Tweakers' Asylum

RE: Ask Vishay, sounds like marketing speak to me

32.210.164.98

In Reply to: RE: Ask Vishay, sounds like marketing speak to me posted by 13th Duke of Wymbourne on January 01, 2020 at 15:18:15

Very first hit on The Google.

Yeah, not for that specific model of resistor, but the physics doesn't care about marketing.
https://www.vishay.com/docs/60107/freqresp.pdf (Open in New Window)

Follow Ups:

RE: Ask Vishay, sounds like marketing speak to me - 13th Duke of Wymbourne 12:59:48 01/02/20 (3)
A nice app note but it would be a huge stretch for Vishay to extrapolate that to their leaded metal film resistors or for the casual reader to make that assumption.

13DoW
- RE: Ask Vishay, sounds like marketing speak to me - CG 15:41:12 01/02/20 (2)
  Inductance and capacitance effects are somehow different with leaded parts?
  That's a new one on me.
  Now quitting before I shame myself further. A fitting end to my online commenting.
  Best wishes to all in the New Year and for years to come.
  
  Edits: 01/02/20
  - RE: Ask Vishay, sounds like marketing speak to me - Hornlover 08:50:19 01/07/20 (0)
    Yes, there is a big difference. Look at the info on the SM parts. See how much better the tiny 0201 part performs at high frequencies compared to the 0402 or 0603? A 1/4 watt leaded part is is at least 12 times longer, 10 times the width, and then you add lead inductance. Yes, there is a big difference. That said, a 1/4 watt leaded part will still be fine up to at least 100MHz. Not a concern for audio.
  - RE: Ask Vishay, sounds like marketing speak to me - 13th Duke of Wymbourne 18:54:07 01/02/20 (0)
    Very roughly each mm of wire has a self inductance of 1nH. So, a leaded resistor with a 10mm long connection at each end will have 20nH minimum. The app note you linked shows the equivalent inductance for surface mount resistors to be 0.1 - 0.2nH. Not a relevant difference for audio but definitely relevant at RF.
    
    13DoW

Post a Followup:

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.

This post is made possible by the generous support of people like you and our sponsors:

Schiit Audio