# Power Inductor (SMD), 4.7 µH, 1.9 A, Shielded, 950 mA, SRR3818A Series

![Product image](https://novapart.co/image/farnell:2775382RL/)

**URL**: https://novapart.co/products/SRR3818A-4R7Y/power-inductor-smd-47-h-19-a-shielded-950-ma
**SKU**: SRR3818A-4R7Y
**Manufacturer**: BOURNS
**Category**: Passive Components || Inductors || Power Inductors || SMD Power Inductors
**Price**: €0.3130
**Stock**: 1000+
**Lead Time**: 148 days (indicative)

## Description

Inductance:4.7µH; RMS Current (Irms):1.9A; Inductor Construction:Shielded; Saturation Current (Isat):950mA; Product Range:SRR3818A Series; Power Inductor Case:3.8mm x 3.8mm x 1.8

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Inductance | 4.7µH |
| Product Range | SRR3818A Series |
| Product Width | 3.8mm |
| Product Height | 1.8mm |
| Product Length | 3.8mm |
| Dc Resistance Max | 0.12ohm |
| Rms Current (Irms) | 1.9A |
| Inductance Tolerance | ± 30% |
| Inductor Construction | Shielded |
| Inductor Case / Package | - |
| Saturation Current (Isat) | 950mA |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2775382RL/)

**==> picture [32 x 32] intentionally omitted <==**

**----- Start of picture text -----**<br>
*RoHS COMPLIANT<br>& AEC APPROVED<br>**----- End of picture text -----**<br>


## **Features** 

n Shielded construction n Inductance range: 1 to 100 µH n Heating current up to 3.6 A n AEC-Q200 qualified 

n RoHS compliant* and halogen free** 

## **Applications** 

n Automotive systems: 

