# Power Inductor (SMD), 470 µH, 827 mA, Shielded, 1.62 A, DRA Series

![Product image](https://novapart.co/image/farnell:2145208RL/)

**URL**: https://novapart.co/products/DRA127-471-R/power-inductor-smd-470-h-827-ma-shielded-162-a-dra
**SKU**: DRA127-471-R
**Manufacturer**: EATON COILTRONICS
**Category**: Passive Components || Inductors || Power Inductors || SMD Power Inductors
**Price**: €0.4920
**Stock**: 10+

## Description

Inductance:470µH; RMS Current (Irms):827mA; Inductor Construction:Shielded; Saturation Current (Isat):1.62A; Product Range:DRA Series; Power Inductor Case:12.5mm x 12.5mm x 8mm; DC Resi

## Specifications

| Parameter | Value |
|---|---|
| Inductance | 470µH |
| Product Range | DRA Series |
| Product Width | 12.5mm |
| Product Height | 8mm |
| Product Length | 12.5mm |
| Dc Resistance Max | - |
| Rms Current (Irms) | 827mA |
| Inductance Tolerance | ± 20% |
| Inductor Construction | Shielded |
| Saturation Current (Isat) | 1.62A |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2145208RL/)

**DRA Series High Power Density, High Efficiency, Shielded Inductors** 

## **Magnetics Solutions For Automotive Applications** 

## **Description** 

- 165°C maximum total temperature operation 

**==> picture [32 x 11] intentionally omitted <==**

**----- Start of picture text -----**<br>
RoHS<br>2002/95/EC<br>**----- End of picture text -----**<br>


- Five sizes of Automotive grade shielded drum core inductors 

- Inductance range from 0.28uH to 1000uH 

- Current range up to 56 Amps 

- Mechanical secure mounting for high shock and vibration environments 

- Good thermal dispersion with thermal conductive epoxy 

- Customized dual winding versions available upon request for SEPIC or Flyback configurations 

## **Applications** 

- Automotive Electronics (under the hood, interior/exterior) 

- Telematics 

- DC-DC converters 

- Buck, boost, forward, and resonant converters 

- Noise filtering and filter chokes 

## **Environmental Data** 

## **Packaging** 

   - Supplied in tape and reel packaging, 1350 (DRA73), 1100 (DRA74), 750 (DRA124), 600 (DRA125), and 350 (DRA127) per reel 

- Storage temperature range: -40°C to +165°C 

- Operating temperature range: -40°C to +165°C (range is application specific) 

- Solder reflow temperature: +260°C max. for 10 seconds max. 

