Transistors have been around for quite some time and it can often be a challenge to replace them in an old electronic device. DigiKey has a knack for finding and supplying replacements to these old transistors. 2SC756 is just one of those old transistors.
2SC756 is an NPN TO39 (Can Type) transistor. This style has become quite uncommon. With a look at the datasheet we were able to find a stocking solution to replace this in NTE2347.
If there are any questions on this, please reply to this post and we will be happy to address them.
Please review the datasheets to ensure the alternative will work for your apllication.