Low Noise Magnetic Resin Shielded Power Inductor LanTu Micro SNR8040-471MT with Enhanced EMI Resistance
Product Overview
The SNR8040 Series Magnetic Resin Shielded SMD Power Inductors from SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD. are automatic assembly constructed power inductors featuring magnetic resin shielding to significantly reduce buzz noise to ultra-low levels. They offer large current handling capabilities with low DC resistance, a closed magnetic circuit design for reduced leakage flux and enhanced EMI resistance, and a space-saving, power-efficient design. These inductors are suitable for a wide range of applications including LED backlights, flat-screen TVs, notebooks, servers, graphics cards, automotive systems, and DC-DC converters. They comply with RoHS, Halogen Free, and REACH standards.
Product Attributes
- Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
- Series: SNR8040
- Construction: Automatic assembly, Magnetic resin shielded
- Certifications: RoHS, Halogen Free, REACH Compliance
- Core Material: Ferrite Core (Metallization on Ferrite Core)
- Magnetic Circuit: Closed magnetic circuit design
Technical Specifications
| Part No. | Inductance (H) @ 100KHz, 1.0V | Tolerance | DCR () Typical | DCR () Max | Saturation Current (A) Max | Temperature Rise Current (A) Max |
|---|---|---|---|---|---|---|
| SNR8040-1R0M | 1.0 | 20% | 0.008 | 0.010 | 9.85 | 6.30 |
| SNR8040-1R5M | 1.5 | 20% | 0.010 | 0.013 | 8.15 | 5.65 |
| SNR8040-2R2M | 2.2 | 20% | 0.012 | 0.015 | 7.10 | 5.15 |
| SNR8040-3R3M | 3.3 | 20% | 0.017 | 0.022 | 6.50 | 4.40 |
| SNR8040-3R6M | 3.6 | 20% | 0.017 | 0.022 | 6.50 | 4.35 |
| SNR8040-4R7M | 4.7 | 20% | 0.019 | 0.024 | 5.90 | 4.10 |
| SNR8040-5R6M | 5.6 | 20% | 0.021 | 0.027 | 4.55 | 3.85 |
| SNR8040-6R8M | 6.8 | 20% | 0.024 | 0.031 | 4.55 | 3.60 |
| SNR8040-8R2M | 8.2 | 20% | 0.026 | 0.033 | 4.20 | 3.45 |
| SNR8040-100M | 10 | 20% | 0.029 | 0.037 | 3.60 | 3.30 |
| SNR8040-150M | 15 | 20% | 0.047 | 0.061 | 2.95 | 2.80 |
| SNR8040-180M | 18 | 20% | 0.053 | 0.068 | 2.70 | 2.40 |
| SNR8040-220M | 22 | 20% | 0.069 | 0.089 | 2.40 | 2.10 |
| SNR8040-270M | 27 | 20% | 0.078 | 0.101 | 2.15 | 2.00 |
| SNR8040-330M | 33 | 20% | 0.097 | 0.126 | 2.05 | 1.80 |
| SNR8040-390M | 39 | 20% | 0.107 | 0.139 | 1.95 | 1.70 |
| SNR8040-470M | 47 | 20% | 0.136 | 0.176 | 1.75 | 1.55 |
| SNR8040-680M | 68 | 20% | 0.196 | 0.254 | 1.45 | 1.25 |
| SNR8040-820M | 82 | 20% | 0.225 | 0.292 | 1.30 | 1.15 |
| SNR8040-101M | 100 | 20% | 0.290 | 0.377 | 1.15 | 1.00 |
| SNR8040-121M | 120 | 20% | 0.334 | 0.434 | 1.12 | 0.95 |
| SNR8040-151M | 150 | 20% | 0.410 | 0.553 | 1.10 | 0.85 |
| SNR8040-221M | 220 | 20% | 0.599 | 0.778 | 0.85 | 0.80 |
| SNR8040-331M | 330 | 20% | 0.889 | 1.155 | 0.68 | 0.64 |
| SNR8040-471M | 470 | 20% | 1.260 | 1.625 | 0.60 | 0.50 |
| SNR8040-681M | 680 | 20% | 2.040 | 2.652 | 0.50 | 0.45 |
| SNR8040-102M | 1000 | 20% | 2.800 | 3.640 | 0.40 | 0.35 |
| Dimensions (LWH) | Type | Inductance Tolerance | Packing |
|---|---|---|---|
| 8.08.04.0 mm | SNR8040 | J:5%, K: 10%, L: 15%, M: 20%, P: 25%, N: 30% | B: Bulk Package, T: Tape & Reel |
Environmental Data:
- Operating Temperature: -40 to +125 (Including coils self-temperature rise)
Test Equipment:
- Inductance (L): HP4284A, HP4285A LCR meter or equivalent
- Saturation Current (Isat) & Temperature Rise Current (Irms): HP4284+42841A or equivalent
- DC Resistance (DCR): Chroma 16502 or equivalent
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 between Isat and Irms.
Special Remind: 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.
Recommended Land Pattern (mm):
| Part No. | A | B | C | D | E | F | G | H | |
|---|---|---|---|---|---|---|---|---|---|
| SNR8040 | 8.00.3 | 8.00.3 | 4.0 Max | 4.00.3 | 6.30.3 | 2.2 Typ | 3.8 Typ | 7.5 Typ |
Packaging:
- Tape and Reel Specifications:
- Reel Dimensions (mm): A: 330, B: 100, C: 13, D: 12,000 (Total Reel Quantity)
- Tape Dimension (mm): W: 16, P: 12, W1: 7.5
- Packing Quantity: Reel: 1000 PCS, Inside Box: 3000 PCS, Outside Carton: 12,000 PCS
- Cover tape peel off condition: a) Cover tape peel force: 10 to 120g; b) Noodle strip peeling angle: 165 to 180.
Reminders for Using These Products:
- Storage period is within 12 months under conditions (temperature: 5~40C, humidity: 35 to 65% RH or less).
- Do not use or store in environments with gas corrosion (salt, acid, alkali, etc.).
- Avoid direct contact with terminals by bare hands due to oil secretions.
- Handle products carefully to prevent damage from dropping or inappropriate removal.
- Do not bend terminals with excessive stress to prevent 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 degradation, or lifespan reduction.
- Allow sufficient thermal design margin for self-heating when power is applied.
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