From ac6bf7226ac43b40d6c18166f7b0799cb2033c4c Mon Sep 17 00:00:00 2001
From: ABH10 <ah@io2.dk>
Date: Sun, 4 Feb 2018 13:06:21 +0100
Subject: [PATCH] Update of comments in thermistor files. No functional
 changes. (#8986)

---
 Marlin/src/module/thermistor/thermistor_1.h  |  2 +-
 Marlin/src/module/thermistor/thermistor_10.h |  2 +-
 Marlin/src/module/thermistor/thermistor_11.h |  2 +-
 Marlin/src/module/thermistor/thermistor_12.h |  2 +-
 Marlin/src/module/thermistor/thermistor_13.h |  2 +-
 Marlin/src/module/thermistor/thermistor_2.h  |  2 +-
 Marlin/src/module/thermistor/thermistor_3.h  |  2 +-
 Marlin/src/module/thermistor/thermistor_4.h  |  2 +-
 Marlin/src/module/thermistor/thermistor_5.h  |  1 +
 Marlin/src/module/thermistor/thermistor_51.h |  1 +
 Marlin/src/module/thermistor/thermistor_52.h |  1 +
 Marlin/src/module/thermistor/thermistor_55.h |  1 +
 Marlin/src/module/thermistor/thermistor_6.h  |  2 +-
 Marlin/src/module/thermistor/thermistor_60.h |  1 +
 Marlin/src/module/thermistor/thermistor_66.h |  2 +-
 Marlin/src/module/thermistor/thermistor_7.h  |  2 +-
 Marlin/src/module/thermistor/thermistor_70.h |  2 +-
 Marlin/src/module/thermistor/thermistor_71.h |  2 +-
 Marlin/src/module/thermistor/thermistor_75.h |  3 +-
 Marlin/src/module/thermistor/thermistor_8.h  |  2 +-
 Marlin/src/module/thermistor/thermistor_9.h  |  2 +-
 Marlin/src/module/thermistor/thermistors.h   | 42 ++++++++++----------
 22 files changed, 43 insertions(+), 37 deletions(-)

diff --git a/Marlin/src/module/thermistor/thermistor_1.h b/Marlin/src/module/thermistor/thermistor_1.h
index c3395a5aa9..ea887952f5 100644
--- a/Marlin/src/module/thermistor/thermistor_1.h
+++ b/Marlin/src/module/thermistor/thermistor_1.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 100k bed thermistor
+// R25 = 100 kOhm, beta25 = 4092 K, 4.7 kOhm pull-up, bed thermistor
 const short temptable_1[][2] PROGMEM = {
   { OV(  23), 300 },
   { OV(  25), 295 },
diff --git a/Marlin/src/module/thermistor/thermistor_10.h b/Marlin/src/module/thermistor/thermistor_10.h
index 2a49d6b144..b54425fff8 100644
--- a/Marlin/src/module/thermistor/thermistor_10.h
+++ b/Marlin/src/module/thermistor/thermistor_10.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 100k RS thermistor 198-961 (4.7k pullup)
+// R25 = 100 kOhm, beta25 = 3960 K, 4.7 kOhm pull-up, RS thermistor 198-961
 const short temptable_10[][2] PROGMEM = {
   { OV(   1), 929 },
   { OV(  36), 299 },
diff --git a/Marlin/src/module/thermistor/thermistor_11.h b/Marlin/src/module/thermistor/thermistor_11.h
index cc5715b78e..eb8030697f 100644
--- a/Marlin/src/module/thermistor/thermistor_11.h
+++ b/Marlin/src/module/thermistor/thermistor_11.h
@@ -20,7 +20,7 @@
  *
  */
 
