Magnetic Resin Shielded SMD Power Inductor LanTu Micro SNR4020-1R0MT with Low DC Resistance and High Current Handling
Product Overview
The 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 capability with low DC resistance, and metallization on the ferrite core for excellent shock 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 systems, and DC-DC converters.
Product Attributes
- Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
- Series: SNR4020
- Construction: Magnetic resin shielded, automatic assembly
- Certifications: RoHS, Halogen Free, REACH Compliance
Technical Specifications
| Part No. | Inductance (H) | Inductance Tolerance | L @ 100KHz, 1.0V (H) | DCR () Typical | DCR () Max | Saturation Current (A) Max | Temperature Rise Current (A) Max | Dimensions (LWH) (mm) |
|---|---|---|---|---|---|---|---|---|
| SNR4020-R47M | 0.47 | 20% | 0.47 | 0.022 | 0.029 | 7.00 | 3.30 | 4.04.02.0 |
| SNR4020-1R0M | 1.0 | 20% | 1.0 | 0.029 | 0.038 | 4.78 | 2.15 | 4.04.02.0 |
| SNR4020-1R5M | 1.5 | 20% | 1.5 | 0.035 | 0.045 | 4.45 | 2.15 | 4.04.02.0 |
| SNR4020-2R2M | 2.2 | 20% | 2.2 | 0.035 | 0.046 | 3.40 | 1.85 | 4.04.02.0 |
| SNR4020-3R3M | 3.3 | 20% | 3.3 | 0.070 | 0.091 | 3.20 | 1.40 | 4.04.02.0 |
| SNR4020-4R7M | 4.7 | 20% | 4.7 | 0.075 | 0.098 | 2.35 | 1.34 | 4.04.02.0 |
| SNR4020-6R8M | 6.8 | 20% | 6.8 | 0.125 | 0.163 | 2.20 | 1.04 | 4.04.02.0 |
| SNR4020-8R2M | 8.2 | 20% | 8.2 | 0.148 | 0.185 | 1.75 | 1.00 | 4.04.02.0 |
| SNR4020-100M | 10 | 20% | 10 | 0.165 | 0.215 | 1.60 | 0.90 | 4.04.02.0 |
| SNR4020-150M | 15 | 20% | 15 | 0.230 | 0.300 | 1.35 | 0.77 | 4.04.02.0 |
| SNR4020-220M | 22 | 20% | 22 | 0.350 | 0.455 | 1.05 | 0.62 | 4.04.02.0 |
| SNR4020-330M | 33 | 20% | 33 | 0.550 | 0.710 | 0.85 | 0.49 | 4.04.02.0 |
| SNR4020-470M | 47 | 20% | 47 | 0.710 | 0.920 | 0.74 | 0.44 | 4.04.02.0 |
| SNR4020-680M | 68 | 20% | 68 | 1.060 | 1.380 | 0.60 | 0.36 | 4.04.02.0 |
Environmental Data
| Parameter | Value |
|---|---|
| Operating Temperature | -40 to +125 (Including coils self-temperature rise) |
Dimensions
| Item | 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 |
Packaging
| Packing Type | Description |
|---|---|
| Bulk Package | B |
| Tape & Reel | T |
Product Identification Example
SNR4020-470M
- SNR: Series
- 4020: External Dimensions (LWH) (mm)
- 470: Inductance (47 uH)
- M: Inductance Tolerance (20%)
Inductance Tolerance Options
- J: 5%
- K: 10%
- L: 15%
- M: 20%
- P: 25%
- N: 30%
Test Equipment
- Inductance (L): HP4284A, HP4285A or equivalent LCR meter
- Saturation Current (Isat) & Temperature Rise Current (Irms): HP4284+42841A or equivalent
- DC Resistance (DCR): Chroma 16502 or equivalent
Reliability Testing
The product undergoes various reliability tests including Terminal Strength, Resistance to Flexure, Dropping, Solderability, Vibration, Thermal Shock, Low Temperature Storage, High Temperature Storage, Damp Heat, Heat endurance of Reflow soldering, Resistance to solvent, Overload test, and Voltage resistance test, with specified requirements and test methods documented.
Recommended Reflow Soldering Curve
Refer to the provided graph for recommended reflow conditions. Users should adjust and confirm based on their specific equipment and process conditions.
Reminders for Using These Products
- Storage: Within 12 months, under 5~40C and 35~65% RH.
- Environment: Avoid gas corrosive environments (salt, acid, alkali).
- Handling: Avoid direct contact with terminals; handle carefully to prevent damage.
- Soldering: Preheat components before soldering; ensure temperature difference between solder and chip is within 150C.
- Thermal Design: Account for self-heating when power is ON.
- Magnetic Fields: Do not expose to magnets or magnetic fields.
- Cleaning: Do not rinse coils; contact manufacturer if cleaning is necessary.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.