# Power Inductor (SMD), 3.3 µH, 3.1 A, Shielded, 2.1 A, SRR4818A Series, 1919 [4848 Metric]

![Product image](https://novapart.co/image/farnell:2775393/)

**URL**: https://novapart.co/products/SRR4818A-3R3Y/power-inductor-smd-33-h-31-a-shielded-21-srr4818a
**SKU**: SRR4818A-3R3Y
**Manufacturer**: BOURNS
**Category**: Passive Components || Inductors || Power Inductors || SMD Power Inductors
**Price**: €0.3310
**Stock**: 10+
**Lead Time**: 134 days (indicative)

## Description

Inductance:3.3µH; RMS Current (Irms):3.1A; Inductor Construction:Shielded; Saturation Current (Isat):2.1A; Product Range:SRR4818A Series; Power Inductor Case:4.8mm x 4.8mm x 1.8m

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Inductance | 3.3µH |
| Product Range | SRR4818A Series |
| Product Width | 4.8mm |
| Product Height | 1.8mm |
| Product Length | 4.8mm |
| Dc Resistance Max | 0.055ohm |
| Rms Current (Irms) | 3.1A |
| Power Inductor Case | 4.8mm x 4.8mm x 1.8mm |
| Inductance Tolerance | ± 30% |
| Inductor Construction | Shielded |
| Inductor Case / Package | 1919 [4848 Metric] |
| Saturation Current (Isat) | 2.1A |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2775393/)

## **Features** 

## **Applications** 

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**----- Start of picture text -----**<br>
n  Shielded construction n  Automotive systems:<br>n   Inductance range: 1 to 47 µH -  Driver assistant<br>-  Infotainment<br>n   Heating current up to 5.1 A<br>-  Lighting<br>n   AEC-Q200 qualified n  DC/DC converters<br>n  RoHS compliant* and halogen free** n  Power supplies<br>SRR4818A Series - Shielded Power Inductors<br>BOURNS EAA<br>*RoHS COMPLIANT<br>& AEC APPROVED<br>**----- End of picture text -----**<br>


