Power supply inductors LanTu Micro SDRI125-221MT shielded SMD type with low DC resistance and high saturation current
Product Overview
The SDRI125 Series Shielded SMD Power Inductors from SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD. are designed for high-performance power supply applications. These inductors feature a high saturation current, low DC resistance, and a closed magnetic circuit design to minimize leakage flux. Their high-accuracy dimensions ensure suitability for automatic mounting. The series offers a wide range of inductance values and package sizes, complying with RoHS, Halogen Free, and REACH standards. Applications include power supplies for VTRs, LCD televisions, Notebook PCs, portable communication equipment, and DC/DC converters.
Product Attributes
- Brand: LANTU MICRO ELECTRIC TECHNOLOGY
- Origin: SHENZHEN
- Product Series: SDRI125 Series
- Type: Shielded SMD Power Inductors
- Magnetic Circuit Design: Closed magnetic circuit
- Compliance: RoHS, Halogen Free, REACH
- Operating Temperature: -40 to +125 (including coil self-temperature rise)
Technical Specifications
| Part No. | Inductance (H) | Tolerance | Test Frequency (L @ 0A) | Q Factor Min. (Test Freq.) | DCR () Max. | Saturation Current (A) Max. | Temperature Rise Current (A) Max. | External Dimensions (LWH) (mm) |
|---|---|---|---|---|---|---|---|---|
| SDRI125-1R0N | 1.0 | 30% | 100KHz | 20 (1MHz) | 0.010 | 15.80 | 8.00 | 12.312.36.0 |
| SDRI125-2R2N | 2.2 | 30% | 100KHz | 20 (1MHz) | 0.014 | 13.50 | 7.80 | 12.312.36.0 |
| SDRI125-2R4N | 2.4 | 30% | 100KHz | 20 (1MHz) | 0.014 | 12.00 | 7.50 | 12.312.36.0 |
| SDRI125-3R3N | 3.3 | 30% | 100KHz | 20 (1MHz) | 0.017 | 10.50 | 6.80 | 12.312.36.0 |
| SDRI125-4R7N | 4.7 | 30% | 100KHz | 30 (1MHz) | 0.020 | 9.50 | 5.60 | 12.312.36.0 |
| SDRI125-5R8N | 5.8 | 30% | 100KHz | 30 (1MHz) | 0.021 | 8.60 | 5.20 | 12.312.36.0 |
| SDRI125-8R2N | 8.2 | 30% | 100KHz | 30 (1MHz) | 0.023 | 7.00 | 4.40 | 12.312.36.0 |
| SDRI125-100N | 10 | 30% | 100KHz | 35 (1MHz) | 0.025 | 6.50 | 4.00 | 12.312.36.0 |
| SDRI125-120M | 12 | 20% | 100KHz | 35 (1MHz) | 0.027 | 6.00 | 3.50 | 12.312.36.0 |
| SDRI125-150M | 15 | 20% | 100KHz | 35 (1MHz) | 0.030 | 5.40 | 3.30 | 12.312.36.0 |
| SDRI125-180M | 18 | 20% | 100KHz | 35 (1MHz) | 0.034 | 4.90 | 3.00 | 12.312.36.0 |
| SDRI125-220M | 22 | 20% | 100KHz | 35 (1MHz) | 0.036 | 4.70 | 2.80 | 12.312.36.0 |
| SDRI125-270M | 27 | 20% | 100KHz | 35 (1MHz) | 0.051 | 4.00 | 2.30 | 12.312.36.0 |
| SDRI125-330M | 33 | 20% | 100KHz | 35 (1MHz) | 0.057 | 3.58 | 2.10 | 12.312.36.0 |
| SDRI125-390M | 39 | 20% | 100KHz | 35 (1MHz) | 0.068 | 3.30 | 2.00 | 12.312.36.0 |
| SDRI125-470M | 47 | 20% | 100KHz | 35 (1MHz) | 0.075 | 3.20 | 1.80 | 12.312.36.0 |
| SDRI125-560M | 56 | 20% | 100KHz | 35 (1MHz) | 0.110 | 2.80 | 1.70 | 12.312.36.0 |
| SDRI125-680M | 68 | 20% | 100KHz | 35 (1MHz) | 0.120 | 2.50 | 1.50 | 12.312.36.0 |
| SDRI125-820M | 82 | 20% | 100KHz | 35 (1MHz) | 0.140 | 2.30 | 1.40 | 12.312.36.0 |
| SDRI125-101M | 100 | 20% | 100KHz | 40 (0.796MHz) | 0.160 | 1.90 | 1.30 | 12.312.36.0 |
