Announcement

Collapse
No announcement yet.

SXE Series not recommended for new designs?

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    SXE Series not recommended for new designs?

    I stumbled across this page http://www.chemi-con.co.jp/cgi-bin/C...e.cgi?lang=eng and found that the SXE Series were deleted from the catalog, but datasheets were still available, meaning the SXE Series were still in production. Are the SXE Series not recommended for new designs, and are they going to be discontinued in the future? (These were my favourites!)
    My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.
    Tags: None
    #2
    Re: SXE Series not recommended for new designs?

    Are the SXE Series not recommended for new designs, and are they going to be discontinued in the future?
    That is what this means. Like many other vendors, UCC is warning users of the series (I think the KMF series is also being discontinued soon) that they need either to do a lifetime buy or do the work to switch to a more modern series. They also are warning design teams not to design in a part that will soon be discontinued.
    PeteS in CA

    Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
    ****************************
    To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
    ****************************

    Comment

      #3
      Re: SXE Series not recommended for new designs?

      I think the KY series would most likely replace my favourite SXE series.
      My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

      Comment

        #4
        Re: SXE Series not recommended for new designs?

        KY and KZE look like good solid series. KZH looks interesting, too.
        PeteS in CA

        Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
        ****************************
        To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
        ****************************

        Comment

          #5
          Re: SXE Series not recommended for new designs?

          Originally posted by PeteS in CA
          That is what this means. Like many other vendors, UCC is warning users of the series (I think the KMF series is also being discontinued soon) that they need either to do a lifetime buy or do the work to switch to a more modern series. They also are warning design teams not to design in a part that will soon be discontinued.

          cant manu's just switch to new series?
          Specs
          DFI AM2 LANPARTY UT NF590 SLI-M2R/G
          X2 3800+EE AM2
          2x1GB OCZ PC2-6400 Platinum XTC
          XFX 7900GS
          Maxtor 6L250S0
          Maxtor 6V300F0
          Western Digital WD2500JS
          Mushkin HP-550(Cap/Filter Modded)

          Cooling
          Swiftech Apogee
          Swiftech MCW-60
          Swiftech MCP-600
          HardwareLabes Black Ice Extreme 2

          Comment

            #6
            Re: SXE Series not recommended for new designs?

            Component engineering and sustaining engineering are a bit more meticulous than that. New parts need to be tested in each existing product. Plus the phase-in needs to be managed properly - if a product has an array of caps in parallel, you probably don't want to mix two different series (e.g. if you mix PSs and HEs of the same C and V ratings, the ripple current sharing will be uneven).
            PeteS in CA

            Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
            ****************************
            To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
            ****************************

            Comment

              #7
              Re: SXE Series not recommended for new designs?

              if a product has an array of caps in parallel, you probably don't want to mix two different series (e.g. if you mix PSs and HEs of the same C and V ratings, the ripple current sharing will be uneven).
              many manufacturers do that on vcore - some fujitsu some MCZ etc. will there be a useful improvement to replace the odd ones with same series, or are we just talking about capacitor endurance etc.
              Last edited by willawake; 05-14-2006, 03:34 AM.
              capacitor lab yachtmati techmati

              Comment

                #8
                Re: SXE Series not recommended for new designs?

                Re my hypothetical, it was based on a real situation that came up last week where I work, and the array is of identical caps. OTOH, as you point out (and I forgot), there are occasions where designers intentionally select different types, locating them according to their intended function in the circuit (cap networks for handling large magnitude, high di/dt, current transients come to mind).
                PeteS in CA

                Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
                ****************************
                To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
                ****************************

                Comment

                  #9
                  Re: SXE Series not recommended for new designs?

                  yeh but i am talking about a row of caps on output of vcore. some fujitsu 4v 560uf, some mcz 820uf 6.3v all in parallel.
                  capacitor lab yachtmati techmati

                  Comment

                    #10
                    Re: SXE Series not recommended for new designs?

                    WestSide's Q was more general. Arrays like what you describe - lytics plus polymers plus MLCCs are chosen and positioned so that the power "system" from the VRM to the uP die will be able handle a high magnitude, very fast current transient. The capacity, impedance and location of each part are chosen to take care of each part of the transient. E.g., low inductance MLCCs are closest to the chip; the lytics close to the VRM handled both the normal ripple current and are an energy reservoir (albeit somewhat slow, compared to the MLCCs) for handling most of the energy demand of the transient. Sun had a computer program to select the quantities of each type, and was even considering, ca. 1998, designing some capacitance into the SPARC processor die to compensate for the inductance inherent in the bondwires.
                    PeteS in CA

                    Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
                    ****************************
                    To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
                    ****************************

                    Comment

                      #11
                      Re: SXE Series not recommended for new designs?

                      I did a comparison to the SXE Series with KY Series units, which I would be inclined to use when the SXE Series are discontinued.
                      Attached Files
                      My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

                      Comment

                        #12
                        Re: SXE Series not recommended for new designs?

                        Originally posted by PeteS in CA
                        designing some capacitance into the SPARC processor die to compensate for the inductance inherent in the bondwires.
                        It was my dream to do this kind of design 15 years ago.
                        Unfortunately my smarts/education quotient was severely lacking.
                        Jim

                        Comment

                          #13
                          Re: SXE Series not recommended for new designs?

                          Update: http://www.chemi-con.co.jp/english/c.../daigae_e.html
                          SXE Series is discontinued; recommended replacements are KY (as I predicted) and LXV Series.
                          My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

                          Comment

                            #14
                            Re: SXE Series not recommended for new designs?

                            Unless I wanted the slightly higher ESR or needed a 100V rated part, I'd choose the LXZ series over the LXV - lower ESR and better life rating (5K hours for LXV and 8K hours for LXZ, IIRC).
                            PeteS in CA

                            Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
                            ****************************
                            To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
                            ****************************

                            Comment

                              #15
                              Re: SXE Series not recommended for new designs?

                              SXE and LXZ are both available in my area. i don't know why i would choose them over the LXZ, but i see lot of them on audio equipment/hardware.

                              the SXE Series were deleted from the catalog, but datasheets were still available, meaning the SXE Series were still in production.
                              i don't like that if company decided to stop the production of certain seies, they decide to delete the datasheets too. sometimes it's impossible at all to find the dataheet for a discontinued product.
                              days are so short when you actually do something..

                              Comment

                              Previous template Next
                              Working...
                              X