# Schottky Rectifier, 40 V, 1 A, Single, SOD-123FL, 2 Pins, 630 mV

![Product image](https://novapart.co/image/farnell:2723342/)

**URL**: https://novapart.co/products/STPS1L40ZF/schottky-rectifier-40-v-1-a-single-sod-123fl-2
**SKU**: STPS1L40ZF
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Schottky Diodes || Schottky Rectifier Diodes
**Price**: €0.0810
**Stock**: 50+
**Lead Time**: 125 days (indicative)

## Description

Repetitive Reverse Voltage Vrrm Max:40V; Forward Current If(AV):1A; Diode Configuration:Single; Diode Case Style:SOD-123FL; No. of Pins:2Pins; Forward Voltage VF Max:630mV; Forward

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 2Pins |
| Product Range | STPS1L40 |
| Qualification | - |
| Diode Mounting | Surface Mount |
| Diode Case Style | SOD-123FL |
| Diode Configuration | Single |
| Forward Voltage Max | 630mV |
| Forward Surge Current | 50A |
| Average Forward Current | 1A |
| Operating Temperature Max | 175°C |
| Repetitive Peak Reverse Voltage | 40V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2723342/)

**STPS1L40** 

Datasheet 

## 40 V, 1 A low drop power Schottky rectifier 

## **Features** 

- Very small conduction losses 

- Negligible switching losses 

- Low forward voltage drop 

- Surface mount miniature packages 

- Avalanche rated 

- ECOPACK2 compliant 

## **Applications** 

- Reverse polarity protection 

- Set-top box power supply 

- TV power supply 

- Battery charger 

## **Description** 

Single chip Schottky rectifiers suited to switched mode power supplies and high frequency DC to DC converters. 

Packaged in SMA, SMA Flat Notch, SMB and SOD123Flat, the STPS1L40 is ideal for use in surface mounting and used in low voltage, high frequency inverters, freewheeling and polarity protection applications. 

## **Product status** 

STPS1L40 

|**Product summary**|**Product summary**|
|---|---|
|**Symbol**|**Value**|
|**IF(AV)**|1 A|
|**VRRM**|40 V|
|**T j(max.)**|175 °C|
|**VF(typ.)**|0.37 V|



**DS1244** - **Rev 9** - **September 2019** For further information contact your local STMicroelectronics sales office. 

www.st.com 

**STPS1L40 Characteristics** 

**1** 

## **Characteristics** 

**Table 1. Absolute ratings (limiting values at 25 °C, unless otherwise specified)** 

|**Symbol**|**Parameter**|**Parameter**|**Parameter**|**Value**|**Unit**|
|---|---|---|---|---|---|
|VRRM|Repetitive peak reverse voltage|||40|V|
|IF(RMS)|Forward rms current|SMA/SMB||8|A|
|IF(AV)|Average forward current δ = 0.5, square wave|SMA/SMB|TL= 155 °C|1|A|
|||SMA Flat Notch|TL= 160 °C|||
|||SOD123Flat|TL= 160 °C|||
|IFSM|Surge non repetitive forward current|SMA/SMB|tp= 10 ms sinusoidal|60|A|
|||SMA Flat Notch||60||
|||SOD123Flat||50||
|PARM|Repetitive peak avalanche power||tp= 10 µs, Tj= 125 °C|65|W|
|Tstg|Storage temperature range|||-65 to +175|°C|
|Tj|Operating junction temperature(1)|||+175|°C|



_1. (dPtot/dTj) < (1/Rth(j-a)) condition to avoid thermal runaway for a diode on its own heatsink._ 

**Table 2. Thermal resistance parameter** 

|**Symbol**|**Parameter**|**Parameter**|**Max. value**|**Unit**|
|---|---|---|---|---|
|Rth(j-l)|Junction to lead|SMA<br>SMA Flat Notch<br>SMB<br>SOD123Flat|30|°C/W|
||||20||
||||25||
||||20||



For more information, please refer to the following application note : 