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

|**Bourns**<br>**Part Number**<br>~~ns~~|**Inductance @**<br>**100 kHz/0.1 V**|**Inductance @**<br>**100 kHz/0.1 V**|**SRF**<br>**(MHz)**<br>**Typ.**<br>~~nD~~|**DCR (m**W**)**|**DCR (m**W**)**|**DCR (m**W**)**|**DCR (m**W**)**|**I rms1**<br>**(A)**<br>**Typ.**<br>~~ID~~|**I rms1**<br>**(A)**<br>**Typ.**<br>~~ID~~|**I rms2**<br>**(A)**<br>**Typ.**<br>~~I~~|**I rms2**<br>**(A)**<br>**Typ.**<br>~~I~~|**I sat**<br>**(A)**<br>**Typ.**|**I sat**<br>**(A)**<br>**Typ.**|**I sat**<br>**(A)**<br>**Typ.**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||**L (µH)**<br>~~ne~~|**Tol. (%)**<br>~~ny~~||**Typ.**<br>~~nD~~||**Max.**<br>~~ID~~|||||||||
|SRR4818A-1R0Y<br>~~ns~~|1.0<br>~~ne~~|±30<br>~~ny~~|140<br>~~nD~~|19.2<br>~~nD~~||25.0<br>~~ID~~||4.00<br>~~ID~~||5.10<br>~~I~~||3.60|||
|SRR4818A-1R5Y<br>~~ns ~~<br>~~OO~~|1.5<br> ~~ne ~~<br>~~OO~~|±30<br> ~~ny~~<br>~~OO~~|105<br>~~nD~~<br>~~OO~~|25.2<br>~~nD ~~<br>~~OO~~||35.0<br> ~~ID ~~<br>~~OO~~||3~~75~~<br> ~~ID ~~<br>~~OO~~||~~4.~~70<br> ~~I~~<br>~~OO~~||3.00<br>~~OO~~|||
|||||||||3.~~75~~<br>~~OO~~|||||||
|SRR4818A-2R2Y<br>~~oo~~|2.2<br>~~EET~~|±30<br>~~EET~~|90<br>~~EET~~|33.7<br>~~EEE~~||45.0<br>~~EEE~~||2.70<br>~~EEE~~||3.50<br>~~EEE~~||2.43<br>~~EEE~~|||
|SRR4818A-3R3Y<br>~~oo~~<br>~~OO~~|3.3<br>~~EET~~<br>~~OO~~|±30<br>~~EET ~~<br>~~OO~~|70<br> ~~EET~~<br>~~OO~~|42.8<br>~~EEE~~<br>~~OO~~||55.0<br>~~EEE~~<br>~~OO~~||2.50<br>~~EEE~~<br>~~OO~~||3.10<br>~~EEE~~<br>~~OO~~||2.1<br>~~EEE~~<br>~~OO~~||2.10<br>~~EEE~~<br>~~OO~~|
|SRR4818A-3R9Y<br>~~OO~~|3.9<br>~~OO~~|±30<br>~~OO~~|65<br>~~OO~~|54.5<br>~~OO~~||70.0<br>~~OO~~||2.20<br>~~OO~~||2.70<br>~~OO~~|0<br>~~OO~~|1.90<br>~~OO~~||90<br>~~OO~~|
|||||||||||2.70<br>~~OO~~|||||
|SRR4818A-4R7Y<br>~~OO~~<br>~~oo~~|4.7<br>~~OO~~<br>~~EET~~|±30<br>~~OO~~<br>~~EET~~|55<br>~~OO~~<br>~~EET~~|59.4<br>~~OO~~<br>~~EEE~~||80.0<br>~~OO~~<br>~~EEE~~||2.00<br>~~OO~~<br>~~EEE~~||2.60<br>~~OO~~<br>~~EEE~~|60<br>~~OO~~<br>~~EEE~~|~~1.50~~<br>~~OO~~<br>~~EEE~~|||
|SRR4818A-5R6Y<br>~~oo~~<br>~~OO~~|5.6<br>~~EET~~<br>~~OO~~|±30<br>~~EET ~~<br>~~OO~~|50<br> ~~EET~~<br>~~OO~~|74.3<br>~~EEE~~<br>~~OO~~||90.0<br>~~EEE~~<br>~~OO~~||1.75<br>~~EEE~~<br>~~OO~~||2.30<br>~~EEE~~<br>~~OO~~|30<br>~~EEE~~<br>~~OO~~|1.35<br>~~EEE~~<br>~~OO~~|||
|SRR4818A-6R8Y<br>~~OO~~|6.8<br>~~OO~~|±30<br>~~OO~~|45<br>~~OO~~|82.1<br>~~OO~~||100.0<br>~~OO~~||1.65<br>~~OO~~||2.20<br>~~OO~~|0<br>~~OO~~|1.2<br>~~OO~~||1.25<br>~~OO~~|
|||||||||1.65<br>~~OO~~||2.20<br>~~OO~~|||||
|SRR4818A-8R2Y<br>~~oo~~|8.2<br>~~EET~~|±30<br>~~EET ~~|43<br> ~~EET~~|97.7<br>~~E~~||130.0<br>~~EEE~~||1.55<br>~~EE~~||1.90<br>~~EE~~||1.1<br>~~EE~~||1.15<br>~~EE~~|
|SRR4818A-100M<br>~~OO~~|10<br>~~OO~~|± 20<br>~~OO~~|40<br>~~OO~~|109.8<br>~~OO~~||140.0<br>~~OO~~||1~~.~~45<br>~~OO~~||~~1~~.80<br>~~OO~~||1.05<br>~~OO~~|||
|SRR4818A-120M<br>~~OO~~|12<br>~~OO~~|± 20<br>~~OO~~|37<br>~~OO~~|132.2<br>~~OO~~||170~~.0~~<br>~~OO~~||~~1.3~~0<br>~~OO~~||1.60<br>~~OO~~||0.95<br>~~OO~~|||
|||||||||~~1.3~~0<br>~~OO~~|||||||
|SRR4818A-150M<br>~~oo~~|15<br>~~EET~~|± 20<br>~~EET~~|30<br>~~EET~~|176.7<br>~~EEE~~||220.0<br>~~EEE~~||1.25<br>~~EEE~~|5<br>~~EEE~~|1.50<br>~~EEE~~||0.87<br>~~EEE~~|||
|SRR4818A-180M<br>~~oo~~<br>~~OO~~|18<br>~~EET~~<br>~~OO~~|± 20<br>~~EET ~~<br>~~OO~~|28<br> ~~EET~~<br>~~OO~~|214.<br>~~EEE~~<br>~~OO~~|214.8<br>~~EEE~~<br>~~OO~~|280.0<br>~~EEE~~<br>~~OO~~||1.10<br>~~EEE~~<br>~~OO~~|0<br>~~EEE~~<br>~~OO~~|1.40<br>~~EEE~~<br>~~OO~~||0.79<br>~~EEE~~<br>~~OO~~|||
|SRR4818A-220M<br>~~OO~~|22<br>~~OO~~|± 20<br>~~OO~~|25<br>~~OO~~|280<br>~~OO~~|80.3<br>~~OO~~|360.0<br>~~OO~~||1.00<br>~~OO~~|00<br>~~OO~~|1.25<br>~~OO~~||0.72<br>~~OO~~|||
|SRR4818A-270M<br>~~OO~~<br>~~oo~~<br>~~**O**~~|27<br>~~OO~~<br>~~EET~~<br>~~**O**O~~|± 20<br>~~OO~~<br>~~EET ~~<br>~~O~~|22<br>~~OO~~<br> ~~EET~~<br>~~O~~|317.<br>~~OO~~<br>~~EEE~~|17.6<br>~~OO~~<br>~~EEE~~|4000<br>~~OO~~<br>~~EEE~~||0.90<br>~~OO~~<br>~~EEE~~|90<br>~~OO~~<br>~~EEE~~|1.15<br>~~OO~~<br>~~EEE~~||0.63<br>~~OO~~<br>~~EEE~~|||
|||||||400.0<br>~~EEE~~|||||||||
|SRR4818A-330M<br>~~**O**~~|33<br>~~**O**O~~|± 20<br>~~O~~|20<br>~~O~~|399.1||500.0||0.70||0.90||0.56|||
|SRR4818A-390M<br>SRR4818A-470M<br>~~**O**~~<br>~~TT~~|39<br>47<br>~~**O**O~~<br>~~TT~~|± 20<br>± 20<br>~~O~~<br>~~TTTET~~|17<br>16<br>~~O~~<br>~~O~~<br>~~TET~~|439.3<br>504.1<br>~~O~~<br>~~ETO~~||540~~.0~~<br>6300<br>~~O~~<br>~~ETO~~||~~0.6~~3<br>060<br>~~O~~<br>~~ETO~~||~~0.80~~<br>0.75<br>~~O~~<br>~~ETO~~||0.53<br>0.47<br>~~O~~<br>~~ETO~~|||
|SRR4818A-470M<br>47<br>± 20<br>16<br>504.1<br>630.0<br>0.60<br>0.75<br>0.47<br>~~**Recommended Layout**~~<br>~~**Electrical Schematic**~~<br>~~**How to Order**~~<br>**SRR4818A  -  1R0Y**<br>Model<br>Value Code (see table)<br>4.20<br>(.165)<br>1.17<br>(.046)<br>1.98<br>(.078)<br>1.98<br>~~TT TETETO~~<br>oeeens.<br>S~~O~~I<br>.<br>RRR<br>_ESS<br>RRR<br>PLR<br>POQQRQDN|||||||630.0<br>~~**Electrical Schematic**~~<br>~~ETO~~|0.60<br>0.75<br>~~**Electrical Schematic**~~<br>~~ETO~~|||5<br>~~ETO~~|0<br>~~ETO~~|0.47<br>~~ETO~~||
||||||||~~**Electrical Schematic**~~<br>oe|~~**Electrical Schematic**~~<br>oeeens.|||||||
|||||||||oeeens.|||||||
||||||||||||||||



