Beijing Silk Road Enterprise Management Services Co., Ltd.
| Current - Saturation (Isat) | 740mA |
| Description | 740mA SMD,4x4mm Fixed Inductors RoHS |
| Mfr. Part # | SNR4020-470MT |
| Package | SMD,4x4mm |
| Model Number | SNR4020-470MT |
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Product Specification
| Current - Saturation (Isat) | 740mA | Description | 740mA SMD,4x4mm Fixed Inductors RoHS |
| Mfr. Part # | SNR4020-470MT | Package | SMD,4x4mm |
| Model Number | SNR4020-470MT |
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 for reduced leakage flux and enhanced EMI resistance, large current capacity with low DCR, 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, graphics cards, automotive systems, and DC-DC converters. They are RoHS, Halogen Free, and REACH compliant.
| Part No. | Inductance (H) | Inductance Tolerance | Test Frequency | Test Voltage | DCR () Typical | DCR () Max | Saturation Current (A) Max | Temperature Rise Current (A) Max | Dimensions (LWH) (mm) |
|---|---|---|---|---|---|---|---|---|---|
| SNR4020-R47M | 0.47 | 20% | 100KHz | 1.0V | 0.022 | 0.029 | 7.00 | 3.30 | 4.04.02.0 |
| SNR4020-1R0M | 1.0 | 20% | 100KHz | 1.0V | 0.029 | 0.038 | 4.78 | 2.15 | 4.04.02.0 |
| SNR4020-1R5M | 1.5 | 20% | 100KHz | 1.0V | 0.035 | 0.045 | 4.45 | 2.15 | 4.04.02.0 |
| SNR4020-2R2M | 2.2 | 20% | 100KHz | 1.0V | 0.035 | 0.046 | 3.40 | 1.85 | 4.04.02.0 |
| SNR4020-3R3M | 3.3 | 20% | 100KHz | 1.0V | 0.070 | 0.091 | 3.20 | 1.40 | 4.04.02.0 |
| SNR4020-4R7M | 4.7 | 20% | 100KHz | 1.0V | 0.075 | 0.098 | 2.35 | 1.34 | 4.04.02.0 |
| SNR4020-6R8M | 6.8 | 20% | 100KHz | 1.0V | 0.125 | 0.163 | 2.20 | 1.04 | 4.04.02.0 |
| SNR4020-8R2M | 8.2 | 20% | 100KHz | 1.0V | 0.148 | 0.185 | 1.75 | 1.00 | 4.04.02.0 |
| SNR4020-100M | 10 | 20% | 100KHz | 1.0V | 0.165 | 0.215 | 1.60 | 0.90 | 4.04.02.0 |
| SNR4020-150M | 15 | 20% | 100KHz | 1.0V | 0.230 | 0.300 | 1.35 | 0.77 | 4.04.02.0 |
| SNR4020-220M | 22 | 20% | 100KHz | 1.0V | 0.350 | 0.455 | 1.05 | 0.62 | 4.04.02.0 |
| SNR4020-330M | 33 | 20% | 100KHz | 1.0V | 0.550 | 0.710 | 0.85 | 0.49 | 4.04.02.0 |
| SNR4020-470M | 47 | 20% | 100KHz | 1.0V | 0.710 | 0.920 | 0.74 | 0.44 | 4.04.02.0 |
| SNR4020-680M | 68 | 20% | 100KHz | 1.0V | 1.060 | 1.380 | 0.60 | 0.36 | 4.04.02.0 |
| Inductance Tolerance Options: J:5%, K: 10%, L: 15%, M: 20%, P: 25%, N: 30% | |||||||||
| Packing Options: B: Bulk Package, T: Tape & Reel | |||||||||
Operating Temperature: -40 to +125 (Including coils self-temperature rise)
Example: SNR 4020 470 M T
| Item | A | B | C | D | E | F (Typ) | G (Typ) | H (Typ) |
|---|---|---|---|---|---|---|---|---|
| SNR4020 | 4.0 0.3 | 4.0 0.3 | 2.0 Max | 2.1 0.2 | 3.3 0.2 | 1.1 | 1.9 | 3.7 |
| (Dimensions are in mm) | ||||||||
Tape and Reel Dimensions:
| Part No. | Tape Dimension W (mm) | Tape Dimension P (mm) | Tape Dimension W1 (mm) | Reel Dimensions A (mm) | Reel Dimensions B (mm) | Reel Dimensions C (mm) | Reel Dimensions D (mm) | Reel Quantity (PCS) | Inside Box Quantity (PCS) | Outside Carton Quantity (PCS) |
|---|---|---|---|---|---|---|---|---|---|---|
| SNR4020 | 12 | 8 | 5.5 | 12.4 | 100 | 13 | 330 | 3000 | 12,000 | 48,000 |
Cover tape peel off condition:
| Item | Requirements | Test Methods and Remarks |
|---|---|---|
| Terminal Strength (SMT) | Meet requirements without any loose terminal. | Pulling test based on GB/T 2423.60-2008. Force varies with terminal cross-sectional area (A): A8mm, force5N; 8mm |
| Terminal Strength (DIP) | Meet requirements without any loose terminal. | Pulling test based on GB/T 2423.60-2008. Force varies with terminal diameter (d): 0.35d0.50mm, 5N; 0.50d0.80mm, 10N; 0.80d1.25mm, 20N; D1.25mm, 40N. Duration: 10sec. Pull Force applied gradually and maintained for 10 seconds. |
