Molding SMD Power Inductors Featuring LanTu Micro SMS0420-3R3MT Ultra High Current Low DC Resistance
Molding SMD Power Inductors - SMS0420 Series
Product Overview
The SMS0420 Series Ultra-high current SMD power inductors from SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD. are designed for high-density installations requiring low DC resistance and ultra-high current capabilities in a thin profile. Featuring magnetic shielding for strong anti-electromagnetic interference, these inductors offer high reliability and excellent vibration resistance due to their integral construction. The composite structure minimizes buzz noise, while the low-loss alloy powder die-casting ensures low impedance and small parasitic capacitance, leading to high efficiency. Suitable for a wide range of applications including PDAs, notebooks, desktop and server applications, high current POL converters, battery-powered devices, and DC/DC converters in distributed power systems, these inductors operate at frequencies up to 3MHz and have an absolute maximum voltage of 30VDC. They are RoHS, Halogen Free, and REACH compliant.
Product Attributes
- Brand: LANTU MICRO ELECTRIC TECHNOLOGY (implied by company name and logo repetitions)
- Origin: SHENZHEN, CHINA (implied by company name)
- Product Type: Molding SMD Power Inductor
- Series: SMS0420
- Certifications: RoHS, Halogen Free, REACH Compliance
Technical Specifications
Series Overview & Electrical Characteristics
| Part No | Inductance (H) @ 100KHz, 1.0V | Tolerance | DCR (m) Typical | DCR (m) Max | Saturation Current (A) Typical | Heat Rating Current (A) Typical |
|---|---|---|---|---|---|---|
| SMS0420-R10M | 0.10 | 20% | 3.5 | 4.0 | 25.00 | 13.00 |
| SMS0420-R22M | 0.22 | 20% | 6.0 | 6.8 | 13.00 | 9.50 |
| SMS0420-R33M | 0.33 | 20% | 8.0 | 11.0 | 11.00 | 7.00 |
| SMS0420-R47M | 0.47 | 20% | 12.0 | 14.0 | 9.50 | 8.00 |
| SMS0420-R56M | 0.56 | 20% | 14.0 | 16.0 | 9.00 | 7.00 |
| SMS0420-R68M | 0.68 | 20% | 18.0 | 21.0 | 8.00 | 7.00 |
| SMS0420-1R0M | 1.0 | 20% | 24.0 | 27.0 | 7.00 | 6.00 |
| SMS0420-1R2M | 1.2 | 20% | 25.0 | 27.0 | 6.00 | 5.50 |
| SMS0420-1R5M | 1.5 | 20% | 40.0 | 46.0 | 5.50 | 5.00 |
| SMS0420-2R2M | 2.2 | 20% | 52.0 | 58.0 | 5.00 | 4.50 |
| SMS0420-3R3M | 3.3 | 20% | 70.0 | 87.0 | 4.00 | 3.50 |
| SMS0420-4R7M | 4.7 | 20% | 105.0 | 126.0 | 3.00 | 2.80 |
| SMS0420-6R8M | 6.8 | 20% | 120.0 | 135.0 | 2.50 | 2.40 |
| SMS0420-100M | 10 | 20% | 220.0 | 258.0 | 2.00 | 1.60 |
| SMS0420-150M | 15 | 20% | 280.0 | 320.0 | 1.90 | 1.40 |
| SMS0420-220M | 22 | 20% | 450.0 | 510.0 | 1.50 | 1.20 |
Inductance Tolerance Options
Inductance Tolerance: J:5%, K: 10%, L: 15%, M: 20%, P: 25%, N: 30%
Dimensions
| Part No | A (L) (mm) | B (W) (mm) | C (H) (mm) | D (Typ) (mm) | E (Typ) (mm) | F (Typ) (mm) | G (Typ) (mm) |
|---|---|---|---|---|---|---|---|
| SMS0420 | 4.600.30 | 4.200.20 | 2.00Max | 1.50Typ | 0.80 Typ | 2.20 | 5.20 |
Environmental Data
Operating Temperature: -55 to +125 (Including coils self-temperature rise)
General Specifications
- Frequency: Up to 3MHz
- Absolute Maximum Voltage: 30VDC
- Saturation Current Definition: DC current at which inductance drops 30% from its value without current.
- Heat Rating Current Definition: The actual value of DC current when the temperature rise is T 40 (Ta=25).
- Rated DC Current: The lesser value of Isat or Irms.
- Test Equipment: L: WK3260B LCR meter or equivalent; Isat & Irms: WK3260B+WK3265B or equivalent; DCR: Chroma 16502 or equivalent.
Product Identification Example
Model Structure: SMS 0420 100 M T
- : Type (SMS - Molding SMD Power Inductor)
- : Inductance (e.g., 100 for 10 uH)
- : External Dimensions (0420 for 4.64.22.0 mm)
- : Inductance Tolerance (M for 20%)
- : Packing (T for Tape & Reel)
Packaging Information
| Part No | Tape Dimension W (mm) | Tape Dimension P (mm) | Tape Dimension W1 (mm) | Reel Dimensions A (mm) | Reel Dimensions B (mm) | Reel Dimensions C (mm) | Reel Dimensions D (mm) | Reel (PCS) | Inside Box (PCS) | Outside Carton (PCS) |
|---|---|---|---|---|---|---|---|---|---|---|
| SMS0420 | 12.0 | 8.0 | 5.5 | 12.4 | 100 | 13 | 330 | 3000 | 12,000 | 48,000 |
Cover tape peel off condition: Cover tape peel force: 10 to 120g; Noodle strip peeling angle: 165 to 180.
Reliability Testing
Testing includes Terminal Strength (SMT & DIP), Resistance to Flexure, Dropping, Solderability, Vibration, Thermal Shock, Low temperature Storage, High temperature Storage, Damp Heat (Steady States), Heat endurance of Reflow soldering, Resistance to solvent test, Overload test, and Voltage resistance test. Specific requirements and test methods are detailed in the original document.
Recommended Reflow Soldering Curve
Users should adjust and confirm reflow conditions according to their specific environment and equipment.
Reminders for Using These Products
- Storage period: within 12 months. Storage conditions: temperature 5~40C, humidity 35~65% RH or less.
- Do not use or store in gas corrosive environments (salt, acid, alkali, etc.).
- Avoid direct contact with terminals by bare hands due to oil secretions.
- Handle products carefully to prevent damage.
- Do not bend terminals with excessive stress.
- Do not rinse coils; contact the manufacturer if cleaning is necessary.
- Do not expose products to magnets or magnetic fields.
- Preheat components before soldering; temperature difference between solder and chip should not exceed 150C.
- Soldering corrections after mounting should be within specified conditions to avoid overheating.
- Allow sufficient thermal design margin for self-heating during operation.
- For non-magnetic shield types, careful coil layout is required to prevent malfunctions due to magnetic interference.
Get in Touch
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