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QT113-D Touch Sensor — Parallax Forums

QT113-D Touch Sensor

m_fabio2m_fabio2 Posts: 49
edited 2006-02-17 12:32 in General Discussion
I see the QT113-D Touch Sensor has been discontinued.
Is there a replacement somewhere ?

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2006-02-06 20:51
    Hello,

    ·· The problem is availability.· They're only available in high quantities from Digi-Key and one other distributor.

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    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • Piper984Piper984 Posts: 74
    edited 2006-02-15 17:56
    Hi Chris,

    I am using 8 QT113s in a design with a BS2, and I have not had·any trouble ordering small quanties from Digikey.· Or do you mean Parallax has discontinued selling the Qprox sensors due to supplier issues?· Hopefully QProx hasn't discontinued the QT113 dip package. I just·got my design working!·:0

    Regards,
    ·
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2006-02-15 19:09
    Interesting...When I checked the Digi-Key website they were a non-stock item requiring a minimum purchase to special order.· Has this changed in the last 2 or 3 weeks?

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    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • Paul Sr.Paul Sr. Posts: 435
    edited 2006-02-15 19:18
    Looks like the one they (DigiKey) stock is the QT113-DG (Part #427-1095-ND) and it is RoHS Compliant - the non-stock QT113-D is RoHS NON-Compliant.

    Otherwise, from their site, it looks like it is identical.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2006-02-15 19:25
    Okay,

    ·· I just checked their website and they now show a QT113DG part, which appears to be a lead-free part.· Checking the datasheet on the manufacturer website no longer shows the original part in the list, but shows the DG part.· I will investigate this further since the DG part appears to be more expensive.

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    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • Piper984Piper984 Posts: 74
    edited 2006-02-15 19:40
    Hi Chris,

    I received a note from QProx about a month or two ago stating that they were replacing all or most of their ICs with RoHS compliant versions. Perhaps Digikey just didn't get their site updated when you checked last time. I have been purchasing about 24 of the 113s every couple of months for about 7 months without issue from Digikey.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2006-02-15 20:23
    So did you switch from the QT113D to the QT113DG?· DigiKey still shows the QT113D as Non-Stock, however QPROX indicates it's no longer a valid part.· Also there seems to be a price difference (increase) in the Lead Free part.

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    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • Piper984Piper984 Posts: 74
    edited 2006-02-15 20:34
    Yes, I don't have the packing slip or ICs in front of me, but I am pretty sure the last order I received was the DG. Other than price, and RoHS, it's the same part. I use the 113 since it has 30ms response time. They make some multi-channel ICs, but they aren't as deterministic as just using 8 of the QT113's, so that's what I've been doing.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2006-02-17 01:39
    I will follow up on this to see if we can bring this part back.· The price difference may or may not be a factor.

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    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • OrionOrion Posts: 236
    edited 2006-02-17 12:32
    You can get the QT160 from digikey in singles. It's the six channel touch sensor with the same style output.
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