- AN5088 : Rectifiers thermal management, handling and mounting recommendations 

**Table 3. Static electrical characteristics** 

|**Symbol**|**Parameter**|**Test conditions**|**Test conditions**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|---|
|IR(1)|Reverse leakage current|Tj= 25 °C|VR= VRRM|-||35|µA|
|||Tj= 125 °C||-|6|10|mA|
|VF(1)|Forward voltage drop|Tj= 25 °C|IF= 1 A|-||0.50|V|
|||Tj= 125 °C||-|0.37|0.42||
|||Tj= 25 °C|IF= 2 A|-||0.63||
|||Tj= 125 °C||-|0.50|0.61||



_1. Pulse test: tp = 380 µs, δ < 2%_ 

To evaluate the conduction losses, use the following equation: P = 0.23 x IF(AV) + 0.19 x IF[2] (RMS) 

**DS1244** - **Rev 9** 

**page 2/16** 

**STPS1L40 Characteristics (curves)** 

For more information, please refer to the following application notes related to the power losses : 

- AN604: Calculation of conduction losses in a power rectifier 

- AN4021: Calculation of reverse losses on a power diode 

## **1.1 Characteristics (curves)** 

**Figure 1. Average forward power dissipation versus average forward current** 

**==> picture [216 x 133] intentionally omitted <==**

**----- Start of picture text -----**<br>
0.8 PF(AV)(W)<br>0.7 δ = 0.05 δ = 0.1 δ = 0.2 δ = 0.5 δ = 1<br>0.6<br>0.5<br>0.4<br>0.3<br>0.2<br>T<br>0.1<br>IF(AV)(A) δ [= tp/T] tp<br>0.0<br>0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6<br>**----- End of picture text -----**<br>


**Figure 2. Average forward current versus ambient temperature (SMA, δ = 0.5)** 

**==> picture [218 x 130] intentionally omitted <==**

**----- Start of picture text -----**<br>
4.0 IF(AV)(A)<br>SMA<br>3.5 R th(j-a)  = R th(j-l)<br>3.0<br>2.5<br>2.0<br>1.5<br>1.0 T<br>0.5 δ [= tp/T] tp T amb (°C)<br>0.0<br>0 25 50 75 100 125 150 175<br>**----- End of picture text -----**<br>


**==> picture [513 x 205] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 3. Average forward current versus ambient Figure 4. Average forward current versus ambient<br>temperature (SMB, δ = 0.5) temperature (SOD123Flat, SMA Flat Notch, δ = 0.5)<br>4.0 IF(AV)(A) 5 IF(AV)(A)<br>3.5 R th(j-a)  = R th(j-l) SMB Rth(j-a) = Rth(j-l) SMA Flat Notch SOD123Flat<br>4<br>3.0<br>2.5<br>3<br>2.0<br>2<br>1.5<br>1.0 T T<br>1<br>0.5<br>δ = tp/T tp T amb (°C) δ= tp/T tp T amb (°C)<br>0.0 0<br>0 25 50 75 100 125 150 175 0 25 50 75 100 125 150 175<br>**----- End of picture text -----**<br>


**DS1244** - **Rev 9** 

**page 3/16** 

**STPS1L40 Characteristics (curves)** 

**==> picture [513 x 207] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 5. Normalized avalanche power derating versus Figure 6. Relative variation of thermal impedance junction<br>pulse duration (Tj = 125 °C) to ambient versus pulse duration (SMA)<br>PARM(tp)<br>PARM(10 µs) 1.0 Zth(j-a)/Rth(j-a)<br>1 SMA<br>0.9<br>0.8<br>0.7<br>0.1 0.6<br>0.5<br>0.4<br>0.3<br>0.01<br>0.2<br>0.1 Single pulse t P (s)<br>0.0<br>t p(µs) 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03<br>0.001<br>1 10 100 1000<br>**----- End of picture text -----**<br>


**Figure 7. Relative variation of thermal impedance junction Figure 8. Relative variation of thermal impedance junction to ambient versus pulse duration (SMB) to lead versus pulse duration (SOD123Flat)** 

