skywater-pdk-libs-sky130_fd_pr (fossi-foundation)VerificationConfidence: Medium

After converting SkyWater Spectre model data to ngspice, sw_nw_rs_mult came out near 2, PNP beta was 29 to 34 instead of about 18.4, junction capacitance did not vary, and devices disagreed with each other.

Impact Analysis

Persona

Hardware Engineer

Team Size Impact

5x Multiplier

Prototype Delay

3 Days

Est. Annual Cost

$30,000

1 user · 1 month240 min
Rest of team960 min
Rest of year13,200 min

monthly_minutes × 12 × team_multiplier ÷ 60 × $75/hr = $30k/yr

$75/hr assumed rate.

Annual team-minutes decomposed from the reported monthly inputs.

Evidence & Sources

1 Sources

fossi-foundation/skywater-pdk-libs-sky130_fd_pr PR #8: Rework of the Monte Carlo parameters for the continuous models

github.com

→

Analyst Notes

From the Grok pain-radar digests, Oct 26-27 2026 (Oct 26 12:41 PM ET through Oct 27 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-27: issue/PR/thread read; title and state confirmed.