# Fast / Ultrafast Diode, 300 V, 8 A, Single, 1.25 V, 35 ns, 100 A

![Product image](https://novapart.co/image/farnell:2849683RL/)

**URL**: https://novapart.co/products/STTH803G-TR/fast-ultrafast-diode-300-v-8-a-single-125-35-ns
**SKU**: STTH803G-TR
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Fast & Ultrafast Recovery Rectifier Diodes
**Price**: €0.3610
**Stock**: 200+
**Lead Time**: 127 days (indicative)

## Description

Repetitive Reverse Voltage Vrrm Max:300V; Forward Current If(AV):8A; Diode Configuration:Single; Forward Voltage VF Max:1.25V; Reverse Recovery Time trr Max:35ns; Forward Surge Curren

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3 Pin |
| Product Range | - |
| Qualification | - |
| Diode Case Style | TO-262 |
| Diode Configuration | Single |
| Forward Voltage Max | 1.25V |
| Forward Surge Current | 100A |
| Reverse Recovery Time | 35ns |
| Average Forward Current | 8A |
| Operating Temperature Max | 175°C |
| Repetitive Peak Reverse Voltage | 300V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2849683RL/)

## **STTH803** 

## High frequency secondary rectifier 

Datasheet - production data 

**==> picture [201 x 128] intentionally omitted <==**

**----- Start of picture text -----**<br>
A = K<br>K<br>K<br>K<br>A A<br>K A<br>NC<br>NC<br>TO-220AC D [2] PAK<br>**----- End of picture text -----**<br>


## **Features** 

- Combines highest recovery and reverse voltage performance 

- Ultra-fast, soft and noise-free recovery 

- ECOPACK[®] 2 compliant component for D²PAK on demand 

## **Description** 

Single fast recovery epitaxial diode suited for switch mode power supply and high frequency DC/DC converters. Packaged in TO-220AC or D[2] PAK this device is especially intended for secondary rectification. 

**Table 1: Device summary** 

|**Symbol**|**Value**|
|---|---|
|IF(AV)|8 A|
|VRRM|300 V|
|Tj(max)|175 °C|
|VF(typ)|0.85 V|
|trr(max)|25 ns|



April 2015 

DocID5375 Rev 10 

1/13 

This is information on a product in full production. 

_www.st.com_ 

**Characteristics** 

**STTH803** 

## **1 Characteristics** 

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

|**Symbol**|**Parameter**|**Parameter**|**Parameter**|**Parameter**|**Value**|**Value**|**Unit**|
|---|---|---|---|---|---|---|---|
|VRRM|Repetitivepeak reverse voltage||||300||V|
|IF(RMS)|Forward rms current||||20||A|
|IF(AV)|Average forward current δ = 0.5, square wave||TC= 150 °C||8||A|
|IFSM|Surge non repetitive forward current||tp= 10 ms sinusoidal||100||A|
|Tstg|Storage temperature range||||-65 to + 175||°C|
|Tj|Maximum operating junction temperature|||||+ 175|°C|
|||**Table 3: Thermalparameter**||||||
|**Symbol**||**Parameter**||**Value**||**Unit**||
|Rth(j-c)||Junction to case||2.5||°C/W||



**Table 4: Static electrical characteristics** 

|**Symbol**|**Parameter**|**Test conditions**|**Test conditions**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|---|
|IR_(1)_|Reverse leakage current|Tj= 25 °C|VR= 300 V|-||20<br>200|µA|
|||Tj= 125 °C||-|20|||
|VF_(2)_|Forward voltage drop|Tj= 25 °C|IF= 8 A|-||1.25<br>1|V|
|||Tj= 125 °C||-|0.85|||



## **Notes:** 

(1)Pulse test: tp = 5 ms, δ < 2% 

(2)Pulse test: tp = 380 µs, δ < 2% 

To evaluate the conduction losses use the following equation: 

## P = 0.75 x IF(AV) + 0.031 IF[2] (RMS) 

**Table 5: Dynamic electrical characteristics** 

|**Symbol**|**Parameter**|**Test conditions**|**Test conditions**|**Min.**|**Typ.**|**Max.**|<br>**Unit**|
|---|---|---|---|---|---|---|---|
|trr|Reverse recovery time|Tj= 25 °C|IF= 0.5 A, Irr= 0.25 A, IR= 1<br>A|-||25|ns|
||||IF= 1 A, dlF/dt = -50 A/µs,<br>VR= 30 V|-||35||
|tfr|Forward recoverytime|Tj= 25 °C|IF= 8 A, dIF/dt = -100 A/µs,<br>VFR= 1.1 x VFmax|-||200|ns|
|VFP|Forward recovery<br>voltage|Tj= 25 °C||-||3.5|V|
|Sfactor|Softness factor|Tj= 125 °C|IF= 8 A, VCC= 200 V<br>dIF/dt = 200 A/µs|-|0.3|||
|IRM|Reverse recovery<br>current|Tj= 125 °C||-||8|A|



2/13 

DocID5375 Rev 10 

**STTH803** 

**Characteristics** 

## **1.1 Characteristics (curves)** 

**==> picture [442 x 178] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 1: Conduction losses versus average  Figure 2: Forward voltage drop versus forward<br>current  current (maximum values)<br>**----- End of picture text -----**<br>