**==> picture [217 x 140] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.0 Zth(j-a)/Rth(j-a)<br>SMB<br>0.9<br>0.8<br>0.7<br>0.6<br>0.5<br>0.4<br>0.3<br>0.2<br>Single pulse<br>0.1 tP(s)<br>0.0<br>1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03<br>**----- End of picture text -----**<br>


**==> picture [217 x 140] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.0 Zth(j-l)/Rth(j-l)<br>SOD123Flat<br>0.9<br>0.8<br>0.7<br>0.6<br>0.5<br>0.4<br>0.3<br>0.2<br>0.1 Single pulse t P (s)<br>0.0<br>1.E-04 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01<br>**----- End of picture text -----**<br>


**Figure 9. Reverse leakage current versus reverse voltage applied (typical values)** 

**Figure 10. Junction capacitance versus reverse voltage applied (typical values)** 

**==> picture [218 x 141] intentionally omitted <==**

**----- Start of picture text -----**<br>
IR(mA)<br>1.E+02<br>T j = 150 °C<br>1.E+01<br>Tj = 125 °C<br>1.E+00 Tj = 100 °C<br>T j  = 75 °C<br>1.E-01<br>Tj = 50 °C<br>1.E-02<br>T j = 25 °C<br>VR(V)<br>1.E-03<br>0 5 10 15 20 25 30 35 40<br>**----- End of picture text -----**<br>


**==> picture [218 x 140] intentionally omitted <==**

**----- Start of picture text -----**<br>
C(pF)<br>1000<br>F = 1 MHz<br>VOSC = 30 mVRMS<br>Tj = 25 °C<br>100<br>VR(V)<br>10<br>1 10 100<br>**----- End of picture text -----**<br>


**DS1244** - **Rev 9** 

**page 4/16** 

**STPS1L40 Characteristics (curves)** 

**==> picture [513 x 206] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 11. Forward voltage drop versus forward current Figure 12. Thermal resistance junction to ambient versus<br>(typical values) copper surface under each lead (typical values)<br>10.00 IF (A) 200 Rth(j-a)(°C/W)<br>SMA<br>150<br>1.00<br>Tj = 125 °C Tj = 25 °C 100<br>0.10 Tj = 75 °C Epoxy printed board FR4, eCu = 35 µm<br>50<br>VF(V) SCu (cm²)<br>0.01 0<br>0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0<br>**----- End of picture text -----**<br>


**==> picture [513 x 205] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 13. Thermal resistance junction to ambient versus Figure 14. Thermal resistance junction to ambient versus<br>copper surface under each lead (typical values) copper surface under each lead (typical values)<br>200 Rth(j-a)(°C/W) 250 Rth(j-a)(°C/W)<br>SMB SOD123Flat<br>200<br>150<br>150<br>100<br>100<br>50 Epoxy printed board FR4, eCu = 35 µm Epoxy printed board FR4, eCu = 35 µm<br>50<br>SCu (cm²) SCu(cm²)<br>0 0<br>0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0<br>**----- End of picture text -----**<br>


**Figure 15. Thermal resistance junction to ambient versus copper surface under each lead (SMA Flat Notch)** 

**==> picture [225 x 151] intentionally omitted <==**

**----- Start of picture text -----**<br>
Rth(j-a) (°C/W)<br>200<br>Epoxy printed circuit board FR4,copper thickness: 35 µm<br>SMA Flat Notch<br>150<br>100<br>50<br>S(Cu)(cm²)<br>0<br>0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0<br>**----- End of picture text -----**<br>


**DS1244** - **Rev 9** 

**page 5/16** 

**STPS1L40 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. 

## **2.1** 

## **SMB package information** 

- Epoxy meets UL94, V0 

- Lead-free package 

**Figure 16. SMB package outline** 

**==> picture [303 x 237] intentionally omitted <==**

**----- Start of picture text -----**<br>
E1<br>D<br>E<br>A1<br>C A2<br>L b<br>**----- End of picture text -----**<br>


**DS1244** - **Rev 9** 

**page 6/16** 

**STPS1L40 SMB package information** 

**Table 4. SMB package mechanical data** 

||**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|
|---|---|---|---|---|
|**Ref.**|**Millimeters**||**Inches (for reference only)**||
||**Min.**|**Max.**|**Min.**|**Max.**|
|A1|1.90|2.45|0.074|0.097|
|A2|0.05|0.20|0.001|0.008|
|b|1.95|2.20|0.076|0.087|
|c|0.15|0.40|0.005|0.016|
|D|3.30|3.95|0.129|0.156|
|E|5.10|5.60|0.200|0.221|
|E1|4.05|4.60|0.159|0.182|
|L|0.75|1.50|0.029|0.060|



