How to figure which LED do i need?












3















I need to replace two LED diodes on TP4056 board. (bottom right corner on the picture)
enter image description here
The board is going to be in a box and I want to move diodes to the small holes in the box



There are two resistors with marks 102, that is 1kOhm. I measured voltage on diodes and my multi-meter said 2.7V.



I want to use something like this:
enter image description here



Those diodes are 3V 20mAh. Can they replace exiting diodes?






led resistors diodes







share|improve this question









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  • Welcome to EE.SE. For this question to be any use to future readers it is important that you include the images inline in your question so that it still makes sense when the eBay links die. Not many of us will follow links just to understand what you are asking about. There should be enough information in the question to answer it. The current rating of diodes will be in mA, not mAh which is used as a measure of energy capacity in a battery. There is an edit link below your question ...

    – Transistor
    4 hours ago


















3















I need to replace two LED diodes on TP4056 board. (bottom right corner on the picture)
enter image description here
The board is going to be in a box and I want to move diodes to the small holes in the box



There are two resistors with marks 102, that is 1kOhm. I measured voltage on diodes and my multi-meter said 2.7V.



I want to use something like this:
enter image description here



Those diodes are 3V 20mAh. Can they replace exiting diodes?






led resistors diodes







share|improve this question









New contributor




mt82 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





















  • Welcome to EE.SE. For this question to be any use to future readers it is important that you include the images inline in your question so that it still makes sense when the eBay links die. Not many of us will follow links just to understand what you are asking about. There should be enough information in the question to answer it. The current rating of diodes will be in mA, not mAh which is used as a measure of energy capacity in a battery. There is an edit link below your question ...

    – Transistor
    4 hours ago
















3












3








3








I need to replace two LED diodes on TP4056 board. (bottom right corner on the picture)
enter image description here
The board is going to be in a box and I want to move diodes to the small holes in the box



There are two resistors with marks 102, that is 1kOhm. I measured voltage on diodes and my multi-meter said 2.7V.



I want to use something like this:
enter image description here



Those diodes are 3V 20mAh. Can they replace exiting diodes?






led resistors diodes







share|improve this question









New contributor




mt82 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












I need to replace two LED diodes on TP4056 board. (bottom right corner on the picture)
enter image description here
The board is going to be in a box and I want to move diodes to the small holes in the box



There are two resistors with marks 102, that is 1kOhm. I measured voltage on diodes and my multi-meter said 2.7V.



I want to use something like this:
enter image description here



Those diodes are 3V 20mAh. Can they replace exiting diodes?






led resistors diodes




led resistors diodes






share|improve this question









New contributor




mt82 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




mt82 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 4 hours ago







mt82













New contributor




mt82 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 4 hours ago









mt82mt82

163




163




New contributor




mt82 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





mt82 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






mt82 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.













  • Welcome to EE.SE. For this question to be any use to future readers it is important that you include the images inline in your question so that it still makes sense when the eBay links die. Not many of us will follow links just to understand what you are asking about. There should be enough information in the question to answer it. The current rating of diodes will be in mA, not mAh which is used as a measure of energy capacity in a battery. There is an edit link below your question ...

    – Transistor
    4 hours ago





















  • Welcome to EE.SE. For this question to be any use to future readers it is important that you include the images inline in your question so that it still makes sense when the eBay links die. Not many of us will follow links just to understand what you are asking about. There should be enough information in the question to answer it. The current rating of diodes will be in mA, not mAh which is used as a measure of energy capacity in a battery. There is an edit link below your question ...

    – Transistor
    4 hours ago



















Welcome to EE.SE. For this question to be any use to future readers it is important that you include the images inline in your question so that it still makes sense when the eBay links die. Not many of us will follow links just to understand what you are asking about. There should be enough information in the question to answer it. The current rating of diodes will be in mA, not mAh which is used as a measure of energy capacity in a battery. There is an edit link below your question ...

– Transistor
4 hours ago







Welcome to EE.SE. For this question to be any use to future readers it is important that you include the images inline in your question so that it still makes sense when the eBay links die. Not many of us will follow links just to understand what you are asking about. There should be enough information in the question to answer it. The current rating of diodes will be in mA, not mAh which is used as a measure of energy capacity in a battery. There is an edit link below your question ...

– Transistor
4 hours ago












3 Answers
3






active

oldest

votes


















5














enter image description here



Figure 1. Typical IV curves for various colours of LEDs. Image source: LEDnique.



Replacement of any of those small indicator LEDs with 3 or 5 mm LEDs should be fine.



A little bit of background theory may help. LEDs have a non-linear relationship between applied voltage and current. The forward voltage also depends on the colour as shown in Figure 1.



Your measured 3 V LED voltage suggests that you've got either white or blue LEDs on the board. With the 1 kΩ resistor in series the current will be limited to a safe value even if you change to one with a lower forward voltage.






share|improve this answer































    4














    Based on the schematic in the datasheet, they're not critical, any LED will do.
    enter image description here






    share|improve this answer































      2














      Yes, you can most likely replace the SMD LEDs by any "jellybean" LED. You can easily try it. Do observe the correct LED polarity.






      share|improve this answer


























      • Even getting the polarity wrong is unlikely to hurt anything, it'll just result in the LED not lighting, while the rest of the circuit works normally. And the LED won't be harmed either, so once installed with the correct polarity, it'll be just fine.

        – Ben Voigt
        50 mins ago











      Your Answer





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      3 Answers
      3






      active

      oldest

      votes








      3 Answers
      3






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      5














      enter image description here



      Figure 1. Typical IV curves for various colours of LEDs. Image source: LEDnique.



