# Fast / Ultrafast Diode, 1.2 kV, 8 A, Single, 2.5 V, 45 ns, 70 A

![Product image](https://novapart.co/image/farnell:2806754/)

**URL**: https://novapart.co/products/STTH8S12D/fast-ultrafast-diode-12-kv-8-a-single-25-v-45-ns
**SKU**: STTH8S12D
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Fast & Ultrafast Recovery Rectifier Diodes
**Price**: €0.3950
**Stock**: 10+
**Lead Time**: 120 days (indicative)

## Description

Repetitive Reverse Voltage Vrrm Max:1.2kV; Forward Current If(AV):8A; Diode Configuration:Single; Forward Voltage VF Max:2.5V; Reverse Recovery Time trr Max:45ns; Forward Surge Cur

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 2 Pin |
| Product Range | - |
| Qualification | - |
| Diode Case Style | TO-220AC |
| Diode Configuration | Single |
| Forward Voltage Max | 2.5V |
| Forward Surge Current | 70A |
| Reverse Recovery Time | 45ns |
| Average Forward Current | 8A |
| Operating Temperature Max | 175°C |
| Repetitive Peak Reverse Voltage | 1.2kV |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2806754/)

## **STTH8S12** 

## Turbo 2 ultrafast high voltage rectifier 

− **Datasheet production data** 

## **Description** 

**==> picture [111 x 121] intentionally omitted <==**

**----- Start of picture text -----**<br>
K<br>A<br>K<br>TO-220AC<br>**----- End of picture text -----**<br>


The STTH8S12 is developed using ST’s Turbo 2 1200 V technology. It is well-suited as a boost diode, especially for use in UPS. 

**Table 1. Device summary** 

|**Symbol**|**Value**|
|---|---|
|IF(AV)|8 A|
|VRRM|1200 V|
|trr(typ)|32 ns|
|VF(typ)|1.75 V|
|Tj(max)|175 °C|



## **Features** 

- Ultrafast switching 

- Low reverse current 

- Low thermal resistance 

- Reduces switching and conduction losses 

September 2014 

DocID026655 Rev 1 

1/8 

This is information on a product in full production. 

_www.st.com_ 

**Characteristics** 

**STTH8S12** 

**1 Characteristics** 

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

|**Table 2. Absolute ratings (limiting values at Tj = 25 °C, unless otherwise specified)gs (limiting values at Tj = 25 °C, unless otherwise specified)s (limiting values at Tj = 25 °C, unless otherwise specified)(limiting values at Tj = 25 °C, unless otherwise specified)limiting values at Tj = 25 °C, unless otherwise specified)g values at Tj = 25 °C, unless otherwise specified) values at Tj = 25 °C, unless otherwise specified)j = 25 °C, unless otherwise specified) = 25 °C, unless otherwise specified)pecified)ecified))**|**Table 2. Absolute ratings (limiting values at Tj = 25 °C, unless otherwise specified)gs (limiting values at Tj = 25 °C, unless otherwise specified)s (limiting values at Tj = 25 °C, unless otherwise specified)(limiting values at Tj = 25 °C, unless otherwise specified)limiting values at Tj = 25 °C, unless otherwise specified)g values at Tj = 25 °C, unless otherwise specified) values at Tj = 25 °C, unless otherwise specified)j = 25 °C, unless otherwise specified) = 25 °C, unless otherwise specified)pecified)ecified))**|
|---|---|
|**Symbol**<br>**Parameter**<br>**Value**<br>**Unit**<br>VRRM<br>Repetitive peak reverse voltage<br>1200<br>V<br>IF(RMS)<br>Forward rms current<br>25<br>A<br>IF(AV)<br>Average forward current,δ= 0.5<br>Tc= 110 °C<br>8<br>A<br>IFSM<br>Surge non repetitive forward current<br>tp= 10 ms sinusoidal<br>70<br>A<br>Tstg<br>Storage temperature range<br>-65 to +175<br>°C<br>Tj<br>Maximum operating junction temperature<br>175<br>°C<br>~~<==~~||
|**Table 3. Thermalparameters**||
|**Symbol**<br>**Parameter**<br>**Value**|**Unit**|
|Rth(j-c)<br>Junction to case<br>2.3|°C/W|
|**Table 4. Static electrical characteristics**||
|**Symbol**<br>**Parameter**<br>**Test conditions**<br>**Min.**<br>**Typ.**<br>**Max.**<br>**Unit**<br>IR<br>(1)<br>Reverse leakage current<br>Tj= 25 °C<br>VR= VRRM<br>5<br>µA<br>Tj= 150 °C<br>20<br>200<br>VF<br>(2)<br>Forward voltage drop<br>Tj= 25 °C<br>IF= 8 A<br>2.7<br>V<br>Tj= 150 °C<br>1.75<br>2.5<br>~~eet~~||
|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 = 1.7 x IF(AV) + 0.1 IF[2] (RMS) **Table 5. Dynamic characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit** trr Reverse recovery time Tj = 25 °C dIIF = 1 A, VF/dt = 200 A/µsR = 30 V, 32 45 ns IRM Reverse recovery current 11 15 A S Softness factor T = 125 °C IF = 8 A, VR = 600 V, 2 j dIF/dt = 200 A/µs QRR Reverse recovery charge 800 nC ~~ST~~ 2/8 DocID026655 Rev 1 