**Figure 17. SMB recommended footprint** 

**==> picture [226 x 113] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.62 2.60 1.62<br>(0.064) (0.102) (0.064)<br>2.18<br>(0.086)<br>5.84<br>(0.230)<br>**----- End of picture text -----**<br>


**DS1244** - **Rev 9** 

**page 7/16** 

**STPS1L40 SMA package information** 

## **2.2 SMA package information** 

- Epoxy meets UL94, V0 

- Cooling method : by conduction (C) 

## **Figure 18. SMA package outline** 

**==> picture [303 x 223] intentionally omitted <==**

**----- Start of picture text -----**<br>
E1<br>D<br>E<br>A1<br>C A2<br>L b<br>**----- End of picture text -----**<br>


**Table 5. SMA package mechanical data** 

||**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|
|---|---|---|---|---|
|**Ref.**|**Millimeters**||**Inches (for reference only)**||
||**Min.**|**Max.**|**Min.**|**Max.**|
|A1|1.90|2.45|0.074|0.097|
|A2|0.05|0.20|0.001|0.008|
|b|1.25|1.65|0.049|0.065|
|c|0.15|0.40|0.005|0.016|
|D|2.25|2.90|0.088|0.115|
|E|4.80|5.35|0.188|0.211|
|E1|3.95|4.60|0.155|0.182|
|L|0.75|1.50|0.029|0.060|



**DS1244** - **Rev 9** 

**page 8/16** 

**STPS1L40 SMA package information** 

## **Figure 19. SMA recommended footprint in mm (inches)** 

**==> picture [226 x 113] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.4 2.63 1.4<br>(0.055) (0.104) (0.055)<br>1.64<br>(0.065)<br>5.43<br>(0.214)<br>**----- End of picture text -----**<br>


**DS1244** - **Rev 9** 

**page 9/16** 

**STPS1L40 SMA Flat Notch package information** 

## **2.3 SMA Flat Notch package information** 

- Epoxy meets UL94, V0 

- Cooling method: by conduction (C) 

- Band indicates cathode 

**Figure 20. SMA Flat Notch package outline** 

**Table 6. SMA Flat Notch package mechanical data** 

|**Ref.**<br>~~=~~|**Dimensions**<br>~~ee~~<br>~~=~~|**Dimensions**<br>~~ee~~<br>~~=~~|**Dimensions**<br>~~ee~~<br>~~=~~|**Dimensions**<br>~~ee~~<br>~~=~~|**Dimensions**<br>~~ee~~<br>~~=~~|**Dimensions**<br>~~ee~~<br>~~=~~|
|---|---|---|---|---|---|---|
||**Millimeters**<br>~~es~~<br>~~=~~|||**Inches (for reference only)**<br>~~es~~<br>~~=~~|||
||**Min.**<br>~~=~~|**Typ.**<br>~~=~~|**Max.**<br>~~=~~|**Min.**<br>~~=~~|**Typ.**<br>~~=~~|**Max.**<br>~~=~~|
|A1|0.90||1.10|0.035||0.044|
|A1||0.05|||0.002||
|b|1.25||1.65|0.049||0.065|
|C|0.15||0.40|0.005||0.016|
|D|2.25||2.90|0.088||0.115|
|E|5.00||5.35|0.196||0.211|
|E1|3.95||4.60|0.155||0.182|
|G||2.00|||0.079||
|G1||0.85|||0.033||
|L|0.75||1.20|0.029|||
|L1||0.45|||0.018||
|L2||0.45|||0.018||
|L3||0.05|||0.002||
|V|||8°|||8°|
|V1|||8°|||8°|



