# Schottky Rectifier, 45 V, 3 A, Single, DO-221AC, 2 Pins, 570 mV

![Product image](https://novapart.co/image/farnell:2629698/)

**URL**: https://novapart.co/products/STPS3L45AF/schottky-rectifier-45-v-3-a-single-do-221ac-2-pins
**SKU**: STPS3L45AF
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Schottky Diodes || Schottky Rectifier Diodes
**Price**: €0.0860
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| No. Of Pins | 2Pins |
| Diode Mounting | Surface Mount |
| Diode Case Style | DO-221AC |
| Diode Configuration | Single |
| Forward Voltage Max | 570mV |
| Forward Surge Current | 75A |
| Average Forward Current | 3A |
| Operating Temperature Max | 150°C |
| Repetitive Peak Reverse Voltage | 45V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2629698/)

## **STPS3L45AF** 

## Power Schottky rectifier 

**Datasheet** - **production data** 

## **Description** 

**==> picture [110 x 88] intentionally omitted <==**

**----- Start of picture text -----**<br>
A<br>K<br>SMAflat (non exposed pad)<br>STPS3L45AF<br>**----- End of picture text -----**<br>


## **Features** 

- Negligible switching losses 

- Low thermal resistance 

- Low forward voltage drop 

Schottky rectifier suited for switched mode power supplies and high frequency DC to DC converters. Packaged in a tiny SMAflat package, this device has been optimized for use in compact chargers. 

## **Figure 1. Electrical characteristics[(a)]** 

**==> picture [170 x 155] intentionally omitted <==**

**----- Start of picture text -----**<br>
I<br>V<br>"Forward"<br>I<br>2 x IO X<br>IF<br>IO X<br>VRRM<br>VAR VR<br>V<br>IR<br>VTo VF(Io) VF VF(2xIo)<br>"Reverse"<br>IAR<br>**----- End of picture text -----**<br>


- Avalanche capability specified 

**Table 1. Device summary** 

|**Symbol**|**value**|
|---|---|
|IF(AV)|3 A|
|VRRM|45 V|
|Tj(max)|150 °C|
|VF(typ)|0.462 V|



- a. VARM and IARM must respect the reverse safe operating area defined in _Figure 11_ . VAR and IAR are pulse measurements (tp < 10 µs). VR, IR, VRRM and VF, are static characteristics 

February 2014 

DocID024949 Rev 2 

1/8 

This is information on a product in full production. 

_www.st.com_ 

**Characteristics** 

**STPS3L45AF** 

## **1 Characteristics** 

**Table 2. Absolute ratings (limiting values at 25 °C, unless otherwise specified)** 

|**Symbol**|**Parameter**|**Test conditions**|**Value**|**Unit**|
|---|---|---|---|---|
|VRRM|Repetitive peak reverse voltage||45|V|
|IF(AV)|Average forward current|TL= 120 °Cδ= 0.5|3|A|
|IFSM|Surge non repetitive forward<br>current|tp= 10 ms sinusoidal|75|A|
|PARM<br>(1)|Repetitive peak avalanche power|tp= 10 µs   Tj = 125 °C|70|W|
|VARM<br>(2)|Maximum repetitive peak<br>avalanche voltage|tp <10 µs, Tj<125 °C, IAR <1.4 A|50|V|
|VASM<br>(2)|Maximum single pulse peak<br>avalanche voltage|tp <10 µs, Tj<125 °C, IAR <1.4 A|50|V|
|Tstg|Storage temperature range||-65 to + 175|°C|
|Tj|Operating junction temperature(3)||150|°C|



1. For pulse time duration deratings, please refer to _Figure 4_ . More details regarding the avalanche energy measurements and diode validation in the avalanche are provided in the STMicroelectronics Application notes AN1768, “Admissible avalanche power of Schottky diodes” and AN2025, “Converter improvement using Schottky rectifier avalanche specification”. 

