Seeking Radial power resistor

[treez]

Hello,
We are seeking a radial power resistor like this but bigger.....(this has a body of 16mm x 21mm)
Do you know of any?, it really does seem to be the biggest.
https://www.vishay.com/docs/50051/lto100.pdf

 

[D.A.(Tony)Stewart]

WHere is your spec for Watts, Ohms? Size? Normally axial square ceramic wirewound resistors are very inductive too. So include this in spec.

 

[treez]

Watts. Many as possible..Its for a universal load bank.....the resistors must be solder on/solder off, and no 4-screws type as in the HS series.
TO247 looks the biggest there is...I was hoping for something about twice as big in that kind of case shape & with the two legs, but doesn't seem to exist.
Ohms...will need 0.01 to 1k in e24 say.
inductance doesn't matter

 

[D.A.(Tony)Stewart]

your requirement is too vague.
Why radial?
Does size matter?
Why no limit to power?
Why onboard?
Why inductance does not matter ? No PWM?
What current?
What cost?
How many?

Can you learn to be more specific?

How about Nichrome Wire like in a toaster? Cut in length and use in Serial/Parallel to match R.

 

[FvM]

Did you realize that the high power capacity of the TO247 power resistor can be only utilized with an appropriate heat sink? So if you are planning a high resistor bank, you'll start do design the heat sink geometry required for the total power.

A bank of large air cooled resistors can work at higher surface temperature and may a more effective solution for your design problem.

 

[treez]

yes, they mounted on heatsink with fan stuck underneath the "chimney" created by the heatsinks.....
You get , in radial, TO220, then TO247, ....in that series, what's the next one up?

 

[FvM]

I think there's no similar next size. Welwyn has a TO247 series with 140 W rating (MPH140), also WDBR series m9ight be interesting. https://www.welwyn-tt.com/pdf/datasheet/WDBR.pdf

 

[D.A.(Tony)Stewart]

Is this just for factory load test that is removed after test?

 

[treez]

no its for a test dummy load in electronics lab.