**STTH8S12** 

**Characteristics** 

**Figure 1. Average forward power dissipation versus average forward current** 

**Figure 2. Forward voltage drop versus forward current (typical values)** 

**==> picture [447 x 139] intentionally omitted <==**

**----- Start of picture text -----**<br>
PF(AV)(W) IF(A)<br>30 100.0<br>δ = 0.05 δ = 0.1 δ = 0.2 δ = 0.5 δ = 1<br>25 LTT ITAL ee<br>Peete PY AL AeA EPP Py ert ert<br>20 LETT PTAA TAT TAT Ar 10.0 PETeee<br>Tj = 150 °C Tj = 25  ° C<br>15 PEtLET PietT IYA Phe| Ay =Res 4 Ea-_-=- -- =———o<br>eee ep 4 ae PrP iAt errrrrr<br>10 LPP A ae 1.0 PLETAL YELL y<br>BEn/2//0Z2eeneeee T See 2a SaaS SS SS<br>5<br>li tAgaeee te I F(AV) (A) AA. δ = tp/T tp oe VF(V)<br>00 LAFAft 1 2 ttt 3 4 5 6 tHPT 7 8 AV 9 “ 10 11 0.10.0 FOP PE [VIVIT] 0.5 RYCECEEELELLL 1.0 1.5 ITE 2.0 2.5 TTT 3.0 ttt 3.5 4.0 ee 4.5 | 5.0<br>**----- End of picture text -----**<br>


**Figure 3. Forward voltage drop versus forward current (maximum values)** 

**Figure 4. Relative variation of thermal impedance, junction to case, versus pulse duration** 

**==> picture [446 x 136] intentionally omitted <==**

**----- Start of picture text -----**<br>
100.0 SS IF(A) 1.0 a Zth(j-c)/Rth(j-c) 00<br>0.9<br>FERRERS SES | CHIH<br>0.8<br>PCAC EEE eer eer 0.7 EE<br>10.0 Tj = 150 °C<br>EEL TT ee ert ttt 0.6 EEE<br>GO 2 | ee ee |<br>BREESEi A Tj = 25  ° C | 0.5 FEOSS ood<br>0.4<br>1.0 POI————— 0.3 LotEETF TTTZtAA T E T=e<br>Single pulse<br>Se oe 0.2 bo BAR HR EH EHH<br>BEER REESE EERE REFERS ey ti oT ee<br>V F (V) 0.1<br>0.1 POPE] PPTL VYELEL ETE EEE EE  EEE 0.0 adeHE EE EE EI t P (s)<br>0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00<br>**----- End of picture text -----**<br>


