[Amps] 1N Diodes

[Boye Christensen]

Hi  To All

There is 3 reasons for a shorted 1N4001
To high reverse voltage
To high Current
To high temperature then degraded lifetime
And all 3 will be better with 1N5408

Alek has has a good point here, upgrade to a 3 Amp diode 1N5408

73 Boye OZ7C

On 01-07-2021 02:08, Alek Petkovic wrote:
> NO!. Leave the higher voltage rated diode/s in there. Don't go 
> backwards and risk it failng again.
>
> As Lou said, be safe and stick 1N5408s in there. They do NOT affect 
> any thing else in the amp. They just have a much higher rating and 
> safety factor.
>
> 73, Alek, VK6APK
>
> On 30/06/2021 11:31 pm, Mark - N5OT wrote:
>> Thanks everyone,
>>
>> I think I will leave the 1N4003 in there for the time being, but when 
>> I find a 1N4001 I'll set it aside for the next time I open the box.
>>
>> 73 - Mark N5OT
>>
>>
>> On 6/30/2021 9:26 AM, Dan Michnay wrote:
>>>
>>> I ran into trouble replacing a 4002 with a 4007 some years ago. It 
>>> was in a switching power supply. The reverse recovery time increases 
>>> significantly as you go from the 4001 to the 4007. I don't know if 
>>> that is significant in your application but it is true
>>>
>>> Dan K9EA
>>>
>>> On 6/30/2021 9:50 AM, Mark - N5OT wrote:
>>>> So I put it in and the meters work like they're supposed to.  Just 
>>>> worried if it affects the overload circuit. However, the amp is 
>>>> running very acceptably.  25ma of Grid current at 1500 watts out.
>>>>
>>>> On 6/30/2021 7:34 AM, Mark - N5OT wrote:
>>>>> Ameritron AL800H - two 3CX800s
>>>>>
>>>>> Meters have always behaved badly.  Manual says when this happens, 
>>>>> then D117 may be shorted.  I have the amp opened, and this diode 
>>>>> tests shorted.
>>>>>
>>>>> Manual says this diode "protects the overload circuit and the 
>>>>> meters."
>>>>>
>>>>> It's a 1N4001.  I can't find any around here.  I have about 
>>>>> 1x10E18 1N4003 diodes.  Can I use a 1N4003?
>>>>>
>>>>> Thanks in advance.
>>>>>
>>>>> 73 - Mark N5OT
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