Pith Number

pith:ON6S2PRU

pith:2026:ON6S2PRUD7DYJSSNJ2N2VUFHLM

not attested not anchored not stored refs pending

DC Cryogenic Modeling of Open-Source SkyWater 130 nm MOSFETs at 77 K Using BSIM4

A.D.McDonald, A.Rimal, D.Braga, F.Beall, I. Parmaksiz, J.Asaadi, J.B.R.Battat, O.Seidel, V.A.Chirayath, Y.Mei

Re-extracting a subset of BSIM4 parameters from 77 K measurements produces a usable isothermal SPICE model for SkyWater 130 nm MOSFETs with roughly 20 percent average error.

arxiv:2604.21625 v2 · 2026-04-23 · cond-mat.mes-hall · hep-ex

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\pithnumber{ON6S2PRUD7DYJSSNJ2N2VUFHLM}

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Claims

C1strongest claim

We created a cryogenic modeling approach to produce a SPICE-compatible, isothermal BSIM4-based model for select transistor sizes at 77 K. The resulting model agrees with data at 77 K with an average error on the order of 20% (relative RMS) and shows no dependence on drain voltage.

C2weakest assumption

That re-extracting a subset of BSIM4 parameters from 77 K DC data is sufficient to produce a usable isothermal model without additional temperature-dependent equations or self-heating corrections.

C3one line summary

An isothermal BSIM4 model for SKY130 transistors at 77 K was extracted from measurements and validated with ~20% relative RMS error independent of drain voltage.

Receipt and verification

First computed	2026-06-01T01:02:40.205369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

737d2d3e341fc784ca4d4e9baad0a75b20ad2a432c2ea30135a837aaddfe115d

Aliases

arxiv: 2604.21625 · arxiv_version: 2604.21625v2 · doi: 10.48550/arxiv.2604.21625 · pith_short_12: ON6S2PRUD7DY · pith_short_16: ON6S2PRUD7DYJSSN · pith_short_8: ON6S2PRU

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ON6S2PRUD7DYJSSNJ2N2VUFHLM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 737d2d3e341fc784ca4d4e9baad0a75b20ad2a432c2ea30135a837aaddfe115d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdce57392ef7790632ac46a023d0a97fb5265061e66f50ca4c5985b09ae3a30f",
    "cross_cats_sorted": [
      "hep-ex"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2026-04-23T12:45:11Z",
    "title_canon_sha256": "6c314ff8df453bce5cce64f864a9640efadfa70ed9fa40fb11db0593f3cf3ad0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.21625",
    "kind": "arxiv",
    "version": 2
  }
}