Product Overview
The SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD. SNR4020 Series are automatic assembly, magnetic resin shielded SMD power inductors designed to minimize buzz noise to ultra-low levels. They feature a closed magnetic circuit design for reduced leakage flux and strong EMI resistance, large current handling, and low DC resistance. These space-saving and power-efficient inductors are suitable for a wide range of applications including LED backlights, flat-screen TVs, notebooks, servers, automotive products, and DC-DC converters.
Product Attributes
- Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
- Series: SNR4020
- Construction: Magnetic resin shielded, automatic assembly
- Magnetic Circuit: Closed
- Certifications: RoHS, Halogen Free, REACH Compliance
- Environmental Operating Temperature: -40 to +125 (including coil self-temperature rise)
Technical Specifications
| Part No. | Inductance (H) | Inductance Tolerance | Test Frequency (KHz) | Test Voltage (V) | DCR () Typical | DCR () Max | Saturation Current (A) Max | Temperature Rise Current (A) Max | Dimensions (LWH) (mm) |
|---|---|---|---|---|---|---|---|---|---|
| SNR4020-R47M | 0.47 | 20% | 100 | 1.0 | 0.022 | 0.029 | 7.00 | 3.30 | 4.04.02.0 |
| SNR4020-1R0M | 1.0 | 20% | 100 | 1.0 | 0.029 | 0.038 | 4.78 | 2.15 | 4.04.02.0 |
| SNR4020-1R5M | 1.5 | 20% | 100 | 1.0 | 0.035 | 0.045 | 4.45 | 2.15 | 4.04.02.0 |
| SNR4020-2R2M | 2.2 | 20% | 100 | 1.0 | 0.035 | 0.046 | 3.40 | 1.85 | 4.04.02.0 |
| SNR4020-3R3M | 3.3 | 20% | 100 | 1.0 | 0.070 | 0.091 | 3.20 | 1.40 | 4.04.02.0 |
| SNR4020-4R7M | 4.7 | 20% | 100 | 1.0 | 0.075 | 0.098 | 2.35 | 1.34 | 4.04.02.0 |
| SNR4020-6R8M | 6.8 | 20% | 100 | 1.0 | 0.125 | 0.163 | 2.20 | 1.04 | 4.04.02.0 |
| SNR4020-8R2M | 8.2 | 20% | 100 | 1.0 | 0.148 | 0.185 | 1.75 | 1.00 | 4.04.02.0 |
| SNR4020-100M | 10 | 20% | 100 | 1.0 | 0.165 | 0.215 | 1.60 | 0.90 | 4.04.02.0 |
| SNR4020-150M | 15 | 20% | 100 | 1.0 | 0.230 | 0.300 | 1.35 | 0.77 | 4.04.02.0 |
| SNR4020-220M | 22 | 20% | 100 | 1.0 | 0.350 | 0.455 | 1.05 | 0.62 | 4.04.02.0 |
| SNR4020-330M | 33 | 20% | 100 | 1.0 | 0.550 | 0.710 | 0.85 | 0.49 | 4.04.02.0 |
| SNR4020-470M | 47 | 20% | 100 | 1.0 | 0.710 | 0.920 | 0.74 | 0.44 | 4.04.02.0 |
| SNR4020-680M | 68 | 20% | 100 | 1.0 | 1.060 | 1.380 | 0.60 | 0.36 | 4.04.02.0 |
| SNR4020-101M | 100 | 20% | 100 | 1.0 | 1.500 | 1.950 | 0.55 | 0.31 | 4.04.02.0 |
| Inductance Tolerance Codes | Packing Codes |
|---|---|
| J: 5%, K: 10%, L: 15%, M: 20%, P: 25%, N: 30% | B: Bulk Package, T: Tape & Reel |
| Shape and Dimensions (mm) | A | B | C (Max) | D | E | F (Typ) | G (Typ) | H (Typ) |
|---|---|---|---|---|---|---|---|---|
| SNR4020 | 4.00.3 | 4.00.3 | 2.0 | 2.10.2 | 3.30.2 | 1.1 | 1.9 | 3.7 |
| Test Item | Requirements | Test Method and Remarks |
|---|---|---|
| Terminal Strength | Meet requirements without loose terminal | GB/T 2423.60-2008 (SMT/DIP) |
| Resistance to Flexure | No visible mechanical damage, no short, no open | JIS C 5321:1997 |
| Dropping | No case deformation, no change in appearance, no short, no open | GB/T 2423.7-2018 (1m drop) |
| Solderability | Wetting > 75% coverage, Terminals 95% minimum solder coverage | GB/T 2423.28-2005 (2402, 3 sec) |
| Vibration | No visible mechanical damage, Inductance change: 10%, Q factor change: 20% | GB/T 2423.10-2019 (10-55 Hz) |
| Thermal Shock | No visible mechanical damage, Inductance change: 10%, Q factor change: 20% | GB/T 2423.22-2012 Method Na (100 cycles) |
| Low Temperature Storage | No visible mechanical damage, Inductance change: 10%, Q factor change: 20% | GB/T 2423.1-2008 Method Ab (-402, 962 hours) |
| High Temperature Storage | No visible mechanical damage, Inductance change: 10%, Q factor change: 20% | GB/T 2423.2-2008 Method Bb (852, 962 hours) |
| Damp Heat (Steady States) | No visible mechanical damage, Inductance change: 10%, Q factor change: 20% | GB/T 2423.3-2016 (602, 90-95% RH, 962 hours) |
| Heat endurance of Reflow soldering | No significant defects, L/L10%, Q/Q30%, DCR/DCR10% | GJB 360B-2009 (Twice reflow, Peak temp: 260+0/-5) |
| Resistance to solvent test | No case deformation or change in appearance | IEC 68-2-45:1993 (IPA solvent) |
| Overload test | No smoke, smell, fire; characteristics normal after test | JIS C5311-6.13 (2x rated current for 5 min) |
| Voltage resistance test | No breakdown; characteristics normal after test | MIL-STD-202G Method 301 (DC1000V, 1mA, 1Min) |
Note: Saturation Current is the DC current at which inductance drops 30% from its value without current. Temperature Rise Current is the actual DC current when the temperature rise is T 40 (Ta=25). Rated DC Current is the lesser of Isat or Irms. Component temperature should be verified in the end application due to various factors affecting heat dissipation.
2410121442_LanTu-Micro-SNR4020-101MT_C5127549.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
