# Fast / Ultrafast Diode, 300 V, 20 A, Dual Common Cathode, 1.2 V, 35 ns, 150 A

![Product image](https://novapart.co/image/farnell:2806735/)

**URL**: https://novapart.co/products/STTH20L03CT/fast-ultrafast-diode-300-v-20-a-dual-common
**SKU**: STTH20L03CT
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Fast & Ultrafast Recovery Rectifier Diodes
**Price**: €0.5790
**Stock**: 10+
**Lead Time**: 120 days (indicative)

## Description

Repetitive Reverse Voltage Vrrm Max:300V; Forward Current If(AV):20A; Diode Configuration:Dual Common Cathode; Forward Voltage VF Max:1.2V; Reverse Recovery Time trr Max:35ns; Forwar

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3 Pin |
| Product Range | - |
| Qualification | - |
| Diode Case Style | TO-220AB |
| Diode Configuration | Dual Common Cathode |
| Forward Voltage Max | 1.2V |
| Forward Surge Current | 150A |
| Reverse Recovery Time | 35ns |
| Average Forward Current | 20A |
| Operating Temperature Max | 175°C |
| Repetitive Peak Reverse Voltage | 300V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2806735/)

## **STTH20L03C** 

## High frequency secondary rectifier 

Datasheet - production data 

## **Description** 

**==> picture [426 x 258] intentionally omitted <==**

**----- Start of picture text -----**<br>
A1 Description<br>K<br>A2 Dual center tap fast recovery epitaxial diodes<br>aan<br>suited for switch mode power supply and high<br>frequency DC to DC converters.<br>K<br>Packaged either in TO-220AB and D [2] PAK, this<br>device is particularly intended for secondary<br>rectification inside SMPS with high space and<br>power density.<br>Table 1: Device summary<br>A1 [K A2]<br>Symbol  Value<br>TO-220AB<br>IF(AV) 2 x 10 A<br>K VRRM 300 V<br>K<br>Tj -40 to +175 °C<br>VF  (typ.)  0.8 V<br>trr (typ.)  26 ns<br>A2<br>os A2<br>A1<br>A1<br>D [2] PAK<br>**----- End of picture text -----**<br>


## **Features** 

- Ultrafast, soft and noise-free recovery 

- Low forward voltage drop meaning very small conduction losses 

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

October 2016 

DocID023115 Rev 2 

1/13 

This is information on a product in full production. 

_www.st.com_ 

**Characteristics** 

**STTH20L03C** 

## **1 Characteristics** 

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

|**Symbol**|**Parameter**|**Parameter**|**Parameter**|**Value**|**Unit**|
|---|---|---|---|---|---|
|VRRM|Repetitivepeak reverse voltage|||300|V|
|IF(RMS)|Forward rms current|||30|A|
|IF(AV)|Average forward current<br>δ = 0.5, square wave|TC= 155 °C|Per diode|10|A|
|||TC= 150 °C|Per device|20||
|IFSM|Surge non repetitive forward<br>current|tp= 10 ms sinusoidal||150|A|
|Tstg|Storage temperature range|||-65 to +175|°C|
|Tj|Maximum operating junction temperature range|||-40 to +175|°C|



**Table 3: Thermal parameters** 

|**Symbol**|**Parameter**||**Max. value**|**Unit**|
|---|---|---|---|---|
|Rth(j-c)|Junction to case|Per diode|1.5|°C/W|
|||Total|1.0||
|Rth(c)|Coupling||0.5|°C/W|



When the diodes 1 and 2 are used simultaneously: 

ΔTj (diode1) = P(diode1) x Rth(j-c) (per diode) + P(diode2) x Rth(c) 

**Table 4: Static electrical characteristics (per diode)** 

|**Symbol**|**Parameter**|**Test conditions**|**Test conditions**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|---|
|IR_(1)_|Reverse leakage current|Tj= 25 °C|VR= VRRM|-||10|µA|
|||Tj= 125 °C||-|10|100||
|VF_(2)_|Forward voltage drop|Tj= 25 °C|IF= 10 A|-|0.95|1.2|V|
|||Tj= 125 °C||-|0.8|0.95||



