BY203-20STAP

Standard Recovery Diode, 2 kV, 250 mA, Single, 2.4 V, 300 ns, 20 A

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Manufacturer: VISHAY
Product type: Standard Recovery Rectifier Diodes
Repetitive Reverse Voltage Vrrm Max:2kV; Forward Current If(AV):250mA; Diode Configuration:Single; Forward Voltage VF Max:2.4V; Reverse Recovery Time trr Max:300ns; Forward Surge Cur
SVHC: No SVHC (04-Feb-2026)
No. of Pins: 2Pins
Product Range: BY203
Qualification: AEC-Q101
Diode Case Style: SOD-57
Diode Configuration: Single
Forward Voltage Max: 2.4V
Forward Surge Current: 20A
Reverse Recovery Time: 300ns
Average Forward Current: 250mA
Operating Temperature Max: 150°C
Repetitive Peak Reverse Voltage: 2kV

Delivery and price
Units per pack	1000
Price	0.367 €
Current stock	1000+
Lead time	30 days

Datasheet

**BY203-12S, BY203-16S, BY203-20S** 

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www.vishay.com 

## Vishay Semiconductors 

## **Fast Avalanche Sinterglass Diode** 

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949539<br>**----- End of picture text -----**<br>


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click logo to get started<br>**----- End of picture text -----**<br>


## **DESIGN SUPPORT TOOLS** 

## **FEATURES** 

- Glass passivated junction 

- Hermetically sealed package 

- Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 

## **APPLICATIONS** 

- Fast rectification and switching avalanche sinterglass diode for TV-line output circuits an switch mode power supply 

Models Available 

## **MECHANICAL DATA** 

**Case:** SOD-57 sintered glass case 

**Terminals:** plated axial leads, solderable per MIL-STD-750, method 2026 

**Polarity:** color band denotes cathode end 

**Mounting position:** any 

**Weight:** approx. 369 mg 

|**ORDERING INFORMATION**(Example)|**ORDERING INFORMATION**(Example)|**ORDERING INFORMATION**(Example)|**ORDERING INFORMATION**(Example)|
|---|---|---|---|
|**DEVICE NAME**|**ORDERING CODE**|**TAPED UNITS**|**MINIMUM ORDER QUANTITY**|
|BY203-20S|BY203-20STR|5000 per 10" tape and reel|25 000|
|BY203-20S|BY203-20STAP|5000 per ammopack|25 000|



|**PARTS TABLE**|**PARTS TABLE**|**PARTS TABLE**|
|---|---|---|
|**PART**|**TYPE DIFFERENTIATION**|**PACKAGE**|
|BY203-12S|VR= 1200 V; IF(AV)= 250 mA|SOD-57|
|BY203-16S|VR= 1600 V; IF(AV)= 250 mA|SOD-57|
|BY203-20S|VR= 2000 V; IF(AV)= 250 mA|SOD-57|



|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C, unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C, unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C, unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C, unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C, unless otherwise specified)|**ABSOLUTE MAXIMUM RATINGS**(Tamb= 25 °C, unless otherwise specified)|
|---|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**PART**|**SYMBOL**|**VALUE**|**UNIT**|
|Reverse voltage = repetitive peak reverse<br>voltage|lR= 100 μA|BY203-12S|VR= VRRM|1200|V|
|||BY203-16S|VR= VRRM|1600|V|
|||BY203-20S|VR= VRRM|2000|V|
|Peak forward surge current|tp= 10 ms, half sine wave||IFSM|20|A|
|Average forward current|||IF(AV)|0.25|A|
|Non repetitive reverse avalanche energy|I(BR)R= 0.4 A||ER|10|mJ|
|Junction temperature range|||Tj|-55 to +150|°C|
|Storage temperature range|||Tstg|-55 to +175|°C|



Rev. 1.9, 20-Feb-18 

Document Number: 86002 

**1** 

For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**BY203-12S, BY203-16S, BY203-20S** 