**DS1244** - **Rev 9** 

**page 10/16** 

**STPS1L40 SMA Flat Notch package information** 

**Figure 21. SMA Flat Notch recommended footprint in mm (inches)** 

**==> picture [287 x 140] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.20 3.12 1.20<br>(0.047) (0.123) (0.047)<br>1.52<br>(0.060)<br>5.52<br>(0.217)<br>**----- End of picture text -----**<br>


**DS1244** - **Rev 9** 

**page 11/16** 

**STPS1L40 SOD123Flat package information** 

## **2.4 SOD123Flat package information** 

## **Figure 22. SOD123Flat package outline** 

**==> picture [218 x 232] intentionally omitted <==**

**----- Start of picture text -----**<br>
A<br>C1<br>L<br>HD D<br>L<br>b C<br>a<br>E<br>**----- End of picture text -----**<br>


**Table 7. SOD123Flat package mechanical data** 

|**Ref.**|**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|
|---|---|---|---|---|---|---|
||**Millimeters**|||**Inches (for reference only)**|||
||**Min.**|**Typ.**|**Max.**|**Min.**|**Typ.**|**Max.**|
|A|0.86|0.98|1.10|0.034|0.038|0.043|
|b|0.80|0.90|1.00|0.031|0.035|0.039|
|c|0.08|0.15|0.25|0.003|0.006|0.009|
|c1|0.00||0.10|0.000||0.004|
|D|2.50|2.60|2.70|0.098|0.102|0.106|
|E|1.50|1.60|1.80|0.059|0.063|0.070|
|HD|3.30|3.50|3.70|0.130|0.137|0.146|
|L|0.45|0.65|0.85|0.018|0.025|0.033|



**DS1244** - **Rev 9** 

**page 12/16** 

**STPS1L40 SOD123Flat package information** 

**Figure 23. SOD123Flat footprint dimensions (mm)** 

**==> picture [119 x 75] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.30 1.60<br>1.40<br>**----- End of picture text -----**<br>


**DS1244** - **Rev 9** 

**page 13/16** 

**STPS1L40 Ordering information** 

## **3 Ordering information** 

**Table 8. Ordering information** 

|**Order code**|**Marking**|**Package**|**Weight**|**Base qty.**|**Delivery mode**|
|---|---|---|---|---|---|
|STPS1L40U|GC4|SMB|107 mg|2500|Tape and reel|
|STPS1L40A|GB4|SMA|68 mg|5000|Tape and reel|
|STPS1L40AFN|A14|SMA Flat Notch|39 mg|10 000|Tape and reel|
|STPS1L40ZF|1L4|SOD123Flat|12.5 mg|3000|Tape and reel|



**DS1244** - **Rev 9** 

**page 14/16** 

**STPS1L40** 

## **Revision history** 

**Table 9. Document revision history** 

|**Date**|**Revision **|**Changes**|
|---|---|---|
|Jul-2003|4A|Last update.|
|Aug-2004|5|SMA package dimensions update. Reference A1 max. changed from 2.70 mm (0.106 inch.) to 2.03<br>mm (0.080).|
|24-Jun-2009|6|Added STmite flat package.|
|01-Jul-2016|7|STmite flat package information removed.<br>Added SOD123Flat package.|
|03-Dec-2018|8|UpdatedSection  FeaturesandTable 1. Absolute ratings (limiting values at 25 °C, unless otherwise<br>specified).|
|27-Sep-2019|9|AddedSection  2.3  SMA Flat Notch package information.|



**DS1244** - **Rev 9** 

**page 15/16** 

**STPS1L40** 

## **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. For additional information about ST trademarks, please refer to www.st.com/trademarks. 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. 

© 2019 STMicroelectronics – All rights reserved 

**DS1244** - **Rev 9** 

**page 16/16** 



## Links

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- [Supplier page](https://es.farnell.com/stmicroelectronics/stps1l40zf/schottky-rectifier-1a-40v-sod/dp/2723342)
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