# Standard Recovery Diode, 45 V, 20 A, Single, 550 mV, 180 A

![Product image](https://novapart.co/image/farnell:3366904/)

**URL**: https://novapart.co/products/FERD2045SB-TR/standard-recovery-diode-45-v-20-a-single-550-mv
**SKU**: FERD2045SB-TR
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Standard Recovery Rectifier Diodes
**Price**: €0.2170
**Stock**: 25+
**Lead Time**: 120 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3Pins |
| Product Range | - |
| Qualification | - |
| Diode Case Style | TO-252 (DPAK) |
| Diode Configuration | Single |
| Forward Voltage Max | 550mV |
| Forward Surge Current | 180A |
| Reverse Recovery Time | - |
| Average Forward Current | 20A |
| Operating Temperature Max | 150°C |
| Repetitive Peak Reverse Voltage | 45V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3366904/)

## **FERD2045S** 

## 45 V field-effect rectifier diode 

Datasheet - production data 

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## **Features** 

- ST advanced rectifier process 

- Stable leakage current over reverse voltage 

- Low forward voltage drop 

## **Description** 

This single rectifier is based on a proprietary technology that achieves the best in class VF/IR trade-off for a given silicon surface. 

Therefore it can advantageously replace 45 V low voltage Schottky diodes. 

Packaged in DPAK, this device is intended to be used in rectification and freewheeling operations in power supplies. 

**Table 1: Device summary** 

|**Symbol**|**Value**|
|---|---|
|IF(AV)|20 A|
|VRRM|45 V|
|VF(typ.)|0.29 V|
|Tj(max.)|150 °C|



- High frequency operation 

- ECOPACK[®] 2 compliant component for DPAK on demand 

January 2018 

DocID031305 Rev 1 

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This is information on a product in full production. 

_www.st.com_ 

**Characteristics** 

**FERD2045S** 

## **1 Characteristics** 

**Table 2: Absolute ratings (limiting values at 25 °C, unless otherwise specified, anode terminals short-circuited)** 

|**Symbol**|**Parameter**|**Parameter**|**Value**|**Unit**|
|---|---|---|---|---|
|VRRM|Repetitivepeak reverse voltage||45|V|
|IF(RMS)|Forward rms current||40|A|
|IF(AV)|Average forward current δ = 0.5, square<br>wave|TC= 125 °C|20|A|
|IFSM|Surge non repetitive forward current|tp= 10 ms sinusoidal|180|A|
|Tstg|Storage temperature range||-65 to +175|°C|
|Tj|Maximum operating junction temperature range_(1)_||-40 to +150|°C|



## **Notes:** 

- (1)(dPtot/dTj) < (1/Rth(j-a)) condition to avoid thermal runaway for a diode on its own heatsink. 

**Table 3: Thermal resistance parameters** 

|**Symbol**|**Parameter**|**Value**|**Unit**|
|---|---|---|---|
|Rth(j-c)|Junction to case|1.4|°C/W|



**Table 4: Static electrical characteristics (anode terminals short circuited)** 

|**Symbol**|**Parameter**|**Test conditions**|**Test conditions**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|---|
|IR_(1)_|Reverse leakage current|Tj= 25 °C|VR= 35 V|-|100|300|µA|
|||Tj= 125 °C||-|12|24|mA|
|||Tj= 25 °C|VR= VRRM|-|200|600|µA|
|||Tj= 125 °C||-|18|40|mA|
|VF_(2)_|Forward voltage drop|Tj= 25 °C|IF= 5 A|-|0.35||V|
|||Tj= 125 °C||-|0.29|||
|||Tj= 25 °C|IF= 10 A|-|0.41|0.45||
|||Tj= 125 °C||-|0.38|0.42||
|||Tj= 25 °C|IF= 20 A|-|0.51|0.55||
|||Tj= 125 °C||-|0.52|0.57||



## **Notes:** 

- (1)Pulse test: tp = 5 ms, δ < 2% 

- (2)Pulse test: tp = 380 µs, δ < 2% 

To evaluate the maximum conduction losses use the following equation: 

P = 0.27 x IF(AV) + 0.015 x IF[2] (RMS) 