**Figure 5. Peak reverse recovery current versus dIF/dt (typical values)** 

**Figure 6. Reverse recovery time versus dIF/dt (typical values)** 

**==> picture [450 x 139] intentionally omitted <==**

**----- Start of picture text -----**<br>
IRM(A) tRR(ns)<br>24 600<br>20 T VIjR  = 125 F = 600 V= I F(AV) ° C PTT TTT eT ee yey yey ey 500 BERR T VIjR  = 125 F = 600 V= I F(AV) ° C<br>PPCBERR ae PAT TTRVR Pe eT Ey<br>16 400<br>FERRE Eee | EREEEEEEEEEEEEEEECHH<br>12 Fit ttt tt peerLaet tT TT tT 300 PE APT EP PP<br>PTET TT tert tte ee tT BERN<br>8 200<br>PTET terre ee BERNER<br>4 A 100 [SY ———_}<br>CORREFo CT |  ECE |<br>dI F /dt(A/µs) dI F /dt(A/µs)<br>0 MERE 0 eee PETE TEEPE ey ee ey<br>0 50 100 150 200 250 300 350 400 450 500 0 50 100 150 200 250 300 350 400 450 500<br>**----- End of picture text -----**<br>


DocID026655 Rev 1 

3/8 

**Characteristics** 

**STTH8S12** 

**Figure 7. Reverse recovery charges versus dI** F **/dt (typical values)** 

**Figure 8. Reverse recovery softness factor versus dI** F **/dt (typical values)** 

**==> picture [447 x 137] intentionally omitted <==**

**----- Start of picture text -----**<br>
1200 QRR(nC) 3.5 SFACTOR<br>1000 T VI j R  = 125  F = 600 V= I F(AV) [°] C LETT Tet eee ye ee yy 3.0 [TTTTEPT TV I jR=125 °C F =600 V =IF(AV)<br>800 OoBeeBEEEEEECEEEEEE-—_ eee | 2.5 SSCEEEEEEEEPPP Nee eeeTTTte ep Tyeeee ee et<br>itt Peer 2.0 ERC CRSCEE EEE EE ECE<br>600<br>or  peer te ee Pe eT 1.5 COTS EE[=<br>400 PEt TEEHaunTySUSeT yeerataeueezee eee yy ey lM ptt}STaazazic,ttt tt | ttSasetzarepre<br>1.0<br>PEt Pie; eee ey ty<br>200 PEt Te er e T ye ey y e yyyee y ee yyyyey 0.5 ECCCEEELL E EEEEL E EEIEL<br>dIF/dt(A/µs) dIF/dt(A/µs)<br>0 PettLETTE titty T TEE T Litretee yet 0.0 FEET LEETEPTEEPTPTErererey PTT rrrLLLrt ttyLLL<br>0 50 100 150 200 250 300 350 400 450 500 0 50 100 150 200 250 300 350 400 450 500<br>**----- End of picture text -----**<br>


**Figure 9. Relative variations of dynamic parameters versus junction temperature** 

**Figure 10. Junction capacitance versus reverse voltage applied (typical values)** 

**==> picture [448 x 140] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.4 100 C(pF)<br>ee ee es I F  = I F(AV) eS SS YO SO OS SG GN SG SG OS F = 1 MHz GYGO OO<br>1.2 Reference: TVR = 600 Vj = 125°C V OSC T = 30 mV j = 25 °C RMS<br>SFACTOR<br>1.0 -—— | —}—} Neen |<br>povpespe ete) |  EPEAT<br>0.8 I RM<br>Se—a a 10 Tt Deel<br>0.6 Pe-i7 | fTie [|ee| eeTemet<br>0.4 Q RR<br>repsee ee | LTEee TTT ETesTT]<br>0.2<br>a a ee ee ee Il |<br>T j (°C) VR(V)<br>0.0 p+} |} ++} |]<br>25 es 50 75 100 125 1 UNM FUE ITN EC<br>1 10 100 1000 10000<br>**----- End of picture text -----**<br>


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**STTH8S12** 

**Package information** 

## **2 Package information** 

- Epoxy meets UL94, V0 

- Cooling method: by conduction (C) 

- Recommended torque value: 0.4 N·m to 0.6 N·m 

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. 

