Molding SMD Power Inductors - SMS1050 Series
Product Overview
The SMS1050 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 and excellent vibration resistance due to their integral construction. The composite structure minimizes buzz noise, while the use of low-loss alloy powder in die-casting results in low impedance and small parasitic capacitance, contributing to high efficiency and reduced core eddy-current loss. These inductors support frequencies up to 3MHz and have an absolute maximum voltage of 30VDC. They are RoHS, Halogen Free, and REACH compliant.
Product Attributes
- Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
- Series: SMS1050
- Type: Molding SMD Power Inductor
- Certifications: RoHS, Halogen Free, REACH Compliance
- Construction: Integral construction, Magnetic shielding
- Material: Low-loss alloy powder
Technical Specifications
General Specifications
| Attribute | Value |
| Operating Temperature | -55 to +125 (Including coils self-temperature rise) |
| Frequency Capability | Up to 3MHz |
| Absolute Maximum Voltage | 30VDC |
| Dimensions (LWH) | 11.510.05.0 mm (for SMS1050 series) |
Electrical Characteristics (Electrical specifications at 25)
| Part No. | Inductance (H) @ 0A | Tolerance | DCR (m) Typical | DCR (m) Max | Saturation Current (A) Typical | Heat Rating Current (A) Typical |
| SMS1050-R82M | 0.82 | 20% | 2.5 | 3.2 | 39.00 | 22.00 |
| SMS1050-1R0M | 1.0 | 20% | 2.8 | 3.5 | 30.00 | 20.30 |
| SMS1050-1R2M | 1.2 | 20% | 2.8 | 3.5 | 28.00 | 18.00 |
| SMS1050-1R5M | 1.5 | 20% | 3.9 | 4.8 | 25.00 | 16.00 |
| SMS1050-2R2M | 2.2 | 20% | 6.5 | 8.2 | 20.00 | 13.00 |
| SMS1050-3R3M | 3.3 | 20% | 9.2 | 12.0 | 18.00 | 10.00 |
| SMS1050-4R7M | 4.7 | 20% | 12.4 | 18.0 | 14.00 | 9.50 |
| SMS1050-5R6M | 5.6 | 20% | 18.9 | 25.0 | 13.00 | 8.50 |
| SMS1050-6R8M | 6.8 | 20% | 20.6 | 28.0 | 12.00 | 8.00 |
| SMS1050-8R2M | 8.2 | 20% | 27.4 | 35.0 | 10.00 | 7.00 |
| SMS1050-100M | 10 | 20% | 30.2 | 40.0 | 8.50 | 5.50 |
| SMS1050-150M | 15 | 20% | 48.0 | 55.0 | 7.00 | 4.50 |
| SMS1050-220M | 22 | 20% | 60.0 | 72.0 | 5.50 | 4.00 |
| SMS1050-330M | 33 | 20% | 89.0 | 105.0 | 5.50 | 3.50 |
| SMS1050-470M | 47 | 20% | 110.0 | 130.0 | 4.50 | 3.00 |
| SMS1050-680M | 68 | 20% | 190.0 | 210.0 | 3.00 | 2.00 |
Shape and Dimensions (dimensions are in mm)
| Part No. | A (Max) | B (0.30) | C (Max) | D (Typ) | E (Typ) | F | G | H |
| SMS1050 | 11.50 | 10.00 | 5.00 | 3.00 | 2.00 | 5.40 | 13.60 | 4.10 |
Inductance Tolerance Codes
| Code | Tolerance |
| J | 5% |
| K | 10% |
| L | 15% |
| M | 20% |
| P | 25% |
| N | 30% |
Packing Options
| Code | Description |
| B | Bulk Package |
| T | Tape & Reel |
Definitions
- Saturation Current: DC current at which inductance drops 30% from its value without current.
- Heat Rating Current: 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.
Applications
- PDA, notebook, desktop, server applications
- High current POL converters
- Battery powered devices
- DC/DC converters in distributed power systems
Test Equipment
- Inductance (L): WK3260B LCR meter or equivalent
- Current (Isat & Irms): WK3260B + WK3265B or equivalent
- DC Resistance (DCR): Chroma 16502 or equivalent
