High Saturation Current Shielded SMD Power Inductors LanTu Micro SDRI127-151MT for DC DC Converters
Shielded SMD Power Inductors - SDRI127 Series
Product Overview
The SDRI127 Series Shielded SMD Power Inductors from SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD. are designed for high-performance power supply applications. Featuring a closed magnetic circuit to minimize leakage, these inductors offer high saturation current and low DCR. Their highly accurate dimensions ensure suitability for automatic mounting processes. Available in various package sizes and a wide inductance range, they are RoHS, Halogen Free, and REACH compliant, making them ideal for VTRs, LCD televisions, notebook PCs, portable communication equipment, and DC/DC converters.
Product Attributes
- Brand: LANTU MICRO
- Origin: SHENZHEN, China
- Certifications: RoHS, Halogen Free, REACH Compliance
- Type: Shielded SMD Power Inductors (Closed magnetic circuit)
- Packaging Options: Bulk Package (B), Tape & Reel (T)
Technical Specifications
General Characteristics:
- Operating Temperature: -40 to +125 (Including coil self-temperature rise)
Dimensions:
| Part No. | External Dimensions (LWH) (mm) | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | H (mm) |
|---|---|---|---|---|---|---|---|---|---|
| SDRI127 | 12.5 12.5 8.0 | 12.5 Max | 12.5 Max | 8.0 Max | 5.0 | 7.6 | 2.9 | 7.0 | 5.4 |
Electrical Characteristics:
| Part No. | Inductance (H) | Tolerance | Test Freq (@0A) | Q Min (@Test Freq) | DCR () Max | Saturation Current (A) Max | Temperature Rise Current (A) Max |
|---|---|---|---|---|---|---|---|
| SDRI127-1R0N | 1.0 | 30% | 100KHz | 20 | 0.009 | 26.00 | 10.00 |
| SDRI127-2R2N | 2.2 | 30% | 100KHz | 20 | 0.012 | 21.00 | 8.00 |
| SDRI127-2R7N | 2.7 | 30% | 100KHz | 20 | 0.013 | 19.00 | 8.00 |
| SDRI127-3R3N | 3.3 | 30% | 100KHz | 20 | 0.013 | 16.00 | 8.00 |
| SDRI127-3R9N | 3.9 | 30% | 100KHz | 20 | 0.013 | 14.00 | 7.50 |
| SDRI1274R7N | 4.7 | 30% | 100KHz | 30 | 0.016 | 12.00 | 6.80 |
| SDRI127-6R1N | 6.1 | 30% | 100KHz | 30 | 0.018 | 11.50 | 6.60 |
| SDRI127-6R8N | 6.8 | 30% | 100KHz | 30 | 0.019 | 10.50 | 6.60 |
| SDRI127-7R6N | 7.6 | 30% | 100KHz | 30 | 0.020 | 10.00 | 5.90 |
| SDRI127-8R2N | 8.2 | 30% | 100KHz | 30 | 0.020 | 9.50 | 5.60 |
| SDRI127-100N | 10 | 30% | 100KHz | 35 | 0.021 | 9.00 | 5.40 |
| SDRI127-120M | 12 | 20% | 100KHz | 35 | 0.240 | 8.50 | 4.90 |
| SDRI127-150M | 15 | 20% | 100KHz | 35 | 0.027 | 8.00 | 4.50 |
| SDRI127-180M | 18 | 20% | 100KHz | 35 | 0.039 | 7.50 | 3.90 |
| SDRI127-220M | 22 | 20% | 100KHz | 35 | 0.043 | 7.00 | 3.60 |
| SDRI127-270M | 27 | 20% | 100KHz | 35 | 0.046 | 6.50 | 3.40 |
| SDRI127-330M | 33 | 20% | 100KHz | 35 | 0.065 | 5.50 | 3.00 |
| SDRI127-390M | 39 | 20% | 100KHz | 35 | 0.072 | 5.00 | 2.75 |
| SDRI127-470M | 47 | 20% | 100KHz | 35 | 0.100 | 4.60 | 2.50 |
| SDRI127-560M | 56 | 20% | 100KHz | 35 | 0.110 | 4.40 | 2.35 |
| SDRI127-680M | 68 | 20% | 100KHz | 35 | 0.140 | 4.00 | 2.10 |
| SDRI127-820M | 82 | 20% | 100KHz | 35 | 0.160 | 3.80 | 1.95 |
| SDRI127-101M | 100 | 20% | 100KHz | 40 | 0.220 | 3.50 | 1.70 |
