Behavioural mixed-signal modelNCP18XH103F03RBntc
NTC thermistor 10 kΩ
Temperature-dependent resistor (negative temperature coefficient), Beta model R = R25 · e^(B·(1/T − 1/298.15 K)): 10 kΩ at 25 °C, about 3.3 kΩ at 50 °C. The temperature is adjustable in the inspector, also during simulation. Typical: voltage divider with 10 kΩ to an ADC input.
Key data
- Category
- Passive
- Simulation model
- Behavioural mixed-signal model
- Manufacturer part number
- NCP18XH103F03RB
- Reference prefix
- TH
- Pins
- 2
- Land pattern
- R_0603_1608Metric
Notes
- Divider with 10 kΩ from the supply: V_ADC = V · R_NTC / (R_NTC + 10 kΩ); the firmware computes T = 1 / (1/298.15 K + ln(R/R25) / B) − 273.15.
Simulation model
A behavioural model implements the interface of the chip (registers, protocol, timing) at its pins. The pins are connected to the analog circuit like CMOS pins.
- Model
- ntc
- Supply pins
- 1 / 2
Pins 2
| Pin | Name | Use |
|---|---|---|
| 1 | 1Passive pin | Thermistor lead: e.g. to the supply, the other lead to the ADC input with 10 kΩ to GND |
| 2 | 2Passive pin | Thermistor lead (no polarity) |
Parameters 3
Temperature
templiveDefault25 °C
Resistance at 25 °C
R25Default10k Ω
B constant
BDefault3435 K
Murata NCP18XH103: B25/85 = 3435 K, B25/50 = 3380 K
PCB
Verified land pattern
R_0603_1608Metric| Package | Land pattern | Status | Source |
|---|---|---|---|
| 0603 · NCP18XH103F03RB | R_0603_1608Metric | Verified land pattern | KiCad Resistor_SMD:R_0603_1608Metric (Murata NCP18 is an 0603 chip, no polarity) |