SMD power inductor LanTu Micro SNR5040-101MT magnetic resin shielded for low DCR high current design
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Product Description
Product Overview
The SNR5040 Series is an automatic assembly, magnetic resin shielded SMD power inductor designed for high-current, low DCR applications. Its closed magnetic circuit design minimizes leakage flux and EMI, while the magnetic-resin shielded construction significantly reduces buzz noise to ultra-low levels. This series offers excellent shock resistance and durability due to metallization on the ferrite core. Designed for space and power efficiency, these inductors are RoHS, Halogen Free, and REACH compliant. They are widely used in applications such as LED backlights, flat-screen TVs, set-top boxes, notebooks, desktop computers, servers, graphic cards, portable gaming devices, personal navigation systems, multimedia devices, automotive products, telecommunication equipment, and DC-DC converters.
Product Attributes
- Brand: SHENZHEN LANTU MICRO ELECTRIC TECHNOLOGY CO., LTD.
- Series: SNR5040
- Type: Shielded SMD Power Inductors
- Construction: 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 |
|---|---|---|---|---|---|---|---|---|
| SNR5040-1R0M | 1.0 | 20% | 100KHz | 1.0V | 0.012 | 0.018 | 7.35 | 4.90 |
| SNR5040-1R2M | 1.2 | 20% | 100KHz | 1.0V | 0.016 | 0.021 | 6.50 | 4.30 |
| SNR5040-1R5M | 1.5 | 20% | 100KHz | 1.0V | 0.015 | 0.020 | 6.30 | 4.30 |
| SNR5040-2R2M | 2.2 | 20% | 100KHz | 1.0V | 0.019 | 0.025 | 4.90 | 3.80 |
| SNR5040-3R3M | 3.3 | 20% | 100KHz | 1.0V | 0.024 | 0.031 | 3.95 | 3.40 |
| SNR5040-4R7M | 4.7 | 20% | 100KHz | 1.0V | 0.030 | 0.039 | 3.50 | 3.00 |
| SNR5040-6R8M | 6.8 | 20% | 100KHz | 1.0V | 0.043 | 0.056 | 2.90 | 2.50 |
| SNR5040-8R2M | 8.2 | 20% | 100KHz | 1.0V | 0.050 | 0.070 | 2.70 | 2.30 |
| SNR5040-100M | 10 | 20% | 100KHz | 1.0V | 0.064 | 0.082 | 2.35 | 2.10 |
| SNR5040-120M | 12 | 20% | 100KHz | 1.0V | 0.077 | 0.102 | 2.20 | 2.00 |
| SNR5040-150M | 15 | 20% | 100KHz | 1.0V | 0.086 | 0.115 | 2.00 | 2.00 |
| SNR5040-220M | 22 | 20% | 100KHz | 1.0V | 0.129 | 0.167 | 1.60 | 1.50 |
| SNR5040-330M | 33 | 20% | 100KHz | 1.0V | 0.188 | 0.244 | 1.30 | 1.20 |
| SNR5040-470M | 47 | 20% | 100KHz | 1.0V | 0.272 | 0.353 | 1.10 | 1.00 |
| SNR5040-680M | 68 | 20% | 100KHz | 1.0V | 0.400 | 0.520 | 0.90 | 0.80 |
| SNR5040-820M | 82 | 20% | 100KHz | 1.0V | 0.560 | 0.660 | 0.80 | 0.75 |
| SNR5040-101M | 100 | 20% | 100KHz | 1.0V | 0.509 | 0.728 | 0.75 | 0.70 |
| SNR5040-121M | 120 | 20% | 100KHz | 1.0V | 0.665 | 0.864 | 0.70 | 0.65 |
| SNR5040-151M | 150 | 20% | 100KHz | 1.0V | 0.750 | 0.975 | 0.65 | 0.60 |
| SNR5040-221M | 220 | 20% | 100KHz | 1.0V | 1.400 | 1.820 | 0.48 | 0.40 |
| SNR5040-331M | 330 | 20% | 100KHz | 1.0V | 2.000 | 2.730 | 0.42 | 0.40 |
| SNR5040-471M | 470 | 20% | 100KHz | 1.0V | 3.000 | 3.900 | 0.37 | 0.35 |
| SNR5040-681M | 680 | 20% | 100KHz | 1.0V | 3.900 | 5.070 | 0.30 | 0.25 |
| SNR5040-102M | 1000 | 20% | 100KHz | 1.0V | 6.000 | 7.800 | 0.21 | 0.23 |
| Inductance Tolerance Codes | Packing Codes |
|---|---|
| J: 5%, K: 10%, L: 15%, M: 20%, P: 25%, N: 30% | B: Bulk Package, T: Tape & Reel |
| Dimensions (mm) | A | B | C (Max) | D | E | F (Typ) | G (Typ) | H (Typ) |
|---|---|---|---|---|---|---|---|---|
| SNR5040 | 5.00.3 | 5.00.3 | 4.0 | 2.50.2 | 4.00.2 | 1.4 | 2.3 | 4.2 |
| Environmental Data | Specification |
|---|---|
| Operating Temperature | -40 to +125 (Including coils self-temperature rise) |
