# Fast / Ultrafast Diode, 400 V, 8 A, Single, 1.3 V, 45 ns, 80 A

![Product image](https://novapart.co/image/farnell:2773808/)

**URL**: https://novapart.co/products/DURF840/fast-ultrafast-diode-400-v-8-a-single-13-45-ns-80
**SKU**: DURF840
**Manufacturer**: LITTELFUSE
**Category**: Semiconductors - Discretes || Diodes & Rectifiers || Fast & Ultrafast Recovery Rectifier Diodes
**Price**: €0.8070
**Stock**: 10+
**Lead Time**: 99 days (indicative)

## Description

Repetitive Reverse Voltage Vrrm Max:400V; Forward Current If(AV):8A; Diode Configuration:Single; Forward Voltage VF Max:1.3V; Reverse Recovery Time trr Max:45ns; Forward Surge Curr

## Specifications

| Parameter | Value |
|---|---|
| Svhc | To Be Advised |
| No. Of Pins | 2 Pin |
| Product Range | DUR |
| Qualification | - |
| Diode Case Style | ITO-220AC |
| Diode Configuration | Single |
| Forward Voltage Max | 1.3V |
| Forward Surge Current | 80A |
| Reverse Recovery Time | 45ns |
| Average Forward Current | 8A |
| Operating Temperature Max | 150°C |
| Repetitive Peak Reverse Voltage | 400V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2773808/)

**Ultrafast Recovery Rectifier DURF840, 8A, 400V, ITO-220AC** 

## DURF840 

## ~~**RoHS Pb e3** L100~~ 

## **Description** ~~Po~~ 

Littelfuse DUR series Ultrafast Recovery Rectifier is designed to meet the general requirements of commercial applications by providing low Trr, high-temperature, lowleakage and low forward voltage drop products. It is suitable for output rectifier, free-wheeling or boost diode in high-frequency power switching application such as switch mode power supply and DC-DC converters. 

## **Features** 

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Circuit Diagram<br>ee<br>1 2<br>Cathode Anode<br>**----- End of picture text -----**<br>


electrically isolated ITO220AC package 

- Ultra-fast switching 

- Low reverse leakage current • Pb-free E3 means 2nd level interconnect is 

- •   High surge current Pb-free and the terminal 

- capability finish material is tin(Sn) 

- •   Low forward voltage drop (IPC/JEDEC J-STD609A.01) 

- Single die in two-leaded, 

## **Applications** 

- Output rectifiers in switch •   Uninterruptible Power mode power supplies Supplies (UPS) (SMPS) and DC to DC •   Inductive heating and 

- converters 

   - Inductive heating and melting 

- Free-wheeling diode or •   Ultrasonic cleaners and 

- boost diode in converters welders 

- and motor control circuits 

- Anti-parallel diode for high frequency switching devices such as IGBT 

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Maximum Ratings<br>[<br>**----- End of picture text -----**<br>


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|||||||
|---|---|---|---|---|---|
|Characteristics|Symbol|Conditions|Max.|Unit|
|Peak Inverse Voltage|VRWM|-|400|V|
|Average Forward Current|IF(AV)|rectan50% duty cycle @Tgular wave formC =55 °C,|8|A|
|Peak One Cycle Non-Repetitive Surge Current ( Per Leg)|IFSM|8.3 ms, half sine pulse|80|A|
|Electrical Characteristics|
|[|
|Characteristics|Symbol|Conditions|Max.|Unit|
|Forward Voltage Drop|[1]|VF1|@8A, Pulse, TJ = 25 °C|1.3|V|
|VF2|@8A, Pulse, TJ = 125 °C|1.2|V|
|Reverse Current|[1]|IR1|@VR = Rated VR , TJ = 25 °C|10|μA|
|IR2|@VR = Rated VR , TJ = 125 °C|500|μA|
|Reverse Recovery Time|trr1|IF=500mA, IR=1A,and Irm=250mA|45|ns|

