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Author Topic:   Diode
NewportMe posted 03-22-2010 02:01 PM ET (US)   Profile for NewportMe   Send Email to NewportMe  
There is a diode in the kill circuit of my motor (E225cxcce).
This diode has failed. I am wondering if anyone here could tell me from the markings what a suitable replacement would be. The diode has DII J10 printed on it.

I have ordered a new switch and the harness that contains the diode. I just thought that if I can find a replacement diode I would repair the old harness for a spare.

Bruce

Phil T posted 03-22-2010 08:28 PM ET (US)     Profile for Phil T  Send Email to Phil T     
Bruce-

You might give Radio Shack a try.

jimh posted 03-22-2010 10:08 PM ET (US)     Profile for jimh  Send Email to jimh     
The diode is likely just in the circuit as a steering diode.

In a kill circuit the voltages can be quite high, on the order of several hundred volts. The diode should be capable of tolerating reverse-bias with those voltages. A diode with a peak inverse voltage (PIV) of 1,000-volts should be reasonable.

The current is unknown to me. I would look for a diode with a rating of at least 3-amperes.

NewportMe posted 03-23-2010 05:49 AM ET (US)     Profile for NewportMe  Send Email to NewportMe     
Thanks for the replies
seahorse posted 03-23-2010 06:35 AM ET (US)     Profile for seahorse  Send Email to seahorse     

The wiring harness diode is a replaceable part, see your dealer or check the online parts list at the Evinrude website.

seahorse posted 03-23-2010 07:05 AM ET (US)     Profile for seahorse  Send Email to seahorse     

The diode is not listed in the late model parts books, but it is in earlier books under part no. 583898

davej14 posted 03-23-2010 02:24 PM ET (US)     Profile for davej14  Send Email to davej14     
You would be pretty safe if you sized the current rating as the current carrying capacity of the wire it is attached to. I suspect that this would be overkill if it is in a power circuit and way overkill if it is in a signal circuit.

Diodes are pretty cheap so be conservative.

NewportMe posted 03-24-2010 07:50 AM ET (US)     Profile for NewportMe  Send Email to NewportMe     
Thanks again guys

The part seahorse has mentioned seems to be part of a different wire harness unless the parts diagrams that I am using are incorrect. I will continue researching this and replace the diode for a spare. The depth of knowledge and willingness to help people out here on this site astounds me.

Thanks
Bruce

seahorse posted 03-24-2010 04:49 PM ET (US)     Profile for seahorse  Send Email to seahorse     
that diode is used in the engine wiring harness on some motors to isolate the warning systems, plus it is also used in the safety circuit on older twin engine rigs that use the single kill-switch panel.
davej14 posted 03-25-2010 08:41 AM ET (US)     Profile for davej14  Send Email to davej14     
Does the diode look like this?

http://www.diodes.com/datasheets/ds28002.pdf

These are 1A generic industry parts.

The body size of the part relates to current carrying ability. For example, the part above is a 1A part while the following is a 3A part:

http://www.diodes.com/datasheets/ds28007.pdf

NewportMe posted 03-25-2010 09:14 AM ET (US)     Profile for NewportMe  Send Email to NewportMe     
Dave the diode looks like the ones pictured. I was curious if the markings on the one in my boat could be read to give the electrical spec for the part so a suitable replacement could be found.

Thanks again

davej14 posted 03-25-2010 09:53 AM ET (US)     Profile for davej14  Send Email to davej14     
The markings should reveal the product type unless they were purchased to a custom specification. For a low cost component like this that would be unlikely. There should be a JEDEC type number on the part like "1N4000".

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