## **Figure 11. T0-220AC dimension definitions** 

**==> picture [314 x 309] intentionally omitted <==**

**----- Start of picture text -----**<br>
H2 A<br>Ø I C<br>L5<br>L7<br>r ory Hh<br>L6<br>L2<br>D<br>F1 L9<br>L4<br>F<br>IL | M<br>E<br>L sh<br>G<br>**----- End of picture text -----**<br>


DocID026655 Rev 1 

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**STTH8S12** 

**Package information** 

**Table 6. T0-220AC dimension values** 

||**Table 6. T0-220AC dimension values**|**Table 6. T0-220AC dimension values**|**Table 6. T0-220AC dimension values**|**Table 6. T0-220AC dimension values**|**Table 6. T0-220AC dimension values**|**Table 6. T0-220AC dimension values**|
|---|---|---|---|---|---|---|
|**Ref.**<br>~~a~~|**Dimensions**<br>~~a~~||||||
||**Millimeters**<br>~~a~~<br>~~ee~~<br>~~aee~~<br>|||**Inches**<br>~~a~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>|||
||**Min.**<br>~~ee~~<br>~~a~~<br>|**Typ.**<br>~~ee~~<br>~~ee~~<br>|**Max.**<br>~~ee~~<br>~~ee~~<br>|**Min.**<br>~~ee~~<br>~~ee~~<br>|**Typ.**<br>~~ee~~<br>~~ee~~<br>|**Max.**<br>~~ee~~<br>~~ee~~<br>|
|A<br>~~a~~|4.40<br>~~a~~<br>|~~ee~~<br>|4.60<br>~~ee~~<br>|0.173<br>~~ee~~<br>|~~ee~~<br>|0.181<br>~~ee~~<br>|
|C<br>~~aee~~|1.23<br>~~a ~~<br>~~ee~~|~~ee~~<br>~~ee~~|1.32<br>~~ee ~~<br>~~ee~~|0.048<br> ~~ee~~<br>~~ee~~|~~ee~~<br>~~ee~~|0.051<br>~~ee~~<br>~~ee~~|
|D<br>~~es~~|2.40<br>~~es~~|~~es~~|2.72<br>~~es~~|0.094<br>~~es~~|~~es~~|0.107<br>~~es~~|
|E<br>~~es~~|0.49<br>~~es~~|~~es~~|0.70<br>~~es~~|0.019<br>~~es~~|~~es~~|0.027<br>~~es~~|
|F<br>~~es~~|0.61<br>~~es~~|~~es~~|0.88<br>~~es~~|0.024<br>~~es~~|~~es~~|0.034<br>~~es~~|
|F1<br>~~es~~|1.14<br>~~es~~|~~es~~|1.70<br>~~es~~|0.044<br>~~es~~|~~es~~|0.066<br>~~es~~|
|G<br>~~es~~|4.95<br>~~es~~|~~es~~|5.15<br>~~es~~|0.194<br>~~es~~|~~es~~|0.202<br>~~es~~|
|H2<br>~~a~~|10.00||10.40|0.393||0.409|
|L2<br>~~a~~||16.40<br>|||0.645<br>||
|L4<br>~~es~~|13.00<br>~~es~~|~~es~~|14.00<br>~~es~~|0.511<br>~~es~~|~~es~~|0.551<br>~~es~~|
|L5|2.65||2.95|0.104||0.116|
|L6<br>~~a~~|15.25<br>||15.75<br>|0.600<br>||0.620<br>|
|L7<br>~~es~~|6.20<br>~~es~~|~~es~~|6.60<br>~~es~~|0.244<br>~~es~~|~~es~~|0.259<br>~~es~~|
|L9<br>~~a~~|3.5||3.93|0.137||0.154|
|M<br>~~a~~||2.6<br>|||0.102<br>||
|Diam. I<br>~~es~~|3.75<br>~~es~~|~~es~~|3.85<br>~~es~~|0.147<br>~~es~~|~~es~~|0.151<br>~~es~~|



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**Ordering information** 

## **3** 

## **Ordering information** 

**Table 7. Ordering information Order code Marking Package Weight Base qty Delivery mode** STTH8S12D STTH8S12D TO-220AC 1.9 g 50 Tube ~~———~~ 

**4 Revision history** 

**Table 8. Document revision history** 

|**Date**<br>**Revision**<br>18-Sep-2014<br>1<br>~~—~~|Initial release|**Changes**|
|---|---|---|



DocID026655 Rev 1 

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**STTH8S12** 

## **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. 

© 2014 STMicroelectronics – All rights reserved 

8/8 DocID026655 Rev 1 



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