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🔌General Home Automation => Other Automation Systems => Powerline Control Reliability => Topic started by: JeffVolp on April 08, 2011, 10:40:45 AM

Title: Component Prices
Post by: JeffVolp on April 08, 2011, 10:40:45 AM
I went to place an order for another batch of transformers for the backlit XTBM and forthcoming XTBM pro.  The Digikey price jumped from $8.53 each to $18.07 in unit quantity since February.  Obviously, the price comes down at higher quantities ($11.89 at 25 pieces), but the price has still more than doubled.  When I contacted Signal Transformer directly about the huge price increase, they said they had received another report of very high prices at Digikey, and that the transformers could be bought directly from Signal for a much lower price.

I have been seeing similar price increases on some other components.  The IRL630A has been discontinued by Fairchild.  They were $.87 each.  The least expensive IRL630 stocked by Mouser is $2.28, and its specifications arenít quite as good as the discontinued Fairchild part.  Fortunately, I made a major purchase while the Fairchild part was still available, so my stock is OK for now.

Some of the capacitors have almost doubled in price over the last year.  I know the value of the dollar has been falling and the cost of raw materials is going up, but price increases like this are more than I expected.

Update:  Further communication between Signal and Digikey identified their price as being incorrect, and it is being adjusted to the same as purchasing directly from Signal.

Jeff
Title: Re: Component Prices
Post by: Brian H on April 08, 2011, 12:23:05 PM
With all the distruction in Japan. I expect to see other parts made there scarce or at a much higher price.
Title: Re: Component Prices
Post by: Knightrider on April 08, 2011, 09:04:13 PM
Don't know about the electronics supply chain, but here in the world of construction, we've received notice that when diesel hit $4.50/gallon our supplies are going up 28%.  I imagine that something similar is going on in other fields.
Title: Re: Component Prices
Post by: JeffVolp on April 09, 2011, 12:50:59 AM

Boy, did this thread ever get hijacked...

Jeff
Title: Re: Component Prices
Post by: Knightrider on April 09, 2011, 08:55:34 PM
not Jeff.

I hijacked this thread, and the corn thing was all me.  I since deleted said post to get this thread back on track.

I humbly implore the forgiveness of all involved.
Title: Re: Component Prices
Post by: HA Dave on April 09, 2011, 09:35:30 PM
I since deleted said post to get this thread back on track.

Well if you think that will somehow help or please Jeff.... I happily did the same.
Title: Re: Component Prices
Post by: JeffVolp on April 09, 2011, 10:27:28 PM
I've been doing this XTB stuff for 5 years.  Except for the first year when I adjusted for kits being priced under my actual cost, prices have been stable.  Over that period some component prices have been inching up, but usually less than ten percent at a time.

What made me start this thread was the fact that the price of the power transformer had more than doubled.  Later that turned out to be an error by the distributor, but several other components have also doubled in cost over the last year.  And one component ordered last summer is still on backorder with no firm delivery date.

When I designed these devices, all components were readily available stock items at Mouser or Digikey.  Now some are being discontinued, and many are on backorder.  It is a challenge to maintain an adequate inventory to produce these units.  I'm sure other manufacturers are facing the same issues.

Update:  Just got a projected shipping date on that backordered component for mid-July.  And the factory lead time is now 92 weeks.  Wow!

Jeff
Title: Re: Component Prices
Post by: dhouston on June 20, 2011, 08:52:47 PM
Jeff,

I've noticed a similar increase in prices as well as an increased number of part numbers being discontinued. I've been out-of-action for over a year due to health issues and was really surprised by some of the changes.

My guess is that distributors like Mouser and Digikey are seeing a big drop in business due to the worldwide economic downturn and are trying to compensate for it.
Title: Re: Component Prices
Post by: HA Dave on June 20, 2011, 09:22:15 PM
......... seeing a big drop in business due to the worldwide economic downturn and are trying to compensate for it.

I had nothing to do with that post Jeff.  rofl
Title: Re: Component Prices
Post by: JeffVolp on June 21, 2011, 01:07:19 AM
My guess is that distributors like Mouser and Digikey are seeing a big drop in business due to the worldwide economic downturn and are trying to compensate for it.

Hi Dave,

Good to see a post from you...

That could be a factor even at the manufacturer level.  And the rising cost of copper and other raw materials is probably also rippling into the price of the components.

You may have noticed that the inventory isn't as deep at the suppliers as it was a couple years ago.  Mouser had been excellent, but now I often see a couple of backorders on a typical order.   And with some lead times being a year or more, I worry about supply problems.

