Timothy Weber wrote:
> Brian B. Riley wrote:
>   
>> I have found DigiKey to carry the DS18B20 with reliable stock. They  
>> offer the same price per unit on qty=50 that DalSemi wants for  
>> qty=100. I just looked and  DigiKey has 5900+ on hand ...
>>     
>
> At one particular time I was looking, maybe a year ago, Digi-Key was out 
> of stock and had longer lead times than Maxim.  But they do seem to keep 
> them in stock in general.
>
> Also, I've been using the DS18B20-PAR, the "parasite power only" 
> version, which I think is harder to get elsewhere (not in stock at 
> Digi-Key now), and I think it was a bit cheaper than the other 
> varieties.  My records say $1.76 last time I ordered 1000 of them.
>   
Does the "parasite power" scheme work reliably? Seems like the pulses 
traverse too long
a time for an internal cap to work....

--Bob
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