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

Operating Temp.  ......... -40 °C to +150 °C (Temperature rise included) Storage Temperature .. -40 °C to +150 °C Temperature Rise ..................... 20 °C typ. at rated Irms[1] 40 °C typ. at rated Irms[2] Rated Current ............ Inductance drops 35 % at Isat Moisture Sensitivity Level .....................1 ESD Classification (HBM)...................3B 

## ~~**Materials**~~ 

Core ..............................................Ferrite Wire ............................Enameled copper Terminal Finish ...................................Sn Packaging ......... 800 pcs. per 7-inch reel 

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Product Dimensions<br>4.80 ± 0.20<br>(.189 ± .008)<br>MARKED LINE - —— —|<br>INDICATES<br>WINDING<br>STARTING<br>TERMINAL 4.80 ± |  0.20<br>(.189 ± .008)<br>1.80 ± 0.20<br>(.071 ± .008)<br>1.60 ± 0.20 _ 1.60 ± 0.20<br>| (.063 ± ;  .008) (.063 ± .008)<br>i il<br>1.60 ± 0.20<br>(.063 ± .008)<br>MM<br>DIMENSIONS:<br>(INCHES)<br>**----- End of picture text -----**<br>


- *RoHS Directive 2015/863, Mar 31, 2015 and Annex. 