-// QU-BD silicone bed QWG-104F-3950 thermistor
+// R25 = 100 kOhm, beta25 = 3950 K, 4.7 kOhm pull-up, QU-BD silicone bed QWG-104F-3950 thermistor
 const short temptable_11[][2] PROGMEM = {
   { OV(   1), 938 },
   { OV(  31), 314 },
diff --git a/Marlin/src/module/thermistor/thermistor_12.h b/Marlin/src/module/thermistor/thermistor_12.h
index aff539e2ce..c05ba4077b 100644
--- a/Marlin/src/module/thermistor/thermistor_12.h
+++ b/Marlin/src/module/thermistor/thermistor_12.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
+// R25 = 100 kOhm, beta25 = 4700 K, 4.7 kOhm pull-up, (personal calibration for Makibox hot bed)
 const short temptable_12[][2] PROGMEM = {
   { OV(  35), 180 }, // top rating 180C
   { OV( 211), 140 },
diff --git a/Marlin/src/module/thermistor/thermistor_13.h b/Marlin/src/module/thermistor/thermistor_13.h
index b4d827e455..b0bfd8aa62 100644
--- a/Marlin/src/module/thermistor/thermistor_13.h
+++ b/Marlin/src/module/thermistor/thermistor_13.h
@@ -20,7 +20,7 @@
  *
  */
 
-// Hisens thermistor B25/50 =3950 +/-1%
+// R25 = 100 kOhm, beta25 = 4100 K, 4.7 kOhm pull-up, Hisens thermistor
 const short temptable_13[][2] PROGMEM = {
   { OV( 20.04), 300 },
   { OV( 23.19), 290 },
diff --git a/Marlin/src/module/thermistor/thermistor_2.h b/Marlin/src/module/thermistor/thermistor_2.h
index 03c2d39bea..e747b2ffad 100644
--- a/Marlin/src/module/thermistor/thermistor_2.h
+++ b/Marlin/src/module/thermistor/thermistor_2.h
@@ -21,7 +21,7 @@
  */
 
 //
-// 200k ATC Semitec 204GT-2
+// R25 = 200 kOhm, beta25 = 4338 K, 4.7 kOhm pull-up, ATC Semitec 204GT-2
 // Verified by linagee. Source: http://shop.arcol.hu/static/datasheets/thermistors.pdf
 // Calculated using 4.7kohm pullup, voltage divider math, and manufacturer provided temp/resistance
 //
diff --git a/Marlin/src/module/thermistor/thermistor_3.h b/Marlin/src/module/thermistor/thermistor_3.h
index 3a5a0141f9..a82a9b6ff9 100644
--- a/Marlin/src/module/thermistor/thermistor_3.h
+++ b/Marlin/src/module/thermistor/thermistor_3.h
@@ -20,7 +20,7 @@
  *
  */
 
-// mendel-parts
+// R25 = 100 kOhm, beta25 = 4120 K, 4.7 kOhm pull-up, mendel-parts
 const short temptable_3[][2] PROGMEM = {
   { OV(   1), 864 },
   { OV(  21), 300 },
diff --git a/Marlin/src/module/thermistor/thermistor_4.h b/Marlin/src/module/thermistor/thermistor_4.h
index 8a611a2064..6c3ea61709 100644
--- a/Marlin/src/module/thermistor/thermistor_4.h
+++ b/Marlin/src/module/thermistor/thermistor_4.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 10k thermistor
+// R25 = 10 kOhm, beta25 = 3950 K, 4.7 kOhm pull-up, Generic 10k thermistor
 const short temptable_4[][2] PROGMEM = {
   { OV(   1), 430 },
   { OV(  54), 137 },
diff --git a/Marlin/src/module/thermistor/thermistor_5.h b/Marlin/src/module/thermistor/thermistor_5.h
index 8a5b9fd1a3..676fbbd460 100644
--- a/Marlin/src/module/thermistor/thermistor_5.h
+++ b/Marlin/src/module/thermistor/thermistor_5.h
@@ -20,6 +20,7 @@
  *
  */
 
