# Power Inductor (SMD), 3.3 µH, 2.2 A, Semishielded, 2.3 A, SRN4018 Series

![Product image](https://novapart.co/image/farnell:2329225RL/)

**URL**: https://novapart.co/products/SRN4018-3R3M/power-inductor-smd-33-h-22-a-semishielded-23
**SKU**: SRN4018-3R3M
**Manufacturer**: BOURNS
**Category**: Passive Components || Inductors || Power Inductors || SMD Power Inductors
**Price**: €0.1460
**Stock**: 1000+
**Lead Time**: 106 days (indicative)

## Description

Inductance:3.3µH; RMS Current (Irms):2.2A; Inductor Construction:Semishielded; Saturation Current (Isat):2.3A; Product Range:SRN4018 Series; Power Inductor Case:4mm x 4mm x 1.8mm; DC Resi

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Inductance | 3.3µH |
| Product Range | SRN4018 Series |
| Product Width | 4mm |
| Product Height | 1.8mm |
| Product Length | 4mm |
| Dc Resistance Max | 0.066ohm |
| Rms Current (Irms) | 2.2A |
| Inductance Tolerance | ± 20% |
| Inductor Construction | Semishielded |
| Inductor Case / Package | - |
| Saturation Current (Isat) | 2.3A |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2329225RL/)

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4R7<br>*RoHS COMPLIANT<br>**----- End of picture text -----**<br>


## **Features** 

n Semi-shielded construction n Miniature size 

- n Low profile - 1.8 mm max. n Inductance range: 0.82 to 220 µH n High rated current - up to 4.0 A n RoHS compliant* and halogen free** 

## **Applications** 

n DC/DC converters n Notebook computers n Digital video cameras n HDDs n Cell phones 

