Help with IC replacement

[waldtraut]

Trying to replace a six pin IC. Can't tell the manufacturer, the number is T1L 113 8517. It's from a Moscode 300 amp, built 1985. Can't find anything on the net. Anyone know if it can be replaced/substituted? Thanks for any help.

 

[rayma]

the number is T1L 113 8517. It's from a Moscode 300 amp, built 1985.

That's a TIL113, an optocoupler. Original data sheet: http://www.ti.com/lit/ds/symlink/til113.pdf
Currently available part, only 0.72, with free shipping! https://www.arrow.com/en/products/til113/everlight-electronics
The 8517 is the date code, production of 1985, the 17th week. Good luck.

 

[DUG]

Nicely done rayma.

 

[rayma]

Nicely done rayma.

These were pretty popular in the 80s, and I was around then.

 

[rayma]

Trying to replace a six pin IC. Can't tell the manufacturer, the number is T1L 113 8517.

BTW, the TIL stands for Texas Instruments Linear.

 

[waldtraut]

Thank you very much Rayma! Do I know you from other Moscode 300 posts? Trying to figure out why R36, 2k7 ohm 2 watt resistor burned up. The opto IC, another IC 555p (a timer) and a 2n4410 transistor are in the circuit, so I'm just replacing everything. This circuit controls the speaker output relay, which seems to work OK, and not being a EE, I have no idea what's going on...

 

[rayma]

Thank you very much Rayma! Do I know you from other Moscode 300 posts? Trying to figure out why R36, 2k7 ohm 2 watt resistor burned up. The opto IC, another IC 555p (a timer) and a 2n4410 transistor are in the circuit, so I'm just replacing everything. This circuit controls the speaker output relay, which seems to work OK, and not being a EE, I have no idea what's going on...

I've never owned one, just trying to help. The R36 is part of the protection relay drive circuit,
so check all the parts in there carefully, D12, IC1, Q8, D11, all the electrolytic capacitors associated, etc.