+// R25 = 100 kOhm, beta25 = 4267 K, 4.7 kOhm pull-up
 // 100k ParCan thermistor (104GT-2)
 // ATC Semitec 104GT-2/104NT-4-R025H42G (Used in ParCan)
 // Verified by linagee. Source: http://shop.arcol.hu/static/datasheets/thermistors.pdf
diff --git a/Marlin/src/module/thermistor/thermistor_51.h b/Marlin/src/module/thermistor/thermistor_51.h
index 198f564c4f..0746c70558 100644
--- a/Marlin/src/module/thermistor/thermistor_51.h
+++ b/Marlin/src/module/thermistor/thermistor_51.h
@@ -20,6 +20,7 @@
  *
  */
 
+// R25 = 100 kOhm, beta25 = 4092 K, 1 kOhm pull-up,
 // 100k EPCOS (WITH 1kohm RESISTOR FOR PULLUP, R9 ON SANGUINOLOLU! NOT FOR 4.7kohm PULLUP! THIS IS NOT NORMAL!)
 // Verified by linagee.
 // Calculated using 1kohm pullup, voltage divider math, and manufacturer provided temp/resistance
diff --git a/Marlin/src/module/thermistor/thermistor_52.h b/Marlin/src/module/thermistor/thermistor_52.h
index 361ebb4276..63b53e1a70 100644
--- a/Marlin/src/module/thermistor/thermistor_52.h
+++ b/Marlin/src/module/thermistor/thermistor_52.h
@@ -20,6 +20,7 @@
  *
  */
 
+// R25 = 200 kOhm, beta25 = 4338 K, 1 kOhm pull-up,
 // 200k ATC Semitec 204GT-2 (WITH 1kohm RESISTOR FOR PULLUP, R9 ON SANGUINOLOLU! NOT FOR 4.7kohm PULLUP! THIS IS NOT NORMAL!)
 // Verified by linagee. Source: http://shop.arcol.hu/static/datasheets/thermistors.pdf
 // Calculated using 1kohm pullup, voltage divider math, and manufacturer provided temp/resistance
diff --git a/Marlin/src/module/thermistor/thermistor_55.h b/Marlin/src/module/thermistor/thermistor_55.h
index c4f3961dd4..aa6677febe 100644
--- a/Marlin/src/module/thermistor/thermistor_55.h
+++ b/Marlin/src/module/thermistor/thermistor_55.h
@@ -20,6 +20,7 @@
  *
  */
 
+// R25 = 100 kOhm, beta25 = 4267 K, 1 kOhm pull-up,
 // 100k ATC Semitec 104GT-2 (Used on ParCan) (WITH 1kohm RESISTOR FOR PULLUP, R9 ON SANGUINOLOLU! NOT FOR 4.7kohm PULLUP! THIS IS NOT NORMAL!)
 // Verified by linagee. Source: http://shop.arcol.hu/static/datasheets/thermistors.pdf
 // Calculated using 1kohm pullup, voltage divider math, and manufacturer provided temp/resistance
diff --git a/Marlin/src/module/thermistor/thermistor_6.h b/Marlin/src/module/thermistor/thermistor_6.h
index ab21ae6677..bb97267ba9 100644
--- a/Marlin/src/module/thermistor/thermistor_6.h
+++ b/Marlin/src/module/thermistor/thermistor_6.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 100k Epcos thermistor
+// R25 = 100 kOhm, beta25 = 4092 K, 8.2 kOhm pull-up, 100k Epcos (?) thermistor
 const short temptable_6[][2] PROGMEM = {
   { OV(   1), 350 },
   { OV(  28), 250 }, // top rating 250C
diff --git a/Marlin/src/module/thermistor/thermistor_60.h b/Marlin/src/module/thermistor/thermistor_60.h
index 3340ac6b56..ab92406f46 100644
--- a/Marlin/src/module/thermistor/thermistor_60.h
+++ b/Marlin/src/module/thermistor/thermistor_60.h
@@ -20,6 +20,7 @@
  *
  */
 
+// R25 = 100 kOhm, beta25 = 3950 K, 4.7 kOhm pull-up,
 // Maker's Tool Works Kapton Bed Thermistor
 // ./createTemperatureLookup.py --r0=100000 --t0=25 --r1=0 --r2=4700 --beta=3950
 // r0: 100000
diff --git a/Marlin/src/module/thermistor/thermistor_66.h b/Marlin/src/module/thermistor/thermistor_66.h
index eae3a2320b..197029082c 100644
--- a/Marlin/src/module/thermistor/thermistor_66.h
+++ b/Marlin/src/module/thermistor/thermistor_66.h
@@ -20,7 +20,7 @@
  *
  */
 