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www.vishay.com 

## Vishay Semiconductors 

|**MAXIMUM THERMAL RESISTANCE**(Tamb= 25 °C, unless otherwise specified)|**MAXIMUM THERMAL RESISTANCE**(Tamb= 25 °C, unless otherwise specified)|**MAXIMUM THERMAL RESISTANCE**(Tamb= 25 °C, unless otherwise specified)|**MAXIMUM THERMAL RESISTANCE**(Tamb= 25 °C, unless otherwise specified)|**MAXIMUM THERMAL RESISTANCE**(Tamb= 25 °C, unless otherwise specified)|
|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**SYMBOL**|**VALUE**|**UNIT**|
|Junction ambient|Lead length l = 10 mm, TL= constant|RthJA|45|K/W|
||Maximum lead length|RthJA|100|K/W|



|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|**ELECTRICAL CHARACTERISTICS**(Tamb= 25 °C, unless otherwise specified)|
|---|---|---|---|---|---|---|---|
|**PARAMETER**|**TEST CONDITION**|**PART**|**SYMBOL**|**MIN.**|**TYP.**|**MAX.**|**UNIT**|
|Forward voltage|IF= 0.2 A, tp/T = 0.01, tp= 0.3ms||VF|-|-|2.4|V|
|Reverse current|VR= 700 V|BY203-12S|IR|-|-|2|μA|
||VR= 1000 V|BY203-16S|IR|-|-|2|μA|
||VR= 1200 V|BY203-20S|IR|-|-|2|μA|
|Breakdown voltage|lR= 100 μA, tp/T = 0.01, tp= 0.3 ms|BY203-12S|V(BR)|1200|-|-|V|
|||BY203-16S|V(BR)|1600|-|-|V|
|||BY203-20S|V(BR)|2000|-|-|V|
|Reverse recovery time|IF= 0.5 A, IR= 1 A, iR= 0.25 A||trr|-|-|300|ns|



## **TYPICAL CHARACTERISTICS** (Tamb = 25  C, unless otherwise specified) 

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240<br>200<br>160<br>120<br>VRRM<br>80 BY203/12 VR<br>40 BY203/16 BY203/20<br>0<br>0 400 800 1200 1600<br>949080 VR, VRRM - Rev./Rep. Peak Rev. Voltage (V)<br>Fig. 1 - Junction Temperature vs.<br>Reverse/Repetitive Peak Reverse Voltage<br> - Junction Temperature (°C)Tj<br>**----- End of picture text -----**<br>


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10<br>1<br>Tj = 175 °C<br>0.1 T j  = 25 °C<br>0.01<br>0.001<br>0 1 2 3 4 5.0<br>16397 VF - Forward Voltage (V)<br>Fig. 2 - Max. Forward Current vs. Forward Voltage<br> - Forward Current (A)<br>IF<br>**----- End of picture text -----**<br>


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0.30<br>RthJA = 45 K/W<br>I = 10 mm<br>0.25<br>0.20<br>0.15 R thJA  = 100 K/W<br>PCB: d = 25 mm<br>0.10<br>0.05 VR = VRRM<br>half sinewave<br>0<br>0 30 60 90 120 150<br>16398 Tamb - Ambient Temperature (°C)<br>Fig. 3 - Max. Average Forward Current vs.<br>Ambient Temperature<br>1000<br>VR = VRRM<br>100<br>10<br>1<br>25 50 75 100 125 150<br>16399 Tj - Junction Temperature (°C)<br>Fig. 4 - Max. Reverse Current vs. Junction Temperature<br> - Average Forward Current (A)<br>IFAV<br> - Reverse Current (μA)<br>IR<br>**----- End of picture text -----**<br>


Rev. 1.9, 20-Feb-18 

Document Number: 86002 

**2** 

For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**BY203-12S, BY203-16S, BY203-20S** 

