# Schottky Rectifier, 50 V, 20 A, Single, TO-277B, 3 Pins, 650 mV

![Product image](https://novapart.co/image/farnell:2777411/)

**URL**: https://novapart.co/products/DST2050S/schottky-rectifier-50-v-20-a-single-to-277b-3-pins
**SKU**: DST2050S
**Manufacturer**: LITTELFUSE
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Schottky Diodes || Schottky Rectifier Diodes
**Price**: €0.4990
**Stock**: 10+
**Lead Time**: 204 days (indicative)

## Description

Repetitive Reverse Voltage Vrrm Max:50V; Forward Current If(AV):20A; Diode Configuration:Single; Diode Case Style:TO-277B; No. of Pins:3Pins; Forward Voltage VF Max:650mV; Forward Surge

## Specifications

| Parameter | Value |
|---|---|
| Svhc | To Be Advised |
| No. Of Pins | 3Pins |
| Product Range | DST |
| Qualification | - |
| Diode Mounting | Surface Mount |
| Diode Case Style | TO-277B |
| Diode Configuration | Single |
| Forward Voltage Max | 650mV |
| Forward Surge Current | 250A |
| Average Forward Current | 20A |
| Operating Temperature Max | 150°C |
| Repetitive Peak Reverse Voltage | 50V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2777411/)

**Schottky Barrier Rectifier** DST2050S, 20A, 50V, TO-277B, Single 

~~RoHS Pb~~ **e3** ~~HFL_I1@O~~ 

## DST2050S 

**==> picture [505 x 246] intentionally omitted <==**

**----- Start of picture text -----**<br>
Description<br>— Lo<br>Littelfuse DST series Ultra Low VF Schottky Barrier<br>Rectifier is designed to meet the general requirements<br>of commercial and industry applications by providing high<br>temperature, low leakage and lower VF products.<br>It is suitable for high frequency switching mode power<br>supply, free-wheeling diodes and polarity protection<br>diodes.<br>Features<br>a Lo<br>•   Ultra low forward voltage  •   Single die in TO-277B<br>Pin out drop Package<br>Lo<br>•   High frequency operation •   Pb-free E3 means 2nd<br>level interconnect is<br>•   MSL: Level 1 - unlimited<br>Pb-free and the terminal<br>Anode 1  •   High junction  finish material is tin(Sn)<br>K  temperature capability (IPC/ JEDEC J-STD-<br>609A.01)<br>•   Trench MOS Schottky<br>Cathode<br>Anode 2  technology<br>**----- End of picture text -----**<br>


- High frequency operation •   Pb-free E3 means 2nd level interconnect is 

- •   MSL: Level 1 - unlimited Pb-free and the terminal 

- •   High junction finish material is tin(Sn) temperature capability (IPC/ JEDEC J-STD609A.01) 

- •   Trench MOS Schottky technology 

## **Applications** Lo 

- Switching mode power •   Free-Wheeling diodes supply 

   - Polarity Protection Diodes 

- DC/DC converters 

## **Maximum Ratings** 

|Parameters|Symbol|Test Conditions|Max|Unit|
|---|---|---|---|---|
|Peak Inverse Voltage|VRWM|-|50|V|
|Average Forward Current|IF(AV)|50% duty cycle @TL= 125 °C<br>rectangular wave form|20|A|
|Peak One Cycle Non-Repetitive Surge<br>Current|IFSM|8.3 ms, half Sine pulse|250|A|



|**Electrical Characteristics**<br>~~LO~~|**Electrical Characteristics**<br>~~LO~~|**Electrical Characteristics**<br>~~LO~~|**Electrical Characteristics**<br>~~LO~~|**Electrical Characteristics**<br>~~LO~~|
|---|---|---|---|---|
|Parameters|Symbol|Test Conditions|Max|Unit|
|Forward Voltage Drop*|VF1<br>VF2|@20A, Pulse, TJ= 25 °C<br>@20A, Pulse, TJ= 125 °C|0.65<br>0.60|V|
|Reverse Current*|IR1<br>IR2|@VR= rated VR,TJ= 25 °C<br>@VR= rated VR,TJ= 125 °C|4<br>180|mA|



* Pulse Width < 300μs, Duty Cycle <2% 

©2022 Littelfuse, Inc Specifications are subject to change without notice. Revised:08/02/22 