-// DyzeDesign 500°C Thermistor
+// R25 = 2.5 MOhm, beta25 = 4500 K, 4.7 kOhm pull-up, DyzeDesign 500 °C Thermistor
 const short temptable_66[][2] PROGMEM = {
   { OV(  17.5), 850 },
   { OV(  17.9), 500 },
diff --git a/Marlin/src/module/thermistor/thermistor_7.h b/Marlin/src/module/thermistor/thermistor_7.h
index 5302a40568..025c53ce97 100644
--- a/Marlin/src/module/thermistor/thermistor_7.h
+++ b/Marlin/src/module/thermistor/thermistor_7.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 100k Honeywell 135-104LAG-J01
+// R25 = 100 kOhm, beta25 = 3974 K, 4.7 kOhm pull-up, Honeywell 135-104LAG-J01
 const short temptable_7[][2] PROGMEM = {
   { OV(   1), 941 },
   { OV(  19), 362 },
diff --git a/Marlin/src/module/thermistor/thermistor_70.h b/Marlin/src/module/thermistor/thermistor_70.h
index 990e45f3c0..fd7838b809 100644
--- a/Marlin/src/module/thermistor/thermistor_70.h
+++ b/Marlin/src/module/thermistor/thermistor_70.h
@@ -20,7 +20,7 @@
  *
  */
 
-// bqh2 stock thermistor
+// R25 = 100 kOhm, beta25 = 4100 K, 4.7 kOhm pull-up, bqh2 stock thermistor
 const short temptable_70[][2] PROGMEM = {
   { OV(  22), 300 },
   { OV(  24), 295 },
diff --git a/Marlin/src/module/thermistor/thermistor_71.h b/Marlin/src/module/thermistor/thermistor_71.h
index 2ba14d0cbe..c7b8a64e30 100644
--- a/Marlin/src/module/thermistor/thermistor_71.h
+++ b/Marlin/src/module/thermistor/thermistor_71.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 100k Honeywell 135-104LAF-J01
+// R25 = 100 kOhm, beta25 = 3974 K, 4.7 kOhm pull-up, Honeywell 135-104LAF-J01
 // R0 = 100000 Ohm
 // T0 = 25 °C
 // Beta = 3974
diff --git a/Marlin/src/module/thermistor/thermistor_75.h b/Marlin/src/module/thermistor/thermistor_75.h
index 01be61146d..5d9350a9ce 100644
--- a/Marlin/src/module/thermistor/thermistor_75.h
+++ b/Marlin/src/module/thermistor/thermistor_75.h
@@ -20,7 +20,8 @@
  *
  */
 
-// Generic Silicon Heat Pad with NTC 100K thermistor ( Beta 25/50 3950K)
+// R25 = 100 kOhm, beta25 = 4100 K, 4.7 kOhm pull-up,
+// Generic Silicon Heat Pad with NTC 100K thermistor
 //
 // Many of the generic silicon heat pads use the MGB18-104F39050L32 Thermistor   It is used for various
 // wattage and voltage heat pads.  This table is correct if this part is used.   It has been
diff --git a/Marlin/src/module/thermistor/thermistor_8.h b/Marlin/src/module/thermistor/thermistor_8.h
index 2a27f7c6f5..3ef78da0c5 100644
--- a/Marlin/src/module/thermistor/thermistor_8.h
+++ b/Marlin/src/module/thermistor/thermistor_8.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
+// R25 = 100 kOhm, beta25 = 3950 K, 10 kOhm pull-up, NTCS0603E3104FHT
 const short temptable_8[][2] PROGMEM = {
   { OV(   1), 704 },
   { OV(  54), 216 },
diff --git a/Marlin/src/module/thermistor/thermistor_9.h b/Marlin/src/module/thermistor/thermistor_9.h
index 2d83dd47a3..e9ef924d1f 100644
--- a/Marlin/src/module/thermistor/thermistor_9.h
+++ b/Marlin/src/module/thermistor/thermistor_9.h
@@ -20,7 +20,7 @@
  *
  */
 
