Diode datasheet reading





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What is difference between single and common cathode configuration? If I want to use 2804 for rectifying, will it act as 2800?



enter image description here



HSMS2800 https://datasheet.octopart.com/HSMS-2800-BLKG-Avago-datasheet-7087620.pdf






diodes rectifier







share|improve this question











$endgroup$



















    3












    $begingroup$


    What is difference between single and common cathode configuration? If I want to use 2804 for rectifying, will it act as 2800?



    enter image description here



    HSMS2800 https://datasheet.octopart.com/HSMS-2800-BLKG-Avago-datasheet-7087620.pdf






    diodes rectifier







    share|improve this question











    $endgroup$















      3












      3








      3





      $begingroup$


      What is difference between single and common cathode configuration? If I want to use 2804 for rectifying, will it act as 2800?



      enter image description here



      HSMS2800 https://datasheet.octopart.com/HSMS-2800-BLKG-Avago-datasheet-7087620.pdf






      diodes rectifier







      share|improve this question











      $endgroup$




      What is difference between single and common cathode configuration? If I want to use 2804 for rectifying, will it act as 2800?



      enter image description here



      HSMS2800 https://datasheet.octopart.com/HSMS-2800-BLKG-Avago-datasheet-7087620.pdf






      diodes rectifier




      diodes rectifier






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 16 hours ago







      Max Rock

















      asked 16 hours ago









      Max RockMax Rock

      497




      497






















          2 Answers
          2






          active

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          6












          $begingroup$

          A 2804 is two 2800's, with their cathodes connected together, put in the same package. You could just use one of them, or you could use both in parallel.






          share|improve this answer









          $endgroup$













          • $begingroup$
            That means, if I do not solder one of two terminal side of 2804 diode, it will act as 2800. Am I right?
            $endgroup$
            – Max Rock
            15 hours ago










          • $begingroup$
            These are not power diodes, only small signal, for low current<5mA use. Do you understand Max?
            $endgroup$
            – Sunnyskyguy EE75
            15 hours ago










          • $begingroup$
            @SunnyskyguyEE75 I am working on project related to rectenna. According to many researches I looked through, mostly used diodes were HSMS 28xx family. I am stuck on choosing right diodes. Most diodes of HSMS 28xx family are obsolete. That is why I am looking for trade-off. What I found HSMS 2804 was not out of stock.
            $endgroup$
            – Max Rock
            15 hours ago










          • $begingroup$
            @SunnyskyguyEE75 a bit different question, more broadly about my problem I posted here(electronics.stackexchange.com/questions/428821/…)
            $endgroup$
            – Max Rock
            15 hours ago












          • $begingroup$
            hmm that schematic does not reflect your readings. "circuit gave output 14.5V and 45uA on 200 Ohms load." does not make sense. 45uA on 200 Ohms is 9mV
            $endgroup$
            – Sunnyskyguy EE75
            14 hours ago



















          2












          $begingroup$

          As you can see in the table, every package has identical single diode specifications.



          But your question is "If I want to use 2804 for rectifying, will it act as 2800?"



          The temperature rise will be double sharing one package for two diodes.



          Answer: Yes for peak currents <=1mA
          No , if near Ip=10mA do not use if temp rise exceeds 70'C above worst case board temp.



          Although they have identical characteristics, now it means the dual diode package must share the same thermal resistance of;

          500°C/W for SOT-23 and 150°C/W for SOT-323



          You must work out the temp rise, but it means your DC load must be << 1mA since the diode peak current into a storage cap with 10% ripple will be 10mA






          share|improve this answer











          $endgroup$














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            2 Answers
            2






            active

            oldest

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            2 Answers
            2






            active

            oldest

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            active

            oldest

            votes






            active

            oldest

            votes









            6












            $begingroup$

            A 2804 is two 2800's, with their cathodes connected together, put in the same package. You could just use one of them, or you could use both in parallel.






            share|improve this answer









            $endgroup$













            • $begingroup$
              That means, if I do not solder one of two terminal side of 2804 diode, it will act as 2800. Am I right?
              $endgroup$
              – Max Rock
              15 hours ago










            • $begingroup$
              These are not power diodes, only small signal, for low current<5mA use. Do you understand Max?
              $endgroup$
              – Sunnyskyguy EE75
              15 hours ago










            • $begingroup$
              @SunnyskyguyEE75 I am working on project related to rectenna. According to many researches I looked through, mostly used diodes were HSMS 28xx family. I am stuck on choosing right diodes. Most diodes of HSMS 28xx family are obsolete. That is why I am looking for trade-off. What I found HSMS 2804 was not out of stock.
              $endgroup$
              – Max Rock
              15 hours ago










            • $begingroup$
              @SunnyskyguyEE75 a bit different question, more broadly about my problem I posted here(electronics.stackexchange.com/questions/428821/…)
              $endgroup$
              – Max Rock
              15 hours ago