- Complies with AEC-Q200 standard 

|**Part Number**|**Rated**<br>**Inductance**|**OCL (1)**<br>**µH**<br>**+/-20%**|**Irms (2)**<br>**Amperes**|**Isat (3)**<br>**Amperes**|**Isat (4)**<br>**Amperes**|**DCR (5)**<br>**(**Ω**)**<br>**Typ.**|**K-factor (6)**|
|---|---|---|---|---|---|---|---|
|DRA73-R33-R<br>~~ooo~~|0.33<br>~~ooo~~|0.29<br>~~ooo~~|8.42<br>~~ooo~~|14.80<br>~~ooo~~|11.84<br>~~ooo~~|0.0040<br>~~ooo~~|60.6<br>~~ooo~~|
|DRA73-1R0-R<br>~~ooo~~<br>~~rT~~|1.00<br>~~ooo~~<br>~~rT~~|0.91<br>~~ooo~~<br>~~Rs~~|6.50<br>~~ooo~~<br>~~rs~~|8.22<br>~~ooo~~<br>~~QQ~~|6.58<br>~~ooo~~<br>~~QQ~~|0.0067<br>~~ooo~~<br>~~QQ~~|33.7<br>~~ooo~~|
|DRA73-1R5-R<br>~~ooo~~<br>~~rT~~<br>~~ooo~~|1.50<br>~~ooo~~<br>~~rT~~<br>~~ooo~~|1.36<br>~~ooo~~<br>~~Rs~~<br>~~ooo~~|5.39<br>~~ooo~~<br>~~rs~~<br>~~ooo~~|6.73<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~|5.38<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~|0.0097<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~|27.5<br>~~ooo~~<br>~~ooo~~|
|DRA73-2R2-R<br>~~ooo~~<br>~~rT~~<br>~~ooo~~<br>~~Rs~~|2.20<br>~~ooo~~<br>~~rT~~<br>~~ooo~~<br>~~Rs~~|2.52<br>~~ooo~~<br>~~Rs~~<br>~~ooo~~<br>~~GQ~~|4.18<br>~~ooo~~<br>~~rs~~<br>~~ooo~~<br>~~GQ~~|4.93<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~<br>~~GQ~~|3.95<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~<br>~~GQ~~<br>~~**Q**O~~|0.016<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~<br>~~GQ~~|20.2<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~|
|DRA73-3R3-R<br>~~rT~~<br>~~ooo~~<br>~~Rs~~|3.30<br>~~rT~~<br>~~ooo~~<br>~~Rs~~<br>~~rs~~|3.18<br>~~Rs~~<br>~~ooo~~<br>~~GQ~~<br>~~G~~|3.59<br>~~rs~~<br>~~ooo~~<br>~~GQ~~<br>~~G~~|4.35<br>~~QQ~~<br>~~ooo~~<br>~~GQ~~<br>~~G~~|3.48<br>~~QQ~~<br>~~ooo~~<br>~~GQ~~<br>~~**Q**O~~<br>~~GOO~~|0.022<br>~~QQ~~<br>~~ooo~~<br>~~GQ~~<br>~~OO~~|17.8<br>~~ooo~~<br>~~GQ~~|
|DRA73-4R7-R<br>~~ooo~~<br>~~Rs~~<br>~~ooo~~|4.70<br>~~ooo~~<br>~~Rs~~<br>~~rs~~<br>~~ooo~~|4.86<br>~~ooo~~<br>~~GQ~~<br>~~G~~<br>~~ooo~~|2.92<br>~~ooo~~<br>~~GQ~~<br>~~G~~<br>~~ooo~~|3.52<br>~~ooo~~<br>~~GQ~~<br>~~G~~<br>~~ooo~~|2.82<br>~~ooo~~<br>~~GQ~~<br>~~**Q**O~~<br>~~GOO~~<br>~~ooo~~|0.033<br>~~ooo~~<br>~~GQ~~<br>~~OO~~<br>~~ooo~~|14.4<br>~~ooo~~<br>~~GQ~~<br>~~ooo~~|
|DRA73-6R8-R<br>~~Rs~~<br>~~ooo~~<br>~~ooo~~|6.80<br>~~rs~~<br>~~ooo~~<br>~~ooo~~|6.63<br>~~G~~<br>~~ooo~~<br>~~ooo~~|2.62<br>~~G~~<br>~~ooo~~<br>~~ooo~~|2.96<br>~~G~~<br>~~ooo~~<br>~~ooo~~|2.37<br>~~**Q**O~~<br>~~GOO~~<br>~~ooo~~<br>~~ooo~~|0.041<br>~~OO~~<br>~~ooo~~<br>~~ooo~~|12.1<br>~~ooo~~<br>~~ooo~~|
|DRA73-8R2-R<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|8.20<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|8.06<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|2.30<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|2.74<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|2.19<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.053<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|11.2<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-100-R<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~Rs~~|10.0<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~Rs~~|10.27<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~|2.11<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~|2.39<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~|1.91<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~<br>~~**Q**O~~|0.064<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~|9.8<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~|
|DRA73-150-R<br>~~ooo~~<br>~~ooo~~<br>~~Rs~~|15.0<br>~~ooo~~<br>~~ooo~~<br>~~Rs~~<br>~~rs~~|14.98<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~<br>~~G~~|1.74<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~<br>~~G~~|2.00<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~<br>~~G~~|1.60<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~<br>~~**Q**O~~<br>~~GOO~~|0.094<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~<br>~~OO~~|8.2<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~|
|DRA73-220-R<br>~~ooo~~<br>~~Rs~~<br>~~ooo~~|22.0<br>~~ooo~~<br>~~Rs~~<br>~~rs~~<br>~~ooo~~|22.39<br>~~ooo~~<br>~~GQ~~<br>~~G~~<br>~~ooo~~|1.42<br>~~ooo~~<br>~~GQ~~<br>~~G~~<br>~~ooo~~|1.64<br>~~ooo~~<br>~~GQ~~<br>~~G~~<br>~~ooo~~|1.32<br>~~ooo~~<br>~~GQ~~<br>~~**Q**O~~<br>~~GOO~~<br>~~ooo~~|0.141<br>~~ooo~~<br>~~GQ~~<br>~~OO~~<br>~~ooo~~|6.7<br>~~ooo~~<br>~~GQ~~<br>~~ooo~~|
|DRA73-330-R<br>~~Rs~~<br>~~ooo~~<br>~~ooo~~|33.0<br>~~rs~~<br>~~ooo~~<br>~~ooo~~|31.84<br>~~G~~<br>~~ooo~~<br>~~ooo~~|1.25<br>~~G~~<br>~~ooo~~<br>~~ooo~~|1.35<br>~~G~~<br>~~ooo~~<br>~~ooo~~|1.08<br>~~**Q**O~~<br>~~GOO~~<br>~~ooo~~<br>~~ooo~~|0.183<br>~~OO~~<br>~~ooo~~<br>~~ooo~~|5.5<br>~~ooo~~<br>~~ooo~~|
