SLR1050C-850KEC

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Document 1255-1 

## **– Shielded Power Inductors SLR1050** 

- Tight DCR tolerance for inductor-DCR-based current sensing circuits 

- Three versions for optimal efficiency and accuracy 

- Excellent current handling 

- 10.2 × 7.0 × 4.95 mm surface mount package 

• Designed for use in multi-phase VRM/VRD/EVRD regulators **Designer’s Kit C467** contains 3 each of select values. **Core material** Ferrite 

**Weight** 1.2 – 1.4 g 

**Environmental** RoHS compliant, halogen free **Terminations** RoHS compliant matte tin over nickel over copper. **Ambient temperature** –40°C to +85°C with 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 **PCB washing** Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787_PCB_Washing.pdf. 

## **Typical Temperature Rise (from 25°C)(from 25°C)** 

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0.276<br>max<br>7,0 Typical Temperature Rise (from 25°C)(from 25°C)<br>50<br>Version and Version C<br>dash number 45 Version B<br>0.402<br>10,2 | max cs 40 SAPP PA<br>_ E Internal code titti TT tt tty vi<br>35<br>| PTL ET EET TELL IAAL<br>30 Version A<br>= 25 SRE YG |<br>SEEREEEREEY<br>| 0.1954,95 max 20 AD<br>a fee 0.099 ±0.008 Recommended 15 PTL ETL ELL Vz<br>+| 2,5 ±0,2 Land Pattern 10 Pill TT |va<br>| - -—— SEREERD7C4EREEee<br>5<br>oA —_— tlle tt tit<br>0<br>0.256 0.329 0.079 0 10 20 30 40 50 60 70 80<br>6,5 8,35 2,0<br>Current (A)<br>ii eee tet BS? eee<br>0.122<br>0.060 ±0.008<br>a — 3,1 1 F F<br>1,52 ±0,2<br>Dimensions are in [inches ]<br>mm<br>X Temperature rise (°C)<br>XXXX<br>**----- End of picture text -----**<br>


**Packaging** 250/7″ reel; 1000/13″ reel; Plastic tape: 24 mm wide, 0.4 mm thick, 12 mm pocket spacing, 5.03 mm pocket depth 

Document 1255-1 Revised 06/01/16 

**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. 2017 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 1255-2 

## **SLR1050 Shielded Power Inductors** 

||**Inductance**2<br> **DCR**3<br>**SRF typ**<br> **Part number**1<br>**±10%(nH)**<br>**(mOhms)**<br>**(MHz)**|**Isat(A)**4<br>**at 25°C at 100°C at 125°C**|**Irms(A)**5<br>**20°C rise 40°C rise**|
|---|---|---|---|
||~~**Lowest DCR**~~<br>SLR1050A-850KE_<br>85<br>0.39 ±7.7%<br>210<br>SLR1050A-101KE_<br>100<br>0.39 ±7.7%<br>200<br>SLR1050A-121KE_<br>120<br>0.39 ±7.7%<br>180<br>SLR1050A-151KE_<br>150<br>0.39 ±7.7%<br>90<br>SLR1050A-221KE_<br>220<br>0.39 ±7.7%<br>65|86<br>68.0<br>60.5<br>78<br>61.5<br>55.0<br>65<br>51.0<br>48.0<br>51<br>38.0<br>36.0<br>35<br>25.5<br>23.5|56.7<br>77.1<br>56.7<br>77.1<br>56.7<br>77.1<br>56.7<br>77.1<br>56.7<br>77.1|
||~~**Balanced DCR/tolerance**~~<br>SLR1050B-850KE_<br>85<br>0.47 ±6.7%<br>210<br>SLR1050B-101KE_<br>100<br>0.47 ±6.7%<br>200<br>SLR1050B-121KE_<br>120<br>0.47 ±6.7%<br>180<br>SLR1050B-151KE_<br>150<br>0.47 ±6.7%<br>90<br>SLR1050B-221KE_<br>220<br>0.47 ±6.7%<br>65|86<br>68.0<br>60.5<br>78<br>61.5<br>55.0<br>65<br>51.0<br>48.0<br>51<br>38.0<br>36.0<br>35<br>25.5<br>23.5|48.8<br>67.2<br>48.8<br>67.2<br>48.8<br>67.2<br>48.8<br>67.2<br>48.8<br>67.2|
||~~**Tightest DCR tolerance**~~<br>SLR1050C-850KE_<br>85<br>0.55 ±5.4%<br>210<br>SLR1050C-101KE_<br>100<br>0.55 ±5.4%<br>200<br>SLR1050C-121KE_<br>120<br>0.55 ±5.4%<br>180<br>SLR1050C-151KE_<br>150<br>0.55 ±5.4%<br>90<br>SLR1050C-221KE_<br>220<br>0.55 ±5.4%<br>65|86<br>68.0<br>60.5<br>78<br>61.5<br>55.0<br>65<br>51.0<br>48.0<br>51<br>38.0<br>36.0<br>35<br>25.5<br>23.5|46.7<br>65.0<br>46.7<br>65.0<br>46.7<br>65.0<br>46.7<br>65.0<br>46.7<br>65.0|



