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Old 24th December 2007, 03:17 PM   #1
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Default OPA2134 in Bangalore!!

Please guys I need OPA2134 urgently. Where can get these in Bangalore.
Do u guys Know any shop in SP road where I can get these.
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Old 24th December 2007, 04:57 PM   #2
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I think ...........quite unlikely ! I spent a whole morning searching for parts in the Bangalore market ( is that called SJ road or SJP road ? ).
I could not find anything I wanted. OPA2134 would then be even more unlikely ! IF anyone does have it , it would cost a bomb as it is so rare around here. I bought IRF9240 for three times the price they charge in Mumbai ! I didn't know the Mumbai price when I bought them in Bangalore.

Better order it from Digikey. It most probably wouldn't cost you any more than if you could get it here. It would be duty free of course.
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Old 24th December 2007, 05:15 PM   #3
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If you're only looking for a small quantity and don't mind waiting for them to travel half way around the globe; I can help.

I have around 20pcs max I would be willing to let go. First class mail would be around ~4USD.
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Old 25th December 2007, 07:34 AM   #4
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Thanks for the quick reply guys. What are the payment options available at digikey? How many days will they take deliver to India?
Right now my requirement are 10pcs only, but I would like to order around 50pcs atleast.
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Old 25th December 2007, 12:23 PM   #5
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There are better op-amps than the aging OPA2134 available now - in particular, the Natsemi LME49720 dominates it completely in every specification.

However, both of these are hard to find in Bangalore, unless you're willing to buy in quantity, in which case Arrow or any distributor of TI/NatSemi will be happy to sell them to you. I've also heard that R.S. Components in Manipal Centre will sell single unit qty of just about anything, at a huge markup.

I'd advise using the TL072/062 or TL074/064 (widely available at S.P Road for about Rs.4-6 each) with a 8DIP/14DIP machined Augat socket, and swapping out for high-end opamps later when you get hold of them.
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Old 25th December 2007, 12:37 PM   #6
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Default OPA2134UA

Hi grease61181,

I have OPA2134UA, 50 pcs or more if you want, the price is US$7.35 each, paypal accepted, MB, western union, moneygram or any available is ok with you, thanks.

all the best,
a'af
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Old 25th December 2007, 02:30 PM   #7
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Your best bet and fastest economical method is to buy 50 from Digikey. 50 pieces costs about $2.10 each and shipping by Fedex to India is about $85 with packing etc. They will handle customs etc. Without any duty( quite likely ) it will cost you about $190/- . I assume you will pay by credit card. Each chip will effectively cost $3.80 . Even with duty added it should not be more than $5.50 each. I think they add customs duty to cost plus freight but with customs anything can happen. Very good chance that it will come duty free.
I paid Rs4,000/- duty for Rs15,000 worth of heat sinks. It was a HUGE box ! You package will be very small.
You should have the chips at your door step whitin a week.

I've bought many times from Digikey. Very good .

Edit : Take into account Christmas holidays when figuring out shipping dates.
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Old 26th December 2007, 08:36 AM   #8
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Thank you guys. Really helpful.
Ok I will go for some TL072 or NE5532 for now and Later order some OPA2134 or something.

Which do you guys think is better among these two?
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Old 26th December 2007, 12:07 PM   #9
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> TL072 or NE5532
> Which do you guys think is better among these two?

Hard to say - each has its own unique sonics. In fact, TI TL07x made in Portugal has its own sonics which are different from current production ST TL07x made in China. The TI version differs subtly from the ST version - IMHO, the TI version is harmonically better.

My advise would be to buy all the different versions of these opamps and try them out - it's possible that the NE5532 will trump the TL07x for most audio applications.
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Old 26th December 2007, 01:16 PM   #10
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The TL0xx series are FET input ( low input bias current ) and NE553x are bipolar with significant bias current. So external resistor values might matter and make a direct exchange difficult in some circuits.

Sonically NE553x is 'considered' better ( also lower noise ) . You can try it for yourself.
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