|DRA73-470-R<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|47.0<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|47.83<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|1.02<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|1.10<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.884<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.275<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|4.5<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-680-R<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|68.0<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|66.89<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.845<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.937<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.749<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.397<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|3.8<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-820-R<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~rT~~|82.0<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~rT~~|83.77<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~Rs~~|0.731<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~rs~~|0.851<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~|0.680<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~|0.530<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~|3.5<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-101-R<br>~~ooo~~<br>~~ooo~~<br>~~rT~~<br>~~ooo~~|100<br>~~ooo~~<br>~~ooo~~<br>~~rT~~<br>~~ooo~~|101.7<br>~~ooo~~<br>~~ooo~~<br>~~Rs~~<br>~~ooo~~|0.682<br>~~ooo~~<br>~~ooo~~<br>~~rs~~<br>~~ooo~~|0.763<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~|0.610<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~|0.609<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~|3.1<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-151-R<br>~~ooo~~<br>~~rT~~<br>~~ooo~~<br>~~ooo~~|150<br>~~ooo~~<br>~~rT~~<br>~~ooo~~<br>~~ooo~~|151.1<br>~~ooo~~<br>~~Rs~~<br>~~ooo~~<br>~~ooo~~|0.551<br>~~ooo~~<br>~~rs~~<br>~~ooo~~<br>~~ooo~~|0.632<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~<br>~~ooo~~|0.506<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~<br>~~ooo~~|0.932<br>~~ooo~~<br>~~QQ~~<br>~~ooo~~<br>~~ooo~~|2.6<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-221-R<br>~~rT~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|220<br>~~rT~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|218.8<br>~~Rs~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.479<br>~~rs~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.510<br>~~QQ~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.408<br>~~QQ~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|1.23<br>~~QQ~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|2.1<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-331-R<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|330<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|326.4<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.391<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.423<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|0.338<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|1.85<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|1.7<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-471-R<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~rT~~|470<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~rT~~|472.6<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~Rs~~|0.326<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~rs~~|0.354<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~|0.283<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~|2.67<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~|1.4<br>~~ooo~~<br>~~ooo~~<br>~~ooo~~|
|DRA73-681-R<br>~~ooo~~<br>~~ooo~~<br>~~rT~~<br>~~es~~|680<br>~~ooo~~<br>~~ooo~~<br>~~rT~~<br>~~Rs~~<br>|682.9<br>~~ooo~~<br>~~ooo~~<br>~~Rs~~<br>~~GQ~~|0.270<br>~~ooo~~<br>~~ooo~~<br>~~rs~~<br>~~GQ~~|0.297<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~<br>~~GQ~~|0.238<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~<br>~~GQ~~<br>~~QO~~|3.89<br>~~ooo~~<br>~~ooo~~<br>~~QQ~~<br>~~GQ~~|1.2<br>~~ooo~~<br>~~ooo~~<br>~~GQ~~|
|DRA73-821-R<br>~~ooo~~<br>~~rT~~<br>~~es~~|820<br>~~ooo~~<br>~~rT~~<br>~~Rs~~<br>~~es~~|825.3<br>~~ooo~~<br>~~Rs~~<br>~~GQ~~<br>~~ns~~|0.252<br>~~ooo~~<br>~~rs~~<br>~~GQ~~<br>~~nD~~|0.267<br>~~ooo~~<br>~~QQ~~<br>~~GQ~~<br>~~QO~~|0.214<br>~~ooo~~<br>~~QQ~~<br>~~GQ~~<br>~~QO~~|4.46<br>~~ooo~~<br>~~QQ~~<br>~~GQ~~|1.1<br>~~ooo~~<br>~~GQ~~|
|DRA73-102-R<br>~~rT~~<br>~~es~~|1000<br>~~rT~~<br>~~Rs~~<br>~~es~~|991.9<br>~~Rs~~<br>~~GQ~~<br>~~ns~~|0.235<br>~~rs~~<br>~~GQ~~<br>~~nD~~|0.239<br>~~QQ~~<br>~~GQ~~<br>~~QO~~|0.192<br>~~QQ~~<br>~~GQ~~<br>~~QO~~|5.15<br>~~QQ~~<br>~~GQ~~|1.0<br>~~GQ~~|