            • $begingroup$
              hmm that schematic does not reflect your readings. "circuit gave output 14.5V and 45uA on 200 Ohms load." does not make sense. 45uA on 200 Ohms is 9mV
              $endgroup$
              – Sunnyskyguy EE75
              14 hours ago
















            6












            $begingroup$

            A 2804 is two 2800's, with their cathodes connected together, put in the same package. You could just use one of them, or you could use both in parallel.






            share|improve this answer









            $endgroup$













            • $begingroup$
              That means, if I do not solder one of two terminal side of 2804 diode, it will act as 2800. Am I right?
              $endgroup$
              – Max Rock
              15 hours ago










            • $begingroup$
              These are not power diodes, only small signal, for low current<5mA use. Do you understand Max?
              $endgroup$
              – Sunnyskyguy EE75
              15 hours ago










            • $begingroup$
              @SunnyskyguyEE75 I am working on project related to rectenna. According to many researches I looked through, mostly used diodes were HSMS 28xx family. I am stuck on choosing right diodes. Most diodes of HSMS 28xx family are obsolete. That is why I am looking for trade-off. What I found HSMS 2804 was not out of stock.
              $endgroup$
              – Max Rock
              15 hours ago










            • $begingroup$
              @SunnyskyguyEE75 a bit different question, more broadly about my problem I posted here(electronics.stackexchange.com/questions/428821/…)
              $endgroup$
              – Max Rock
              15 hours ago












            • $begingroup$
              hmm that schematic does not reflect your readings. "circuit gave output 14.5V and 45uA on 200 Ohms load." does not make sense. 45uA on 200 Ohms is 9mV
              $endgroup$
              – Sunnyskyguy EE75
              14 hours ago














            6












            6








            6





            $begingroup$

            A 2804 is two 2800's, with their cathodes connected together, put in the same package. You could just use one of them, or you could use both in parallel.






            share|improve this answer









            $endgroup$



            A 2804 is two 2800's, with their cathodes connected together, put in the same package. You could just use one of them, or you could use both in parallel.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 16 hours ago









            Neil_UKNeil_UK

            78.7k285182




            78.7k285182












            • $begingroup$
              That means, if I do not solder one of two terminal side of 2804 diode, it will act as 2800. Am I right?
              $endgroup$
              – Max Rock
              15 hours ago










            • $begingroup$
              These are not power diodes, only small signal, for low current<5mA use. Do you understand Max?
              $endgroup$
              – Sunnyskyguy EE75
              15 hours ago










            • $begingroup$
              @SunnyskyguyEE75 I am working on project related to rectenna. According to many researches I looked through, mostly used diodes were HSMS 28xx family. I am stuck on choosing right diodes. Most diodes of HSMS 28xx family are obsolete. That is why I am looking for trade-off. What I found HSMS 2804 was not out of stock.
              $endgroup$
              – Max Rock
              15 hours ago










            • $begingroup$
              @SunnyskyguyEE75 a bit different question, more broadly about my problem I posted here(electronics.stackexchange.com/questions/428821/…)
              $endgroup$
              – Max Rock
              15 hours ago












            • $begingroup$
              hmm that schematic does not reflect your readings. "circuit gave output 14.5V and 45uA on 200 Ohms load." does not make sense. 45uA on 200 Ohms is 9mV
              $endgroup$
              – Sunnyskyguy EE75
              14 hours ago


















            • $begingroup$
              That means, if I do not solder one of two terminal side of 2804 diode, it will act as 2800. Am I right?
              $endgroup$
              – Max Rock
              15 hours ago










            • $begingroup$
              These are not power diodes, only small signal, for low current<5mA use. Do you understand Max?
              $endgroup$
              – Sunnyskyguy EE75
              15 hours ago










            • $begingroup$
              @SunnyskyguyEE75 I am working on project related to rectenna. According to many researches I looked through, mostly used diodes were HSMS 28xx family. I am stuck on choosing right diodes. Most diodes of HSMS 28xx family are obsolete. That is why I am looking for trade-off. What I found HSMS 2804 was not out of stock.
              $endgroup$
              – Max Rock
              15 hours ago










            • $begingroup$
              @SunnyskyguyEE75 a bit different question, more broadly about my problem I posted here(electronics.stackexchange.com/questions/428821/…)
              $endgroup$
              – Max Rock
              15 hours ago












            • $begingroup$
              hmm that schematic does not reflect your readings. "circuit gave output 14.5V and 45uA on 200 Ohms load." does not make sense. 45uA on 200 Ohms is 9mV
              $endgroup$
              – Sunnyskyguy EE75
              14 hours ago
















            $begingroup$
            That means, if I do not solder one of two terminal side of 2804 diode, it will act as 2800. Am I right?
            $endgroup$
            – Max Rock
            15 hours ago




            $begingroup$
            That means, if I do not solder one of two terminal side of 2804 diode, it will act as 2800. Am I right?
            $endgroup$
            – Max Rock
            15 hours ago