**Schottky Barrier Rectifier** DST2050S, 20A, 50V, TO-277B, Single 

**==> picture [476 x 128] intentionally omitted <==**

**----- Start of picture text -----**<br>
||||||
|---|---|---|---|---|
|Thermal-Mechanical Specifications|
|Parameters|Symbol|Test Conditions|Max|Unit|
|Junction Temperature|TJ|-55 to +150|°C|
|Storage Temperature|Tstg|-55 to +150|°C|
|Maximum Thermal Resistance|
|Junction to Ambient|RthJA|75|°C/W|
|DC operation|
|Maximum Thermal Resistance|
|Junction to Lead|RthJL|3.5|°C/W|
|Approximate Weight|wt|0.08|g|
|Case Style|TO-277B|

**----- End of picture text -----**<br>


## **Figure 1: Typical Forward Characteristics** 

## **Figure 2:  Typical Reverse Characteristics** 

Units mounted on 30mm x 30mm copper pad. 

## **Figure 3:  Typical Junction Capacitance** 

©2022 Littelfuse, Inc Specifications are subject to change without notice. Revised:08/02/22 

**Schottky Barrier Rectifier** DST2050S, 20A, 50V, TO-277B, Single 

## **Dimensions-TO-277B** ~~LT~~ 

|**Symbol**<br>**Millimeters**<br>**Min**<br>**Typ**<br>A<br>6.30<br>6.50<br>B<br>5.28<br>5.38<br>C<br>3.88<br>3.98<br>D<br>2.90<br>3.05<br>E<br>3.40<br>3.55<br>F<br>4.20<br>4.40<br>G<br>1.70<br>1.80<br>I<br>1.74<br>1.84<br>J<br>0.65<br>0.85<br>K<br>0.85<br>0.90<br>L<br>0.95<br>1.10<br>M<br>0.20<br>0.25<br>N<br>0.25<br>0.40<br>~~|~~<br>~~pT~~<br>~~—~~<br>~~|~~<br>~~|~~<br>~~|~~|**Max**<br>6.70<br>5.48<br>4.08<br>3.20<br>3.70<br>4.60<br>1.90<br>1.94<br>1.05<br>0.95<br>1.25<br>0.30<br>0.55|
|---|---|
|O<br>4.00<br>4.05|4.25|



## **Mounting Pad Layout** 

**==> picture [217 x 87] intentionally omitted <==**

**----- Start of picture text -----**<br>
4.90[0.193]<br>MAX  1.00[0.039]<br>t e MAX<br>a 3.20MAX [0.126] 0.95[0.037] 1.94[0.076]<br>ot MAX  MAX<br>1.40[0.055]<br>—— MAX<br>**----- End of picture text -----**<br>


## **Part Numbering and Marking System** [Po 

DST           = Device Type 20              = Forward Current (20A) DST2050S 50              = Reverse Voltage (50V) S                = Package Type LF  YYWWL LF               = Littelfuse YY              = Year WW            = Week L                 = Lot Number 

**==> picture [243 x 80] intentionally omitted <==**

**----- Start of picture text -----**<br>
Packing Options<br>Po<br>Part Number Marking Packing Mode M.O.Q<br>DST2050S DST2050S 5000pcs / Reel 5000<br>Carrier Tape & Reel Specification<br>**----- End of picture text -----**<br>


|Symbol<br>**A**<br>**B**<br>**d**|Millimeters<br>Min<br>Max<br>4.28<br>4.48<br>6.80<br>7.00<br>1.40<br>1.60<br>~~LL~~|Millimeters<br>Min<br>Max<br>4.28<br>4.48<br>6.80<br>7.00<br>1.40<br>1.60<br>~~LL~~|
|---|---|---|
|**d1**|-|1.50|
|**E**|1.65|1.85|
|**F**|5.40|5.60|
|**P**|7.90|8.10|
|**P0**|3.90|4.10|
|**W**|11.70|12.30|



©2022 Littelfuse, Inc Specifications are subject to change without notice. Revised:08/02/22 



## Links

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- [Supplier page](https://es.farnell.com/littelfuse/dst2050s/schottky-rect-50v-20a-to-277b/dp/2777411)
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