- Driver assistant 

- Infotainment -  Lighting 

- n DC/DC converters 

n Power supplies 

## **SRR3818A Series - Shielded Power Inductors** 

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

## ~~**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 

|**Bourns**<br>**Part Number**<br>~~ee~~|**Inductance @**<br>**100 kHz/0.1 V**|**Inductance @**<br>**100 kHz/0.1 V**|**SRF**<br>**(MHz)**<br>**Typ.**<br>~~es~~|**DCR (m**W**)**|**DCR (m**W**)**|**DCR (m**W**)**|**DCR (m**W**)**|**DCR (m**W**)**|**I rms1**|**I rms1**|**I rms1**|**I rms1**|**I rms2**<br>**(A)**<br>**Typ.**|**I rms2**<br>**(A)**<br>**Typ.**|**I rms2**<br>**(A)**<br>**Typ.**|**I sat**<br>**(A)**|**I sat**<br>**(A)**|**I sat**<br>**(A)**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||||||||||**(A)**<br>**Typ.**||||**(A)**<br>**Typ.**||||||
||**L (µH)**|**Tol. (%)**<br>~~es~~||**Typ.**<br>~~es~~|||**Max.**||||||||||||
||||||||||||||**Typ.**||**Typ.**||||
|SRR3818A-1R0Y<br>~~es~~<br>~~ee~~|1.0<br>~~es~~|±30<br>~~es~~<br>~~es~~|165<br>~~es~~<br>~~es~~|27.5<br>~~es~~<br>~~es~~|||37<br>~~es~~||2.75<br>~~es~~||||3<br>~~es~~|3.6<br>~~es~~|6<br>~~es~~|~~es~~|2.1<br>~~es~~||
|SRR3818A-1R5Y<br>~~ee~~|1.5|±30<br>~~es~~|125<br>~~es~~|33<br>~~es~~|||47||2.5||||3|3.1|.1|1.6|||
|SRR3818A-2R2Y<br>~~ee~~<br>~~aa~~|2.2<br>~~aa~~|±30<br>~~es~~<br>~~aa~~|95<br>~~es~~<br>~~aa~~|45.5<br>~~es~~<br>~~aa~~|||60<br>~~aa~~||2||||2.|2.6|6|1.4|||
|SRR3818A-2R7Y<br>~~aa~~<br>~~a~~<br>~~ee~~|2.7<br>~~aa~~<br>~~a~~|±30<br>~~aa~~<br>~~a~~|90<br>~~aa~~|49.5<br>~~aa~~|||65<br>~~aa~~||1.9||||2.|2.5|5||1.3||
|SRR3818A-3R3Y<br>~~a~~<br>~~ee~~|3.3<br>~~a~~|±30<br>~~a~~|75|64.5|||85||1.7||||2.1|2.1|2.1|1.1|1.15||
|SRR3818A-3R9Y<br>~~ee~~<br>~~aa~~|3.9<br>~~aa~~|±30<br>~~aa~~|70<br>~~aa~~|80<br>~~aa~~|||105<br>~~aa~~||1.6||||2|||1.|||
||||||||||1.6||||||||||
|SRR3818A-4R7Y<br>~~aa~~<br>~~a~~<br>~~ee~~|4.7<br>~~aa~~<br>~~a~~|±30<br>~~aa~~<br>~~a~~|60<br>~~aa~~|90<br>~~aa~~|||120<br>~~aa~~||1.5||||1.9|||0.95|||
|SRR3818A-6R8Y<br>~~a~~<br>~~ee~~|6.8<br>~~a~~|±30<br>~~a~~|50|125|||160||1.2||1.25||1.6|||0.8|||
|SRR3818A-100M<br>~~ee~~<br>~~aa~~|10<br>~~aa~~|± 20<br>~~aa~~|40<br>~~aa~~|~~aa~~|180<br>~~aa~~||235<br>~~aa~~||||1||1.3|||0.65|||
|SRR3818A-150M<br>~~aa~~<br>~~a~~<br>~~ee~~|15<br>~~aa~~<br>~~a~~|± 20<br>~~aa~~<br>~~a~~|30<br>~~aa~~|~~aa~~|260<br>~~aa~~||340<br>~~aa~~|||0|0.8||1.05|||0.55|||
|SRR3818A-220M<br>~~ee~~|22|± 20|25||395||500|||0.|.65|65|0.8|||0.43|||
|SRR3818A-330M<br>~~ee~~<br>~~aa~~|33<br>~~aa~~|± 20<br>~~aa~~|20<br>~~aa~~|590<br>~~aa~~||590<br>~~aa~~|740<br>~~aa~~|||0|05||065|||034|||
||||||||||0.5||||0.65||||||
|SRR3818A-470M<br>~~aa~~<br>~~a~~<br>~~ee~~|47<br>~~aa~~<br>~~a~~<br>|± 20<br>~~aa~~<br>~~a~~<br>|15<br>~~aa~~<br>|825<br>~~aa~~<br>|||1030<br>~~aa~~<br>||0.45<br>||||0.56<br>|||0.3<br>|||
|SRR3818A-680M<br>~~eea~~|68<br>~~a~~|± 20<br>~~a~~|13<br>~~a~~|1280<br>~~a~~|||~~a~~|1600<br>~~a~~|0.38<br>~~a~~||||0.46<br>~~a~~|||0.24<br>~~a~~|||
|SRR3818A-101M<br>~~eea~~|100<br>~~a~~|± 20<br>~~a~~|11<br>~~a~~|2040<br>~~a~~|||~~a~~|2600<br>~~a~~|0.28<br>~~a~~||||0<br>~~a~~|0.34<br>~~a~~||0.2<br>~~a~~|||
|~~**Recommended Layout**~~<br>~~**Electrical Schematic**~~<br>~~**How to Order**~~<br>**SRR3818A  -  1R0Y**<br>Model<br>Value Code (see table)<br>4.30<br>(.169)<br>1.10<br>(.043)<br>1.60<br>(.063)<br>1.60<br>(.063)<br>DIMENSIONS:<br>MM<br>(INCHES)<br>~~a~~<br>~~me~~<br>|<br>{|<br>SS<br>_<br>4<br>KXSOOO<br>racetacetete<br>ERM<br>~~—~~||||||||~~**Electrical Schematic**~~<br>~~a~~|~~a~~|||||~~a~~|~~a~~||||
||||||||||||||||||||
||||||||||~~**Electrical Schematic**~~||||||||||
||||||||||~~**Electrical Schematic**~~||||||||||
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Core ..............................................Ferrite Wire ............................Enameled copper Terminal Finish ...................................Sn Packaging ....... 1000 pcs. per 7-inch reel 

- *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 FilterR3818A Series - Shield d Power Inductors** 

