[SOLVED] alternative inrush resistor

[sjeggefjes]

Hi, I have an defektive Vincotech S30814-Q791-A inrush resistor. https://www.vincotech.com/products/inrush-resistor.html,

• R = 100 Ω E(pulse) = 66 J
• Pcont = 4 W
• SIL / THT
• Thick film technology
• 750 V

The resistor is mecanicly broken after the inverter was droped.
I'm not able to get hold of this resistor in smal numbers and wonder if anyone can recomend a replacement of this rersistor?

 

[BradtheRad]

You may need to assemble it from two or more resistors which are available. Series, parallel, whatever. Increasing the power rating could be a good idea while you're at it.

 

[sjeggefjes]

So I can just replace this with a resistor with the same resistance and equal or higher power rating? So there are no special functionality on theese inrush resistors?

 

[BradtheRad]

The resistor appears flat at vincotech's website. Like a fin of a heat sink shaped to dissipate heat. The description makes it sound special but I don't see why 100 ohms of whatever you can get isn't satisfactory. I suppose it's a good idea to create access among your arrangement for air cooling, and fasten it firmly to the enclosure.

 

[sjeggefjes]

Thank you for the claification. This is not my strongest field of knowledge so this helps alot.