SSI2131 DIY Friendly Triangle Core VCO IC




EU Customers, pay your local sales tax at the checkout, no extra customs charges on arrival, only on orders below €150 (about GBP £130), over €150 you pay the postman with an extra charge.

Brand new, low cost, easy to use, super stable VCO IC

Build your own VCO at low cost with a tiny number of parts

Enjoy super stability and excellent tracking

Realise your DIY synth dreams!



The SSI2131 inherits the 2130's triangle wave core and the beautifully shaped sawtooth, square and pulse waves derived from it, along with the built in analogue multiplier providing incredibly stable temperature compensation for accurate tracking over 10 octaves.

To round off the package, both linear and exponential frequency modulation both add stunning capabilities to your sonic setup. Soft and hard sync make for exciting classic synth sounds and add amazing control possibilities.

Full details here in the SSI2131 datasheet

This IC is in a 16 pin SOP package, these can be hand soldered with ease, the pins are nice and far apart, if you don't want to drag solder, you can just solder each one individually.

Want more?, the SSI2130 VCO IC adds a sine wave, through zero FM & PM, along with amplitude & ring modulation via it's super fast, super clean, built in 5 channel VCA mixer.


That's not all! We also stock the amazing SSI2140 Four Pole multimode VCF IC!, the SSI2144 Four Pole Folding Transistor Ladder VCF IC! and the SSI2164 Quad exponential VCA IC!

We are authorised resellers for SSI, we ship the day we receive your order (most of the time), all IC's are packed in antistatic bags, and sealed with antistatic tape, antistatic everything, woohoo!




Returns policy

If you're not completely satisfied, You can return these IC's for any reason within 14 days of purchase for a full refund!