Jeff
Title: Re: Component Prices
Post by: HA Dave on June 21, 2011, 10:29:48 PM
..... I worry about supply problems.
Me too.
Title: Re: Component Prices
Post by: JeffVolp on July 20, 2011, 05:12:20 PM
More supply problems...

The big honking inductor in the XTB-IIR went from $2.22 at my last order to $5.22 at 100 pieces, and when the inventory is gone, they will be special order only (500 pieces minimum!)  I can't find stock elsewhere or an equivalent that will fit, so this may force another PCB change.

I'm only beginning the ordering process, and I wonder how many other surprises await...

At least my order of .22uF line-rated capacitors ordered last summer were finally delivered.

Update:  I just found out that Polycase raised their prices and now has a 100 piece minimum for the light colored cases used for the XTB, XTBR, and pending XTB-232.

I'm getting close to throwing in the towel on the 232 due to component issues.

Jeff
Title: Re: Component Prices
Post by: Brian H on July 20, 2011, 06:26:06 PM
Sorry to read about the supply problems.
I honestly don't see much getting better these days.
Guess it is who is doing the information spinning.  ???
Title: Re: Component Prices
Post by: dave w on July 20, 2011, 07:28:58 PM
I honestly don't see much getting better these days.
Yeah.  I think we need to fasten seat belts because it's going to get real bumpy.
Title: Re: Component Prices
Post by: Noam on July 20, 2011, 07:40:43 PM
Boy, am I glad I got my XTB-IIR LAST summer!  ;)

Jeff - Good luck with the component search. You sure know a lot more about this than I do, so I really have no helpful advice to offer. sorry.
Title: Re: Component Prices
Post by: JeffVolp on July 28, 2011, 09:40:32 AM
More component "sticker shock"...

I've been working on another round of orders.  Most components come from Mouser, but I use several other distributors too.  Many of the components have increased in price - some substantially.  Not one price has gone down.  Some examples:

Kemet Capacitors from Mouser:

   1000 pF 10%   .13 to .32 below 100 pieces.  How about a 250% increase!
   2700 pF 5%   .33 to .48
   5600 pF 5%   .40 to .67
   6800 pf 5%   .66 to .82
   .47 uF 20%   .29 to .49

Fairchild zener diodes from .04 to .10.  Another 250% increase.

Analog devices AD817AN op-amp from 4.05 to 5.54 at Digikey.

Some of these increases can be mitigated by buying even larger quantities than normal.  Others will just have to ripple down to the kit prices.

(Several of the items are back ordered until October or November.)

Jeff
Title: Re: Component Prices
Post by: Brian H on July 28, 2011, 10:40:27 AM
Unfortunately so true.
The company my Brother works for is finding the same price jumps and back orders.
In his case. Really difficult to price out a new product for the overseas conglomerate. That want exact parts costs justified.  ???
Title: Re: Component Prices
Post by: dbemowsk on July 31, 2011, 11:46:15 PM
Jeff,

I haven't  compared prices at the parts outlets, but one that I have used for some parts has been Jameco.  I have no idea if they have the parts you need, but it may be worth a look.
Title: Re: Component Prices
Post by: JeffVolp on August 01, 2011, 09:21:29 AM
I haven't compared prices at the parts outlets, but one that I have used for some parts has been Jameco.

Jameco is a good place for hobbyists, and can also have better prices than the distributors at low quantities.  I usually order large enough quantities so that the distributor price is equivalent or even lower than the Jameco price.  But I have purchased some components from them.

Unfortunately, the components that I have trouble with are not carried by Jameco.

Thanks for the suggestion though.  Before I place these orders, I will check Jameco again.

Jeff
Title: Re: Component Prices
Post by: JeffVolp on August 08, 2011, 05:48:12 PM

Just an update:  Prices for the XTB-IIR components increased about $13 since last year.  Increases for the other units were less.

Jeff
Title: Re: Component Prices
Post by: dave w on August 08, 2011, 08:41:26 PM

Just an update:  Prices for the XTB-IIR components increased about $13 since last year. 


He who waits   B:(
Title: Re: Component Prices
Post by: dhouston on August 09, 2011, 07:32:12 AM
Just an update:  Prices for the XTB-IIR components increased about $13 since last year.  Increases for the other units were less.
This will get worse as the dollar weakens vs Eastern currencies.
Title: Re: Component Prices
Post by: JeffVolp on August 20, 2011, 12:06:47 PM

Update:  First increase in XTB-IIR price since its introduction:  + $10.

I held it to that by finding better prices than Mouser on some components.

No increase on the others ... yet.

Jeff