Recognize these inrush current limiting devices?

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SUMMARY

The discussion centers on identifying inrush current limiting devices, specifically a component marked with a double-V logo, which is associated with Littelfuse. Participants suggest that the component may be a PTC (resettable fuse) and reference a transient voltage suppression (TVS) diode. The part number "TS250-130F-RA-N-2" from Littelfuse is highlighted as a potential match. Users are encouraged to utilize Google Images for further identification.

PREREQUISITES
  • Understanding of inrush current limiting devices
  • Familiarity with PTC (resettable fuses)
  • Knowledge of transient voltage suppression (TVS) diodes
  • Experience with component identification techniques
NEXT STEPS
  • Research Littelfuse products, specifically the TS250-130F-RA-N-2
  • Learn about the function and application of PTC resettable fuses
  • Explore transient voltage suppression (TVS) diode specifications and uses
  • Investigate techniques for identifying electronic components through image searches
USEFUL FOR

Electronics engineers, circuit designers, and technicians involved in troubleshooting and identifying electronic components, particularly those working with inrush current limiting devices.

phyzguy
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TL;DR
Help me recognize these inrush current limiting devices
I have a circuit board, and one of these inrush current limiting devices (yellow arrows) has failed. Does anyone recognize them? Failing that, does anyone recognize the logo that looks like a letter V and an upside down V superimposed? I have searched in several places, but have been unable to identify them.
CSAT3B_board.png
 
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phyzguy said:
TL;DR Summary: Help me recognize these inrush current limiting devices

I have searched in several places, but have been unable to identify them
Perhaps clamping diode ie a TVS ( transient voltage suppression ) .
the 103 could mean 1000 watts but that's a guess.
 
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Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?

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