TE Connectivity GA100K6A1IA BetaCURVE Series II NTC Thermistor, 100 kΩ, Bead Type, PTFE Insulated Leads

The GA100K6A1IA has a nominal resistance of 100 kΩ at 25°C. It is part of the BetaCURVE Series II, which is known for high interchangeability, and is available in several standard tolerance classes (e.g., ±1%, ±2%). You should consult the specific datasheet for the exact tolerance of your ordered variant.

The PTFE (Polytetrafluoroethylene) insulation provides excellent chemical resistance, high-temperature stability, and superior dielectric properties. This ensures signal integrity is maintained in harsh environments, prevents insulation breakdown, and allows the sensor to perform reliably across its full -40°C to +125°C operating range.

This is a passive resistive sensor. You typically connect it in a voltage divider circuit with a known precision resistor. The center tap is connected to an analog input pin on your microcontroller. The measured voltage is then converted using the Steinhart-Hart equation or a lookup table based on the sensor's beta (β) value or resistance-temperature curve to calculate the temperature.

Fully interchangeable means that any sensor within the same BetaCURVE tolerance class can replace another without requiring system recalibration. This is achieved through tight manufacturing controls on the resistance-temperature curve (R-T curve), ensuring consistent performance from one unit to the next, which simplifies inventory management and field replacements.

The thermal time constant indicates how quickly the sensor responds to temperature changes. The thermally conductive epoxy encapsulation (Stycast) used in this sensor improves thermal coupling between the environment and the NTC bead, resulting in a faster response time compared to air-gapped or poorly coupled designs. The exact time constant value is specified in the full datasheet.