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www.vishay.com 

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500<br>VR = VRRM<br>400<br>300 P R -Limit<br>at 100 % VR<br>200 PR-Limit<br>at 80 % VR<br>100<br>0<br>25 50 75 100 125 150<br>16400 Tj - Junction Temperature (°C)<br> - Reverse Power Dissipation (mW)<br>R<br>P<br>**----- End of picture text -----**<br>


Fig. 5 - Max. Reverse Power Dissipation vs. Junction Temperature 

## Vishay Semiconductors 

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18<br>f = 1 MHz<br>16<br>14<br>12<br>10<br>8<br>6<br>4<br>2<br>0<br>0.1 1 10 100<br>16401 VR - Reverse Voltage (V)<br>Fig. 6 - Diode Capacitance vs. Reverse Voltage<br> - Diode Capacitance (pF)<br>D<br>C<br>**----- End of picture text -----**<br>


## **PACKAGE DIMENSIONS** in millimeters (inches): **SOD-57** 

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26 (1.024) min.  4 (0.157) max.  26 (1.024) min.<br>20543<br>0.82 (0.032) max.<br>3.6 (0.142) max.<br>**----- End of picture text -----**<br>


Rev. 1.9, 20-Feb-18 

Document Number: 86002 

**3** 

For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**Outline Dimensions** 

Vishay Semiconductors 

www.vishay.com 

## **SOD-57 BYT62-BY203** 

## **PACKAGE DIMENSIONS** in millimeters (inches) 

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26 min. [1.024] 4.2 max. [0.165] 26 min. [1.024]<br>0.82 max. [0.032]<br>3.4 max. [0.134]<br>**----- End of picture text -----**<br>


23194 Rev. 3 - Date: 09.February.2005 Document no.:6.563-5006.5-4 

Rev. 1.2, 25-Apr-2022 

Document Number: 84045 

**1** 

For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 

**Legal Disclaimer Notice** Vishay 

www.vishay.com 

## **Disclaimer** 

ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 

Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. 

Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. 

Statements regarding the suitability of products for certain types of applications are based on Vishay's knowledge of typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer's responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer's technical experts. Product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein. 

Hyperlinks included in this datasheet may direct users to third-party websites. These links are provided as a convenience and for informational purposes only. Inclusion of these hyperlinks does not constitute an endorsement or an approval by Vishay of any of the products, services or opinions of the corporation, organization or individual associated with the third-party website. Vishay disclaims any and all liability and bears no responsibility for the accuracy, legality or content of the third-party website or for that of subsequent links. 

Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. 

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. 

_**© 2022 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED**_ 

Revision: 01-Jan-2022 

Document Number: 91000 

**1**

Updated at June 7, 2026

Vishay is a global leader in the manufacturing of discrete semiconductors and passive electronic components. Renowned for its exceptional quality and engineering expertise, the company produces highly reliable solutions that drive innovation across the industrial, automotive, telecommunications, and consumer electronics markets. From advanced factory automation to vehicle electrification, Vishay components provide the foundational building blocks for modern electronic design. The company's expansive portfolio is heavily focused on efficient power management, signal routing, and energy storage. Within its passive component lineup, Vishay is recognized for its extensive array of high-performance capacitors, including robust aluminium electrolytic, film, and polymer variants, alongside highly efficient power inductors. In the realm of discrete semiconductors, Vishay is a premier manufacturer of single and dual MOSFETs, as well as a vast selection of Schottky, Zener, and fast-recovery rectifier diodes designed for demanding power applications. Furthermore, Vishay delivers industry-leading circuit protection and thermal management solutions. With a broad offering of transient voltage suppressors (TVS diodes) and temperature-sensing NTC thermistors, these components are engineered to safeguard sensitive circuitry against both electrical and thermal overstress. By combining this vital mix of advanced discretes and passives, Vishay enables engineers to develop robust, space-saving, and highly resilient electronic systems.

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