply to the SRR3818A-6R8Y in a high-volume production environment?
The SRR3818A-6R8Y is supplied in a compact 3.8 x 3.8 mm SMD package compatible with automated pick-and-place equipment and standard lead-free reflow soldering profiles peaking at 260°C. The JESD-609 code e3 indicates halogen-free, RoHS-compliant materials. The 22-week factory lead time noted in specifications means procurement planning is essential for production schedules, and building safety stock or ordering to the tape-and-reel quantity is recommended for uninterrupted supply.
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