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


**Electrical Characteristics** ~~[~~ 

Footnote[1] : Pulse Width < 300μs, Duty Cycle <2% 

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/22/15 

**Ultrafast Recovery Rectifier DURF840, 8A, 400V, ITO-220AC** 

## **Thermal-Mechanical Specifications** 

|Characteristics|Symbol|Conditions|Specification|Unit|
|---|---|---|---|---|
|Junction Temperature|TJ|-|-55 to +150|°C|
|Storage Temperature|Tstg|-|-55 to +150|°C|
|Typical  Thermal<br>Resistance Junction to Case|RθJC|DC operation|5.0|°C/W|
|Approximate Weight|wt|-|1.6|g|
|Case Style|-|ITO-220AC|-|-|



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Figure 1:  Typical Forward Characteristics<br>**----- End of picture text -----**<br>


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Figure 2:  Typical Reverse Characteristics<br>**----- End of picture text -----**<br>


**Figure 3:  Typical Junction Capacitance** 

## **Part Numbering and Marking System** 

***xxxxx is YYWWL** DUR        = Device Type F              = Package type po 8              = Forward Current (8A) DURF840 40            = Reverse Voltage (400V) LF            = Littelfuse LF xxxxx YY            = Year WW          = Week | L               = Lot Number 

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/22/15 

**Ultrafast Recovery Rectifier DURF840, 8A, 400V, ITO-220AC** 

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Packing Options<br>P o<br>Part Number Marking Packing Mode M.O.Q<br>DURF840 DURF840 50pcs / Tube 1000<br>Dimensions-Package ITO-220AC<br>**----- End of picture text -----**<br>


|Symbol<br>A<br>A1<br>A2<br>A3<br>b<br>~~es~~<br>~~Se~~<br>~~es~~|Symbol<br>A<br>A1<br>A2<br>A3<br>b<br>~~es~~<br>~~Se~~<br>~~es~~|Millimeters<br>Min<br>Typ<br>Max<br>4.30<br>4.50<br>4.70<br>1.10<br>1.30<br>1.50<br>2.80<br>3.00<br>3.20<br>2.50<br>2.70<br>2.90<br>0.50<br>0.60<br>0.75<br>Po<br>~~ee~~<br>~~ee~~<br>~~ee~~|Millimeters<br>Min<br>Typ<br>Max<br>4.30<br>4.50<br>4.70<br>1.10<br>1.30<br>1.50<br>2.80<br>3.00<br>3.20<br>2.50<br>2.70<br>2.90<br>0.50<br>0.60<br>0.75<br>Po<br>~~ee~~<br>~~ee~~<br>~~ee~~|
|---|---|---|---|
||b1|1.10|1.20<br>1.35|
|b2<br>1.50<br>1.60<br>1.75<br>c<br>0.55<br>0.60<br>0.75<br>D<br>14.80<br>15.00<br>15.20<br>E<br>9.96<br>10.16<br>10.36<br>e<br>-<br>2.55<br>-<br>e1<br>-<br>5.10<br>-<br>H1<br>6.50<br>6.70<br>6.90<br>L<br>12.70<br>13.20<br>13.70<br>~~Se~~<br>~~ee~~<br>~~——~~~~**+**—~~||||
||L1|1.60|1.80<br>2.00|
||L2<br>L3<br>L4<br>øP1<br>øP2<br>Q<br>θ1<br>θ2<br>θ3<br>θ4<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.80<br>0.60<br>-<br>3.30<br>2.99<br>2.50<br>-<br>-<br>-<br>-|1.00<br>1.20<br>0.80<br>1.00<br>1.10<br>1.50<br>3.50<br>3.70<br>3.19<br>3.39<br>2.70<br>2.90<br>5°<br>-<br>4°<br>-<br>10°<br>-<br>5°<br>-|
||θ5<br>-<br>~~a~~||5°<br>-<br>~~Cd~~|



**Tube Specification ITO-220AC** 

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7mm<br>530mm<br>Lo<br>32mm<br>**----- End of picture text -----**<br>


© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/22/15 



## Links

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- [Supplier page](https://es.farnell.com/littelfuse/durf840/rectifier-single-8a-400v-ito-220ac/dp/2773808)
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