**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 FilterR4818A Series - Shield d Power Inductors** 

**==> picture [517 x 585] intentionally omitted <==**

**----- Start of picture text -----**<br>
Inductance vs. IDC<br>SRR4818A-1R0Y SRR4818A-1R5Y SRR4818A-2R2Y<br>120% 120% 120%<br>100% 100% 100%<br>80% 80% 80%<br>60% 60% 60%<br>40% 40% 40%<br>20% 20% 20%<br>0% 0% 0%<br>0 1 2 3 4 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.6 1.2 1.8 2.4<br>IDC (A) IDC (A) IDC (A)<br>SRR4818A-3R3Y SRR4818A-3R9Y SRR4818A-4R7Y<br>120% 120% 120%<br>100% 100% 100%<br>80% 80% 80%<br>60% 60% 60%<br>40% 40% 40%<br>20% 20% 20%<br>0% 0% 0%<br>0 0.6 1.2 1.8 2.4 0 0.6 1.2 1.8 2.4 0 0.34 0.68 1.02 1.36 1.70<br>IDC (A) IDC (A) IDC (A)<br>SRR4818A-5R6Y SRR4818A-6R8Y SRR4818A-8R2Y<br>120% 120% 120%<br>100% 100% 100%<br>80% 80% 80%<br>60% 60% 60%<br>40% 40% 40%<br>20% 20% 20%<br>0% 0% 0%<br>0 0.3 0.6 0.9 1.2 1.5 0 0.325 0.650 0.975 1.300 0 0.325 0.650 0.975 1.300<br>IDC (A) IDC (A) IDC (A)<br>SRR4818A-100M SRR4818A-120M SRR4818A-150M<br>120% 120% 120%<br>100% 100% 100%<br>80% 80% 80%<br>60% 60% 60%<br>40% 40% 40%<br>20% 20% 20%<br>0% 0% 0%<br>0 0.2 0.4 0.6 0.8 1.0 1.2 0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1.0<br>IDC (A) IDC (A) IDC (A)<br>L/LOA L/LOA L/LOA<br>L/LOA L/LOA L/LOA<br>L/LOA L/LOA L/LOA<br>L/LOA L/LOA L/LOA<br>**----- End of picture text -----**<br>


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 FilterR4818A Series - Shield d Power Inductors** 

**==> picture [517 x 597] intentionally omitted <==**

**----- Start of picture text -----**<br>
Inductance vs. IDC (Continued)<br>SRR4818A-180M SRR4818A-220M SRR4818A-270M<br>120% 120% 120%<br>100% 100% 100%<br>80% 80% 80%<br>60% 60% 60%<br>40% 40% 40%<br>20% 20% 20%<br>0% 0% 0%<br>0 0.15 0.30 0.45 0.60 0.75 0.90 0 0.2 0.4 0.6 0.8 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7<br>IDC (A) IDC (A) IDC (A)<br>SRR4818A-330M SRR4818A-390M SRR4818A-470M<br>120% 120% 120%<br>100% 100% 100%<br>80% 80% 80%<br>60% 60% 60%<br>40% 40% 40%<br>20% 20% 20%<br>0% 0% 0%<br>0 0.1 0.2 0.3 0.4 0.5 0.6 0 0.1 0.2 0.3 0.4 0.5 0.6 0 0.1 0.2 0.3 0.4 0.5 0.6<br>IDC (A) IDC (A) IDC (A)<br>Temperature vs. IDC<br>SRR4818A-1R0Y SRR4818A-1R5Y SRR4818A-2R2Y<br>50 40 40<br>40 32<br>30<br>30 24<br>20<br>20 16<br>10<br>10 8<br>0 0 0<br>0 1 2 3 4 5 6 0 1 2 3 4 5 0 0.7 1.4 2.1 2.8 3.5<br>IDC (A) IDC (A) IDC (A)<br>SRR4818A-3R3Y SRR4818A-3R9Y SRR4818A-4R7Y<br>50 50 50<br>40 40 40<br>30 30 30<br>20 20 20<br>10 10 10<br>0 0 0<br>0 0.7 1.4 2.1 2.8 3.5 0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1.0 1.5 2.0 2.5 3.0<br>IDC (A) IDC (A) IDC (A)<br>L/LOA L/LOA L/LOA<br>L/LOA L/LOA<br>L/LOA<br>T (°C) T (°C) T (°C)<br>Δ Δ Δ<br>T (°C) T (°C) T (°C)<br>Δ Δ Δ<br>**----- End of picture text -----**<br>


