[sdiy] MIDI optocoupler query

John Speth john.speth at andrews-cooper.com
Fri Jan 5 21:22:34 CET 2018


I remember reading a long time ago that opto couplers are that big because the innards actually require that much volume.  I could be wrong though.

JJS

From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Tim Ressel

Yeah, that "SMT" package is just a DIP with the legs modded for reflowing. I was hoping for a part that is smaller than a dip.

--tr

On 1/5/2018 11:53 AM, Pete Hartman wrote:
Olivier of Mutable Instruments says he has better success with a 6N137 than a 6N138.

Turns out the '137 has an SMT version

https://www.mouser.com/productdetail/lite-on/6n137s?qs=sGAEpiMZZMtd3yBnp8bAgJVeHfvx%252b1RWwJnXPJ0hWKA%3D

And that was just one of several options.

Pete



On Fri, Jan 5, 2018 at 1:37 PM, Tim Ressel <timr at circuitabbey.com<mailto:timr at circuitabbey.com>> wrote:
Thanks but this is a production design and can't use obsolete parts.

--tr



On 1/5/2018 11:35 AM, Jean-Pierre Desrochers wrote:
Best is Sharp PC900 SMT:
Obsolete but still available through eBay
https://www.ebay.com/itm/20-PIECE-LOT-PC900V0YSZX-SHARP-OPTOISO-5KV-OPEN-COL
LECTOR-6DIP-/302575333531?roken=cUgayN&soutkn=9QY7wa

JP

-----Message d'origine-----
De : Synth-diy [mailto:synth-diy-bounces at synth-diy.org<mailto:synth-diy-bounces at synth-diy.org>] De la part de Tim
Ressel
Envoyé : 5 janvier 2018 13:55
À : SYNTH DIY
Objet : [sdiy] MIDI optocoupler query

Hi,

Is there a small SMT opto that is known to work as a MIDI receiver? The
6N138 is on the portly side and I am out of room on my board.

Thanks!

--
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com<mailto:timr at circuitabbey.com>

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--

--Tim Ressel

Circuit Abbey

timr at circuitabbey.com<mailto:timr at circuitabbey.com>
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