-// 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
+// R25 = 100 kOhm, beta25 = 3960 K, 4.7 kOhm pull-up, GE Sensing AL03006-58.2K-97-G1
 const short temptable_9[][2] PROGMEM = {
   { OV(   1), 936 },
   { OV(  36), 300 },
diff --git a/Marlin/src/module/thermistor/thermistors.h b/Marlin/src/module/thermistor/thermistors.h
index ce252d872e..9083a7df86 100644
--- a/Marlin/src/module/thermistor/thermistors.h
+++ b/Marlin/src/module/thermistor/thermistors.h
@@ -40,43 +40,43 @@
 #define PtAdVal(T,R0,Rup) (short)(1024/(Rup/PtRt(T,R0)+1))
 #define PtLine(T,R0,Rup) { OV(PtAdVal(T,R0,Rup)), T },
 
-#if ANY_THERMISTOR_IS(1) // 100k bed thermistor
+#if ANY_THERMISTOR_IS(1) // beta25 = 4092 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "EPCOS"
   #include "thermistor_1.h"
 #endif
-#if ANY_THERMISTOR_IS(2) // 200k bed thermistor
+#if ANY_THERMISTOR_IS(2) // 4338 K, R25 = 200 kOhm, Pull-up = 4.7 kOhm, "ATC Semitec 204GT-2"
   #include "thermistor_2.h"
 #endif
-#if ANY_THERMISTOR_IS(3) // mendel-parts
+#if ANY_THERMISTOR_IS(3) // beta25 = 4120 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Mendel-parts"
   #include "thermistor_3.h"
 #endif
-#if ANY_THERMISTOR_IS(4) // 10k thermistor
+#if ANY_THERMISTOR_IS(4) // beta25 = 3950 K, R25 = 10 kOhm, Pull-up = 4.7 kOhm, "Generic"
   #include "thermistor_4.h"
 #endif
-#if ANY_THERMISTOR_IS(5) // 100k ParCan thermistor (104GT-2)
+#if ANY_THERMISTOR_IS(5) // beta25 = 4267 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "ParCan, ATC 104GT-2"
   #include "thermistor_5.h"
 #endif
-#if ANY_THERMISTOR_IS(6) // 100k Epcos thermistor
+#if ANY_THERMISTOR_IS(6) // beta25 = 4092 K, R25 = 100 kOhm, Pull-up = 8.2 kOhm, "EPCOS ?"
   #include "thermistor_6.h"
 #endif
-#if ANY_THERMISTOR_IS(7) // 100k Honeywell 135-104LAG-J01
+#if ANY_THERMISTOR_IS(7) // beta25 = 3974 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Honeywell 135-104LAG-J01"
   #include "thermistor_7.h"
 #endif
-#if ANY_THERMISTOR_IS(71) // 100k Honeywell 135-104LAF-J01
+#if ANY_THERMISTOR_IS(71) // beta25 = 3974 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Honeywell 135-104LAF-J01"
   #include "thermistor_71.h"
 #endif
-#if ANY_THERMISTOR_IS(8) // 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
+#if ANY_THERMISTOR_IS(8) // beta25 = 3950 K, R25 = 100 kOhm, Pull-up = 10 kOhm, "Vishay E3104FHT"
   #include "thermistor_8.h"
 #endif
-#if ANY_THERMISTOR_IS(9) // 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
+#if ANY_THERMISTOR_IS(9) // beta25 = 3960 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "GE Sensing AL03006-58.2K-97-G1"
   #include "thermistor_9.h"
 #endif
-#if ANY_THERMISTOR_IS(10) // 100k RS thermistor 198-961 (4.7k pullup)
+#if ANY_THERMISTOR_IS(10) // beta25 = 3960 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "RS 198-961"
