RX-MODEL

⬤

Rhonexum introduces the RX-Model — a SPICE-compatible compact model built specifically for cryogenic circuit simulation.

While traditional models struggle at ultra-low temperatures, relying on bloated room-temperature frameworks with hundreds of parameters, the RX-Model sets a new standard: fast, stable, and cryo-native.

● A tiny chip like this can have massive costs and delay. in ourdays, a fabrication cycle can take up to $25k per mm2 in 8 months.

86%

of the designs fail on the first try.
That’s where we start.

fewer chips.
less cash.
faster results.

Existing Solutions

10 manufacturing runs

1 manufacturing run

80 months

8 months

$2M

$200K

90% Time & Cost reduction

Existing Solutions

10 manufacturing runs

80 months

$2M

1 manufacturing run

8 months

$200K

90% Time & Cost reduction

Let’s design a circuit together.

SET FUNCTIONALITIES

DERIVE REQUIREMENTS

[ START ITERATIONS ]

CHOOSE COMPONENTS

DESIGN CIRCUIT

BLIND DESIGN PROCESS

[ NO SIMULATION ]

RX-MODEL

[ SIMULATION ]

MANUFACTURING

TESTING

[ END ITERATIONS ]

LAUNCH CIRCUIT!

manufacturing runs

months

with rx-model

manufacturing runs

months

200K

Engineered with a physics-based, semi-empirical approach and advanced normalization techniques, RX-Model delivers robust, numerically stable simulations across cryogenic regimes. It’s technology-agnostic, working seamlessly with various CMOS processes.

Unlike conventional tools, RX-Model captures key cryogenic effects — like quantum transport — without convergence issues. It uses significantly fewer parameters, is deployable in days, and plugs effortlessly into both commercial and open-source platforms.

simulation display example

PREVIEW AVAILABLE SOON