From e441cd660c3231f511b5efafe932ce4bc58d0186 Mon Sep 17 00:00:00 2001
From: dwarning <dietmar.warning@gmail.com>
Date: Mon, 3 Aug 2026 18:07:03 +0200
Subject: [PATCH] stop adding nominal temperature to a temperature difference

---
 src/spicelib/devices/jfet/jfetnoi.c | 2 +-
 src/spicelib/devices/mos1/mos1noi.c | 2 +-
 src/spicelib/devices/mos2/mos2noi.c | 2 +-
 src/spicelib/devices/mos3/mos3noi.c | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/spicelib/devices/jfet/jfetnoi.c b/src/spicelib/devices/jfet/jfetnoi.c
index 3b43275e2..6935d5a2f 100644
--- a/src/spicelib/devices/jfet/jfetnoi.c
+++ b/src/spicelib/devices/jfet/jfetnoi.c
@@ -83,7 +83,7 @@ JFETnoise(int mode, int operation, GENmodel *genmodel, CKTcircuit *ckt, Ndata *d
                 case N_DENS:
 
                     if (inst->JFETtempGiven)
-                        dtemp = inst->JFETtemp - ckt->CKTtemp + (model->JFETtnom-CONSTCtoK);
+                        dtemp = inst->JFETtemp - ckt->CKTtemp;
                     else
                         dtemp = inst->JFETdtemp;
 
diff --git a/src/spicelib/devices/mos1/mos1noi.c b/src/spicelib/devices/mos1/mos1noi.c
index 7b3f9f696..f39e2bb04 100644
--- a/src/spicelib/devices/mos1/mos1noi.c
+++ b/src/spicelib/devices/mos1/mos1noi.c
@@ -98,7 +98,7 @@ MOS1noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
                 case N_DENS:
 
                     if (inst->MOS1tempGiven)
-                        dtemp = inst->MOS1temp - ckt->CKTtemp + (model->MOS1tnom-CONSTCtoK);
+                        dtemp = inst->MOS1temp - ckt->CKTtemp;
                     else
                         dtemp = inst->MOS1dtemp;
 
diff --git a/src/spicelib/devices/mos2/mos2noi.c b/src/spicelib/devices/mos2/mos2noi.c
index fdbecb7f6..ba35474c4 100644
--- a/src/spicelib/devices/mos2/mos2noi.c
+++ b/src/spicelib/devices/mos2/mos2noi.c
@@ -87,7 +87,7 @@ MOS2noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
                 case N_DENS:
 
                     if (inst->MOS2tempGiven)
-                        dtemp = inst->MOS2temp - ckt->CKTtemp + (model->MOS2tnom-CONSTCtoK);
+                        dtemp = inst->MOS2temp - ckt->CKTtemp;
                     else
                         dtemp = inst->MOS2dtemp;
 
diff --git a/src/spicelib/devices/mos3/mos3noi.c b/src/spicelib/devices/mos3/mos3noi.c
index 65afec9e7..93f8a7fe1 100644
--- a/src/spicelib/devices/mos3/mos3noi.c
+++ b/src/spicelib/devices/mos3/mos3noi.c
@@ -87,7 +87,7 @@ MOS3noise(int mode, int operation, GENmodel * genmodel, CKTcircuit * ckt,
                 case N_DENS:
 
                     if (inst->MOS3tempGiven)
-                        dtemp = inst->MOS3temp - ckt->CKTtemp + (model->MOS3tnom-CONSTCtoK);
+                        dtemp = inst->MOS3temp - ckt->CKTtemp;
                     else
                         dtemp = inst->MOS3dtemp;