Part substitution question

[Yxsa]

Hi,

Due to lack of available parts, would it be possible to replace (part numbers in bold, differences in italics):

Ceramic Resonator 8MHz ??0.5% (Tol) ??0.2% (Stability) 33pF 40Ohm 3-Pin CSMD T/R
with
ECS-CTE-8.00-33-TR Resonatoren 8MHz Ceramic Resonator Built in Capacitor 33pF 30 Ohms -40 C 85 C Surface Mount 3.2 x 1.3 x 1.0 mm

and

SN65HVD234DR
with
SN65HVD234DRG4, TI mentiones one is the 'same as' the other one. I was looking at this listing: https://www.ebay.com/itm/5PCS-SN65HVD234DR-IC-CAN-TRANSCEIVER-3-3V-8-SOIC-HVD234-65HVD234/292430007607 . Would those be appropriate?

[Seth]

Those sound like good replacements, thanks. Please let us know if they work or don’t. 

On Mon, Mar 22, 2021 at 09:02 Yxsa [via BlueSaab Forum] <[hidden email]> wrote:

Hi,

Due to lack of available parts, would it be possible to replace (part numbers in bold, differences in italics):

Ceramic Resonator 8MHz ??0.5% (Tol) ??0.2% (Stability) 33pF 40Ohm 3-Pin CSMD T/R
with
ECS-CTE-8.00-33-TR Resonatoren 8MHz Ceramic Resonator Built in Capacitor 33pF 30 Ohms -40 C 85 C Surface Mount 3.2 x 1.3 x 1.0 mm

and

SN65HVD234DR
with
SN65HVD234DRG4, TI mentiones one is the 'same as' the other one. I was looking at this listing: https://www.ebay.com/itm/5PCS-SN65HVD234DR-IC-CAN-TRANSCEIVER-3-3V-8-SOIC-HVD234-65HVD234/292430007607 . Would those be appropriate?

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[Yxsa]

Amazing speed, Seth  

Thanks, I'll give those a try.

[Yxsa]

By the way, do you see any differences between
https://nl.mouser.com/ProductDetail/Microchip-Technology/RN52-I-RM
and
https://nl.mouser.com/ProductDetail/Microchip-Technology/RN52-I-RM116 ?

I compared the data sheets but they seem close to identical. Not completely sure though. The second one is €2 cheaper.

[Seth]

I think the 116 is “newer” because it’s listing the firmware version in the pn “, which is preloaded. Having said that, if you buy the “old” one, you can upgrade the firmware to 1.16, which I think BlueSaab needs or else some functions may not work. 

On Mon, Mar 22, 2021 at 09:18 Yxsa [via BlueSaab Forum] <[hidden email]> wrote:

By the way, do you see any differences between
https://nl.mouser.com/ProductDetail/Microchip-Technology/RN52-I-RM
and
https://nl.mouser.com/ProductDetail/Microchip-Technology/RN52-I-RM116 ?

I compared the data sheets but they seem close to identical. Not completely sure though. The second one is €2 cheaper.

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[speedofloic]

Hi Yxsa,

Have you recently ordered all the parts somewhere in Europe? I can't seem to find any websites where the full BOM is in stock. Probably due to the chip shortage.

[homerisback]

Hi,
I recently had to dig into equivalents to have a full BOM available @ Mouser. I'm inside EU as well.
Unfortunately, parts like RN52 haven't a suitable equivalent...

[speedofloic]

What substitute part did you use for the MCU 32-bit STM32F1 ARM?

[homerisback]

Actually, I don't built v6 BlueSaab, but v5.x with Atmega328 chip.

[speedofloic]

I managed to buy a RN52-I/RM116-ND from Digi-Key

[speedofloic]

How's this substitution? Many differences I guess the main one being the frequency

[4pplet]

The ATSAM3S is not a good substitution, I assume it would require rework of code and PCB.

The GD32F103 is a drop in replacement for the STM32F103, it can be had at lcsc.com. The genuine stm32f103rb and stm32f103re (higher in memory) is actually avaliable through lcsc, but they are very expensive these days. :)

The SN65HVD234DR is also available on lcsc btw, if someone still have issues finding it.

[speedofloic]

So the speed difference between the GD32 and the STM32 doesn't make a difference?

[4pplet]

I believe it should be fine, I can hopefully test it in a couple of weeks. Code changes might be needed, but it should be minor. It's safer to stick with the genuine part until tested.

[not_me_really]

Just a quick word to say that the GD32F103RBT6 is a drop in replacement for the STM32F103RBT7, and so far, has required no code changes!


Frank.

[byczy]

Hi,
I would like to ask about the substitution of the BT module. Anyone to know if it is possible to change the BT module for the newest version of BT?

Second thing is that THS4522IPWR is mostly out of stock :(

Many thanks,
byczy

[Seth]

You can check OctoPart.com for part availability:
https://octopart.com/search?q=THS4552IPWR¤cy=USD&specs=0

Not sure what you mean by "newest version of BT"; the latest RN52-I/RM116 is available at digikey.

[byczy]

Seth, many thanks for the links. With BT. I was thinking about a module that supports the newest version of BT standard.

[byczy]

Any idea for the substitution of 1SC3528VGB01MH08 SMD LED?

[Seth]

digikey has nearly 50,000 pcs in stock...

https://www.digikey.com/en/products/detail/w%C3%BCrth-elektronik/150141M173100/4489960