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**Characteristics** 

## **1.1 Characteristics (curves)** 

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**----- Start of picture text -----**<br>
Figure 1: Average forward current versus ambient  Figure 2: Relative variation of thermal impedance<br>temperature (δ = 0.5)  junction to case versus pulse duration<br>Zth(j-c) /Rth(j-c)<br>IF(AV)(A) 1.0<br>30<br>0.9<br>Rth(j-a) = Rth(j-c)<br>25 0.8<br>0.7<br>20<br>0.6<br>15 0.5<br>10 0.4 Single pulse<br>T 0.3<br>5<br>0.2<br>δ [=tp/T] tp T amb (°C)<br>0 0 25 50 75 100 125 150 0.1 t p (s)<br>0.0<br>1.E-04 1.E-03 1.E-02 1.E-01 1.E+00<br>**----- End of picture text -----**<br>


**==> picture [452 x 177] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 3: Reverse leakage current versus reverse  Figure 4: Junction capacitance versus reverse<br>voltage applied (typical values)   voltage applied (typical values)<br>C(pF)<br>10000<br>1.E+02 IR(mA) VoscF = 1 MHz= 30 mVRMS<br>Tj = 150 °C T j  = 25 °C<br>1.E+01 Tj = 125 °C<br>Tj = 100 °C<br>1.E+00 Tj = 75 °C 1000<br>Tj = 50 °C<br>1.E-01 T j = 25 °C<br>VR(V)<br>1.E-02 VR(V)<br>0 5 10 15 20 25 30 35 40 45 100<br>1 10 100<br>**----- End of picture text -----**<br>


**Figure 5: Forward voltage drop versus forward Figure 6: Forward voltage drop versus forward current (typical values) current (typical values)** 

**==> picture [104 x 64] intentionally omitted <==**

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**Characteristics** 

**FERD2045S** 

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**----- Start of picture text -----**<br>
Figure 7: Thermal resistance junction to ambient versus copper surface under tab for DPAK<br>Rth(j-a) (°C/W)<br>100<br>DPAK<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20 Epoxy printed board FR4, e Cu = 35 µm<br>10<br>SCu(cm²)<br>0<br>0 5 10 15 20 25 30 35 40<br>**----- End of picture text -----**<br>


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**Package** information 

## **2 Package information** 

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK[®] packages, depending on their level of environmental compliance. ECOPACK[®] specifications, grade definitions and product status are available at: _**www.st.com**_ . ECOPACK[®] is an ST trademark. 

- Cooling method: by conduction (C) 

- Epoxy meets UL 94,V0 

## **2.1 DPAK package information** 

**Figure 8: DPAK package outline** 

This package drawing may slightly differ from the physical package. However, all the specified dimensions are guaranteed. 

