Depleted Teccor Triacs: 3110, 2010 6V, 3150 7V

[AdinPanthers]

Hi. I have the following triacs that are made by Teccor and I’m trying to seek for replacement. I have boards that have the “3110” triac to be in a TO-220 package (albeit I have yet to have one fail), but I’m asking here just in case if one of them fails. A “3150” marked with “7V” on the metal tab in package TO-202 and 3 “2010” marked with “6V” on the metal tab in package TO-202. Is there any replacements for those available elsewhere? Thanks.

[jeff_12063]

Hello AdinPanthers,

Thank you for posting in the TechForum.

I did some looking, but I couldn’t find anything that would easily be a drop in. Maybe one of our other people will be able to help more.

[APDahlen]

Hello @AdinPanthers,

Here is what I can tell you:

• The symbol is Teccor which is now part of Littlefuse.

• The parts appear are likely obsolete as seen in this list.

Hopefully your or another reader will be able to use this clue to locate the substitutions.

Have a good weekend,

Aaron

[AdinPanthers]

I just tested those triacs using diode on the multimeter just to get its reading. Numbers are rounded up.

2010: .53
3110: .06
3150: .38

[AdinPanthers]

Update as of 11/11/2025

I took a look at the other board I have laying around similar to the first one with the BUX84F transistor and 3110 triac. Except it has an MJF47 transistor and a 3110C triac

The board with the MJF47 transistor and 3110C triac has a 3150 triac and 3 2010 triacs

The board with the BUX84F transistor and 3110 triac has a Z0409DE triac in place of 3150 triac and 3 Motorola 2N6073A triacs in place of 3 2010 triacs

Example photo of what the Motorola 2N6073A looks like

Now I know that Z0409DE replaces Teccor 3150 triac and Motorola 2N6073A replaces Teccor 2010 triac. Is there any alternatives for Z0409DE triac and Motorola 2N6073A triacs? Thanks.

[APDahlen]

Hello @AdinPanthers,

The 2N6073A is in DigiKey’s system as:

2N6073A | DigiKey Electronics

I also see a Z409MH. The HM appears to have a higher voltage rating. Double check the pinout.

Z0409MH | DigiKey Electronics

Sincerely,

Aaron

[AdinPanthers]

I found specs on the Littelfuse 2N6073AG similar to the Onsemi 2N6073A.

2N6073AG | DigiKey Electronics

[APDahlen]

Thank you, @AdinPanthers

[AdinPanthers]

@AdinPanthers

Z0409DE

Of course. Now I need a replacement for Z0409DE.

[Kristof_2649]

I’m also coming back with Z0409MH as a potential option for this.