            $begingroup$
            These are not power diodes, only small signal, for low current<5mA use. Do you understand Max?
            $endgroup$
            – Sunnyskyguy EE75
            15 hours ago




            $begingroup$
            These are not power diodes, only small signal, for low current<5mA use. Do you understand Max?
            $endgroup$
            – Sunnyskyguy EE75
            15 hours ago












            $begingroup$
            @SunnyskyguyEE75 I am working on project related to rectenna. According to many researches I looked through, mostly used diodes were HSMS 28xx family. I am stuck on choosing right diodes. Most diodes of HSMS 28xx family are obsolete. That is why I am looking for trade-off. What I found HSMS 2804 was not out of stock.
            $endgroup$
            – Max Rock
            15 hours ago




            $begingroup$
            @SunnyskyguyEE75 I am working on project related to rectenna. According to many researches I looked through, mostly used diodes were HSMS 28xx family. I am stuck on choosing right diodes. Most diodes of HSMS 28xx family are obsolete. That is why I am looking for trade-off. What I found HSMS 2804 was not out of stock.
            $endgroup$
            – Max Rock
            15 hours ago












            $begingroup$
            @SunnyskyguyEE75 a bit different question, more broadly about my problem I posted here(electronics.stackexchange.com/questions/428821/…)
            $endgroup$
            – Max Rock
            15 hours ago






            $begingroup$
            @SunnyskyguyEE75 a bit different question, more broadly about my problem I posted here(electronics.stackexchange.com/questions/428821/…)
            $endgroup$
            – Max Rock
            15 hours ago














            $begingroup$
            hmm that schematic does not reflect your readings. "circuit gave output 14.5V and 45uA on 200 Ohms load." does not make sense. 45uA on 200 Ohms is 9mV
            $endgroup$
            – Sunnyskyguy EE75
            14 hours ago




            $begingroup$
            hmm that schematic does not reflect your readings. "circuit gave output 14.5V and 45uA on 200 Ohms load." does not make sense. 45uA on 200 Ohms is 9mV
            $endgroup$
            – Sunnyskyguy EE75
            14 hours ago













            2












            $begingroup$

            As you can see in the table, every package has identical single diode specifications.



            But your question is "If I want to use 2804 for rectifying, will it act as 2800?"



            The temperature rise will be double sharing one package for two diodes.



            Answer: Yes for peak currents <=1mA
            No , if near Ip=10mA do not use if temp rise exceeds 70'C above worst case board temp.



            Although they have identical characteristics, now it means the dual diode package must share the same thermal resistance of;

            500°C/W for SOT-23 and 150°C/W for SOT-323



            You must work out the temp rise, but it means your DC load must be << 1mA since the diode peak current into a storage cap with 10% ripple will be 10mA






            share|improve this answer











            $endgroup$


















              2












              $begingroup$

              As you can see in the table, every package has identical single diode specifications.



              But your question is "If I want to use 2804 for rectifying, will it act as 2800?"



              The temperature rise will be double sharing one package for two diodes.



              Answer: Yes for peak currents <=1mA
              No , if near Ip=10mA do not use if temp rise exceeds 70'C above worst case board temp.



              Although they have identical characteristics, now it means the dual diode package must share the same thermal resistance of;

              500°C/W for SOT-23 and 150°C/W for SOT-323



              You must work out the temp rise, but it means your DC load must be << 1mA since the diode peak current into a storage cap with 10% ripple will be 10mA






              share|improve this answer











              $endgroup$
















                2












                2








                2





                $begingroup$

                As you can see in the table, every package has identical single diode specifications.



                But your question is "If I want to use 2804 for rectifying, will it act as 2800?"



                The temperature rise will be double sharing one package for two diodes.



                Answer: Yes for peak currents <=1mA
                No , if near Ip=10mA do not use if temp rise exceeds 70'C above worst case board temp.



                Although they have identical characteristics, now it means the dual diode package must share the same thermal resistance of;

                500°C/W for SOT-23 and 150°C/W for SOT-323



                You must work out the temp rise, but it means your DC load must be << 1mA since the diode peak current into a storage cap with 10% ripple will be 10mA






                share|improve this answer











                $endgroup$



                As you can see in the table, every package has identical single diode specifications.



                But your question is "If I want to use 2804 for rectifying, will it act as 2800?"



                The temperature rise will be double sharing one package for two diodes.



                Answer: Yes for peak currents <=1mA
                No , if near Ip=10mA do not use if temp rise exceeds 70'C above worst case board temp.



                Although they have identical characteristics, now it means the dual diode package must share the same thermal resistance of;

                500°C/W for SOT-23 and 150°C/W for SOT-323



                You must work out the temp rise, but it means your DC load must be << 1mA since the diode peak current into a storage cap with 10% ripple will be 10mA







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited 15 hours ago

























                answered 15 hours ago









                Sunnyskyguy EE75Sunnyskyguy EE75

                70.4k226102




                70.4k226102






























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