Can a Triac BTA08-600B replace a BTB04-600SL?

[blackhead]

I have a BTB04-600SL with the anodes giving a reading of 0 Ohms aross
them in both directions so it looks as if it's duff and decided to
replace it with BTA08-600B. But it still didn't work:-

BTB04-600SL:-

http://www.st.com/stonline/products/literature/ds/8666.pdf
4A, 10ma sensitivity on gate, tab connected to A2

BTA08-600B:-

http://www.ortodoxism.ro/datasheets/stmicroelectronics/7472.pdf
8A, 50ma sensitivity on gate, insulated tab


So I think the gate sensitivity is the main problem

 

[blackhead]

I have a BTB04-600SL with the anodes giving a reading of 0 Ohms aross
them in both directions so it looks as if it's duff and decided to
replace it with BTA08-600B. But it still didn't work:-

BTB04-600SL:-

http://www.st.com/stonline/products/literature/ds/8666.pdf
4A, 10ma sensitivity on gate, tab connected to A2

BTA08-600B:-

http://www.ortodoxism.ro/datasheets/stmicroelectronics/7472.pdf
8A, 50ma sensitivity on gate, insulated tab

So I think the gate sensitivity is the main problem

Sorry, Google posted the message b4 I had finished - don't understand
y.

What's the most effective way of telling if a triac is OK using a
digital multimeter?

Thanks

 

[Eeyore]

I have a BTB04-600SL with the anodes giving a reading of 0 Ohms aross
them in both directions so it looks as if it's duff and decided to
replace it with BTA08-600B. But it still didn't work:-

BTB04-600SL:-

http://www.st.com/stonline/products/literature/ds/8666.pdf
4A, 10ma sensitivity on gate, tab connected to A2

BTA08-600B:-

http://www.ortodoxism.ro/datasheets/stmicroelectronics/7472.pdf
8A, 50ma sensitivity on gate, insulated tab

So I think the gate sensitivity is the main problem

It could well be.

The BTB04 is definitely a 'sensitive gate' type. Damn nuisance to replace.

Graham

 

[blackhead]

It could well be.

The BTB04 is definitely a 'sensitive gate' type. Damn nuisance to replace.

Replaced it with a 2n7063A from Maplin and it works fine.

 

[Phil Allison]

"blackhead"

Replaced it with a 2n7063A from Maplin and it works fine.

** That would be a 2N6073A - right ?

A 4 amp part ( in T0126 pack) that dates from the mid 1970s.

But it is "sensitive gate" .



........ Phil

 

[blackhead]

"blackhead"





** That would be a 2N6073A - right ?

Yes, my mistake.

A 4 amp part ( in T0126 pack) that dates from the mid 1970s.

But it is "sensitive gate" .

Yeah. I love Maplin; for a moment I thought I was gonna have to spend
£20 min to buy an exact replacement from Farnell.