Beijing Silk Road Enterprise Management Services Co., Ltd.
                                                                                                           
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Magnetic resin shielded LanTu Micro SNR4018-330MT power inductors with space saving and power profile

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Product Description

Product Overview

The SNR4018 Series Magnetic Resin Shielded SMD Power Inductors are automatic assembly constructed power inductors designed for high-performance applications. Featuring a magnetic-resin shielded construction, these inductors 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 profile. These inductors are widely used in electronic devices such as LED backlights, flat-screen TVs, notebooks, servers, graphics cards, and automotive systems, as well as in DC-DC converters. They comply with RoHS, Halogen Free, and REACH standards.

Product Attributes

  • Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
  • Series: SNR4018
  • Construction: Automatic assembly, Magnetic resin shielded
  • Certifications: RoHS, Halogen Free, REACH Compliance
  • Core Material: Ferrite Core (metallized electrodes)
  • Magnetic Circuit: Closed magnetic circuit design

Technical Specifications

Part No. Inductance (H) Tolerance Test Frequency DCR () Typical DCR () Max Saturation Current (A) Max Temperature Rise Current (A) Max Dimensions (LWH) (mm)
SNR4018-R24M 0.24 20% 100KHz, 1.0V 0.014 0.018 4.30 4.00 4.04.01.8
SNR4018-1R0M 1.0 20% 100KHz, 1.0V 0.025 0.033 4.80 2.00 4.04.01.8
SNR4018-1R5M 1.5 20% 100KHz, 1.0V 0.030 0.039 3.35 1.80 4.04.01.8
SNR4018-2R2M 2.2 20% 100KHz, 1.0V 0.034 0.050 2.70 1.65 4.04.01.8
SNR4018-3R3M 3.3 20% 100KHz, 1.0V 0.070 0.091 2.45 1.23 4.04.01.8
SNR4018-4R7M 4.7 20% 100KHz, 1.0V 0.090 0.115 1.70 1.20 4.04.01.8
SNR4018-6R8M 6.8 20% 100KHz, 1.0V 0.110 0.140 1.45 1.06 4.04.01.8
SNR4018-100M 10 20% 100KHz, 1.0V 0.180 0.230 1.30 0.84 4.04.01.8
SNR4018-150M 15 20% 100KHz, 1.0V 0.250 0.320 0.94 0.65 4.04.01.8
SNR4018-220M 22 20% 100KHz, 1.0V 0.360 0.450 0.80 0.59 4.04.01.8
SNR4018-330M 33 20% 100KHz, 1.0V 0.530 0.689 0.56 0.49 4.04.01.8
SNR4018-470M 47 20% 100KHz, 1.0V 0.650 0.845 0.57 0.42 4.04.01.8
SNR4018-560M 56 20% 100KHz, 1.0V 0.760 0.988 0.50 0.40 4.04.01.8
SNR4018-680M 68 20% 100KHz, 1.0V 1.000 1.300 0.47 0.32 4.04.01.8
SNR4018-101M 100 20% 100KHz, 1.0V 1.750 2.200 0.40 0.25 4.04.01.8
SNR4018-151M 150 20% 100KHz, 1.0V 2.500 3.000 0.31 0.22 4.04.01.8
Item A B C D E F G H
SNR4018 Recommended Land Pattern (mm) 4.00.3 4.00.3 1.8 Max 2.10.2 3.30.2 1.1 Typ 1.9 Typ 3.7 Typ
Inductance Tolerance Code Description
J 5%
K 10%
L 15%
M 20%
P 25%
N 30%
Packing Code Description
B Bulk Package
T Tape & Reel
Environmental Data Value
Operating Temperature -40 to +125 (Including coils self-temperature rise)
Test Equipment Instrument
Inductance (L) HP4284A, HP4285A or equivalent LCR meter
Current (Isat & Irms) HP4284+42841A or equivalent
DC Resistance (DCR) Chroma 16502 or equivalent
Packaging Quantity REEL (PCS) Inside Box (PCS) Outside Carton (PCS)
SNR4018 3000 12,000 48,000

Note on Current Ratings:

  • 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.
  • 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.

Reminders for Using These Products:

  • Storage period is within 12 months. Storage 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 touching electrodes directly with bare hands due to oil secretions that may inhibit soldering.
  • Handle products carefully to prevent damage from dropping or inappropriate removal.
  • Do not bend terminals with excessive stress to avoid 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. The temperature difference between solder and chip temperature should not exceed 150C.
  • Soldering corrections after mounting should be within specified conditions. Overheating may cause short circuits, performance degradation, or lifespan reduction.
  • Allow for sufficient thermal design margin as self-heating occurs when power is on.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Beijing Silk Road Enterprise Management Services Co., Ltd.
Location 16 Floor, Unit B, Jiatai International Mansion, No 41, Dongsihuan Zhong Road, Chaoyang District, Beijing
Contact Person Sellina

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