SD43-272MLC

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Document 356-1 

## **– SMT Power Inductors SD43 Series** 

- Rugged, cost-effective power inductors 

- Excellent current handling; low DCR 

- Values greater than 27 µH are 10% tolerance 

## **Core material** Ferrite 

**Terminations** RoHS compliant tin-silver-copper solder over tin over nickel over silver plating. 

**Weight** 0.17 – 0.20 g 

**Ambient temperature** –40°C to +85°C with (40°C rise) I rms current. **Maximum part temperature** +125°C (ambient + temp rise). Derating. **Storage temperature** Component: –40°C to +125°C. Tape and reel packaging: –40°C to +80°C 

**Resistance to soldering heat** Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles 

**Moisture Sensitivity Level (MSL)** 1 (unlimited floor life at <30°C / 85% relative humidity) 

**Failures in Time (FIT) / Mean Time Between Failures (MTBF)** 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 **Packaging** 500/7″ reel; 2000/13″ reel; Plastic tape: 12 mm wide, 0.35 mm thick, 8 mm pocket spacing, 3.4 mm pocket depth **PCB washing** Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf. 

|**Part**|**Inductance**2|**DCR max**|**SRF typ**3||**Isat(A)**4||**Irms**|**rms(A)**5|
|---|---|---|---|---|---|---|---|---|
|**number**1|**(µH)**|**(mOhm)**|**(MHz)**|**10% drop**|**20% drop**|**30% drop**|**20°C rise 40°C rise**|**20°C rise 40°C rise**|
|SD43-102ML_|1.0 ±20%|33|100|5.5|6.1|6.5|3.4|5.8|
|SD43-142ML_|1.4 ±20%|38|90|4.8|5.5|5.9|3.1|5.8|
|SD43-182ML_|1.8 ±20%|42|80|4.1|4.6|5.1|2.7|4.6|
|SD43-222ML_|2.2 ±20%|47|65|3.6|4.1|4.4|2.3|3.8|
|SD43-272ML_|2.7 ±20%|52|60|3.4|3.8|4.1|2.2|3.7|
|SD43-332ML_|3.3 ±20%|58|50|2.9|3.3|3.5|2.1|3.3|
|SD43-392ML_|3.9 ±20%|76|47|2.6|3.0|3.2|1.9|3.0|
|SD43-472ML_|4.7 ±20%|94|45|2.4|2.8|3.0|1.9|2.9|
|SD43-562ML_|5.6 ±20%|101|40|2.2|2.5|2.7|1.6|2.8|
|SD43-682ML_|6.8 ±20%|110|35|2.0|2.3|2.5|1.5|2.5|
|SD43-822ML_|8.2 ±20%|132|30|1.83|2.1|2.2|1.4|2.2|
|SD43-103ML_|10.0 ±20%|182|28|1.70|1.95|2.1|1.3|2.2|
|SD43-123ML_|12.0 ±20%|210|24|1.53|1.75|1.90|1.1|1.8|
|SD43-153ML_|15.0 ±20%|235|22|1.33|1.58|1.73|1.0|1.7|
|SD43-183ML_|18.0 ±20%|338|19|1.25|1.43|1.58|0.89|1.5|
|SD43-223ML_|22.0 ±20%|378|17|1.15|1.32|1.43|0.85|1.4|
|SD43-273ML_|27.0 ±20%|522|16|1.00|1.14|1.26|0.73|1.1|
|SD43-333KL_|33.0 ±10%|540|14|0.90|1.05|1.14|0.62|0.90|
|SD43-393KL_|39.0 ±10%|587|13|0.84|0.97|1.07|0.61|0.90|
|SD43-473KL_|47.0 ±10%|844|12|0.77|0.87|0.93|0.53|0.86|
|SD43-563KL_|56.0 ±10%|937|11|0.72|0.80|0.86|0.51|0.70|
|SD43-683KL_|68.0 ±10%|1117|10|0.65|0.72|0.77|0.43|0.60|



   2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/ HP 4284A impedance analyzer. 

1. When ordering, please specify **packaging** code: | 

**SD43-683KLC** 

   3. SRF measured using Agilent/HP 8753D network analyzer and Coilcraft SMD -D test fixture. 

- **Packaging: C** = 7″ machine-ready reel. EIA-481 embossed plastic tape (500 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge). 

   - 4 DC current at which the inductance drops the specified amount from its value without current. 

   5. Current that causes the specified temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Click for temperature derating information. 

- **B** = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C. 

6. Electrical specifications at 25°C. 

Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 

- **D** = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (2000 parts per full reel). 

## Document 356-1 Revised 11/16/20 

**US** +1-847-639-6400   sales@coilcraft.com **UK** +44-1236-730595   sales@coilcraft-europe.com **Taiwan** +886-2-2264 3646   sales@coilcraft.com.tw **China** +86-21-6218 8074   sales@coilcraft.com.cn **Singapore** + 65-6484 8412   sales@coilcraft.com.sg 

© Coilcraft Inc. 2020 

This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. 

Document 356-2 

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## **SMT Power Inductors – SD43 Series** 

## **Typical L vs Current** 

## **Typical L vs Frequency** 

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1000<br>100 68 µH<br>27 µH<br>10 8.2 µH<br>3.3 µH<br>1.0 µH<br>1<br>0.1<br>0.01 0.1 1 10<br>Current (A)<br>0.185<br>max<br>4,70<br>0.165<br>max<br>4,20<br>XXX<br>Inductance (µH)<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
1000<br>100 68 µH<br>27 µH<br>10 8.2 µH<br>3.3 µH<br>1.0 µH<br>1<br>0.1<br>0.01 0.1 1 10<br>Frequency (MHz)<br>Inductance (µH)<br>**----- End of picture text -----**<br>


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0.136<br>max<br>3,45<br>Recommended<br>Land Pattern<br>0.063 0.061<br>1,60 1,55<br>0.165 0.169<br>4,20 4,30<br>0.051 0.129<br>1,30 3,28<br>Dimensions are in [inches ]<br>mm<br>**----- End of picture text -----**<br>


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Document 356-2 Revised 11/16/20 

© Coilcraft Inc. 2020 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. 

**US** +1-847-639-6400   sales@coilcraft.com **UK** +44-1236-730595   sales@coilcraft-europe.com **Taiwan** +886-2-2264 3646   sales@coilcraft.com.tw **China** +86-21-6218 8074   sales@coilcraft.com.cn **Singapore** + 65-6484 8412   sales@coilcraft.com.sg