# Power Inductor (SMD), 3.3 µH, 3.3 A, Semishielded, 3.8 A, SRN5040 Series

![Product image](https://novapart.co/image/farnell:2428230RL/)

**URL**: https://novapart.co/products/SRN5040-3R3M/power-inductor-smd-33-h-a-semishielded-38-srn5040
**SKU**: SRN5040-3R3M
**Manufacturer**: BOURNS
**Category**: Passive Components || Inductors || Power Inductors || SMD Power Inductors
**Price**: €0.1640
**Stock**: 1000+
**Lead Time**: 120 days (indicative)

## Description

Inductance:3.3µH; RMS Current (Irms):3.3A; Inductor Construction:Semishielded; Saturation Current (Isat):3.8A; Product Range:SRN5040 Series; Power Inductor Case:5mm x 5mm x 4mm; DC

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Inductance | 3.3µH |
| Product Range | SRN5040 Series |
| Product Width | 5mm |
| Product Height | 4mm |
| Product Length | 5mm |
| Dc Resistance Max | 0.027ohm |
| Rms Current (Irms) | 3.3A |
| Inductance Tolerance | ± 20% |
| Inductor Construction | Semishielded |
| Inductor Case / Package | - |
| Saturation Current (Isat) | 3.8A |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2428230RL/)

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2R2<br>*RoHS COMPLIANT<br>**----- End of picture text -----**<br>


## **Features** 

n Semi-shielded construction n Inductance range: 1.5 to 47 µH n Rated current up to 3.6 A n RoHS compliant* and halogen free** 

## **Applications** 

n DC/DC converters n Notebook computers n Digital video cameras n HDDs n Cellphones n Televisions, LCD displays 

