Product Overview
The SMS0420 Series Ultra-high current SMD power inductors from SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD. are designed for high-density installation with a thin profile, low DC resistance, and ultra-high current capabilities. Featuring magnetic shielding for strong anti-electromagnetic interference, these inductors offer high reliability through an integral construction that provides excellent vibration resistance. Their composite structure ensures ultra-low buzz noise, while the low-loss alloy powder die-casting contributes to low impedance and small parasitic capacitance, leading to high efficiency and reduced core eddy-current loss. These inductors operate at frequencies up to 3MHz and have an absolute maximum voltage of 30VDC, complying with RoHS, Halogen Free, and REACH standards. They are ideal for applications such as PDAs, notebooks, desktop and server applications, high current POL converters, battery-powered devices, and DC/DC converters in distributed power systems.
Product Attributes
- Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
- Product Type: Molding SMD Power Inductor
- Series: SMS0420 Series
- Certifications: RoHS, Halogen Free, REACH Compliance
Technical Specifications
General Specifications
| Specification | Value |
| Operating Temperature | -55 to +125 (Including coils self-temperature rise) |
| Absolute Maximum Voltage | 30VDC |
| Frequency Range | Up to 3MHz |
Electrical Characteristics (Electrical specifications at 25)
| Part No. | Inductance (H) @ 0A | Tolerance | DCR (m) Typical | Saturation Current (A) Typical | Heat Rating Current (A) Typical |
| SMS0420-R10M | 0.10 | 20% | 3.5 | 25.00 | 13.00 |
| SMS0420-R22M | 0.22 | 20% | 6.0 | 13.00 | 9.50 |
| SMS0420-R33M | 0.33 | 20% | 8.0 | 11.00 | 7.00 |
| SMS0420-R47M | 0.47 | 20% | 12.0 | 9.50 | 8.00 |
| SMS0420-R56M | 0.56 | 20% | 14.0 | 9.00 | 7.00 |
| SMS0420-R68M | 0.68 | 20% | 18.0 | 8.00 | 7.00 |
| SMS0420-1R0M | 1.0 | 20% | 24.0 | 7.00 | 6.00 |
| SMS0420-1R2M | 1.2 | 20% | 25.0 | 6.00 | 5.50 |
| SMS0420-1R5M | 1.5 | 20% | 40.0 | 5.50 | 5.00 |
| SMS0420-2R2M | 2.2 | 20% | 52.0 | 5.00 | 4.50 |
| SMS0420-3R3M | 3.3 | 20% | 70.0 | 4.00 | 3.50 |
| SMS0420-4R7M | 4.7 | 20% | 105.0 | 3.00 | 2.80 |
| SMS0420-6R8M | 6.8 | 20% | 120.0 | 2.50 | 2.40 |
| SMS0420-100M | 10 | 20% | 220.0 | 2.00 | 1.60 |
| SMS0420-150M | 15 | 20% | 280.0 | 1.90 | 1.40 |
| SMS0420-220M | 22 | 20% | 450.0 | 1.50 | 1.20 |
Inductance Tolerance Options
| Code | Tolerance |
| J | 5% |
| K | 10% |
| L | 15% |
| M | 20% |
| P | 25% |
| N | 30% |
Dimensions (mm)
| Part No. | A (L) | B (W) | C (H) | D (Typ) | E (Typ) | F (Typ) | G (Typ) | H (Typ) |
| SMS0420 | 4.600.30 | 4.200.20 | 2.00Max | 1.50Typ | 0.80 Typ | 2.20 | 5.20 | 2.50 |
Product Identification
SMS 0420 100 M T
- SMS: Type
- 0420: External Dimensions (LWH) (mm)
- 100: Inductance (e.g., 100 means 10 H)
- M: Inductance Tolerance (M = 20%)
- T: Packing Type (T = Tape & Reel)
Packaging
| Packing Type | Description |
| Bulk Package | B |
| Tape & Reel | T |
Tape and Reel Specifications
| 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 |
Reliability Testing
Details on Terminal Strength, Resistance to Flexure, Dropping, Solderability, Vibration, Thermal Shock, Low temperature Storage, High temperature Storage, Damp Heat, Heat endurance of Reflow soldering, Resistance to solvent test, Overload test, and Voltage resistance test are available, with specific requirements and test methods outlined in the original document.
Recommended Reflow Soldering Curve
Refer to the provided graph for recommended reflow conditions. Users should adjust and confirm these conditions based on their specific environment and equipment.
Reminders for Using These Products
- Storage period is within 12 months under 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 with bare hands due to oil secretions.
- Handle products carefully to prevent damage from dropping or improper removal.
- Do not bend terminals with excessive stress to avoid wire fracture.
- Do not rinse coils; contact the manufacturer if cleaning is necessary.
- Do not expose products to magnets or magnetic fields.
- Preheat components before soldering; ensure the temperature difference between solder and chip does not exceed 150C.
- Soldering corrections after mounting should be within specified conditions to avoid short circuits, performance deterioration, or lifespan shortening.
- Allow for sufficient thermal design margin due to self-heating when power is on.
- For non-magnetic shield types, careful layout is required to prevent malfunctions due to magnetic interference.