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**Package** information 

**Table 5: DPAK package mechanical data** 

|**Ref.**<br>~~ee~~|**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|
|---|---|---|---|---|
||**Millimeters**||**Inches**||
||**Min.**<br>~~es~~|**Max.**|**Min.**|**Max.**|
|A<br>~~ee~~<br>~~ee~~|2.18<br>~~es~~<br>~~es ee~~|2.40<br>~~ee~~|0.085|0.094|
|A1<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.90<br>~~es~~<br>~~es ee~~<br>~~es~~|1.10<br>~~ee~~<br>~~es~~|0.035<br>~~es~~|0.043<br>~~es~~|
|A2<br>~~ee ~~<br>~~ee~~<br>~~ee~~|0.03<br> ~~es ee~~<br>~~es~~<br>~~es ee~~|0.23<br>~~ee~~<br>~~es~~<br>~~ee~~|0.001<br>~~es~~|0.009<br>~~es~~|
|b<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.64<br>~~es~~<br>~~es ee~~<br>~~es~~|0.90<br>~~es~~<br>~~ee~~<br>~~ee~~|0.025<br>~~es~~|0.035<br>~~es~~|
|b4<br>~~ee ~~<br>~~ee~~<br>~~ee~~|4.95<br> ~~es ee~~<br>~~es~~<br>~~es~~|5.46<br>~~ee~~<br>~~ee~~<br>~~es~~|0.194<br>~~es~~|0.215<br>~~es~~|
|c<br>~~ee ~~<br>~~ee~~<br>~~ee~~|0.46<br> ~~es~~<br>~~es~~<br>~~es ee~~|0.61<br>~~ee~~<br>~~es~~<br>~~ee~~|0.018<br>~~es~~|0.024<br>~~es~~|
|c2<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.46<br>~~es~~<br>~~es ee~~<br>~~es~~|0.60<br>~~es~~<br>~~ee~~|0.018<br>~~es~~|0.023<br>~~es~~|
|D<br>~~ee ~~<br>~~ee~~<br>~~es~~|5.97<br> ~~es ee~~<br>~~es~~<br>~~ee~~|6.22<br>~~ee~~<br>~~GG~~|0.235<br>~~GG~~|0.244<br>~~GG~~|
|D1<br>~~ee~~<br>~~es~~<br>~~ee~~|4.95<br>~~es~~<br>~~ee~~<br>~~es~~|5.60<br>~~GG~~<br>~~es~~|0.194<br>~~GG~~<br>~~es~~|0.220<br>~~GG~~<br>~~es~~|
|E<br>~~es~~<br>~~ee~~<br>~~es~~|6.35<br>~~ee~~<br>~~es~~<br>~~ee~~|6.73<br>~~GG~~<br>~~es~~|0.250<br>~~GG~~<br>~~es~~|0.265<br>~~GG~~<br>~~es~~|
|E1<br>~~ee~~<br>~~es~~<br>~~es~~|4.32<br>~~es~~<br>~~ee~~|5.50<br>~~es~~|0.170<br>~~es~~|0.216<br>~~es~~|
|e<br>~~es ~~<br>~~es~~<br>~~ee es~~|2.286 typ.<br> ~~ee~~<br>~~es~~||0.090 typ.||
|e1<br>~~es~~<br>~~ee es~~<br>~~es~~|4.40<br>~~es~~<br>~~ee~~|4.70<br>~~GG~~|0.173<br>~~GG~~|0.185<br>~~GG~~|
|H<br>~~ee es~~<br>~~es~~<br>~~ee~~|9.35<br>~~es~~<br>~~ee~~<br>~~es~~|10.40<br>~~GG~~<br>~~es~~|0.368<br>~~GG~~<br>~~es~~|0.409<br>~~GG~~<br>~~es~~|
|L<br>~~es~~<br>~~ee~~<br>~~es~~|1.0<br>~~ee~~<br>~~es~~<br>~~ee~~|1.78<br>~~GG~~<br>~~es~~<br>~~GG~~|0.039<br>~~GG~~<br>~~es~~<br>~~GG~~|0.070<br>~~GG~~<br>~~es~~<br>~~GG~~|
|L2<br>~~ee~~<br>~~es~~<br>~~es~~|~~es~~<br>~~ee~~<br>~~ee~~|1.27<br>~~es~~<br>~~GG~~<br>~~GG~~|~~es~~<br>~~GG~~<br>~~GG~~|0.050<br>~~es~~<br>~~GG~~<br>~~GG~~|
|L4<br>~~es~~<br>~~es~~<br>~~ee es~~|0.60<br>~~ee~~<br>~~ee~~<br>~~es~~|1.02<br>~~GG~~<br>~~GG~~|0.023<br>~~GG~~<br>~~GG~~|0.040<br>~~GG~~<br>~~GG~~|
|V2<br>~~es~~<br>~~ee es~~|-8°<br>~~ee~~<br>~~es~~|+8°<br>~~GG~~|-8°<br>~~GG~~|+8°<br>~~GG~~|



**Figure 9: DPAK recommended footprint (dimensions in mm)** 

~~©~~ 6/8 DocID031305 Rev 1 

**FERD2045S** 

**Ordering** information 

## **3 Ordering information** 

**Table 6: Ordering information** 

|**Order code**|**Marking**|**Package**|**Weight**|**Base qty.**|**Delivery mode**|
|---|---|---|---|---|---|
|FERD2045SB-TR|FERD 2045|DPAK|0.32g|2500|Tape and reel|



## **4 Revision history** 

**Table 7: Document revision history** 

|**Date**|**Revision**|**Changes**|
|---|---|---|
|15-Jan-2018|1|Initial release.|



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## **IMPORTANT NOTICE – PLEASE READ CAREFULLY** 

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. 

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. 

No license, express or implied, to any intellectual property right is granted by ST herein. 

Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. 

ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. 

Information in this document supersedes and replaces information previously supplied in any prior versions of this document. 

- © 2018 STMicroelectronics – All rights reserved 

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## Links

- [View this product on Novapart](https://novapart.co/products/FERD2045SB-TR/standard-recovery-diode-45-v-20-a-single-550-mv)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/stmicroelectronics/ferd2045sb-tr/diode-single-45v-20a-to-252/dp/3366904)
---

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