Help to identify component

RS232 · 23rd December 2012, 11:49 PM

Hi all
Need urgent help to identify one component in a powered monitor for my local community center.
The part in question is marked 206B - J123B - JRC and is a smd opamp or so I thing.
The c. center needs it working for the Christmas party on the 25th so any help is welcome.

Ric

Moon Track · 24th December 2012, 12:07 AM

Most like NJM2068.

agdr · 24th December 2012, 12:10 AM

Could that "B" be an "8"? If so that may be a JRC2068 = NJM2068 = RS components #713-9824 in the UK

Buy Operational Amplifiers OP Amp Dual GP 18V 8-Pin DMP New Japan Radio NJM2068M online from RS for next day delivery.

Mouser also has it in various packages:

njm2068 Operational Amplifiers - Op Amps | Mouser

Edit: Sorry about the double post - I was composing while Moon Track was posting.

RS232 · 24th December 2012, 12:18 AM

Thank you guys, I had a closer look on the little critter and is in fact a 2068.
Now my problem is were to get some on Christmas eve...

Ric

agdr · 24th December 2012, 12:33 AM

That is the same op amp used in the gain stage of the O2 headphone amplifier, just the DIP8 version:

EHP-O2 Award Winning Portable Headphone Amplifier | Epiphany Acoustics

Maybe you could tack solder an DIP-8 socket over the surface mount pads if someone nearby posts with a spare. The pinout is the same with the dip and smd versions.

sofaspud · 24th December 2012, 12:40 AM

Odds are probably good that the OPA2277 will work. At this late hour it might be a take-what-you-can-get situation.

agdr · 24th December 2012, 01:11 AM

sofaspud has a good point! The NE5532 would also substitute in a lot of situations. Same pinout:

Farnell Export

Buy Operational Amplifiers NE5532A dual 10MHz 9V/uS op amp, SOIC8 Texas Instruments NE5532AD online from RS for next day delivery.

jaycee · 24th December 2012, 08:01 AM

Pretty much any dual opamp should go in there and the thing should work - BUT, you should be thinking about what fried it.

JMFahey · 24th December 2012, 08:23 AM

Quote:

BUT, you should be thinking about what fried it.

And, even before that, whether it's actually fried. Why do you think it is?

RS232 · 25th December 2012, 10:54 AM

Thank you all guys
What caused the failure was one of the guys from the band used one of the amplified outputs from the mixing table in to the line in socket.
This monitor is a piece of junk, the amp inside is actually a chip amp (TDA7294).
Well I got it working, I bypassed the amp and is now been used as a passive monitor till I get the parts from farnell.

Thanks and Merry Christmas to all
Ric

23rd December 2012, 11:49 PM	#1
RS232 diyAudio Member Join Date: Jan 2006 Location: Swindon	Help to identify component Hi all Need urgent help to identify one component in a powered monitor for my local community center. The part in question is marked 206B - J123B - JRC and is a smd opamp or so I thing. The c. center needs it working for the Christmas party on the 25th so any help is welcome. Ric

24th December 2012, 12:40 AM	#6
sofaspud diyAudio Member Join Date: Nov 2005 Location: San Antonio	Odds are probably good that the OPA2277 will work. At this late hour it might be a take-what-you-can-get situation. __________________ It is error only, and not truth, that shrinks from enquiry. - Thomas Paine

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24th December 2012, 12:07 AM	#2
Moon Track diyAudio Member Join Date: Mar 2012	Most like NJM2068.

24th December 2012, 12:10 AM	#3
agdr diyAudio Member Join Date: Sep 2010	Could that "B" be an "8"? If so that may be a JRC2068 = NJM2068 = RS components #713-9824 in the UK Buy Operational Amplifiers OP Amp Dual GP 18V 8-Pin DMP New Japan Radio NJM2068M online from RS for next day delivery. Mouser also has it in various packages: njm2068 Operational Amplifiers - Op Amps \| Mouser Edit: Sorry about the double post - I was composing while Moon Track was posting.

24th December 2012, 12:18 AM	#4
RS232 diyAudio Member Join Date: Jan 2006 Location: Swindon	Thank you guys, I had a closer look on the little critter and is in fact a 2068. Now my problem is were to get some on Christmas eve... Ric

24th December 2012, 12:33 AM	#5
agdr diyAudio Member Join Date: Sep 2010	That is the same op amp used in the gain stage of the O2 headphone amplifier, just the DIP8 version: EHP-O2 Award Winning Portable Headphone Amplifier \| Epiphany Acoustics Maybe you could tack solder an DIP-8 socket over the surface mount pads if someone nearby posts with a spare. The pinout is the same with the dip and smd versions.

24th December 2012, 01:11 AM	#7
agdr diyAudio Member Join Date: Sep 2010	sofaspud has a good point! The NE5532 would also substitute in a lot of situations. Same pinout: Farnell Export Buy Operational Amplifiers NE5532A dual 10MHz 9V/uS op amp, SOIC8 Texas Instruments NE5532AD online from RS for next day delivery.

24th December 2012, 08:01 AM	#8
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Pretty much any dual opamp should go in there and the thing should work - BUT, you should be thinking about what fried it.

25th December 2012, 10:54 AM	#10
RS232 diyAudio Member Join Date: Jan 2006 Location: Swindon	Thank you all guys What caused the failure was one of the guys from the band used one of the amplified outputs from the mixing table in to the line in socket. This monitor is a piece of junk, the amp inside is actually a chip amp (TDA7294). Well I got it working, I bypassed the amp and is now been used as a passive monitor till I get the parts from farnell. Thanks and Merry Christmas to all Ric