n Televisions, LCD displays 

## **SRN4018 Series - Semi-shielded Power Inductors** 

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

|**Bourns Part No.**<br>~~jp~~|**Inductance**<br>**@ 100 KHz/1 V**<br>~~tt~~|**Inductance**<br>**@ 100 KHz/1 V**<br>~~tt~~|**Q**<br>**(Ref.)**<br>~~tt~~|**Test**<br>**Freq.**<br>**(MHz)**<br>~~tt~~|**Test**<br>**Freq.**<br>**(MHz)**<br>~~tt~~|**SRF**<br>**(MHz)**<br>**Typ.**<br>~~tt~~|**SRF**<br>**(MHz)**<br>**Typ.**<br>~~tt~~|**SRF**<br>**(MHz)**<br>**Typ.**<br>~~tt~~|**SRF**<br>**(MHz)**<br>**Typ.**<br>~~tt~~|**DCR**<br>**(**W**)**<br>**Max.**<br>~~tt~~|**Irms**<br>**(A)**<br>~~tt~~|**Irms**<br>**(A)**<br>~~tt~~|**Irms**<br>**(A)**<br>~~tt~~|**Irms**<br>**(A)**<br>~~tt~~|**Isat**<br>**(A)**<br>~~tt~~|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||**L(**m**H)**<br>~~tt~~|**Tol. %**<br>~~tt~~||||||||||||||
|||||||||||**Max.**<br>~~tt~~||||||
|SRN4018-R82Y<br>~~jp~~|0.82<br>~~tt~~|30<br>~~tt~~|9<br>~~tt~~|7.96<br>~~tt~~||100<br>~~tt~~||||0.019<br>~~tt~~|4.0<br>~~tt~~||||4.7<br>~~tt~~|
|SRN4018-1R0Y<br>~~jp~~<br>~~ee~~|1.0<br>~~tt~~<br>~~ee~~|30<br>~~tt~~<br>~~ee~~|9<br>~~tt~~<br>~~ee~~|7.96<br>~~tt~~<br>~~ee~~|~~tt~~<br>~~ee~~|90<br>~~tt~~<br>~~ee~~||||0.023<br>~~tt~~<br>~~ee~~|3.7<br>~~tt~~<br>~~ee~~||3.7<br>~~tt~~<br>~~ee~~||4.2<br>~~tt~~<br>~~ee~~|
|SRN4018-1R2Y<br>~~jp~~<br>~~ee~~|1.2<br>~~tt~~<br>~~ee~~|30<br>~~tt~~<br>~~ee~~|9<br>~~tt~~<br>~~ee~~|7.96<br>~~tt~~<br>~~ee~~|~~tt~~<br>~~ee~~|80<br>~~tt~~<br>~~ee~~||||0.025<br>~~tt~~<br>~~ee~~|3.5<br>~~tt~~<br>~~ee~~||3.5<br>~~tt~~<br>~~ee~~||4.0<br>~~tt~~<br>~~ee~~|
|SRN4018-1R5Y<br>~~ee~~|1.5<br>~~ee~~|30<br>~~ee~~|9<br>~~ee~~|7.96<br>~~ee~~|~~ee~~|70<br>~~ee~~||||0.032<br>~~ee~~|3.1<br>~~ee~~||3.1<br>~~ee~~||3.5<br>~~ee~~|
|SRN4018-2R2M<br>~~ee~~|2.2<br>~~ee~~|20<br>~~ee~~|9<br>~~ee~~|7.96<br>~~ee~~|~~ee~~|60<br>~~ee~~||||0.044<br>~~ee~~|2.9<br>~~ee~~||2.9<br>~~ee~~||3.0<br>~~ee~~|
|SRN4018-2R7M<br>~~eo~~|2.7<br>~~eo~~|20<br>~~eo~~|9<br>~~eo~~|7.96<br>~~eo~~||52<br>~~eo~~||||0.052<br>~~eo~~|2.3<br>~~eo~~||||2.4<br>~~eo~~|
|||||||||||0.052<br>~~eo~~||||||
|SRN4018-3R3M<br>~~eo~~|3.3<br>~~eo~~|20<br>~~eo~~|9<br>~~eo~~|7.96<br>~~eo~~||45<br>~~eo~~||||0.066<br>~~eo~~|2.2<br>~~eo~~||||2.3<br>~~eo~~|
|||||||||45<br>~~eo~~||0.066<br>~~eo~~||||||
|SRN4018-4R7M<br>~~eo~~<br>~~ae~~|4.7<br>~~eo~~<br>~~ae~~|20<br>~~eo~~<br>~~ae~~|9<br>~~eo~~<br>~~ae~~|7.96<br>~~eo~~<br>~~ae~~|~~eo~~<br>~~ae~~|35<br>~~eo~~<br>~~ae~~||35<br>~~eo~~<br>~~ae~~||0.084<br>~~eo~~<br>~~ae~~|1.9<br>~~eo~~<br>~~ae~~||1.9<br>~~eo~~<br>~~ae~~||2.0<br>~~eo~~<br>~~ae~~|
|SRN4018-6R8M<br>~~ae~~|6.8<br>~~ae~~|20<br>~~ae~~|9<br>~~ae~~|7.96<br>~~ae~~|~~ae~~|30<br>~~ae~~||30<br>~~ae~~||0.118<br>~~ae~~|1.5<br>~~ae~~||1.5<br>~~ae~~||1.6<br>~~ae~~|
|SRN4018-100M<br>~~ae~~<br>~~i~~|10<br>~~ae~~<br>~~a~~|20<br>~~ae~~|11<br>~~ae~~|2.52<br>~~ae~~|~~ae~~|25<br>~~ae~~||25<br>~~ae~~||0.180<br>~~ae~~|1.3<br>~~ae~~||1.3<br>~~ae~~||1.4<br>~~ae~~|
|SRN4018-150M<br>~~ae~~|15<br>~~ae~~|20<br>~~ae~~|11<br>~~ae~~|2.52<br>~~ae~~|~~ae~~|18<br>~~ae~~||18<br>~~ae~~||0.264<br>~~ae~~|1.0<br>~~ae~~||1.0<br>~~ae~~||1.1<br>~~ae~~|
|SRN4018-220M<br>~~ae~~|22<br>~~ae~~|20<br>~~ae~~|11<br>~~ae~~|2.52<br>~~ae~~||15<br>~~ae~~||15<br>~~ae~~||0.348<br>~~ae~~|0.9<br>~~ae~~||||0.95<br>~~ae~~|
|SRN4018-330M<br>~~ae~~<br>~~=~~|33<br>~~ae~~<br>~~=~~|20<br>~~ae~~<br>~~=~~|11<br>~~ae~~<br>~~=~~|2.52<br>~~ae~~<br>~~=~~||12<br>~~ae~~<br>~~=~~||12<br>~~ae~~<br>~~=~~||0.552<br>~~ae~~<br>~~=~~|0.7<br>~~ae~~<br>~~=~~||||0.75<br>~~ae~~<br>~~=~~|
|||||||||||0.552<br>~~=~~||||||
|SRN4018-470M<br>~~=~~|47<br>~~=~~|20<br>~~=~~|11<br>~~=~~|2.52<br>~~=~~||10<br>~~=~~|||~~=~~|0.780<br>~~=~~|~~=~~|0.6<br>~~=~~|0.6<br>~~=~~||0.62<br>~~=~~|
|SRN4018-680M<br>~~=~~|68<br>~~=~~|20<br>~~=~~|11<br>~~=~~|2.52<br>~~=~~||~~=~~|8<br>~~=~~||~~=~~|1.128<br>~~=~~|~~=~~|0.5<br>~~=~~|0.5<br>~~=~~||0.50<br>~~=~~|
|SRN4018-101M<br>~~eo~~|100<br>~~eo~~|20<br>~~eo~~|23<br>~~eo~~|0.796<br>~~eo~~||~~eo~~|6<br>~~eo~~||~~eo~~|1.596<br>~~eo~~|~~eo~~|0.42<br>~~eo~~|0.42<br>~~eo~~||0.45<br>~~eo~~|
|SRN4018-151M<br>~~eo~~|150<br>~~eo~~|20<br>~~eo~~|23<br>~~eo~~|0.796<br>~~eo~~|~~eo~~|~~eo~~|5<br>~~eo~~||~~eo~~|2.400<br>~~eo~~|~~eo~~|0.32<br>~~eo~~|0.32<br>~~eo~~|~~eo~~|0.35<br>~~eo~~|
|SRN4018-221M<br>~~eo~~<br>~~SSE~~|220<br>~~eo~~<br>~~SSE~~|20<br>~~eo~~<br>~~SSE~~|30<br>~~eo~~<br>~~SSE~~|0.796<br>~~eo~~<br>~~SSE~~||3<br>~~eo~~<br>~~SSE~~||||3.552<br>~~eo~~<br>~~SSE~~|0.28<br>~~eo~~<br>~~SSE~~||||0.30<br>~~eo~~<br>~~SSE~~|
|SRN4018-331M<br>~~SSE~~|330<br>~~SSE~~|20<br>~~SSE~~|30<br>~~SSE~~|0.796<br>~~SSE~~||6<br>~~SSE~~||||6.36<br>~~SSE~~|0.2<br>~~SSE~~||||0.21<br>~~SSE~~|
|~~**Recommended Layout**~~<br>~~**Electrical Schematic**~~<br>3.6<br>(.142)<br>4.55<br>(.179)<br>1.5<br>(.059)<br>1.5<br>(.059)<br>~~SSE~~<br>~~—_{|~~<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)................. N/A 