## **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 = 0.8 x IF(AV) + 0.015 x IF[2] (RMS) 

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**STTH20L03C** 

**Characteristics** 

||**Table 5: Dynamic electrical characteristics(per diode)**|**Table 5: Dynamic electrical characteristics(per diode)**|**Table 5: Dynamic electrical characteristics(per diode)**|**Table 5: Dynamic electrical characteristics(per diode)**||||
|---|---|---|---|---|---|---|---|
|**Symbol**|**Parameter**|**Test conditions**||**Min.**|**Typ.**|**Max.**|**Unit**|
|trr|Reverse recovery time|Tj= 25 °C|IF= 1 A,<br>VR= 30 V,<br>dlF/dt = - 100 A/µs|-|26|35|ns|
|||Tj= 125 °C|IF= 10 A,<br>VR= 200 V,<br>dlF/dt = - 200 A/µs|-|55|72||
|IRM|Reverse recovery<br>current||IF= 10 A,<br>VR= 200 V,<br>dlF/dt = - 200 A/µs|-|9|12|A|
|Sfactor|Softness factor|||-|0.3|||
|QRR|Reverse recovery<br>charges|||-|250|375|nC|
|tfr|Forward recoverytime|Tj= 25 °C|IF= 10 A,<br>VFR= 1.05 V,<br>dlF/dt = 100 A/µs|-||200|ns|
|VFP|Forward recovery<br>voltage|||-|2.5|3.5|V|



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**Characteristics** 

**STTH20L03C** 

## **1.1 Characteristics (curves)** 

**Figure 1: Conduction losses versus average forward current (per diode)** 

**==> picture [200 x 119] intentionally omitted <==**

**----- Start of picture text -----**<br>
16 PF(AV)(W)<br>14 δ = 0.05 δ = 0.1 δ = 0.2 δ = 0.5 δ = 1.0<br>12<br>10<br>8<br>6<br>T<br>4<br>2<br>IF(AV)(A) δ= tp/T tp<br>0<br>0 2 4 6 8 10 12 14<br>**----- End of picture text -----**<br>


**Figure 2: Forward voltage drop versus forward current (per diode)** 

**==> picture [180 x 106] intentionally omitted <==**

**Figure 3: Relative variation of thermal impedance junction to case versus pulse duration** 

**Figure 4: Peak reverse recovery current versus dlF/dt (typical values, per diode)** 

**==> picture [184 x 106] intentionally omitted <==**

**==> picture [446 x 178] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 5: Reverse recovery time versus dlF/dt  Figure 6: Reverse recovery charges versus dlF/dt<br>(typical values, per diode)  (typical values, per diode)<br>Qrr (nC)<br>400<br>IF=IF(AV)<br>350 VR=200 V<br>Tj=125 °C<br>300<br>250<br>200<br>150<br>100<br>50 dIF/dt(A/µs)<br>0<br>0 50 100 150 200 250 300 350 400 450 500<br>**----- End of picture text -----**<br>


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**Characteristics** 

**==> picture [454 x 177] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 7: Reverse recovery softness factor versus  Figure 8: Relative variation of dynamic parameters<br>dlF/dt (typical values, per diode)  versus junction temperature<br>Sfactor<br>0.8<br>0.7 VTIjR=125 °CF=200 V=IF(AV)<br>0.6<br>0.5<br>0.4<br>0.3<br>0.2<br>0.1 dIF/dt(A/µs)<br>0.0<br>0 50 100 150 200 250 300 350 400 450 500<br>**----- End of picture text -----**<br>


**Figure 9: Transient peak forward voltage versus Figure 10: Forward recovery time versus dlF/dt dlF/dt (typical values, per diode) (typical values, per diode)** 

**==> picture [212 x 123] intentionally omitted <==**

**----- Start of picture text -----**<br>
180 tfr (ns)<br>IF=IF(AV)<br>160 VFR=1.05 V<br>Tj=125 °C<br>140<br>120<br>100<br>80<br>60<br>40<br>20<br>dIF/dt(A/µs)<br>0<br>0 5 0 100 150 200 250 300 350 400 450 500<br>**----- End of picture text -----**<br>