| Test Equipment | Instrument |
|---|---|
| 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 |
| Packaging Details (Tape & Reel) | W (mm) | P (mm) | W1 (mm) | Reel Diameter (mm) | Inside Box (PCS) | Outside Carton (PCS) | Total Reel Quantity | ||
|---|---|---|---|---|---|---|---|---|---|
| SNR5040 | 12 | 8 | 5.5 | 100 | 13 | 330 | 1500 | 6000 | 24,000 |
| Reliability Testing Items | Requirements | Test Methods and Remarks |
|---|---|---|
| Terminal Strength (SMT) | Meet requirements without loose terminal | Pulling test based on terminal area; Solder paste thickness: 0.12mm; Keep time: 101s; Speed: 1.0mm/s |
| Terminal Strength (DIP) | Meet requirements without loose terminal | Pull force applied gradually for 10 seconds, varying with terminal diameter |
| Resistance to Flexure | No visible mechanical damage | Flexure: 2mm; Pressurizing Speed: 0.5mm/sec; Keep time: 30 sec |
| Dropping | No case deformation or change in appearance; No short and no open | Drop from 1m height in 1 angle, 3 ridges and 6 surfaces, twice in each direction |
| Solderability | Wetting shall exceed 75% coverage; Terminals must have 95% minimum solder coverage | Solder temperature: 2402; Duration: 3 sec; Solder: Sn/3.0Ag/0.5Cu; Flux: 25% Resin and 75% ethanol |
| Vibration | Inductance change: Within 10%; Q factor change: Within 20% | Frequency 10-55 Hz, amplitude 1.5mm, 2 hours in 3 perpendicular directions |
| Thermal Shock | Inductance change: Within 10%; Q factor change: Within 20% | 100 cycles of temperature shock between -40 to +125; Transforming interval: Max. 20 sec |
| Low temperature Storage | Inductance change: Within 10%; Q factor change: Within 20% | -402 for 962 hours |
| High temperature Storage | Inductance change: Within 10%; Q factor change: Within 20% | 852 for 962 hours |
| Damp Heat (Steady States) | Inductance change: Within 10%; Q factor change: Within 20% | 602, 90% to 95% RH for 962 hours |
| Heat endurance of Reflow soldering | L/L10%; Q/Q30%; DCR/DCR10% | Two reflow cycles with peak temperature: 260+0/-5 |
| Resistance to solvent test | No case deformation or change in appearance or obliteration of marking | Dip in IPA solvent for 50.5Min, dry for 5Min, brushing 10 times |
| Overload test | No smoke, no peculiar smell, no fire; Characteristic is normal after test | Apply twice rated current for 5 minutes |
| Voltage resistance test | No breakdown; Characteristic is normal after test | DC1000V, Current: 1mA, Time: 1Min |
Recommended Reflow Soldering Curve
The recommended reflow conditions are provided as a guideline. Users should adjust and confirm these conditions based on their specific reflow soldering equipment, process, and environment.
Reminders for Using These Products
- Storage Period: Within 12 months under conditions (Temperature: 5~40C, Humidity: 35~65% RH or less).
- Avoid use and storage in corrosive environments (salt, acid, alkali, etc.).
- Do not touch electrodes directly with bare hands to prevent soldering inhibition.
- Handle products carefully to prevent damage from dropping or improper removal.
- Do not bend terminals excessively 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; temperature difference between solder and chip should 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 ON.
- For non-magnetic shielded types, careful PCB layout is required to prevent malfunctions due to magnetic interference.
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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