2. Refer to _Figure 11_ 

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

**Table 3. Thermal resistance** 

||**Table 3. Thermal resistance**|||
|---|---|---|---|
|**Symbol**|**Parameter**|**Value**|**Unit**|
|Rth(j-l)|Thermal resistance junction to lead|15|°C/W|



**Table 4. Static electrical characteristics** 

|**Symbol**|**Parameter**|**Test conditions**|**Test conditions**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|
|IR<br>(1)|Reverse leakage current|Tj= 25 °C|VR= VRRM|80|300|µA|
|||Tj= 125 °C||66|135|mA|
|VF<br>(1)|Forward voltage drop|Tj= 25 °C|IF= 3 A|0.462|0.57|V|
|||Tj= 125 °C||0.41|0.51||



1. Pulse test: tp = 380 µs, δ < 2% 

To evaluate the conduction losses use the following equation: 

P = 0.36 x IF(AV) + 0.05 IF2(RMS) 

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**STPS3L45AF** 

**Characteristics** 

**Figure 2. Average forward power dissipation versus average forward current** 

**Figure 3. Average forward current versus ambient temperature (** δ **= 0.5)** 

**==> picture [435 x 132] intentionally omitted <==**

**----- Start of picture text -----**<br>
2.4 PF(AV)(W) 3.5 IF(AV)(A)<br>2.0 eee = 0.05 = 0.1 = 0.2 = 0.5 = 1 |  Eee 3.0 R th(j-a)  = R th(j-l)<br>Kits pe 2.5 PIE<br>1.6 LIZ AS i a<br>2.0<br>1.2 A[| LerA | \<br>SCY Ae) 1.5 eee<br>0.8<br>ALLE 1.0 a<br>Leet T T a<br>0.4 ygt t t  t o g 0.5 Ag jeer °<br>IF(AV)(A) =tp/T tp =tp/T tp Tamb( C)<br>0.0 Pl 0.0 ee<br>LAT | | YT = ee<br>0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 25 50 75 100 125 150<br>**----- End of picture text -----**<br>


**Figure 4. Normalized avalanche power derating versus pulse duration** 

**Figure 5. Relative variation of thermal impedance junction to lead versus pulse duration** 

**==> picture [426 x 139] intentionally omitted <==**

**----- Start of picture text -----**<br>
1 Parm(tp)/Parm(10µs) Zth(j- )/Rth(j- )l l<br>1.0<br>0.9 |<br>[oT TTAA<br>0.8 [of TTPy<br>a<br>0,1 0.7 [otLt TT TTTPa|<br>Ee 0.6 LTeo TT PPA<br>[oT TTTAT<br>0.5 [ot TT<br>LT TT PP<br>0.4 [ot TT TTA<br>0,01 0.3 [|aA TTTTT PTTTTATTTTPT<br>0.2 Ee Single pulse<br>0.1 Fya a  rea SAE EEEoe CTT |<br>0,001 tP(µs) 0.0 CeeeT TTT TTT PT tp(s)<br>1.E-04 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01<br>1 10 100 1000<br>**----- End of picture text -----**<br>


**Figure 6. Reverse leakage current versus reverse voltage applied (typical values)** 

**Figure 7. Junction capacitance versus reverse voltage applied (typical values)** 

**==> picture [436 x 130] intentionally omitted <==**

**----- Start of picture text -----**<br>
IR(mA) C(pF)<br>1.E+03 1000<br>1.E+02 === Tj = 125°CT a j = 150°C ———— a V OSC F = 1MHzTj = 25 = 30mV° CRMS<br>1.E+01<br>Tj = 100°C<br>a= eee HTH<br>1.E+00 ===seeemS=ss===—= T j  = 75°C 100 |re<br>1.E-01 ae Tj = 50°C —— ee SSS ee<br>er Tj = 25°CTj = 25°C a a<br>1.E-02<br>=s0===——eeeneeeeee i<br>VR(V)<br>1.E-03 VR(V) 10<br>0 Seeeeeeeeeeeeeeeee 5 10 15 20 25 30 35 40 45 1 eel 10 100<br>**----- End of picture text -----**<br>


