Molding SMD Power Inductors - SMS1770 Series
Product Overview
The LANTU SMS1770 Series is an ultra-high current, thin-profile SMD power inductor designed for high-density installations. Featuring magnetic shielding for strong anti-electromagnetic interference, these inductors offer high reliability with an integral construction for excellent vibration resistance. Their composite structure minimizes buzz noise, while the low-loss alloy powder die-casting ensures low impedance and small parasitic capacitance, contributing to high efficiency and reduced core eddy-current loss. With a frequency capability up to 3MHz and an absolute maximum voltage of 30VDC, they are suitable for applications like PDA, notebooks, desktops, servers, high current POL converters, battery-powered devices, and DC/DC converters in distributed power systems. These inductors are RoHS, Halogen Free, and REACH compliant.
Product Attributes
- Brand: LANTU (SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.)
- Series: SMS1770
- Type: Molding SMD Power Inductor
- Certifications: RoHS, Halogen Free, REACH Compliance
- Origin: Shenzhen, China
Technical Specifications
| Part No | Inductance (H) @0A | Tolerance | DCR (m) Typical | DCR (m) Max | Saturation Current (A) Typical | Heat Rating Current (A) Typical | Dimensions (LWH mm) | Operating Temperature (C) | Absolute Maximum Voltage (VDC) |
|---|---|---|---|---|---|---|---|---|---|
| SMS1770-R22M | 0.22 | 20% | 0.63 | 0.75 | 75.00 | 57.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-R47M | 0.47 | 20% | 0.90 | 1.03 | 72.00 | 55.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-1R0M | 1.0 | 20% | 1.60 | 2.30 | 55.00 | 32.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-1R5M | 1.5 | 20% | 1.78 | 2.50 | 48.00 | 31.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-2R2M | 2.2 | 20% | 2.40 | 2.70 | 34.00 | 29.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-3R3M | 3.3 | 20% | 3.68 | 4.20 | 30.00 | 24.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-4R7M | 4.7 | 20% | 4.84 | 5.50 | 24.00 | 21.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-5R6M | 5.6 | 20% | 6.68 | 7.60 | 23.00 | 20.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-6R8M | 6.8 | 20% | 8.40 | 9.20 | 22.00 | 17.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-8R2M | 8.2 | 20% | 10.10 | 11.60 | 20.00 | 13.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-100M | 10 | 20% | 11.60 | 13.00 | 19.00 | 12.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-150M | 15 | 20% | 18.80 | 20.50 | 14.50 | 11.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-220M | 22 | 20% | 25.10 | 26.50 | 11.50 | 8.50 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-330M | 33 | 20% | 38.00 | 44.00 | 10.00 | 8.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-470M | 47 | 20% | 48.00 | 55.00 | 7.50 | 6.00 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-560M | 56 | 20% | 54.00 | 62.00 | 7.00 | 5.50 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-680M | 68 | 20% | 68.00 | 80.00 | 6.50 | 5.20 | 17.5017.157.50 | -55 to +125 | 30 |
| SMS1770-101M | 100 | 20% | 110.00 | 118.00 | 5.00 | 3.70 | 17.5017.157.50 | -55 to +125 | 30 |
Inductance Tolerance Codes:
- J: 5%
- K: 10%
- L: 15%
- M: 20%
- P: 25%
- N: 30%
Packaging:
- Bulk Package
- Tape & Reel
Test Equipment:
- Inductance (L): WK3260B LCR meter or equivalent
- Saturation Current (Isat) & Heat Rating Current (Irms): WK3260B+WK3265B or equivalent
- DC Resistance (DCR): Chroma 16502 or equivalent
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 between Isat and Irms.
Recommended Land Pattern (Dimensions in mm):
| Part No | A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|---|
| SMS1770 | 17.50.50 | 17.150.30 | 7.50 Max | 12.0 Typ | 2.50 Typ | 12.4 | 19.5 | 12.5 |
Recommended Reflow Soldering Curve:
The recommended reflow conditions are set according to the manufacturer's soldering equipment. Users should adjust and confirm conditions based on their specific environment and equipment.
Reminders for Using These Products:
- Storage: Within 12 months, at 5~40C and 35~65% RH. Solderability may deteriorate beyond this period.
- Environment: Avoid use and storage in gas corrosive environments (salt, acid, alkali, etc.).
- Handling: Avoid direct contact with terminals by bare hands due to oils. Handle carefully to prevent damage from dropping.
- Terminal Bending: Do not bend terminals excessively to avoid wire fracture.
- Cleaning: Do not rinse coils. Contact the manufacturer if cleaning is necessary.
- Magnetic Fields: Do not expose products to magnets or magnetic fields.
- Preheating: Preheating is required before soldering. Temperature difference between solder and chip should not exceed 150C.
- Soldering Corrections: Post-mounting soldering corrections should adhere to specifications. Overheating may cause short circuits, performance degradation, or reduced lifespan.
- Thermal Design: Allow sufficient margin for self-heating when power is applied.
- Non-Magnetic Shield Type: Careful coil layout is needed to prevent malfunctions due to magnetic interference.
2410121647_LanTu-Micro-SMS1770-6R8MT_C7603118.pdf
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