## **SRN5040 Series - Semi-shielded Power Inductors** BOURNS: ~~[i~~ 

## ~~**Electrical Specifcations @ 25 °C**~~ 

|**Bourns Part No.**<br>~~es~~|**Inductance**<br>**@ 100 KHz / 1 V**|**Inductance**<br>**@ 100 KHz / 1 V**|**Q**<br>**(Ref.)**<br>~~ss~~|**Test**<br>**Freq.**<br>**(MHz)**<br>~~ss~~|**SRF**<br>**(MHz)**<br>**Typ.**<br>~~nD~~|**SRF**<br>**(MHz)**<br>**Typ.**<br>~~nD~~|**DCR**<br>**(**W**)**<br>**Max.**|**Irms**<br>**(A)**|**Irms**<br>**(A)**|**Isat**<br>**(A)**|**Isat**<br>**(A)**|
|---|---|---|---|---|---|---|---|---|---|---|---|
||**L(**m**H)**<br>~~es~~|**Tol. %**<br>~~es~~||||||||||
|SRN5040-1R5Y<br>~~es~~<br>~~es~~|1.5<br>~~es~~<br>~~ns~~|30<br>~~es~~<br>~~GO~~|15<br>~~ss~~<br>~~GO~~|7.96<br>~~ss~~<br>~~GO~~|66<br>~~nD~~<br>~~GO~~|~~nD~~|~~0.018~~|3.6|3.6<br>~~GO~~|6.0<br>~~GO~~||
|||||||~~nD~~<br>~~GO~~|~~0.018~~<br>~~GO~~|3.6<br>~~GO~~||||
|SRN5040-2R2Y<br>~~es ~~<br>~~es~~<br>~~es~~|2.2<br> ~~es~~<br>~~ns~~<br>~~es~~|30<br>~~es ~~<br>~~GO~~<br>~~es~~|20<br> ~~ss~~<br>~~GO~~<br>~~ss~~|7.96<br>~~ss~~<br>~~GO~~<br>~~ss~~|40<br>~~nD~~<br>~~GO~~<br>~~GO~~|~~nD~~<br>~~GO~~<br>~~GO~~|0.021<br>~~GO~~<br>~~GO~~|3.5<br>~~GO~~|3.5<br>~~GO~~|4.6<br>~~GO~~||
|SRN5040-3R3M<br>~~es ~~<br>~~es~~<br>~~es~~|3.3<br> ~~ns~~<br>~~es~~<br>~~es~~|20<br>~~GO~~<br>~~es~~<br>~~GO~~|20<br>~~GO~~<br>~~ss~~<br>~~GO~~|7.96<br>~~GO~~<br>~~ss~~<br>~~GO~~|30<br>~~GO~~<br>~~GO~~<br>~~GO~~||0.027<br>~~GO~~<br>~~GO~~<br>~~GO~~|3.3<br>~~GO~~<br>~~GO~~||~~GO~~<br>~~GO~~|3.8<br>~~GO~~<br>~~GO~~|
|SRN5040-4R7M<br>~~es ~~<br>~~es~~<br>~~es~~|4.7<br> ~~es~~<br>~~es~~<br>~~es~~|20<br>~~es ~~<br>~~GO~~<br>~~en~~|15<br> ~~ss~~<br>~~GO~~<br>~~ss~~|7.96<br>~~ss~~<br>~~GO~~<br>~~ss~~|27<br>~~GO~~<br>~~GO~~|~~GO~~<br>~~GO~~|0.035<br>~~GO~~<br>~~GO~~|3.1<br>~~GO~~|3.1<br>~~GO~~|~~GO~~|3.3<br>~~GO~~|
|SRN5040-6R8M<br>~~es~~<br>~~es~~<br>~~es es~~|6.8<br>~~es~~<br>~~es~~<br>~~es~~|20<br>~~GO~~<br>~~en~~<br>~~es~~|15<br>~~GO~~<br>~~ss~~<br>~~es~~|7.96<br>~~GO~~<br>~~ss~~<br>~~es~~|21<br>~~GO~~<br>~~ns~~|~~GO~~<br>~~ns~~|0.059<br>~~GO~~|2.3<br>~~GO~~|2.3<br>~~GO~~|2.6<br>~~GO~~||
|SRN5040-8R2M<br>~~es~~<br>~~es es~~<br>~~es~~|8.2<br>~~es~~<br>~~es~~<br>~~es~~|20<br>~~en ~~<br>~~es~~<br>~~en~~|15<br> ~~ss~~<br>~~es~~<br>~~ss~~|7.96<br>~~ss~~<br>~~es~~<br>~~ss~~|18<br>~~ns~~|~~ns~~|0.065|2.2|2.2|2.4||
|SRN5040-100M<br>~~es es~~<br>~~es~~<br>~~es~~|10<br>~~es~~<br>~~es~~<br>~~es~~|20<br>~~es ~~<br>~~en~~<br>~~es~~|17<br> ~~es~~<br>~~ss~~<br>~~es~~|7.96<br>~~es~~<br>~~ss~~<br>~~rs~~|17<br>~~ns~~<br>~~es~~|~~ns~~<br>~~es~~|0.068<br>~~I~~|2.1<br>~~I~~|2.1<br>~~I~~||2.3|
|SRN5040-150M<br>~~es ~~<br>~~es~~<br>~~es~~|15<br> ~~es~~<br>~~es~~<br>~~es~~|20<br>~~en ~~<br>~~es~~<br>~~GO~~|17<br> ~~ss~~<br>~~es~~<br>~~GO~~|2.52<br>~~ss~~<br>~~rs~~<br>~~GO~~|15<br>~~es~~<br>~~GO~~||0.096<br>~~I~~|1.8<br>~~I~~||||
||||||||0.096<br>~~I~~<br>~~GO~~|1.8<br>~~I~~<br>~~GO~~||||
|SRN5040-220M<br>~~es ~~<br>~~es~~<br>~~rs~~|22<br> ~~es~~<br>~~es~~<br>~~es~~|20<br>~~es~~<br>~~GO~~<br>~~es~~|17<br>~~es~~<br>~~GO~~<br>~~ss~~|2.52<br>~~rs ~~<br>~~GO~~<br>~~ss~~|11<br> ~~es ~~<br>~~GO~~<br>~~DO~~||0.152<br> ~~I~~<br>~~GO~~<br>~~DO~~|1.4<br>~~I~~<br>~~GO~~||1.6<br>~~GO~~||
|SRN5040-270M<br>~~es~~<br>~~rs~~<br>~~es~~|27<br>~~es~~<br>~~es~~<br>~~es~~|20<br>~~GO~~<br>~~es~~|17<br>~~GO~~<br>~~ss~~<br>~~ns~~|2.52<br>~~GO~~<br>~~ss~~|9<br>~~GO~~<br>~~DO~~<br>~~GO~~|~~GO~~<br>~~DO~~<br>~~GO~~|0.198<br>~~GO~~<br>~~DO~~<br>~~GO~~|1.3<br>~~GO~~|1.3<br>~~GO~~|1.4<br>~~GO~~||
|SRN5040-330M<br>~~rs ~~<br>~~es~~<br>~~Rs~~|33<br> ~~es ~~<br>~~es~~<br>~~es~~|20<br> ~~es ~~<br>~~es~~|17<br> ~~ss~~<br>~~ns~~<br>~~ss~~|2.52<br>~~ss ~~<br>~~ss~~|8<br> ~~DO~~<br>~~GO~~<br>~~nD~~|~~DO~~<br>~~GO~~<br>~~nD~~|0.216<br>~~DO~~<br>~~GO~~|1.2|1.2|1.3||
|SRN5040-470M<br>~~es ~~<br>~~Rs~~|47<br> ~~es~~<br>~~es~~|20<br>~~es~~|15<br>~~ns~~<br>~~ss~~|2.52<br>~~ss~~|7<br>~~GO~~<br>~~nD~~|~~GO~~<br>~~nD~~|0.324<br>~~GO~~|0.9|0.9|1.1||
|~~**Electrical Schematic**~~<br>~~**How to Order**~~<br>~~Rs es~~<br>~~es ss~~<br>~~nD~~||||||~~**How to Order**~~<br>~~nD~~|~~**How to Order**~~|||||
||||||||~~**How to Order**~~|||||