| SDRI127-121M | 120 | 20% | 100KHz | 40 | 0.250 | 3.00 | 1.60 |
| SDRI127-151M | 150 | 20% | 100KHz | 40 | 0.280 | 2.70 | 1.42 |
| SDRI127-181M | 180 | 20% | 100KHz | 40 | 0.350 | 2.50 | 1.30 |
| SDRI127-221M | 220 | 20% | 100KHz | 40 | 0.390 | 2.00 | 1.16 |
| SDRI127-271M | 270 | 20% | 100KHz | 40 | 0.560 | 1.95 | 1.06 |
| SDRI127-331M | 330 | 20% | 100KHz | 40 | 0.640 | 1.90 | 0.95 |
| SDRI127-391M | 390 | 20% | 100KHz | 40 | 0.700 | 1.65 | 0.88 |
| SDRI127-471M | 470 | 20% | 100KHz | 40 | 0.980 | 1.50 | 0.79 |
| SDRI127-561M | 560 | 20% | 100KHz | 40 | 1.070 | 1.40 | 0.73 |
| SDRI127-681M | 680 | 20% | 100KHz | 40 | 1.460 | 1.30 | 0.67 |
| SDRI127-821M | 820 | 20% | 100KHz | 40 | 1.640 | 1.10 | 0.60 |
| SDRI127-102M | 1000 | 20% | 100KHz | 40 | 1.820 | 1.00 | 0.55 |
Saturation Current: DC current at which inductance drops 30% from its value without current.
Temperature Rise 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.
Note: Circuit design, component, PCB trace size and thickness, airflow, and other cooling provisions all affect the part temperature. Part temperature should be verified in the end application.
Test Equipment:
- Inductance (L): HP4284A, HP4285A LCR meter or equivalent
- Saturation Current (Isat) & Temperature Rise Current (Irms): HP4284+42841A or equivalent
- Quality Factor (Q): HP4285A or equivalent
- DC Resistance (DCR): Chroma 16502 or equivalent
Product Identification Example: SDRI 127 470 M T
- Type: SDRI
- Outer Dimensions (LWH): 127 (12.512.58.0 mm)
- Inductance: 470 (47 H)
- Inductance Tolerance: M (20%)
- Packing: T (Tape & Reel)
Inductance Tolerance Codes: J:5%, K: 10%, L: 15%, M: 20%, P: 25%, N: 30%
Packaging Specifications:
| Part No. | Tape Dimension W (mm) | Tape Dimension P (mm) | Tape Dimension H (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) |
|---|---|---|---|---|---|---|---|---|---|---|
| SDRI127 | 24 | 16 | 11.5 | 24.4 | 100 | 13 | 330 | 500 | 1000 | 4000 |
Cover tape peel off force: 10 to 120g. Peel angle: 165 to 180.
Recommended Land Pattern: (Refer to document for diagram)
Recommended Reflow Soldering Curve: (Refer to document for diagram and parameters)
Reminders for Using These Products:
- Storage Period: Within 12 months. Conditions: temperature 5~40C, humidity 35~65% RH or less.
- Avoid use and storage in corrosive environments (salt, acid, alkali, etc.).
- Avoid direct contact with terminals by bare hands to prevent soldering issues.
- Handle products carefully to prevent damage from dropping or improper removal.
- Do not bend terminals excessively to avoid wire fracture.
- Do not rinse coils; contact LANTU MICRO if cleaning is necessary.
- Keep away from 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 prevent short circuits, performance degradation, or lifespan reduction.
- Allow sufficient thermal design margin for self-heating during operation.
- For non-magnetic shielded types, careful coil layout is required on the PCB to prevent malfunctions due to magnetic interference.
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