0.1 Ohm 1w resistor prices why very large range?

[bunalmis]

I need 0.1 Ohm 1w resistor for pwm current sense applications.

Can you look to following link. Why prices too different?

Which one is better for the pwm current sense application.

Your Search Results | Farnell Ireland

 

[alexan_e]

Different material: Bare Metal, Ceramic, Solid Metal Nickel-Chrome or Manganese-Copper Alloy, Thick Film, Thin Film
Different Temperature Coefficient: ± 200ppm/°C, ± 100ppm/°C, ± 80ppm/°C, ± 70ppm/°C
Different Brands: PANASONIC , WELWYN , SUSUMU , VISHAY DALE ... etc
Different size: 2512, 2010, 1218 ...

Alex

 

[bunalmis]

Thank you for answer but response was not satisfactory for me.

Can you compare this two resistor? (Please look the link)

world-leading distributor of electronic and maintenance, repair and operations products. | Farnell Ireland

**broken link removed**

First one 0.94 Euro.
Second one 0.61 Euro.

When do you select first resistor?
When do you select second resistor?

Why?

 

[alexan_e]

I don't have a professional explanation in your question,
since the characteristics are almost the same (Temperature Coefficient and tolerance) I would go with the cheap one.

Any resistor would work for you, you should only care for the tolerance and Temperature Coefficient so that the measurement is more accurate.

Alex

 

[dick_freebird]

You go with the cheapest that meets your needs. But then
you need to know what your needs are, and some of them
may be unknown / unconsidered.