| Resistance to Flexure | No visible mechanical damage. | Based on JIS C 5311:1997. Flexure: 2mm. Pressurizing Speed: 0.5mm/sec. Keep time: 30 sec. |
| Dropping | No case deformation or change in appearance. No short and no open. | Based on GB/T 2423.7-2018. Packaged products dropped from 1m high 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. No visible mechanical damage. | Based on GB/T 2423.28-2005. Solder temperature: 2402. Duration: 3 sec. Solder: Sn/3.0Ag/0.5Cu. Flux: 25% Resin and 75% ethanol by weight. |
| Vibration | No visible mechanical damage. Inductance change: Within 10%. Q factor change: Within 20%. | Based on GB/T 2423.10-2019. Solder the inductor to a testing jig. Subjected to simple harmonic motion, amplitude 1.5mm, frequency 10-55 Hz and return. Traversed in approximately 1 minute. Applied for 2 hours in each of 3 mutually perpendicular directions (total 6 hours). |
| Thermal Shock | No visible mechanical damage. Inductance change: Within 10% (Mn-Zn: Within 30%). Q factor change: Within 20%. | Based on GB/T 2423.22-2012 Method Na. One cycle: (85~125) for T time, rush to (-55~40) for T time. 100 cycles. Transforming interval: Max. 20 sec. Stabilized at normal condition for 1-2 hours. |
| Low temperature Storage | No visible mechanical damage. Inductance change: Within 10% (Mn-Zn: Within 30%). Q factor change: Within 20%. | Based on GB/T 2423.1-2008 Method Ab. Temperature: -55~-402. Duration: 962 hours. Stabilized at normal condition for 1-2 hours before measuring. |
| High temperature Storage | No visible mechanical damage. Inductance change: Within 10% (Mn-Zn: Within 30%). Q factor change: Within 20%. | Based on GB/T 2423.2-2008 Method Bb. Temperature: 125~852. Duration: 962 hours. Stabilized at normal condition for 1-2 hours before measuring. |
| Damp Heat (Steady States) | No visible mechanical damage. Inductance change: Within 10% (Mn-Zn: Within 30%). Q factor change: Within 20%. | Based on GB/T 2423.3-2016. Temperature: 602. Humidity: 90% to 95% RH. Duration: 962 hours. Stabilized at normal condition for 1-2 hours before measuring. |
| Heat endurance of Reflow soldering | No significant defects in appearance. L/L10% (Mn-Zn: L/L30%). Q/Q30% (SMD series only). DCR/DCR10%. | Based on GJB 360B-2009. Refer to reflow curve, go through reflow twice. Peak temperature: 260+0/-5. |
| Resistance to solvent test | No case deformation or change in appearance or obliteration of marking. | Based on IEC 68-2-45:1993. Dip parts into IPA solvent for 50.5Min, dry at room temp for 5Min, brush 10 times. |
| Overload test | During test: no smoke, no peculiar smell, no fire. Characteristics normal after test. | Based on JIS C5311-6.13. Apply twice the rated current for 5 minutes. Repeat twice. |
| Voltage resistance test | During test: no breakdown. Characteristics normal after test. | Based on MIL-STD-202G Method 301. For parts with two coils: DC1000V, Current: 1mA, Time: 1Min. |
The recommended reflow conditions are set according to the manufacturer's soldering equipment. Users should adjust and confirm according to their specific environment/equipment.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer
Year Established:
2009
Employee Number:
>>300
Ecer Certification：
Verified Supplier
Company Profile Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an... Company Profile Beijing Silk Road Enterprise Management Services Co.,Ltd. is a professional company focus on integrated circuit ic business. Beijing Silk Road will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining an...
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