| SDRI125-121M | 120 | 20% | 100KHz | 40 (0.796MHz) | 0.170 | 1.80 | 1.10 | 12.312.36.0 |
| SDRI125-151M | 150 | 20% | 100KHz | 40 (0.796MHz) | 0.230 | 1.70 | 1.00 | 12.312.36.0 |
| SDRI125-181M | 180 | 20% | 100KHz | 40 (0.796MHz) | 0.290 | 1.60 | 0.90 | 12.312.36.0 |
| SDRI125-221M | 220 | 20% | 100KHz | 40 (0.796MHz) | 0.400 | 1.45 | 0.80 | 12.312.36.0 |
| SDRI125-271M | 270 | 20% | 100KHz | 40 (0.796MHz) | 0.460 | 1.20 | 0.75 | 12.312.36.0 |
| SDRI125-331M | 330 | 20% | 100KHz | 40 (0.796MHz) | 0.510 | 1.15 | 0.68 | 12.312.36.0 |
| SDRI125-391M | 390 | 20% | 100KHz | 40 (0.796MHz) | 0.690 | 1.10 | 0.65 | 12.312.36.0 |
| SDRI125-471M | 470 | 20% | 100KHz | 40 (0.796MHz) | 0.770 | 0.94 | 0.58 | 12.312.36.0 |
| SDRI125-561M | 560 | 20% | 100KHz | 40 (0.796MHz) | 0.860 | 0.90 | 0.54 | 12.312.36.0 |
| SDRI125-681M | 680 | 20% | 100KHz | 40 (0.796MHz) | 1.200 | 0.70 | 0.48 | 12.312.36.0 |
| SDRI125-821M | 820 | 20% | 100KHz | 40 (0.796MHz) | 1.340 | 0.55 | 0.40 | 12.312.36.0 |
| SDRI125-102M | 1000 | 20% | 100KHz | 40 (0.796MHz) | 1.530 | 0.44 | 0.35 | 12.312.36.0 |
Definitions:
- 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.
Dimensions:
| Part No. | A (Max) | B (Max) | C (Max) | D | E | F | G | H |
|---|---|---|---|---|---|---|---|---|
| SDRI125 | 12.5 | 12.5 | 6.0 | 5.0 | 7.6 | 2.9 | 7.0 | 5.4 |
Packaging:
- Packing Types: Bulk Package (B), Tape & Reel (T)
- Tape & Reel Specifications: Available in 24mm width, 16mm pitch, 11.5mm height, 24.4mm reel diameter.
- Reel Dimensions: A: 24.4mm, B: 100mm, C: 13mm
- Packing Quantity: REEL (PCS): 500, Inside Box (PCS): 1000, Outside Carton (PCS): 4000
Reliability Testing:
The products undergo various reliability tests including 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 datasheet.
Recommended Reflow Soldering Curve:
A recommended reflow soldering curve is provided, emphasizing the need for users to adjust and confirm conditions based on their specific equipment and process.
Reminders for Using These Products:
- Storage: Within 12 months, under conditions of 5~40C and 35~65% RH.
- Environment: Avoid use and storage in corrosive gas environments (salt, acid, alkali, etc.).
- Handling: Avoid direct contact with terminals due to hand grease affecting solderability. Handle carefully to prevent damage.
- Bending: Do not excessively bend terminals to avoid wire fracture.
- Cleaning: Do not rinse coils; contact the manufacturer if cleaning is required.
- Magnetic Fields: Do not expose products to magnets or magnetic fields.
- Preheating: Preheat components before soldering; temperature difference between solder and chip should not exceed 150C.
- Soldering Corrections: Perform after mounting within specified conditions to avoid performance degradation.
- Self-Heating: Account for self-heating when performing thermal design.
- Non-Magnetic Shield Type: Careful coil layout is required to prevent malfunction due to magnetic interference.
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