**==> picture [462 x 373] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 3: Relative variation of thermal impedance  Figure 4: Peak reverse recovery current versus<br>junction to case versus pulse duration  dlF/dt (typical values)<br>Figure 5: Reverse recovery time versus dlF/dt  Figure 6: Softness factor versus dlF/dt (typical<br>(typical values)  values)<br>**----- End of picture text -----**<br>


DocID5375 Rev 10 

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**Characteristics** 

**STTH803** 

**==> picture [456 x 179] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 7: Relative variation of dynamic parameters  Figure 8: Transient peak forward voltage versus<br>versus junction temperature (reference: Tj= 125 °C)  dlF/dt (typical values)<br>**----- End of picture text -----**<br>


**Figure 9: Forward recovery time versus dlF/dt (typical values)** 

**==> picture [233 x 159] intentionally omitted <==**

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DocID5375 Rev 10 

**STTH803** 

**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. 

- Cooling method: by conduction (C) 

- Recommended torque value (TO-220AC): 0.55 N.m. 

- Maximum torque value (TO-220AC): 0.70 N.m. 

- Epoxy meets UL 94,V0 

DocID5375 Rev 10 

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**STTH803** 

**Package** information 

## **2.1 D²PAK package information** 

**Figure 10: D²PAK package outline** 

This package drawing may slightly differ from the physical package. However, all the specified dimensions are guaranteed. 

~~ee~~ 6/13 DocID5375 Rev 10 ~~<2~~ 

**STTH803** 

**Package** information 

**Table 6: D²PAK package mechanical data** 

||**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|
|---|---|---|---|---|
|**Ref.**|**Millimeters**||**Inches**||
||**Min.**|**Max.**|**Min.**|**Max.**|
|A|4.36|4.60|0.172|0.181|
|A1|0.00|0.25|0.000|0.010|
|b|0.70|0.93|0.028|0.037|
|b2|1.14|1.70|0.045|0.067|
|c|0.38|0.69|0.015|0.027|
|c2|1.19|1.36|0.047|0.053|
|D|8.60|9.35|0.339|0.368|
|D1|6.90|8.00|0.272|0.311|
|D2|1.10|1.50|0.043|0.060|
|E|10.00|10.55|0.394|0.415|
|E1|8.10|8.90|0.319|0.346|
|E2|6.85|7.25|0.266|0.282|
|e|2.54 typ.||0.100||
|e1|4.88|5.28|0.190|0.205|
|H|15.00|15.85|0.591|0.624|
|J1|2.49|2.90|0.097|0.112|
|L|1.90|2.79|0.075|0.110|
|L1|1.27|1.65|0.049|0.065|
|L2|1.30|1.78|0.050|0.070|
|R|0.4|typ.|0.015||
|V2|0°|8°|-|-|



DocID5375 Rev 10 

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**STTH803** 

**Package** information 

**Figure 11: D²PAK recommended footprint (dimensions in mm)** 

8/13 

DocID5375 Rev 10 

**STTH803** 

**Package** information 

## **2.2 TO-220AC package information** 

**Figure 12: TO-220AC package outline** 

9/13 ~~So~~ 

DocID5375 Rev 10 

**STTH803** 

**Package** information 

**Table 7: TO-220AC package mechanical data** 

||**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|
|---|---|---|---|---|
|**Ref.**|**Millimeters**||**Inches**||
||**Min.**|**Max.**|**Min.**|**Max.**|
|A|4.40|4.60|0.173|0.181|
|C|1.23|1.32|0.048|0.051|
|D|2.40|2.72|0.094|0.107|
|E|0.49|0.70|0.019|0.027|
|F|0.61|0.88|0.024|0.034|
|F1|1.14|1.70|0.044|0.066|
|G|4.95|5.15|0.194|0.202|
|H2|10.00|10.40|0.393|0.409|
|L2|16.40 typ.||0.645 typ.||
|L4|13.00|14.00|0.511|0.551|
|L5|2.65|2.95|0.104|0.116|
|L6|15.25|15.75|0.600|0.620|
|L7|6.20|6.60|0.244|0.259|
|L9|3.50|3.93|0.137|0.154|
|M|2.6|typ.|0.102 typ.||
|Diam|3.75|3.85|0.147|0.151|



10/13 

DocID5375 Rev 10 

**Ordering** information 

**STTH803** 

## **3 Ordering information** 

**Table 8: Ordering information** 

|**Order code**|**Marking**|**Package**|**Weight**|**Base qty**|**Delivery mode**|
|---|---|---|---|---|---|
|STTH803D|STTH803D|TO-220AC|1.86g|50|Tube|
|STTH803G-TR|STTH803G|D2PAK|1.38g|1000|Tape and reel|



DocID5375 Rev 10 

11/13 

**STTH803** 

**Revision** history 

## **4 Revision history** 

**Table 9: Document revision history** 

|**Date**|**Revision**|**Changes**|
|---|---|---|
|26-Jun-2012|9||
|22-Apr-2015|10|Updated features,_Table 1: "Device summary"_in cover page.<br>Minor text changes in_Section 1: "Characteristics"_.<br>Updated_Section 2: "Package information"_.|



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**STTH803** 

## **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. 

© 2015 STMicroelectronics – All rights reserved 

DocID5375 Rev 10 

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## Links

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- [Supplier page](https://es.farnell.com/stmicroelectronics/stth803g-tr/rectifier-single-8a-300v-to-262/dp/2849683RL)
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