## ~~**Materials**~~ 

Core ..............................................Ferrite Wire ............................Enameled copper Terminal Finish ........................Sn/Ag/Cu Coating .................Magnetic epoxy resin Packaging ..... 3000 pcs. per 13-inch reel 

## ~~**How to Order**~~ 

**SRN4018  -  100M** 

Model Value Code (see table) 

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Electrical Schematic Recommended Layout<br>4.55<br>(.179)<br>3.6<br>(.142)<br>1.5 1.5<br>(.059) —_{| —— (.059)<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. 

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

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4.0 ± 0.2<br>(.157 ± .008)<br>4R7 (.157 ± .008)4.0 ± 0.2<br>1.88<br>MM (.074)<br>DIMENSIONS:<br>(INCHES) MAX.<br>**----- End of picture text -----**<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. Users should verify actual device performance in their specific applications. 

## **SRF0504 Series - Line FilterN4018 Series - Semi-shielded Power Inductors** 

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Soldering Profle<br>**----- End of picture text -----**<br>


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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: 260 °C<br>250<br>|<br>217 °C<br>200 60~150 Sec.<br>60 Sec.<br>Max.<br>150<br>60~120 Sec. Reflow<br>100 F 0<br>Peak Temp.<br>Max. Peak Temp. -5<br>50 30 sec. max.<br>Max. Time Above 217  :<br>60~150 sec. max.<br>0 50 100 150 200 250<br>Time (Seconds)<br>cations<br>ee 330 2.0 ± 0.5 17.2<br>(12.992)  [DIA.] (.079 ± .020) aL (.677)<br>13.5 ± 0.5<br>21.0 ± 0.8<br>(.827 ± .031) (.531 ± .020)DIA.<br>a h 99.5 a<br>Ro, +E} (3.917) SDN X<br>13.5 ± 0.5<br>— Q\<br>(.531 ± .020) [DIA.]<br>12.6<br>(.496)<br>4.0<br>0.3 2.0 ± 0.05 (.157) 1.5 +0.1/-0.0 DIA. (.069)1.75<br>(.012) (.079 ± .002) (.059 +.004/-.000)<br>+— jf [—<br>5.5<br>(.217)<br>4.35<br>© Ole SOO OOO O — a<br>(.171) 12.0<br>E e le llel (.472)<br>1.9<br>fe— (.075) I} (.177) SEN 4.5 i d (.315)8.0 | (.059)1.5 DIA. 1<br>USER DIRECTION OF FEED MM<br>DIMENSIONS:<br>(INCHES)<br>QTY: 3000 PCS. PER REEL<br>Temperature (°C)<br>**----- End of picture text -----**<br>


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Packaging Specifcations<br>**----- End of picture text -----**<br>


REV. 09/17 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. 



## Links

- [View this product on Novapart](https://novapart.co/products/SRN4018-3R3M/power-inductor-smd-33-h-22-a-semishielded-23)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/bourns/srn4018-3r3m/inductor-3-3uh-20-2-2a-smd/dp/2329225RL)
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