**Figure 11: Junction capacitance versus reverse voltage applied (typical values, per diode)** 

**==> picture [187 x 55] intentionally omitted <==**

**==> picture [221 x 157] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 12: Thermal resistance, junction to ambient,<br>versus copper surface under tab<br>Rth(j-a) (°C/W)<br>80<br>D²PAK<br>70<br>60<br>50<br>40<br>30<br>20<br>Epoxy printed board FR4, eCU= 35 µm<br>10<br>SCu(cm²)<br>0<br>0 5 10 15 20 25 30 35 40<br>**----- End of picture text -----**<br>


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**STTH20L03C** 

**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) 

- Epoxy meets UL 94,V0 

- Recommended torque value: 0.55 N·m (for TO-220AB) 

- Maximum torque value: 0.7 N·m (for TO-220AB) 

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**Package** information 

## **STTH20L03C** 

## **2.1 D²PAK package information** 

**Figure 13: D²PAK package outline** 

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

~~ee~~ DocID023115 Rev 2 7/13 

**STTH20L03C** 

**Package** information 

|formation|**STTH20L03C**|**STTH20L03C**|**STTH20L03C**|**STTH20L03C**|
|---|---|---|---|---|
||**Table 6: D²PAKpackage mechanical data**||||
|**Ref.**|**Dimensions**||||
||**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°|0°|8°|



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**Package** information 

**Figure 14: D²PAK recommended footprint (dimensions in mm)** 

9/13 ~~ee~~ 

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**STTH20L03C** 

**Package** information 

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

**Figure 15: TO-220AB package outline** 

**==> picture [406 x 544] intentionally omitted <==**

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**STTH20L03C** 

**Package** information 

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

|**Ref.**|**Dimensions**|**Dimensions**|**Dimensions**|**Dimensions**|
|---|---|---|---|---|
||**Millimeters**||**Inches**||
||**Min.**|**Max.**|**Min.**|**Max.**|
|A|4.40|4.60|0.173|0.181|
|b|0.61|0.88|0.240|0.035|
|b1|1.14|1.70|0.045|0.067|
|c|0.48|0.70|0.019|0.028|
|D|15.25|15.75|0.600|0.620|
|D1|1.27 typ.||0.050 typ.||
|E|10.00|10.40|0.394|0.409|
|e|2.40|2.70|0.094|0.106|
|e1|4.95|5.15|0.195|0.203|
|F|1.23|1.32|0.048|0.052|
|H1|6.20|6.60|0.244|0.260|
|J1|2.40|2.72|0.094|0.107|
|L|13.00|14.00|0.512|0.551|
|L1|3.50|3.93|0.138|0.155|
|L20|16.40 typ.||0.646 typ.||
|L30|28.90 typ.||1.138 typ.||
|θP|3.75|3.85|0.148|0.152|
|Q|2.65|2.95|0.104|0.116|



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**Ordering** information 

**STTH20L03C** 

## **3 Ordering information** 

**Table 8: Ordering information** 

|**Order code**|**Marking**|**Package**|**Weight**|**Base qty.**|**Delivery mode**|
|---|---|---|---|---|---|
|STTH20L03CT|STTH20L03CT|TO-220AB|1.9g|50|Tube|
|STTH20L03CG-TR|STTH20L03CG|D2PAK|1.38g|1000|Tape and reel|



## **4 Revision history** 

**Table 9: Document revision history** 

|**Date**|**Revision**|**Changes**|
|---|---|---|
|22-Jun-2012|1|Initial release.|
|07-Oct-2016|2|Updated cover page and_Table 8: "Ordering information"_.<br>Updated_Section 2.1: "D²PAK package information"_.|



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**STTH20L03C** 

## **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. 

- © 2016 STMicroelectronics – All rights reserved 

DocID023115 Rev 2 

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## Links

- [View this product on Novapart](https://novapart.co/products/STTH20L03CT/fast-ultrafast-diode-300-v-20-a-dual-common)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/stmicroelectronics/stth20l03ct/rectifier-dual-20a-300v-to-220ab/dp/2806735)
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