## ~~**Electrical Schematic**~~ 

~~**How to Order**~~ Model Value Code (see table) 

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SRN5040  -  4R7M<br>**----- End of picture text -----**<br>


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Recommended Layout<br>5.1<br>(.200)<br>KYW KXYXAMI<br>Ry RY<br>AQ XN<br>NY RN<br>NyNaas OXi 4.0<br>Naotnt NyIN (.157)<br>Waco eas<br>WenRy nR y |<br>1.5 1.5<br>(.059) (.059)<br>MM<br>DIMENSIONS:<br>(INCHES)<br>**----- End of picture text -----**<br>


## ~~**General Specifcations**~~ 

Operating Temperature ................................. -40 °C to +125 °C (Temperature rise included) Storage Temperature (Component) ................................. -40 °C to +125 °C Resistance to Solder Heat ...............................+260 °C for 10 sec. Temperature Rise .....40 °C at rated Irms Rated Current 

............ Inductance drops 30 % at Isat Moisture Sensitivity Level .....................1 ESD Classification (HBM)...................3B 

## ~~**Materials**~~ 

Core ..............................................Ferrite Wire ............................Enameled copper Terminal Finish ...................................Sn Coating .................Magnetic epoxy resin Packaging ..... 1000 pcs. per 13-inch reel 

## ~~**Product Dimensions**~~ 

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5.0 ± 0.2<br>(.197 ± .008)<br>5.0 ± 0.2<br>(.197 ± .008)<br>[<br>4.0<br>MAX.<br>(.157)<br>L o [4]<br>MM<br>DIMENSIONS:<br>(INCHES)<br>**----- End of picture text -----**<br>


> *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. 

**Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less. Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. 

## **SRF0504 Series - Line Filter3312 - 2 mm SMD Trimming PotentiometerN5040 Series - Semi-shielded wer Induc o s** 

## ~~**Soldering Profle**~~ 

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Temperature Preheat Reflow Forced<br>Rising Area Area Area Cooling Area<br>+4.0 °C/Sec. Max. 150~200 °C / 60~120 Sec. +3.0 °C/Sec. Max. -(1.0~5.0) °C/Sec. Max.<br>Peak Temperature: 250 °C<br>250<br>Peak Temperature<br>217 °C 250   max.<br>200 60~150 Sec.<br>60 Sec. Max. Peak Temp. -5 °C<br>150 Max. 30 sec. max.<br>60~120 Sec. Max. Time Above 217  :<br>100 - F- 60~150 sec. max. :<br>50<br>0 50 100 150 200 250<br>Time (Seconds)<br>cations<br>330 2.0 ± 0.5 17.2<br>(12.99)  [DIA.] (.079 ± .020) (.677)<br>— a — r THICKNESS<br>13.5 ± 0.5<br>21.0 ± 0.8<br>(.827 ± .031) (.531 ± .020)DIA.<br>= Pe EE 99.5 aN se<br>(3.917)<br>13.5 ± 0.5<br>(.531 ± .020) [DIA.]<br>ae 12.6<br>(.496)<br>1.5 +0.1/-0.0 DIA.<br>(.059 +.004/-.000)<br>1.75<br>0.4 4.0 2.0 ± 0.05 (.069)<br>(.016) (.157) (.079 ± .002)<br>2 os ee A "<br>5.8<br>_ (.228) joodoooee o 6Xyy 5.5<br>(.217)<br>te (.165)4.2 SSN (.211)5.35 | | (.315)8.0 | (.059)1.5 DIA. (.472)12.0<br>USER DIRECTION OF FEED<br>QTY: 1000 PCS. PER REEL DIMENSIONS: MM<br>(INCHES)<br>REV. 06/17<br>Specifications are subject to change without notice.<br>The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.<br>Users should verify actual device performance in their specific applications.<br>Temperature (°C)<br>**----- End of picture text -----**<br>


## ~~**Packaging Specifcations**~~ 



## Links

- [View this product on Novapart](https://novapart.co/products/SRN5040-3R3M/power-inductor-smd-33-h-a-semishielded-38-srn5040)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/bourns/srn5040-3r3m/inductor-3-3uh-20-3-3a-semi-shld/dp/2428230RL)
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