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**----- Start of picture text -----**<br>
Inductance vs. IDC<br>SRR3818A-1R0Y SRR3818A-1R5Y SRR3818A-2R2M<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 0.5 1.0 1.5 2.0 2.5 0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 2.0<br>IDC (A) IDC (A) IDC (A)<br>SRR3818A-2R7M SRR3818A-3R3M SRR3818A-3R9M<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 0.4 0.8 1.2 1.6 0 0.3 0.6 0.9 1.2 1.5 0 0.3 0.6 0.9 1.2<br>IDC (A) IDC (A) IDC (A)<br>SRR3818A-4R7M SRR3818A-6R8M SRR3818A-100M<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 0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8<br>IDC (A) IDC (A) IDC (A)<br>SRR3818A-150M SRR3818A-220M SRR3818A-330M<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 0.1 0.2 0.3 0.4 0.5 0.6 0 0.1 0.2 0.3 0.4 0.5 0 0.1 0.2 0.3 0.4<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 FilterR3818A Series - Shield d Power Inductors** 

**==> picture [517 x 591] intentionally omitted <==**

**----- Start of picture text -----**<br>
Inductance vs. IDC (Continued)<br>SRR3818A-470M SRR3818A-680M SRR3818A-101M<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 0.1 0.2 0.3 0 0.1 0.1 0.3 0.2 0.3<br>IDC (A) IDC (A) IDC (A)<br>Temperature vs. IDC<br>SRR3818A-1R0Y SRR3818A-1R5Y SRR3818A-2R2M<br>60 50 50<br>48 40 40<br>36 30 30<br>24 20 20<br>12 10 10<br>0 0 1 2 3 4 5 0 0 1 2 3 4 0 0 0.6 1.2 1.8 2.4 3.0<br>IDC (A) IDC (A) IDC (A)<br>SRR3818A-2R7M SRR3818A-3R3M SRR3818A-3R9M<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 0.6 1.2 1.8 2.4 3.0 0 0.5 1.0 1.5 2.0 2.5 0 0.5 1.0 1.5 2.0 2.5<br>IDC (A) IDC (A) IDC (A)<br>SRR3818A-4R7M SRR3818A-6R8M SRR3818A-100M<br>50 60 50<br>40 48 40<br>30 36 30<br>20 24<br>20<br>10 12<br>10<br>0 0<br>0 0.45 0.90 1.35 1.80 2.25 0 0.5 1.0 1.5 2.0 0<br>0 0.4 0.8 1.2 1.6<br>IDC (A) IDC (A)<br>IDC (A)<br>L/LOA L/LOA 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>T (°C) T (°C)<br>Δ Δ T (°C)<br>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 FilterR3818A Series - Shield d Power Inductors** 

**==> picture [517 x 289] intentionally omitted <==**

**----- Start of picture text -----**<br>
Temperature vs. IDC (Continued)<br>SRR3818A-150M SRR3818A-220M SRR3818A-330M<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 0.3 0.6 0.9 1.2 0 0.2 0.4 0.6 0.8 1.0 0 0.4 0.4 0.6 0.8<br>IDC (A) IDC (A) IDC (A)<br>SRR3818A-470M SRR3818A-680M SRR3818A-101M<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 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0 0.1 0.2 0.3 0.4<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>**----- 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 FilterR3818A Series - Shield d Power Inductors** 

**==> picture [464 x 529] 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  Cc :  60~150 sec. max.<br>60~120 Sec.<br>100 = Tr A y oS<br>50<br>0 50 100 150 200 250<br>Time (Seconds)<br>Packaging Specifcations<br>178 2.0 ± 0.5 16.5<br>(7.001) [DIA.] (.079 ± .020) (.650)<br>13.0<br>21.0 ± 0.8<br>(.512)<br>(.827 ± .031) DIA.<br>7 a h — - \\ =<br>50.0 -0<br>(1.969 - 0)<br>=e a + [hae NK os<br>m 13.0 a DIA. ae a<br>(.512)<br>_ y) “3<br>12.0<br>14.0 +0<br>(.551 +0) (.472)<br>2.0 8.0<br>END (.079) SA =} (.315) START -<br>000000//900 0/0 0/0 ojo 0 000000<br>100 100 100 100<br>ooo Leader ooo Trailer<br>no component no component<br>200 m/m min. Components 400 m/m min.<br>USER DIRECTION OF FEED<br>———<br>QTY: 1000 PCS. PER REEL<br>MM<br>DIMENSIONS:<br>(INCHES)<br>Temperature (°C)<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. 

07/17 



## Links

- [View this product on Novapart](https://novapart.co/products/SRR3818A-4R7Y/power-inductor-smd-47-h-19-a-shielded-950-ma)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/bourns/srr3818a-4r7y/inductor-shielded-4-7uh-30-aec/dp/2775382RL)
---

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