   - (6) K-factor: Used to determine B p-p for core loss (see graph). B p-p = K*L*∆I, B p-p(mT), K: (K factor from table), L: (Inductance in µH), 

- (2) Irms: DC current for an approximate ∆T of 40°C without core loss. Derating is necessary for AC currents. PCB layout, trace thickness and width, air-flow, and proximity of other heat generating components will affect the temperature rise. It is recommended that the temperature of the part not exceed 165°C under worst case operating conditions verified in the end application. 

   - ∆I (Peak to peak ripple current in Amps). 

   - (7) Part Number Definition: DRAxxx-xxx-R DRAxxx = Product code and size; -xxx = Inductance value in uH; R = decimal point; If no R is present, third character = # of zeros. -R suffix = RoHS compliant 

- (3) Isat Amperes peak for approximately 30% rolloff (@25°C) 

- (4) Isat Amperes peak for approximately 40% rolloff (@125°C) 

## **Magnetics Solutions For Automotive Applications** 

## **DRA Series High Power Density, High Efficiency, Shielded Inductors** 

|**Part Number**|**Rated**<br>**Inductance**|**OCL (1)**<br>**µH**<br>**+/-20%**|**Irms (2)**<br>**Amperes**|**Isat (3)**<br>**Amperes**|**Isat (4)**<br>**Amperes**|**DCR (5)**<br>**(**Ω**)**<br>**Typ.**|**K-factor (6)**|
|---|---|---|---|---|---|---|---|
|DRA74-R33-R|0.33|0.288|7.26|18.40|14.72|0.0054|52.6|
|DRA74-1R0-R|1.00|0.897|6.01|10.22|8.18|0.0078|29.2|
|DRA74-1R5-R|1.50|1.31|5.55|8.36|6.69|0.0092|23.9|
|DRA74-2R2-R|2.20|2.33|4.82|6.13|4.91|0.012|17.5|
|DRA74-3R3-R|3.30|3.05|4.16|5.41|4.33|0.016|15.5|
|DRA74-4R7-R|4.70|4.68|3.41|4.38|3.50|0.024|12.5|
|DRA74-6R8-R|6.80|6.51|2.91|3.68|2.94|0.034|10.5|
|DRA74-8R2-R|8.20|8.51|2.66|3.17|2.54|0.040|9.1|
|DRA74-100-R|10.0|9.62|2.56|2.97|2.37|0.043|8.5|
|DRA74-150-R|15.0|15.14|2.06|2.36|1.89|0.067|6.7|
|DRA74-220-R|22.0|22.25|1.68|1.96|1.57|0.100|5.6|
|DRA74-330-R|33.0|33.21|1.37|1.61|1.29|0.151|4.6|
|DRA74-470-R|47.0|46.56|1.14|1.37|1.099|0.219|3.9|
|DRA74-680-R|68.0|68.37|0.996|1.108|0.887|0.286|3.2|
|DRA74-820-R|82.0|81.45|0.879|1.034|0.827|0.367|3.0|
|DRA74-101-R|100|98.5|0.822|0.929|0.743|0.419|2.7|
|DRA74-151-R|150|150.9|0.661|0.748|0.598|0.648|2.1|
|DRA74-221-R|220|218.9|0.544|0.626|0.501|0.96|1.8|
|DRA74-331-R|330|328.9|0.435|0.514|0.411|1.50|1.5|
|DRA74-471-R|470|471.5|0.383|0.420|0.336|1.93|1.2|
|DRA74-681-R|680|682.8|0.315|0.352|0.282|2.86|1.0|
|DRA74-821-R|820|815.0|0.279|0.327|0.262|3.63|0.9|
|DRA74-102-R|1000|1001.7|0.260|0.292|0.234|4.19|0.8|
|DRA124-R47-R|0.47|0.423|15.15|30.80|24.6|0.0019|16.7|
|DRA124-1R0-R|1.00|0.821|11.65|22.00|17.6|0.0031|12.0|
|DRA124-1R5-R|1.50|1.36|9.36|17.11|13.7|0.0049|9.3|
|DRA124-2R2-R|2.20|2.04|7.64|14.00|11.2|0.007|7.6|
|DRA124-3R3-R|3.30|2.79|6.94|11.85|9.48|0.009|6.4|
|DRA124-4R7-R|4.70|4.74|5.47|9.06|7.25|0.014|4.9|
|DRA124-6R8-R|6.80|7.28|4.46|7.33|5.87|0.021|4.0|
|DRA124-8R2-R|8.20|8.88|3.87|6.70|5.36|0.028|3.6|
|DRA124-100-R|10.0|10.37|3.67|6.16|4.93|0.031|3.3|
|DRA124-150-R|15.0|14.10|3.10|5.31|4.25|0.044|2.9|
|DRA124-220-R|22.0|23.00|2.44|4.16|3.33|0.071|2.3|
|DRA124-330-R|33.0|34.13|1.98|3.42|2.74|0.108|1.9|
|DRA124-470-R|47.0|46.27|1.78|2.91|2.325|0.134|1.6|
|DRA124-680-R|68.0|69.77|1.454|2.369|1.895|0.201|1.3|
|DRA124-820-R|82.0|80.57|1.285|2.232|1.786|0.257|1.2|
|DRA124-101-R|100|98.8|1.199|2.000|1.600|0.296|1.1|
|DRA124-151-R|150|151.7|0.967|1.621|1.297|0.454|0.9|
|DRA124-221-R|220|209.6|0.865|1.363|1.090|0.568|0.7|
|DRA124-331-R|330|326.9|0.690|1.092|0.874|0.892|0.6|
|DRA124-471-R|470|473.0|0.568|0.911|0.729|1.32|0.5|
|DRA124-681-R|680|682.1|0.466|0.759|0.607|1.96|0.4|
|DRA124-821-R|820|826.7|0.406|0.697|0.557|2.57|0.4|
|DRA124-102-R|1000|1001.0|0.380|0.629|0.503|2.94|0.3|
|DRA125-R47-R|0.47|0.453|18.47|33.20|26.56|0.0016|16.7|
|DRA125-1R0-R|1.00|0.854|15.94|23.71|18.97|0.0021|12.0|
|DRA125-1R5-R|1.50|1.41|12.89|18.44|14.76|0.0033|9.3|
|DRA125-2R2-R|2.20|2.12|10.61|15.09|12.07|0.0048|7.6|
|DRA125-3R3-R|3.30|2.89|9.69|12.77|10.22|0.0058|6.4|
|DRA125-4R7-R|4.70|4.90|7.67|9.76|7.81|0.0092|4.9|
|DRA125-6R8-R|6.80|6.23|6.81|8.74|6.99|0.012|4.4|
|DRA125-8R2-R|8.20|7.49|6.41|7.90|6.32|0.013|4.0|
|DRA125-100-R|10.0|9.22|5.57|7.22|5.77|0.017|3.6|