   #include "thermistor_10.h"
 #endif
-#if ANY_THERMISTOR_IS(11) // QU-BD silicone bed QWG-104F-3950 thermistor
+#if ANY_THERMISTOR_IS(11) // beta25 = 3950 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "QU-BD silicone bed, QWG-104F-3950"
   #include "thermistor_11.h"
 #endif
-#if ANY_THERMISTOR_IS(13) // Hisens thermistor B25/50 =3950 +/-1%
+#if ANY_THERMISTOR_IS(13) // beta25 = 4100 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Hisens"
   #include "thermistor_13.h"
 #endif
 #if ANY_THERMISTOR_IS(15) // JGAurora A5 thermistor calibration
@@ -85,28 +85,28 @@
 #if ANY_THERMISTOR_IS(20) // PT100 with INA826 amp on Ultimaker v2.0 electronics
   #include "thermistor_20.h"
 #endif
-#if ANY_THERMISTOR_IS(51) // 100k EPCOS (WITH 1kohm RESISTOR FOR PULLUP, R9 ON SANGUINOLOLU! NOT FOR 4.7kohm PULLUP! THIS IS NOT NORMAL!)
+#if ANY_THERMISTOR_IS(51) // beta25 = 4092 K, R25 = 100 kOhm, Pull-up = 1 kOhm, "EPCOS"
   #include "thermistor_51.h"
 #endif
-#if ANY_THERMISTOR_IS(52) // 200k ATC Semitec 204GT-2 (WITH 1kohm RESISTOR FOR PULLUP, R9 ON SANGUINOLOLU! NOT FOR 4.7kohm PULLUP! THIS IS NOT NORMAL!)
+#if ANY_THERMISTOR_IS(52) // beta25 = 4338 K, R25 = 200 kOhm, Pull-up = 1 kOhm, "ATC Semitec 204GT-2"
   #include "thermistor_52.h"
 #endif
-#if ANY_THERMISTOR_IS(55) // 100k ATC Semitec 104GT-2 (Used on ParCan) (WITH 1kohm RESISTOR FOR PULLUP, R9 ON SANGUINOLOLU! NOT FOR 4.7kohm PULLUP! THIS IS NOT NORMAL!)
+#if ANY_THERMISTOR_IS(55) // beta25 = 4267 K, R25 = 100 kOhm, Pull-up = 1 kOhm, "ATC Semitec 104GT-2 (Used on ParCan)"
   #include "thermistor_55.h"
 #endif
-#if ANY_THERMISTOR_IS(60) // Maker's Tool Works Kapton Bed Thermistor
+#if ANY_THERMISTOR_IS(60) // beta25 = 3950 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Maker's Tool Works Kapton Bed"
   #include "thermistor_60.h"
 #endif
-#if ANY_THERMISTOR_IS(66) // DyzeDesign 500°C Thermistor
+#if ANY_THERMISTOR_IS(66) // beta25 = 4500 K, R25 = 2.5 MOhm, Pull-up = 4.7 kOhm, "DyzeDesign 500 °C Thermistor"
   #include "thermistor_66.h"
 #endif
-#if ANY_THERMISTOR_IS(12) // 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
+#if ANY_THERMISTOR_IS(12) // beta25 = 4700 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Personal calibration for Makibox hot bed"
   #include "thermistor_12.h"
 #endif
-#if ANY_THERMISTOR_IS(70) // bqh2 stock thermistor
+#if ANY_THERMISTOR_IS(70) // beta25 = 4100 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Hephestos 2, bqh2 stock thermistor"
   #include "thermistor_70.h"
 #endif
-#if ANY_THERMISTOR_IS(75) // Many of the generic silicon heat pads use the MGB18-104F39050L32 Thermistor
+#if ANY_THERMISTOR_IS(75) // beta25 = 4100 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "MGB18-104F39050L32 thermistor"
   #include "thermistor_75.h"
 #endif
 #if ANY_THERMISTOR_IS(110) // Pt100 with 1k0 pullup