SRR3818A-1R0Y Bourns Inductor (Other) In Stock
The SRR3818A-1R0Y is a 1 µH ferrite-core SMD power inductor from Bourns with a 0.037-ohm DC resistance in a compact 1515 case size, suited for high-efficiency DC-DC converter filter and energy-storage applications.
- Manufacturer
- Bourns
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SRR3818A-1R0Y 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
- 1 µH nominal inductance with ultra-low 0.037 Ω DC resistance for minimal conduction losses in switching power supply filter stages
- Ferrite core construction in a rectangular 1515 SMD package enabling high-density power inductor placement on compact PCBs
- General-purpose power inductor design compatible with buck, boost, and SEPIC DC-DC converter topologies requiring low DCR energy storage
Applications
The SRR3818A-1R0Y is designed for power inductor applications in DC-DC buck and boost converters, point-of-load regulators, and battery charging circuits operating at high switching frequencies. Its 1 µH inductance and 0.037-ohm DCR minimize conduction losses and support high peak currents in compact switch-mode power supplies for consumer electronics and industrial equipment. The 1515 case footprint fits on densely populated PCBs in portable devices, IoT modules, and telecom power distribution boards.
Specifications
| Factory Lead Time | 22Weeks |
| YTEOL | 8 |
| Case/Size Code | 1515 |
| Construction | Rectangular |
| Core Material | FERRITE |
| DC Resistance | 0.037Ω |
| Inductance-Nom (L) | 1 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 | 3.6A |
| Reference Standard | AEC-Q200 |
| Self Resonance Frequency | 165MHz |
| 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 inductance value and DC resistance does the SRR3818A-1R0Y offer for power converter designs?
The SRR3818A-1R0Y provides 1 µH nominal inductance and a DC resistance of only 0.037 ohms. The low DCR minimizes I²R conduction losses in switch-mode power supply inductors, supporting efficient energy transfer in buck and boost converters at switching frequencies above 1 MHz.
Which DC-DC converter topologies is SRR3818A-1R0Y suitable for, given its 1 µH inductance?
A 1 µH ferrite inductor like the SRR3818A-1R0Y suits high-frequency buck, boost, and SEPIC converters typically switching between 500 kHz and 5 MHz. At these frequencies, 1 µH maintains acceptable ripple current without excessive physical size, making it a standard choice for point-of-load regulators in mobile, IoT, and telecom power supplies.
How does the 1515 case size of SRR3818A-1R0Y affect PCB layout options compared to larger power inductors?
The 1515 case code corresponds to approximately 3.8 mm × 3.8 mm footprint, notably smaller than common 4040 or 5050 power inductors. This compact footprint reduces PCB area consumed by the inductor by roughly 50% compared to a 4040 package, freeing space for filter capacitors and control ICs in dense point-of-load converter designs.
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