1. When ordering, please specify **version** and **packaging** codes: 

**SLR1050C -221KEC** 

**Version A** = Lowest DCR; **B** = Balanced DCR / DCR tol; **C** = Tightest DCR tolerance 

- **Packaging: C** = 7″ machine-ready reel. EIA-481 embossed plastic tape (250 parts per full reel). 

   - **B** = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter C instead. 

## **Irms Testing** 

I rms testing was performed on 0.75 inch wide × 0.25 inch thick copper traces in still air. 

Temperature rise is highly dependent on many factors including pcb land pattern, trace size, and proximity to other components. Therefore temperature rise should be verified in application conditions. 

   - **D** = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (1000 parts per full reel). 

2. Inductance at 100 kHz, 0.1 Vrms, 0 Adc. 

3. DCR is measured on a micro-ohmmeter at points indicated in the diagram 

4. DC current at 25°C that causes an inductance drop of 20% (typ) from its value without current. Click for temperature derating information. 

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. 

6. Electrical specifications at 25°C. 

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

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Document 1255-2 Revised 06/01/16 

**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. 2017 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 1255-3 

## **SLR1050 Shielded Power Inductors** 

## **L vs Current** 

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1000<br>SLR1050A<br>220 nH<br>150 nH<br>120 nH<br>100 100 nH<br>85 nH<br>10<br>1 10 100 1000<br>Inductance (nH)<br>**----- End of picture text -----**<br>


**Current (A)** 

## **L vs Frequency** 

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1000<br>SLR1050A<br>100<br>220 nH<br>150 nH<br>120 nH<br>100 nH<br>85 nH<br>10<br>0.1 1 10 100<br>Inductance (nH)<br>**----- End of picture text -----**<br>


**Frequency (MHz)** 

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1000<br>SLR1050B<br>220 nH<br>150 nH<br>120 nH<br>100 100 nH<br>85 nH<br>10<br>1 10 100 1000<br>Current (A)<br>Inductance (nH)<br>**----- End of picture text -----**<br>


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1000<br>SLR1050B<br>100<br>220 nH<br>150 nH<br>120 nH<br>100 nH<br>85 nH<br>10<br>0.1 1 10 100<br>Frequency (MHz)<br>Inductance (nH)<br>**----- End of picture text -----**<br>


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1000<br>SLR1050C<br>220 nH<br>150 nH<br>120 nH<br>100 100 nH<br>85 nH<br>10<br>1 10 100 1000<br>Current (A)<br>Inductance (nH)<br>**----- End of picture text -----**<br>


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1000<br>SLR1050C<br>100<br>220 nH<br>150 nH<br>120 nH<br>100 nH<br>85 nH<br>10<br>0.1 1 10 100<br>Frequency (MHz)<br>Inductance (nH)<br>**----- End of picture text -----**<br>


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**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 

Document 1255-3 Revised 06/01/16 

© Coilcraft Inc. 2017 

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.