- (1) Open Circuit Inductance test parameters: 100kHz, 0.25V, 0.0Adc, tolerance is ±20% 

- (2) Irms: DC current for an approximate ∆T of 40°C without core loss. Derating is necessary for AC currents. PCB layout, trace thickness and width, air-flow, and proximity of other heat generating components will affect the temperature rise. It is recommended that the temperature of the part not exceed 165°C under worst case operating conditions verified in the end application. 

- (3) Isat Amperes peak for approximately 30% rolloff (@25°C) 

   - (5) DCR limits @ 25°C 

   - (6) K-factor: Used to determine B p-p for core loss (see graph). B p-p = K*L*∆I, B p-p(mT), K: (K factor from table), L: (Inductance in µH), 

   - ∆I (Peak to peak ripple current in Amps). 

   - (7) Part Number Definition: DRAxxx-xxx-R 

   - DRAxxx = Product code and size; -xxx = Inductance value in uH; R = decimal point; If no R is present, third character = # of zeros. 

   - -R suffix = RoHS compliant 

- (4) Isat Amperes peak for approximately 40% rolloff (@125°C) 

## **Magnetics Solutions For Automotive Applications** 

## **DRA Series High Power Density, High Efficiency, Shielded Inductors** 

|**Part Number**|**Rated**<br>**Inductance**|**OCL (1)**<br>**µH**<br>**+/-20%**|**Irms (2)**<br>**Amperes**|**Isat (3)**<br>**Amperes**|**Isat (4)**<br>**Amperes**|**DCR (5)**<br>**(**Ω**)**<br>**Typ.**|**K-factor (6)**|
|---|---|---|---|---|---|---|---|
|DRA125-150-R|15.0|14.67|4.45|5.72|4.58|0.027|2.9|
|DRA125-220-R|22.0|20.65|3.95|4.74|3.79|0.035|2.4|
|DRA125-330-R|33.0|31.47|3.19|3.86|3.09|0.053|1.9|
|DRA125-470-R|47.0|47.83|2.59|3.13|2.506|0.081|1.6|
|DRA125-680-R|68.0|68.48|2.125|2.635|2.108|0.120|1.3|
|DRA125-820-R|82.0|80.86|2.005|2.406|1.925|0.135|1.2|
|DRA125-101-R|100|97.6|1.745|2.213|1.771|0.178|1.1|
|DRA125-151-R|150|150.0|1.409|1.785|1.428|0.273|0.9|
|DRA125-221-R|220|222.8|1.142|1.469|1.175|0.416|0.7|
|DRA125-331-R|330|325.1|0.998|1.194|0.955|0.543|0.6|
|DRA125-471-R|470|466.3|0.826|1.006|0.805|0.79|0.5|
|DRA125-681-R|680|683.3|0.673|0.834|0.667|1.20|0.4|
|DRA125-821-R|820|813.6|0.632|0.758|0.606|1.36|0.4|
|DRA125-102-R|1000|992.8|0.552|0.695|0.556|1.78|0.4|
|DRA127-R47-R|0.47|0.413|22.50|56.0|44.8|0.0012|14.3|
|DRA127-1R0-R|1.00|0.772|19.22|40.0|32.0|0.0017|10.2|
|DRA127-1R5-R|1.50|1.27|15.32|31.1|24.9|0.0027|7.9|
|DRA127-2R2-R|2.20|1.92|12.52|25.5|20.4|0.0040|6.5|
|DRA127-3R3-R|3.30|3.51|9.59|18.7|14.93|0.0068|4.8|
|DRA127-4R7-R|4.70|4.58|8.14|16.5|13.18|0.0094|4.2|
|DRA127-6R8-R|6.80|6.72|7.32|13.3|10.67|0.012|3.4|
|DRA127-8R2-R|8.20|8.33|6.33|12.2|9.74|0.016|3.1|
|DRA127-100-R|10.0|9.63|6.02|11.2|8.96|0.017|2.9|
|DRA127-150-R|15.0|14.90|4.83|9.03|7.23|0.027|2.3|
|DRA127-220-R|22.0|21.47|3.98|7.57|6.05|0.040|1.9|
|DRA127-330-R|33.0|32.01|3.22|6.22|4.98|0.060|1.6|
|DRA127-470-R|47.0|47.91|2.62|5.09|4.07|0.091|1.3|
|DRA127-680-R|68.0|68.22|2.333|4.18|3.34|0.115|1.1|
|DRA127-820-R|82.0|83.91|2.008|3.84|3.07|0.155|1.0|
|DRA127-101-R|100|100.8|1.888|3.46|2.77|0.175|0.9|
|DRA127-151-R|150|151.2|1.524|2.83|2.26|0.269|0.7|
|DRA127-221-R|220|219.8|1.253|2.35|1.88|0.398|0.6|
|DRA127-331-R|330|328.3|1.011|1.93|1.54|0.612|0.5|
|DRA127-471-R|470|474.5|0.827|1.62|1.29|0.91|0.4|
|DRA127-681-R|680|676.6|0.736|1.33|1.06|1.15|0.3|
|DRA127-821-R|820|824.6|0.637|1.22|0.978|1.54|0.3|
|DRA127-102-R|1000|998.7|0.598|1.10|0.878|1.75|0.3|



