DSA1-18D

**DSA 1** 

## **Avalanche Diode** 

**V** RRM **= 1200-1800 V I = 7 A** F(RMS) **I** FAVM **= 2.3 A** 

## Preliminary data 

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|---|---|---|---|
|VRSM|V(BR)min|VRRM|Type|
|V|V|V|
|1300|1300|1200|DSA 1-12D|
|1700|1750|1600|DSA 1-16D|
|1900|1950|1800|DSA 1-18D|

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


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


A = Anode, C = Cathode 

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|---|---|---|---|---|---|---|---|---|---|
|Symbol|Conditions|Maximum Ratings|
|IFRMS|TVJ = TVJM|7|A|
|IFAVM|Tamb = 45°C; RthJA = 38 K/W; 180° sine|2.3|A|
|Tamb = 45°C; RthJA = 80 K/W; 180° sine|1.3|A|
|PRSM|TVJM, tp = 10 µs|1.6|kW|
|IFSM|TVJ = 45°C;|t = 10 ms|(50 Hz), sine|110|A|
|t = 8.3 ms|(60 Hz), sine|118|
|TVJ = 150°C; t = 10 ms|(50 Hz), sine|100|A|
|t = 8.3 ms|(60 Hz), sine|104|
|I|[2]|t|TVJ = 45°C;|t = 10 ms|(50 Hz), sine|60|A|[2]|s|
|t = 8.3 ms|(60 Hz), sine|58|
|TVJ = 150°C; t = 10 ms|(50 Hz), sine|50|A|[2]|s|
|t = 8.3 ms|(60 Hz), sine|45|
|TVJ|-40...+150|°C|
|TVJM|150|°C|
|Tstg|-40...+150|°C|
|Weight|typical|0.8|g|

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## **Features** 

- Plastic standard package 

- Planar passivated chips 

## **Applications** 

- Low power rectifi ers 

- Field supply for DC motors 

- Power supplies 

- High voltage rectifi ers 

## **Advantages** 

- Space and weight savings 

- Simple PCB mounting 

- Improved temperature & power cycling 

- Reduced protection circuits 

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|---|---|---|---|---|---|---|---|
|Dimensions in mm (1 mm = 0.0394")|
|Symbol|Conditions|Characteristic Values|
|1.2|
|typ.|max.|
|7.5|
|IR|VR = VRRM|TVJ =   TVJM|0.7|mA|
|VF|IF = 7 A|TVJ = 25°C|1.34|V|
|ca|
|VT0|For power-loss calculations only|0.8|V|
|rT|TVJ = TVJM|67|mΩ|4|
|1|
|RthJA|Forced air cooling with 1.5 m/s, Tamb = 45°C|38|K/W|10|
|Soldered on to PC board, Tamb = 45°C|80|K/W|
|dS|Creepage distance on surface|8.5|mm|i|=|a|r|
|dA|Strike distance through air|6.7|mm|
|a|Max. allowable acceleration|100|m/s|[2]|
|Data according to IEC 60747|
|Disclaimer Notice|
|Information furnished is believed to be accurate and reliable. However, users should independently evaluate|
|n|7|
|the suitability of and test each product selected for their own applications. Littelfuse products are not|
|designed for, and may not be used in, all applications. Read complete Disclaimer Notice Disclaimer Notice|||
|www.littelfuse.com/disclaimer-electronics..|0.8|0.5|

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Data according to IEC 60747 

## **Disclaimer Notice** 

Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.. 

IXYS reserves the right to change limits, test conditions and dimensions. 

20191128c 

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