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 FilterR4818A Series - Shield d Power Inductors** 

**==> picture [517 x 580] intentionally omitted <==**

**----- Start of picture text -----**<br>
Temperature vs. IDC (Continued)<br>( )<br>SRR4818A-5R6Y SRR4818A-6R8Y SRR4818A-8R2Y<br>60 50 40<br>48 40 32<br>36 30 24<br>24 20 16<br>12 10 8<br>0 0 0<br>0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.6 1.2 1.8 2.4 0 0.5 1.0 1.5 2.0<br>IDC (A) IDC (A) IDC (A)<br>SRR4818A-100M SRR4818A-120M SRR4818A-150M<br>50 60 40<br>40 48 32<br>30 36 24<br>20 24 16<br>10 12 8<br>0 0 0<br>0 0.4 0.8 1.2 1.6 2.0 0 0.4 0.8 1.2 1.6 2.0 0 0.3 0.6 0.9 1.2 1.5 1.8<br>IDC (A) IDC (A) IDC (A)<br>SRR4818A-180M SRR4818A-220M SRR4818A-270M<br>60 50 50<br>48 40 40<br>36 30 30<br>24 20 20<br>12 10 10<br>0 0 0<br>0 0.3 0.6 0.9 1.2 1.5 1.8 0 0.3 0.6 0.9 1.2 1.5 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4<br>IDC (A) IDC (A) IDC (A)<br>SRR4818A-330M SRR4818A-390M SRR4818A-470M<br>50 60 50<br>40 48 40<br>30 36 30<br>20 24 20<br>10 12 10<br>0 0 0<br>0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1.0 0 0.15 0.30 0.45 0.60 0.75 0.90<br>IDC (A) IDC (A) IDC (A)<br>T (°C) T (°C) T (°C)<br>Δ Δ Δ<br>T (°C) T (°C) T (°C)<br>Δ Δ Δ<br>T (°C) T (°C) T (°C)<br>Δ Δ Δ<br>T (°C) T (°C) T (°C)<br>Δ Δ Δ<br>**----- End of picture text -----**<br>


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 FilterR4818A Series - Shield d Power Inductors** 

**==> picture [460 x 541] intentionally omitted <==**

**----- Start of picture text -----**<br>
Soldering Profle<br>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. Peak Temperature 260   max.<br>150 Max. Max. Peak Temperature -5  30 sec. max.<br>Max. Time Above 217  :  60~150 sec. max.<br>60~120 Sec.<br>100<br>-_ ;<br>50<br>0 50 100 150 200 250<br>Time (Seconds)<br>Packaging Specifcations<br>e 178 e 2.0 ± 0.5 16.5<br>(7.001) [DIA.] (.079 ± .020) (.650)<br>aL THICKNESS<br>13.0<br>21.0 ± 0.8<br>(.512)<br>(.827 ± .031) DIA.<br>= fey| ~ 7 (1.969 - 0) ay 50.0 -0 aN (004)Las<br>— Ps<br>13.0<br>DIA.<br>(.512)<br>12.0<br>14.0 +0<br>(.551 +0) (.472)<br>2.0 8.0<br>END (.079) ih 4 (.315) START -<br>o000000/f000<br>100 100 100 100<br>ooo<br>Leader Trailer<br>ooor 0/0 ojo ojo0/f[oo00000<br>no component no component<br>200 m/m min. Components 400 m/m min.<br>——$_§| USER DIRECTION OF FEED  —><br>QTY: 800 PCS. PER REEL<br>MM<br>DIMENSIONS:<br>(INCHES)<br>Temperature (°C)<br>**----- End of picture text -----**<br>


07/17 

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

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- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/bourns/srr4818a-3r3y/inductor-shielded-3-3uh-30-aec/dp/2775393)
---

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