- (1) Open Circuit Inductance test parameters: 100kHz, 0.25V, 0.0Adc, tolerance is ±20% 

- (2) Irms: DC current for an approximate ∆T of 40°C without core loss. Derating is necessary for AC currents. PCB layout, trace thickness and width, air-flow, and proximity of other heat generating components will affect the temperature rise. It is recommended that the temperature of the part not exceed 165°C under worst case operating conditions verified in the end application. 

- (3) Isat Amperes peak for approximately 30% rolloff (@25°C) 

- (5) DCR limits @ 25°C 

- (6) K-factor: Used to determine B p-p for core loss (see graph). B p-p = K*L*∆I, B p-p(mT), K: (K factor from table), L: (Inductance in µH), 

- ∆I (Peak to peak ripple current in Amps). 

- (7) Part Number Definition: DRAxxx-xxx-R 

- DRAxxx = Product code and size; -xxx = Inductance value in uH; R = decimal point; If no R is present, third character = # of zeros. 

- -R suffix = RoHS compliant 

(4) Isat Amperes peak for approximately 40% rolloff (@125°C) 

## **Mechanical Diagrams** 

## DRA73 Series 

**==> picture [270 x 80] intentionally omitted <==**

**----- Start of picture text -----**<br>
BOTTOM VIEW FRONT VIEW TOP VIEW<br>7.6 Max<br>###<br>7.6 Max 2 1<br>wwllyy R<br>2.00<br>3.55<br>1.5 Max<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
Dimensions in Millimeters.<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
RECOMMENDED PCB LAYOUT SCHEMATIC<br>1<br>2.50<br>3.25<br>2<br>8.50<br>### = Inductance value in uH. R = decimal point.<br>If no R is present third character = # of zeros<br>wwllyy = (date code) R = revision level<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
RECOMMENDED PCB LAYOUT<br>**----- End of picture text -----**<br>


**Magnetics Solutions For Automotive Applications** 

## **DRA Series High Power Density, High Efficiency, Shielded Inductors** 

## **Mechanical Diagrams** 

DRA74 Series 

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**----- Start of picture text -----**<br>
BOTTOM VIEW FRONT VIEW TOP VIEW<br>7.6 Max<br>###<br>7.6 Max 2 wwllyy R 1<br>2.00<br>4.35<br>Max<br>1.5<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
RECOMMENDED PCB LAYOUT SCHEMATIC<br>2.50 1<br>3.25<br>2<br>8.50<br>**----- End of picture text -----**<br>


## DRA124 Series 

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**----- Start of picture text -----**<br>
BOTTOM VIEW FRONT VIEW TOP VIEW<br>DRA124<br>5.00 12.50Max 2  ### 1<br>wwllyy   R<br>12.50 4.5<br>Max Max<br>2.50<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
RECOMMENDED PCB LAYOUT<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
3.85<br>1<br>5.5<br>2<br>13.8<br>**----- End of picture text -----**<br>


## DRA125 Series 

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**----- Start of picture text -----**<br>
BOTTOM VIEW FRONTVIEW TOP VIEW RECOMMENDED PCB LAYOUT SCHEMATIC<br>3.85<br>1<br>DRA125<br>12.50<br>5.00 Max 2 ### 1<br>wwllyy R 5.5<br>12.50 6.0 2<br>Max Max<br>2.50 13.8<br>DRA127 Series<br>BOTTOM VIEW FRONT VIEW TOP VIEW RECOMMENDED PCB LAYOUT SCHEMATIC<br>3.85<br>1<br>12.50 DRA127<br>5.00 Max 2 ### 1<br>wwllyy  R 5.5<br>12.50 8.0 2<br>Max Max<br>13.8<br>**----- End of picture text -----**<br>


**==> picture [259 x 85] intentionally omitted <==**

**----- Start of picture text -----**<br>
BOTTOM VIEW FRONT VIEW TOP VIEW<br>12.50 DRA127<br>5.00 Max 2 ### 1<br>wwllyy  R<br>12.50 8.0<br>Max Max<br>2.50<br>**----- End of picture text -----**<br>


Dimensions in Millimeters. 

