ME3220-222MLB COILCRAFT Inductor (Inductors Precision Moulded) In Stock
The Coilcraft ME3220-222MLB is a 2.2 µH unshielded ferrite power inductor in a compact 1211 (3.2 x 2.8 mm) SMT case with only 0.104 Ω DC resistance. It is designed for general-purpose power conversion and filtering in space-constrained SMT designs.
- Manufacturer
- COILCRAFT
- Package
- Inductors Precision Moulded
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- ME3220-222MLB Datasheet PDF
- Category
- Inductor
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2.2 µH nominal inductance in a compact 1211 (3.2 x 2.8 mm) case for high-density power supply designs
- Ultra-low DC resistance of 0.104 Ω minimizes conduction losses and improves efficiency in DC-DC converters
- Ferrite core construction supports high-frequency power conversion with low core losses
- Pb-free and RoHS compliant, suitable for environmentally regulated consumer and industrial products
Applications
The ME3220-222MLB is designed for SMT power supply filtering, DC-DC converter output stages, and EMI suppression in consumer electronics, wearables, and IoT devices where a 2.2 µH low-loss inductor must fit within a minimal 1211 board footprint. Its low 0.104 Ω DCR makes it suitable for output filter inductors in buck converters operating at switching frequencies from several hundred kHz to a few MHz. The unshielded ferrite construction provides cost-effective inductance for non-magnetically sensitive layouts.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Case/Size Code | 1211 |
| Construction | Unshielded |
| Core Material | FERRITE |
| DC Resistance | 0.104Ω |
| Inductance-Nom (L) | 2.2 µH |
| Inductor Application | POWER INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| Number of Functions | 1 |
| Package Height | 2mm |
| Package Length | 3.2mm |
| Package Style | SMT |
| Package Width | 2.8mm |
| Packing Method | TR |
| Rated Current-Max | 2A |
| Self Resonance Frequency | 92.6MHz |
| Shape/Size Description | RECTANGULAR PACKAGE |
| Shielded | NO |
| Surface Mount | YES |
| Terminal Finish | Tin/Silver/Copper - Matte Tin -with Nickel barrier |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | WRAPAROUND |
| Test Frequency | 0.1MHz |
| Tolerance | 20% |
| Package | Inductors Precision Moulded |
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 is the inductance value and DC resistance of the ME3220-222MLB?
The ME3220-222MLB has a nominal inductance of 2.2 µH and a DC resistance of 0.104 Ω. The low DCR is beneficial in power inductor applications such as DC-DC converter output filters, where resistive losses directly reduce converter efficiency and increase output voltage ripple at load currents above 1 A.
Which switching converter topologies work well with the ME3220-222MLB's 2.2 µH inductance?
A 2.2 µH inductance is appropriate for buck, boost, and SEPIC converters operating at switching frequencies between 500 kHz and 2 MHz, which represent the most common range for modern PMICs. At 1 MHz switching frequency, a 2.2 µH inductor provides sufficient energy storage to keep output ripple below 50 mV in typical 3.3 V to 1.8 V step-down stages powering microcontrollers and FPGAs.
How does the 1211 package size of the ME3220-222MLB affect PCB layout?
The 1211 case code corresponds to a footprint of approximately 3.2 mm x 2.8 mm, which is compact enough to fit near the switching node of an integrated DC-DC converter without requiring dedicated inductor keep-out zones on adjacent layers. This allows power stages to be tightly integrated within less than 100 mm² of board area in wearable and mobile designs.
Is the ME3220-222MLB shielded, and how should that influence PCB layout decisions?
The ME3220-222MLB uses an unshielded ferrite construction, meaning its magnetic field extends beyond the component body and can couple into nearby sensitive analog traces or low-noise amplifier inputs. Best practice is to maintain a clearance of at least 3 mm to 5 mm from precision analog circuits and to route sensitive signals perpendicular to the inductor's axis to minimize EMI coupling in the PCB layout.
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