Chip NTC Thermistor Simulation

Instruction Video

Why Do You Need This Simulation Tool?

Advantage 1: Save time and money on creating prototype boards
By pairing an NTC Thermistor with a resistor, you can achieve various temperature-voltage curves. This simulation tool can perform 10 different temperature/voltage simulations as shown in the figure on the right.

Advantage 2: Find the right thermistor for your design requirements, reducing potential issues
To use a NTC thermistor safely, you can check its own temperature rise. If self-heating exceeds the specified value within the usage temperature range, the NTC thermistor may heat up, and in the worst case, lead to a malfunction. For safe usage, please verify the recommended NTC thermistor and resistance value for each circuit by simulation in advance.
>>Failure Modes and Countermeasures in Actual Use of NTC Thermistors

Product Type

Application
Commercial Grade(-40～125℃)

Automotive Grade(-40～125℃)

Automotive Grade(-40～150℃)
Chip Size

Conditions

Vin / V (5V Max.) ?
Temperature Range / ℃ ? to
Vout / V (0<Vout<Vin) ? to

R1 Tolerance / %

R2 Tolerance / %

R3 Tolerance / %
Temp.ppm / ppm/℃

[Current condition]

Circuit 1 Circuit 2 Circuit 3 Circuit 4 Circuit5 Circuit6 Circuit7 Circuit8 Circuit9 Circuit10

General circuit. By dividing the voltage into a thermistor and fixed resistor, it prevents thermal runaway due to self-heating of the thermistor.
Vout decreases with temperature rise.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω

General circuit. By dividing the voltage into a thermistor and fixed resistor, it prevents thermal runaway due to self-heating of the thermistor.
Vout increases with temperature rise.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω

You can adjust Vout by adjusting R1 & R2. (R1:Low temp side) Vout decreases with temperature rise. Also, self-heating of the thermistor can be reduced.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω	Recommended R2/Ω

You can adjust Vout by adjusting R1 & R2. (R1:High temp. side) Vout decreases with temperature rise. Also, self-heating of the thermistor can be reduced.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω	Recommended R2/Ω

You can adjust Vout by adjusting R1 & R2. (R2:Low temp. side) Vout increases with temperature rise. Also, self-heating of the thermistor can be reduced.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω	Recommended R2/Ω

You can adjust Vout by adjusting R1 & R2. (R2:High temp. side) Vout increases with temperature rise. Also, self-heating of the thermistor can be reduced.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω	Recommended R2/Ω

You can adjust Vout by adjusting R1, R2 & R3. (R1:High temp. side, R2:Low temp. side) Vout decreases with temperature rise. Also, self-heating of the thermistor can be reduced.

Depending on the conditions, the simulation may take up to one minute.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω	Recommended R2/Ω	Recommended R3/Ω

You can adjust Vout by adjusting R1, R2 & R3. (R2:High temp. side, R3:Low temp. side) Vout increases with temperature rise. Also, self-heating of the thermistor can be reduced.

Depending on the conditions, the simulation may take up to one minute.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω	Recommended R2/Ω	Recommended R3/Ω

You can adjust Vout by adjusting R1, R2 & R3. (R1:High temp. side, R2:Low temp. side) Vout decreases with temperature rise. Also, self-heating of the thermistor can be reduced.

Depending on the conditions, the simulation may take up to one minute.

Graph	Judgement ?	R25 / Ω	Part No. ?	Tolerance / %	B value [25/50°C] / K	B value [25/85°C] / K	B value [25/100°C] / K	Recommended R1/Ω	Recommended R2/Ω	Recommended R3/Ω

You can adjust Vout by adjusting R1, R2 & R3. (R2:High temp. side, R3:Low temp. side) Vout increases with temperature rise. Also, self-heating of the thermistor can be reduced.