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Mini3 Diode choice question

post #1 of 4
10/31/10 at 3:08am
Thread Starter 

Hi guys,

 

I tried looking around but I couldn't get a straight answer.

 

Anyways here goes.

 

The amb website says:

 

standard diod Diodes

    * D1, D2, D3: 1A rectifier diode
      Lead spacing 0.300" (7.5mm)
      1N4001 to 1N4007 series (DO-41) (Mouser, Digi-Key, Newark, Farnell)

    * D4: 12V 500mW zener diode
      Lead spacing 0.300" (7.5mm)
      BZX55C12 or 1N5242B (DO-35) (AMB audio shop, Mouser, Digi-Key, Newark, Farnell)

    * LED1, LED2: T-1 (3mm)
      Lead spacing 0.100" (2.5mm)
      Your choice of size and color (affects value of R6 and R7)


Notes about D2 and D3:

You may use STPS1L30U schottky diodes (surface mount, SMB/DO-214AA) in these locations. The circuit board has pads to accommodate this option. These schottky diodes have lower forward voltage drop than standard diodes.

 

The kit I bought from glass jar audio includes D2 and D3 with teh regular recitifer diode and the schottky diodes...

 

So I'm assuming the schottky diodes are better.  What exactly is the difference besides the lower forward voltage drop?  Are there any advantages and disadvantages to either?

 

TY,

Ronald

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post #2 of 4
10/31/10 at 6:58am

Since they are reverse current protection diodes I doubt you'll be able to hear any difference between generic 1n400x diodes and Schottky diodes. I don't have the urge to change anything in my Hi-Perf Mini3.

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post #3 of 4
10/31/10 at 1:19pm

The schottky diodes have a forward drop of ~0.3V compared to 1N400x's ~0.9V.  This gives you about 1dB more maximum output voltage swing, and a few minutes more run time on a battery charge.  The difference is small, it's up to you whether SMD soldering is worth the effort,

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post #4 of 4
10/31/10 at 5:22pm
Thread Starter 

ty smily_headphones1.gif... soldeering them on wasnt that hard smily_headphones1.gif.  mini3 sounds great biggrin.gif

 

 

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