Thanks for the tip–and it looks like LCSC has CD4053s also.
Do we know if this supplier is legit? I don’t care about the cost in this situation, the whole thing is less than 20 bucks. I just want good parts so the modules perform well.
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Nice, thanks for the share. I just placed an order for these too.
I never order anything from Ali, so this is my first time.
I have never had an issue with JLC or LCSC. I have a lot of circuit boards assembled by JLC, by whom I also get my PCBs made, and all of their parts come from their LCSC warehouse.
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FYI, buying (the obsolete, leaded version of) LM6172 from Rochester via Digi-Key marketplace required no special credentials or questioning (…thanks to mrfang for the tip!). There was a minimum qty of 117.
Midcitysteve (who, it turns out, lives just a few blocks away from me) and I now each have a healthy supply of them!
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And they’ve finally updated the stock qty too.
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Yep, same experience. Took a little longer for Rochester to ship the items out to me than the rest of my Digikey order but $2.15/ea is a lot easier to swallow than some of the prices on Mouser these days.
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How did the XD1881s work out for you?
They’ve been fine. I have them in couple Cadets and a few of my prototypes without any issues.
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Great, I just ordered 10 of them. Thanks so much!
I’m on the verge of placing my first Mouser order to build some Castles and other units, but two parts on the Castle BOMs are out of stock and, in one case, showing as no longer available.
Does anyone have suggested substitutes for:
- Mouser 512-MC79L05ACP - ON Semiconductor Linear Voltage Regulators 5V 100mA Negative
- Mouser 512-512-1N4001GP - ON Semiconductor Rectifiers Vr/50V Io/1A T/R
Apologies if the answers are obvious, but I’m new to this stuff.
If anyone is feeling particularly helpful, I’m also looking for the Mouser equivalents of these parts from Tayda, for some @Fox modules:
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863-1N4001G
511-L79L05ABZ-AP
jumper:
151-8011-E
header:
571-9-146282-0
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Thanks, martijn.
You may use the single-row pin-header in place of the dual-row pin-header since you have to snip or break them to size anyhow.
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Based off the comment about capacitors in Syntonie’s VU006 module notes (that the C0G ones set the timing of the oscillator), I am guessing the same is the case for the C0G 0.1uF cap in the Castle Clock VCO — and thus shouldn’t be swapped out.
But I wonder if it is okay to swap the other specified 0.1uF caps (Vishay 1C10Z5U104M050B) for another one that I am planning to buy in bulk since I’ll be using it in a whole bunch of other modules (TDK FG18X7R1H104KNT06)?
That is a good observation. For frequency stability, the C0G type (class-1) will be far more stable over a range of operating temperatures vs. Z5U or even X7R types. Have a look at this graph, though note it is exaggerated in scale to make a point.
You’ll see that the K-magnitude for U2J and C0G is incredibly linear over their full operating temperatures. Above and below the left and right sides are outside of their operating temperatures where they no longer work so you can ignore these extremities.
Here is a description of K:
The factor by which the dielectric material, or insulator, increases the capacitance of the capacitor compared to air is known as the Dielectric Constant , ( k ). “k” is the ratio of the permittivity of the dielectric medium being used to the permittivity of free space otherwise known as a vacuum.
So as K changes, the capacitance values changes.
Yes. Unless specified, the stability for the rest of the caps is less important. I usually pick up X7R like the TDK’s you’ve found. They are plenty stable for general power-rail decoupling. Mouser keeps raising their prices week after week, so try not to spend any more than 7 cents on each cap.
These are slightly cheaper than the (TDK FG18X7R1H104KNT06), but both are good choices.
K104K15X7RF5TL2 Vishay / BC Components | Mouser
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Hey there cheers everyone first time post and in the midst of putting together a few cadet modules. My question is I ordered a number of cd4053’s and recieved cd74hc4053e‘s instead. Would this cut the mustard???
Afaik, the CD4053 used in the Cadets is always powered with +5V/-12V, which is fine since it can withstand 20V between V+ and V-, whereas CD74HC4053 max voltage between V+ and V- is 10.5V, so it cannot be used as the chip will be damaged because of the exceeding power supply voltage.
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@syntonie is correct. There are some speed differences too, so the circuit may not work exactly the same (may or may not create issues.)
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Thanks y’all! Here’s another genius question ha! I’m trying to pinch pennies, but I’m not gonna jump the shark and ruin this whole process but I was wondering with some of the resistor values could I do a two resistor in series combo to get a few of the values i currently do not have? Or will this itself create more capacitance/circuit noise or other funky gremlins . Poor in the pocket, determined in the spirit, and vaguely grasping always 
cheers!
You can bodge resistors in series but the values do need to be within 1% of the stated resistor value on the BOM or the circuit will not work as designed. Test them with a multimeter before installing.
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Cheers and tysm for such a swift reply!
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Hi everyone! Has anyone (as of late) building the LZX castle series modules found (working) suitable replacements for the now obsolete parts:
MC78L05ABPX
&
MC79L05ACP
I hate to say that I thought I found some and might have fried/bricked a couple so far…please send help!!