### = Inductance value in uH. R = decimal point. If no R is present third character = # of zeros wwllyy = (date code) R = revision level 

**Magnetics Solutions For Automotive Applications** 

## **DRA Series High Power Density, High Efficiency, Shielded Inductors** 

## **Packaging Information** 

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**----- Start of picture text -----**<br>
DRA73 Series Ø1.50 +0.1/-0.0<br>2.00 ±0.1 Ø1.50 Min.<br>4.00 A 1.75±0.10<br>7.50±0.1 16.00<br>±0.3<br>Bo<br>A0= 7.90mm<br>B0= 7.90 mm Ko A<br>K0= 3.80mm Ao<br>SECTION A-A 12.00 Parts packaged on 13" Diameter reel,<br>User direction of feed 1,350 parts per reel.<br>DRA74 Series Ø1.50 +0.1/-0.0<br>2.00 ±0.1 Ø1.50 Min.<br>4.00 A 1.75±0.10<br>7.50±0.1 16.00<br>±0.3<br>Bo<br>A0= 7.90 mm<br>B0= 7.90 mm Ko A<br>K0= 4.70 mm Ao User direction of feed<br>SECTION A-A Parts packaged on 13" Diameter reel,<br>12.00 1,100 parts per reel.<br>DRA124 Series 1.5 dia<br>+0.1/-0.0 2.0 1.5 diamin A<br>1.75<br>11.5<br>24.0<br>B0 +/-0.3<br>A0= 13.00 mm<br>B0= 13.00mm<br>K0= 4.90 mm K0 A0 16.00 A<br>SECTION A-A<br>Parts packaged on 13" Diameter reel,<br>User direction of feed 750 parts per reel.<br>DRA125 Series 1.5 dia<br>+0.1/-0.0 2.0 1.5 diamin A 1.75<br>11.5<br>24.0<br>B0 +/-0.3<br>A0= 13.00 mm<br>B0= 13.00 mm<br>K0= 6.30 mm K0 A0 16.00 A<br>SECTION A-A<br>Parts packaged on 13" Diameter reel,<br>User direction of feed 600 parts per reel.<br>DRA127 Series 1.5 dia<br>+0.1/-0.0 2.0 1.5 diamin A 1.75<br>11.5<br>24.0<br>B0 +/-0.3<br>A0= 13.00mm<br>B0= 13.00 mm<br>K0= 8.30mm K0 A0 20.00 A<br>SECTION A-A<br>User direction of feed<br>DRA73 ###<br>DRA74 ###<br>R<br>DRA124-### wwllyy<br>R<br>DRA125-### wwllyy<br>R<br>DRA127-### wwllyy<br>**----- End of picture text -----**<br>


Parts packaged on 13" Diameter reel, 350 parts per reel. 

Dimensions are in millimeters. 

**Magnetics Solutions For Automotive Applications** 

## **DRA Series High Power Density, High Efficiency, Shielded Inductors** 

## **Temperature Rise vs.Watt Loss** 

DRA 73 series 

DRA 74 series 

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**----- Start of picture text -----**<br>
70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>0 0.04 0.08 0.12 0.16 0.2 0.24 0.28 0.32 0.36 0.4 0.44 0.48 0.52 0.56 0.6 0.64 0.68<br>To t a l  L o ss (W )<br>Temp. Rise(°C)<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2<br>Total Loss (W)<br>Temp. Rise(°C)<br>**----- End of picture text -----**<br>


DRA 124 series 

DRA 125 series 

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**----- Start of picture text -----**<br>
70 70<br>60 60<br>50 50<br>40 40<br>30 30<br>20 20<br>10 10<br>0 0<br>0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3<br>To t a l  L o ss (W ) Total Loss (W)<br>Temp. Rise(°C) Temp. Rise(°C)<br>**----- End of picture text -----**<br>


DRA 127 series 

**==> picture [235 x 141] intentionally omitted <==**

**----- Start of picture text -----**<br>
80<br>70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5<br>Total Loss (W)<br>Temp. Rise(°C)<br>**----- End of picture text -----**<br>