DocID024949 Rev 2 

3/8 

**Characteristics** 

**STPS3L45AF** 

**Figure 8. Forward voltage drop versus forward current (typical values)** 

**Figure 9. Forward voltage drop versus forward current (maximum values)** 

**==> picture [463 x 145] intentionally omitted <==**

**----- Start of picture text -----**<br>
100.0 IF(A) 100.0 IF(A)<br>10.0 Tj = 125°C 10.0 Tj = 125°C<br>1.0 T j = 25°C 1.0 T j = 25°C<br>0.1 VF(V) 0.1 VF(V)<br>0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8<br>**----- End of picture text -----**<br>


**Figure 10. Thermal resistance junction to ambient versus copper surface under each lead (typical values)** 

**Figure 11. Reverse safe operating area (tp < 10 µs and Tj < 125 °C)** 

**==> picture [463 x 145] intentionally omitted <==**

**----- Start of picture text -----**<br>
Rth(j-a)(°C/W)<br>200<br>Iarm (V)<br>Epoxy printed board FR4, copper thickness Cu = 35 µm 1,6<br>150 1,4<br>1,2<br>100<br>1,0<br>50 0,8<br>Varm (V)<br>SCU(cm²) 0,6<br>0 45 55 65 75 85 95<br>0 1 2 3 4 5<br>**----- End of picture text -----**<br>


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**Package information** 

## **2 Package information** 

- Epoxy meets UL94,V0 

- Lead-free packages 

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. 

**Figure 12. SMAflat (non-exposed pad) dimension definitions** 

**==> picture [368 x 186] intentionally omitted <==**

**----- Start of picture text -----**<br>
L2 2x<br>L 2x<br>E E1<br>b<br>L1 2x<br>A<br>D c<br>**----- End of picture text -----**<br>


**Table 5. SMAflat (non-exposed pad) dimension values** 

||**Table 5. SMAflat(non-exposedpad) dimension values**|**Table 5. SMAflat(non-exposedpad) dimension values**|**Table 5. SMAflat(non-exposedpad) dimension values**|**Table 5. SMAflat(non-exposedpad) dimension values**|**Table 5. SMAflat(non-exposedpad) dimension values**|**Table 5. SMAflat(non-exposedpad) dimension values**|
|---|---|---|---|---|---|---|
|**Ref.**|**Dimensions**||||||
||**Millimeters**|||**Inches**|||
||**Min.**|**Typ.**|**Max.**|**Min.**|**Typ.**|**Max.**|
|A|0.90||1.10|0.035||0.043|
|b|1.25||1.65|0.049||0.065|
|c|0.15||0.40|0.006||0.016|
|D|2.25||2.95|0.088||0.116|
|E|4.80||5.60|0.189||0.220|
|E1|3.95||4.60|0.155||0.181|
|L|0.75||1.50|0.029||0.059|
|L1||0.50|||0.020||
|L2||0.50|||0.020||



DocID024949 Rev 2 

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**STPS3L45AF** 

**Package information** 

**Figure 13. SMAflat (non-exposed pad) footprint dimensions in mm (inches)** 

**==> picture [290 x 194] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.20 3.44 1.20<br>(0.047) (0.136) (0.047)<br>2.07<br>(0.082)<br>5.84<br>(0.230)<br>**----- End of picture text -----**<br>


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**Ordering information** 

## **3** 

## **Ordering information** 

**Table 6. Ordering information** 

|**Order code**|**Marking**|**Package**|**Weight**|**Base qty**|**Delivery mode**|
|---|---|---|---|---|---|
|STPS3L45AF|F3L45|SMAflat (non-exposed pad)|0.035 g|10000|Tape and reel|



## **4 Revision history** 

**Table 7. Document revision history** 

|||**Table 7. Document revision history**|
|---|---|---|
|**Date**|**Revision**|**Description of changes**|
|08-Jul-2013|1|First release.|
|03-Feb-2014|2|Updated_Table 5_,_Figure 12_and_Figure 13_.|



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**STPS3L45AF** 

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