Product Overview
The SNR4018 Series by SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD. is an automatic assembly constructed, magnetic resin shielded SMD power inductor. Engineered for high performance, it significantly reduces buzz noise to ultra-low levels due to its magnetic-resin shielded construction. Key benefits include large current handling capacity, low DC resistance, excellent shock resistance and durability from metallization on the ferrite core, and strong EMI suppression thanks to its closed magnetic circuit design. This series is designed for space and power efficiency, making it ideal 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: SNR4018
- Construction: Automatic assembly, Magnetic resin shielded
- Certifications: RoHS, Halogen Free, REACH Compliance
Technical Specifications
| Part No. | Inductance (H) | Inductance Tolerance | Test Frequency | Test Voltage | DCR () Typical | DCR () Max | Saturation Current (A) Max | Temperature Rise Current (A) Max |
| SNR4018-R24M | 0.24 | 20% | 100KHz | 1.0V | 0.014 | 0.018 | 4.30 | 4.00 |
| SNR4018-1R0M | 1.0 | 20% | 100KHz | 1.0V | 0.025 | 0.033 | 4.80 | 2.00 |
| SNR4018-1R5M | 1.5 | 20% | 100KHz | 1.0V | 0.030 | 0.039 | 3.35 | 1.80 |
| SNR4018-2R2M | 2.2 | 20% | 100KHz | 1.0V | 0.340 | 0.550 | 2.70 | 1.65 |
| SNR4018-3R3M | 3.3 | 20% | 100KHz | 1.0V | 0.070 | 0.091 | 2.45 | 1.23 |
| SNR4018-4R7M | 4.7 | 20% | 100KHz | 1.0V | 0.090 | 0.115 | 1.70 | 1.20 |
| SNR4018-6R8M | 6.8 | 20% | 100KHz | 1.0V | 0.110 | 0.140 | 1.45 | 1.06 |
| SNR4018-100M | 10 | 20% | 100KHz | 1.0V | 0.180 | 0.230 | 1.30 | 0.84 |
| SNR4018-150M | 15 | 20% | 100KHz | 1.0V | 0.250 | 0.320 | 0.94 | 0.65 |
| SNR4018-220M | 22 | 20% | 100KHz | 1.0V | 0.360 | 0.450 | 0.80 | 0.59 |
| SNR4018-330M | 33 | 20% | 100KHz | 1.0V | 0.530 | 0.689 | 0.56 | 0.49 |
| SNR4018-470M | 47 | 20% | 100KHz | 1.0V | 0.650 | 0.845 | 0.57 | 0.42 |
| SNR4018-560M | 56 | 20% | 100KHz | 1.0V | 0.760 | 0.988 | 0.50 | 0.40 |
| SNR4018-680M | 68 | 20% | 100KHz | 1.0V | 1.000 | 1.300 | 0.47 | 0.32 |
| SNR4018-101M | 100 | 20% | 100KHz | 1.0V | 1.750 | 2.200 | 0.40 | 0.25 |
| SNR4018-151M | 150 | 20% | 100KHz | 1.0V | 2.500 | 3.000 | 0.31 | 0.22 |
| SNR4018-221M | 220 | 20% | 100KHz | 1.0V | 3.800 | 5.000 | 0.27 | 0.20 |
Dimensions
| Part No. | External Dimensions (LWH) (mm) | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | H (mm) |
| SNR4018 | 4.04.01.8 | 4.00.3 | 4.00.3 | 1.8 Max | 2.10.2 | 3.30.2 | 1.1 Typ | 1.9 Typ | 3.7 Typ |
Environmental Data
| Parameter | Value |
| Operating Temperature | -40 to +125 (Including coils self-temperature rise) |
Product Identification
Example: SNR 4018 470 M T
- SNR: Type (Shielded SMD Power Inductors)
- 4018: External Dimensions (LWH) (mm)
- 470: Inductance (e.g., 47 H)
- M: Inductance Tolerance (20%)
- T: Packing (Tape & Reel)
Inductance Tolerance Codes
| Code | Tolerance |
| J | 5% |
| K | 10% |
| L | 15% |
| M | 20% |
| P | 25% |
| N | 30% |
Packing Options
| Code | Description |
| B | Bulk Package |
| T | Tape & Reel |
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 Saturation Current or Temperature Rise Current.
Applications
- LED backlight
- Flat-screen TVs
- Blue-ray disc
- Set top box
- Notebooks
- Desktop computers
- Servers
- Graphic cards
- Portable gaming devices
- Personal navigation systems
- Personal multimedia devices
- Automotive systems
- Telecomm base station
- DC-DC Converter