**Magnetics Solutions For Automotive Applications** 

## **DRA Series High Power Density, High Efficiency, Shielded Inductors** 

## **Inductance Characteristics** 

OCL vs Isat/DRA 73 series 

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**----- Start of picture text -----**<br>
120 %<br>110 %<br>100 %<br>90%<br>80%<br>70% -40°<br>60%<br>25°<br>50%<br>40%<br>85°<br>30%<br>20% 125°<br>10%<br>0%<br>0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100 % 110 % 120 % 130 % 140 %<br>% of Isat<br>L<br>C<br>ofO<br>%<br>**----- End of picture text -----**<br>


OCL vs Isat/DRA 74 series 

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**----- Start of picture text -----**<br>
120 %<br>110 %<br>100 %<br>90%<br>80%<br>70% 40°<br>60%<br>25°<br>50%<br>40%<br>30% 85°<br>20% 125°<br>10%<br>0%<br>0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100 % 110% 120 %<br>% of Isat<br>CL<br>ofO<br>%<br>**----- End of picture text -----**<br>


OCL vs Isat/DRA 125 series 

**==> picture [507 x 155] intentionally omitted <==**

**----- Start of picture text -----**<br>
OCL vs Isat/DRA 124 series<br>120 % 120 %<br>110 % 110 %<br>100 % 100 %<br>90% 90%<br>80% 80%<br>70% 70%<br>-40°<br>-40°<br>60% 60%<br>50% 50% 25°<br>25°<br>40% 40%<br>30% 85° 30% 85°<br>125°<br>20% 20%<br>125°<br>10% 10%<br>0% 0%<br>0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100 % 110 % 120 % 130 % 140 % 150 % 160 % 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100 % 110 % 120% 130% 140 %<br>% of Isat % of Isat<br>CL CL<br>ofO ofO<br>% %<br>**----- End of picture text -----**<br>


OCL vs Isat/DRA 127 series 

**==> picture [237 x 143] intentionally omitted <==**

**----- Start of picture text -----**<br>
120 %<br>110 %<br>100 %<br>90% -40°<br>80% 25°<br>70%<br>60% 85°<br>50%<br>40% 125°<br>30%<br>20%<br>10%<br>0%<br>60% 70% 80% 90% 100 % 110 % 120 % 130 % 140 % 150 % 160 % 170 % 180 % 190 % 200 %<br>% of Isat<br>CL<br>ofO<br>%<br>**----- End of picture text -----**<br>


**Magnetics Solutions For Automotive Applications** 

## **DRA Series High Power Density, High Efficiency, Shielded Inductors** 

## **Inductance Characteristics** 

**==> picture [442 x 346] intentionally omitted <==**

**----- Start of picture text -----**<br>
DRA 73 series DRA 74 series<br>100 100<br>1MHz 1MHz<br>10 500kHz 10 500kHz<br>300kHz 300kHz<br>1 200kHz 200kHz<br>100kHz 1<br>100kHz<br>50kHz<br>0.1 50kHz<br>0.1<br>0.01<br>0.01<br>0.001<br>0.0001 0.001<br>0.00001 0.0001<br>1 10 100 100 1 10 100 1000<br>Bp-p (mT) Bp-p (mT)<br>DRA 124 series DRA 125 series<br>1000 1000<br>1MHz 1 MHz<br>100 500kHz 100 500kHz<br>300kHz 300kHz<br>10 200kHz 10 200kHz<br>100kHz 100kHz<br>1 50kHz 1 50kHz<br>0.1 0.1<br>0.01 0.01<br>0.001 0.001<br>0.0001 0.0001<br>1 10 100 1000 1 10 100 1000<br>Bp-p (mT) Bp-p (mT)<br>DRA 127 series<br>Core Loss (W)<br>Core Loss (W)<br>Core Loss (W) Core Loss (W)<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
1000<br>1MHz<br>100 500kHz<br>300kHz<br>10 200kHz<br>100kHz<br>50kHz<br>1<br>0.1<br>0.01<br>0.001<br>1 10 100 1000<br>Bp-p (mT)<br>Core Loss (W)<br>**----- End of picture text -----**<br>


PM-4319  3/07 

## **Visit us on the Web at www.cooperbussmann.com** 

## 1225 Broken Sound Pkwy. Suite F   Boca Raton, FL 33487 

© Cooper Electronic Technologies 2007 Tel: +1-561-998-4100  Toll Free: +1-888-414-2645  Fax: +1-561-241-6640 

This bulletin is intended to present product design solutions and technical information that will help the end user with design applications.  Cooper Electronic Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Electronic Technologies also reserves the right to change or update, without notice, any technical information contained in this bulletin.  Once a product has been selected, it should be tested by the user in all possible applications. 

Life Support Policy: Cooper Electronic Technologies does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 



## Links

- [View this product on Novapart](https://novapart.co/products/DRA127-471-R/power-inductor-smd-470-h-827-ma-shielded-162-a-dra)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/eaton-coiltronics/dra127-471-r/inductor-470uh-0-827a-shielded/dp/2145208RL)
---

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