      Replacement of any of those small indicator LEDs with 3 or 5 mm LEDs should be fine.



      A little bit of background theory may help. LEDs have a non-linear relationship between applied voltage and current. The forward voltage also depends on the colour as shown in Figure 1.



      Your measured 3 V LED voltage suggests that you've got either white or blue LEDs on the board. With the 1 kΩ resistor in series the current will be limited to a safe value even if you change to one with a lower forward voltage.






      share|improve this answer




























        5














        enter image description here



        Figure 1. Typical IV curves for various colours of LEDs. Image source: LEDnique.



        Replacement of any of those small indicator LEDs with 3 or 5 mm LEDs should be fine.



        A little bit of background theory may help. LEDs have a non-linear relationship between applied voltage and current. The forward voltage also depends on the colour as shown in Figure 1.



        Your measured 3 V LED voltage suggests that you've got either white or blue LEDs on the board. With the 1 kΩ resistor in series the current will be limited to a safe value even if you change to one with a lower forward voltage.






        share|improve this answer


























          5












          5








          5







          enter image description here



          Figure 1. Typical IV curves for various colours of LEDs. Image source: LEDnique.



          Replacement of any of those small indicator LEDs with 3 or 5 mm LEDs should be fine.



          A little bit of background theory may help. LEDs have a non-linear relationship between applied voltage and current. The forward voltage also depends on the colour as shown in Figure 1.



          Your measured 3 V LED voltage suggests that you've got either white or blue LEDs on the board. With the 1 kΩ resistor in series the current will be limited to a safe value even if you change to one with a lower forward voltage.






          share|improve this answer













          enter image description here



          Figure 1. Typical IV curves for various colours of LEDs. Image source: LEDnique.



          Replacement of any of those small indicator LEDs with 3 or 5 mm LEDs should be fine.



          A little bit of background theory may help. LEDs have a non-linear relationship between applied voltage and current. The forward voltage also depends on the colour as shown in Figure 1.



          Your measured 3 V LED voltage suggests that you've got either white or blue LEDs on the board. With the 1 kΩ resistor in series the current will be limited to a safe value even if you change to one with a lower forward voltage.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 4 hours ago









          TransistorTransistor

          81.2k778175




          81.2k778175

























              4














              Based on the schematic in the datasheet, they're not critical, any LED will do.
              enter image description here






              share|improve this answer




























                4














                Based on the schematic in the datasheet, they're not critical, any LED will do.
                enter image description here






                share|improve this answer


























                  4












                  4








                  4







                  Based on the schematic in the datasheet, they're not critical, any LED will do.
                  enter image description here






                  share|improve this answer













                  Based on the schematic in the datasheet, they're not critical, any LED will do.
                  enter image description here







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 4 hours ago









                  Phil GPhil G

                  2,214412




                  2,214412























                      2














                      Yes, you can most likely replace the SMD LEDs by any "jellybean" LED. You can easily try it. Do observe the correct LED polarity.






                      share|improve this answer


























                      • Even getting the polarity wrong is unlikely to hurt anything, it'll just result in the LED not lighting, while the rest of the circuit works normally. And the LED won't be harmed either, so once installed with the correct polarity, it'll be just fine.

                        – Ben Voigt
                        50 mins ago
















                      2














                      Yes, you can most likely replace the SMD LEDs by any "jellybean" LED. You can easily try it. Do observe the correct LED polarity.






                      share|improve this answer


























                      • Even getting the polarity wrong is unlikely to hurt anything, it'll just result in the LED not lighting, while the rest of the circuit works normally. And the LED won't be harmed either, so once installed with the correct polarity, it'll be just fine.

                        – Ben Voigt
                        50 mins ago














                      2












                      2








                      2







                      Yes, you can most likely replace the SMD LEDs by any "jellybean" LED. You can easily try it. Do observe the correct LED polarity.






                      share|improve this answer















                      Yes, you can most likely replace the SMD LEDs by any "jellybean" LED. You can easily try it. Do observe the correct LED polarity.







                      share|improve this answer














                      share|improve this answer



                      share|improve this answer








                      edited 1 hour ago









                      SamGibson

                      10.9k41537




                      10.9k41537










                      answered 4 hours ago









                      Wouter van OoijenWouter van Ooijen

                      44.3k150118




                      44.3k150118













                      • Even getting the polarity wrong is unlikely to hurt anything, it'll just result in the LED not lighting, while the rest of the circuit works normally. And the LED won't be harmed either, so once installed with the correct polarity, it'll be just fine.

                        – Ben Voigt
                        50 mins ago



















                      • Even getting the polarity wrong is unlikely to hurt anything, it'll just result in the LED not lighting, while the rest of the circuit works normally. And the LED won't be harmed either, so once installed with the correct polarity, it'll be just fine.

                        – Ben Voigt
                        50 mins ago

















                      Even getting the polarity wrong is unlikely to hurt anything, it'll just result in the LED not lighting, while the rest of the circuit works normally. And the LED won't be harmed either, so once installed with the correct polarity, it'll be just fine.

                      – Ben Voigt
                      50 mins ago





                      Even getting the polarity wrong is unlikely to hurt anything, it'll just result in the LED not lighting, while the rest of the circuit works normally. And the LED won't be harmed either, so once installed with the correct polarity, it'll be just fine.

                      – Ben Voigt
                      50 mins ago










                      mt82 is a new contributor. Be nice, and check out our Code of Conduct.










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