# Small Signal Schottky Diode, Dual Common Anode, 30 V, 100 mA, 450 mV, 750 mA, 150 °C

![Product image](https://novapart.co/image/farnell:1611382/)

**URL**: https://novapart.co/products/BAR43AFILM/small-signal-schottky-diode-dual-common-anode-30-v
**SKU**: BAR43AFILM
**Manufacturer**: STMICROELECTRONICS
**Price**: €0.0320
**Stock**: 1000+
**Lead Time**: 127 days (indicative)

## Description

Diode Configuration:Dual Common Anode; Repetitive Reverse Voltage Vrrm Max:30V; Forward Current If(AV):100mA; Forward Voltage VF Max:450mV; Forward Surge Current Ifsm Max:750mA; Operating Temperature Max

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3Pins |
| Product Range | BAR43 |
| Qualification | - |
| Diode Mounting | Surface Mount |
| Diode Case Style | SOT-23 |
| Diode Configuration | Dual Common Anode |
| Forward Voltage Max | 450mV |
| Forward Surge Current | 750mA |
| Reverse Recovery Time | 5ns |
| Average Forward Current | 100mA |
| Operating Temperature Max | 150°C |
| Repetitive Peak Reverse Voltage | 30V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1611382/)

## **BAR42 BAR43** Small signal Schottky diode 

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

## **Description** 

General purpose metal to silicon diodes featuring very low turn-on voltage and fast switching. 

**Table 1. Device summary** 

|**Symbol**|**Value**|
|---|---|
|IF(AV)|0.1 A|
|VRRM|30 V|
|Tj|150 °C|
|VF(max)|0.33 and 0.40 V|



**==> picture [43 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
SOT23-3L<br>**----- End of picture text -----**<br>


## **Features** 

- Very small conduction losses 

- Negligible switching losses 

- Low forward voltage drop 

- Surface mount device 

July 2017 

DocID3288 Rev 5 

1/7 

This is information on a product in full production. 

_www.st.com_ 

**Characteristics** 

**BAR42, BAR43** 

## **1 Characteristics** 

**Table 2. Absolute ratings (limiting values)** 

|||**Table 2. Absolute ratings (limiting values)**|**Table 2. Absolute ratings (limiting values)**|||
|---|---|---|---|---|---|
|**Symbol**||**Parameter**||**Value**|**Unit**|
|VDRM||Repetitive peak off-state voltage||30|V|
|IF(AV)||Continuous forward current||0.1|A|
|IFSM||Surge non repetitive forward current|tp= 10 ms sinusoidal|0.75|A|
|Ptot||Power dissipation(1)|Tamb= 25 °C|250|mW|
|Tstg||Maximum Storage temperature range||- 65 to + 150|°C|
||Tj|Maximum operating junction temperature(2)||150|°C|
||TL|Maximum temperature for soldering during 10 s||260|°C|
|1.<br>2.|For double diodes, Ptotis the total dissipation of both diodes<br>condition to avoid thermal runaway for a diode on its own heatsink.<br>dPtot<br>dTj<br><<br>1<br>Rth(j-a)|||||



**Table 3. Thermal parameter** 

||**Table 3. Thermalparameter**|||
|---|---|---|---|
|**Symbol**|**Parameter**|**Value**|**Unit**|
|Rth(j-a)|Junction to ambient(1)|500|°C/W|



1. Mounted on epoxy board with recommended pad layout. 

**Table 4. Static electrical characteristics** 

|**Symbol**|**Parameter**|**Test conditions**|**Test conditions**|**Test conditions**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|---|---|
|VBR|Breakdown<br>voltage|Tj= 25 °C||IR= 100 µA|30|||V|
|IR (1)|Reverse leakage<br>current|Tj= 25 °C||VR= VRRM|||500|nA|
|||Tj= 100 °C|||||100|µA|
|VF (2)|Forward voltage<br>drop|Tj= 25 °C|BAR42|IF= 10 mA||0.35|0.40|V|
|||||IF= 50 mA||0.50|0.65||
||||BAR43|IF= 2 mA|0.26||0.33||
|||||IF= 15 mA|||0.45||
||||ALL|IF=100 mA|||1||



1. Pulse test: tp = 5 ms, δ < 2 % 

2. Pulse test: tp = 380 µs, δ < 2 % 

2/7 

DocID3288 Rev 5 

**Characteristics** 

**BAR42, BAR43** 

**Table 5. Dynamic characteristics (Tj = 25 °C)** 

||**Table 5. Dynamic characteristics(Tj =**|**Table 5. Dynamic characteristics(Tj =**|**25 °C)**||||
|---|---|---|---|---|---|---|
|**Symbol**|**Test conditions**||**Min.**|**Typ.**|**Max.**|**Unit**|
|C|Junction capacitance|Tj= 25 °C    VR= 1 V    F = 1 MHz||7||pF|
|C|Reverse recovery time|IF= 10 mA   IR= 10 mA<br>Tj= 25 °C    Irr= 1 mA    RL= 100Ω|||5|pF|
|η|Detection efficiency|CL= 300 pF   F = 45 MHz<br>Tj= 25 °C    Vi= 2 V    RL= 50Ω|80|||ps|



## **Figure 1. Forward voltage drop versus forward Figure 2. Forward voltage drop versus forward current (typical values, low level) current (typical values, high level)** 

**==> picture [448 x 135] intentionally omitted <==**

**----- Start of picture text -----**<br>
IFM(A) IFM(A)<br>2.00E-2 5E-1<br>1.80E-2<br>1.60E-2 T =100°C j 1E-1<br>1.40E-2<br>1.20E-2 T =100°Cj<br>1.00E-2<br>8.00E-36.00E-3 T =50°C j T =25°C j 1E-2 T =50°Cj T =25°Cj<br>4.00E-3<br>2.00E-3 V FM (V) VFM(V)<br>0.00E+0 1E-3<br>0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1<br>**----- End of picture text -----**<br>


