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tda1387 dac pcb "front end"
tda1387 dac pcb "front end"
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Old 12th January 2019, 10:55 AM   #451
abraxalito is offline abraxalito  United Kingdom
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The 'base' (actually gate) voltage of 2.5V for J327 will work just as well for J56. A quick look at the DS shows the maximum Vth for both is -1V @1mA. Good luck with the soldering if you take the leap for J56 - remember to order the MFV package - the other one is even more of a nightmare to solder.
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Old 31st January 2019, 04:48 PM   #452
pcgab is offline pcgab  United States
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tda1387 dac pcb "front end"
Looks like Mouser has the 327's back in stock:

SSM3J327R,LF Toshiba | Mouser
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Old 31st January 2019, 06:46 PM   #453
twocents is offline twocents  South Africa
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tda1387 dac pcb "front end"
Quote:
Originally Posted by pcgab View Post
Looks like Mouser has the 327's back in stock:
Fantastic news. Thank you for the heads-up pcgab! Ironically I received most of my components today from Mouser via a local agent, including the replacement J56's.
they are super tiny. I can probably TRY to solder them using a friend's microscope but the main problem is the solder pads on the pcb are too spaced out for those tiny legs. I think I will rather order the J327's and wait a little longer.
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Old 1st February 2019, 12:51 AM   #454
abraxalito is offline abraxalito  United Kingdom
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What I do with the J56s is solder one (or perhaps two) legs onto the pads. Then bridge the second (and/or third) pin with a 0ohm 0603 resistor to the PCB. Depending on layout the resistor could be to the gate terminal in which case can be the gate stopper R (I use 330R to 470R).
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