**==> picture [462 x 172] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 3. Reverse leakage current versus  Figure 4. Reverse leakage current versus<br>reverse voltage applied (typical values) junction temperature<br>IR(µA) IR(µA)<br>1E+2 1E+4<br>T =100°C j 1E+3 V R =30V<br>1E+1<br>1E+2<br>1E+0 T =50°Cj 1E+1<br>1E+0<br>1E-1 T =25j °C<br>1E-1<br>V R (V) VR(V)<br>1E-2 1E-2<br>0 5 10 15 20 25 30 0 25 50 75 100 125 150<br>**----- End of picture text -----**<br>


DocID3288 Rev 5 

3/7 

**Characteristics** 

**BAR42, BAR43** 

**==> picture [462 x 183] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 5. Junction capacitance versus reverse  Figure 6. Relative variation of thermal<br>voltage applied (typical values) impedance junction to ambient versus pulse<br>duration<br>C(pF) Zth(j-a)/Rth(j-a)<br>10 1.00<br>F=1MHz δ = 0.5<br>T j=25°C<br>5 δ  = 0.2 T<br>δ = 0.1<br>0.10 δ [=][tp/T] tp<br>2<br>Single pulse<br>1 VR(V) 0.01 epoxy FR4 with recommended pad layout, eCu = 35 µm tp(s)<br>1 2 5 10 20 30 1E-3 1E-2 1E-1 1E+0 1E+1 1E+2<br>**----- End of picture text -----**<br>


**Figure 7. Thermal resistance junction to ambient versus copper surface under each lead** 

**==> picture [220 x 133] intentionally omitted <==**

**----- Start of picture text -----**<br>
Rth(j-a)(°C/W)<br>350<br>Epoxy printed circuit board FR4, copper thickness: 35 µm<br>P=0.25W<br>300<br>250<br>200<br>S(CU)(mm²)<br>150<br>0 5 10 15 20 25 30 35 40 45 50<br>**----- End of picture text -----**<br>


4/7 

DocID3288 Rev 5 

**BAR42, BAR43** 

**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. 

**Table 6. SOT23-3L dimensions** 

|**B**|||||||||**A**<br>**D**|**A**<br>**D**|**Ref.**|**Dimensions**<br>**Millimeters**<br>**Inches**<br>**Min.**<br>**Max.**<br>**Min.**<br>**Max.**|**Dimensions**<br>**Millimeters**<br>**Inches**<br>**Min.**<br>**Max.**<br>**Min.**<br>**Max.**|**Dimensions**<br>**Millimeters**<br>**Inches**<br>**Min.**<br>**Max.**<br>**Min.**<br>**Max.**|**Dimensions**<br>**Millimeters**<br>**Inches**<br>**Min.**<br>**Max.**<br>**Min.**<br>**Max.**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||||||**Inches**||
||||**E**||||||||||**Max.**|**Min.**|**Max.**|
|||||||||||||||||
||||||||||||A|0.89|1.4|0.035|0.055|
||||||||||||A1|0|0.1|0|0.004|
||||||||**e1**|||||||||
||||||||||||B|0.3|0.51|0.012|0.02|
||||||||||||c|0.085|0.18|0.003|0.007|
||||||||||||D|2.75|3.04|0.108|0.12|
||||||**A1**<br>**L**<br>**S**<br>**c**|||**A1**|||e|0.85|1.05|0.033|0.041|
||||||||||||e1|1.7|2.1|0.067|0.083|
|||||||||||||||||
||||||||||||E|1.2|1.6|0.047|0.063|
|||||||||||||||||
||||**H**||||||||H|2.1|2.75|0.083|0.108|
||||||||||||L|0.6 typ.||0.024 typ.||
|||||||||||||||||
||||||||||||S|0.35|0.65|0.014|0.026|



## **Figure 8. Footprint (dimensions in mm)** 

**==> picture [162 x 132] intentionally omitted <==**

**----- Start of picture text -----**<br>
0.95 0.61<br>1.26<br>0.73 3.25<br>**----- End of picture text -----**<br>


DocID3288 Rev 5 

5/7 

**Ordering information** 

**BAR42, BAR43** 

## **3 Ordering information** 

**Table 7. Ordering information** 

|**Order code**|**Marking**|**Package**|**Weight**|**Base Qty**|**Delivery mode**|
|---|---|---|---|---|---|
|BAR42FILM|D94|SOT23-3L|0.01 g|3000|Tape and reel|
|BAR43FILM|D95|||||
|BAR43AFILM|DB1|||||
|BAR43CFILM|DB2|||||
|BAR43SFILM|DA5|||||



## **4 Revision history** 

**Table 8. Document revision history** 

|**Date**|**Revision**|**Changes**|
|---|---|---|
|Aug-2001|2B|Last release.|
|16-Apr-2005|3|Layout update. No content change.|
|23-Apr-2014|4|Updated ECOPACK statement.|
|18-Jul-2017|5|Updated figure in cover page.|



6/7 

DocID3288 Rev 5 

**BAR42, BAR43** 

## **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. 

© 2017 STMicroelectronics – All rights reserved 

DocID3288 Rev 5 

7/7 



## Links

- [View this product on Novapart](https://novapart.co/products/BAR43AFILM/small-signal-schottky-diode-dual-common-anode-30-v)
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- [Supplier page](https://es.farnell.com/stmicroelectronics/bar43afilm/diode-schottky/dp/1611382)
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