Datasheet
A2 NTC Thermistor
A2 NTC Thermistor
Description:
Leadless chip NTC thermistor with top and bottom wire bondable gold metalized contacts. Available in a variety of R-T Curve and R25 values. RoHS compliant without exemptions - lead and cadmium free.
Features:
- Gold wire bondable
- Suitable for die mounting with conductive epoxy
- Exceptional stability and reliability
- RoHS compliant without exemptions
- Available in point-matched tolerances from 0° C to 100° C
The A2 leadless NTC thermistor style was developed specifically for applications where a gold wire bond is required and RoHS compliance without exemptions is desired. This configuration is ideal for mounting on hybrid substrates, integrated circuits, or printed circuit boards. Contact us at info@northstarsensors.com for assistance with your unique application.
Applications:
- Integrated circuits
- Infrared detectors
- Tunable lasers and optical filters
- Small package electronics
- Industrial controls
- Cold junction compensation
A2 NTC Thermistor
Typical Configurations:
| Part Number | Resistance at 25 °C |
Resistance Tolerance |
Die Size LxWxH |
R/T Curve |
25 °C / 85 °C β |
|---|---|---|---|---|---|
| A2A103R44P2W | 10 kΩ | ±2% at 25 °C | 0.017” x 0.017” x 0.005” ( 0.43 x 0.43 x 0.13 ) mm | 44 | 3978 |
| A2B303R43P5W | 30 kΩ | ±5% at 25 °C | 0.027” x 0.027” x 0.011” ( 0.69 x 0.69 x 0.28 ) mm | 43 | 3943 |
| A2A104R47P5W | 100 kΩ | ±5% at 25 °C | 0.030” x 0.030” x 0.013” ( 0.76 x 0.76 x 0.33 ) mm | 47 | 4262 |
| A2D102R38P5W | 1 kΩ | ±5% at 25 °C | 0.034” x 0.034” x 0.011” ( 0.86 x 0.86 x 0.28 ) mm | 38 | 3486 |
A wide variety of configurations are possible. Contact us at
info@northstarsensors.com for assistance with your unique application.
Other Specifications:
| Recommended Operating Temperature | -50 °C to 100 °C |
|---|---|
| Recommended Measurement Current | < 50 µA when mounted |
| Time Constant | ~ 100 ms unmounted in stirred liquid |
| Dissipation Constant | ~ 0.3 mW / °C umounted in ambient air |
| RoHS and REACH | Compliant |
Resistance Ratio vs Temperature Conversion Tables
| °C | CURVE 38 | CURVE 43 | CURVE 44 | CURVE 47 | ||||
|---|---|---|---|---|---|---|---|---|
| Ω RATIO | NTC | Ω RATIO | NTC | Ω RATIO | NTC | Ω RATIO | NTC | |
| RT / R25 | (%/°C) | RT / R25 | (%/°C) | RT / R25 | (%/°C) | RT / R25 | (%/°C) | |
| 0 | 2.815 | -4.46 | 3.1660 | -4.94 | 3.2651 | -5.11 | 3.5102 | -5.40 |
| 5 | 2.260 | -4.33 | 2.4815 | -4.80 | 2.5393 | -4.95 | 2.6904 | -5.24 |
| 10 | 1.826 | -4.20 | 1.9583 | -4.67 | 1.9901 | -4.80 | 2.0780 | -5.09 |
| 15 | 1.485 | -4.07 | 1.5556 | -4.54 | 1.5712 | -4.66 | 1.6170 | -4.94 |
| 20 | 1.215 | -3.95 | 1.2434 | -4.42 | 1.2493 | -4.52 | 1.2673 | -4.80 |
| 25 | 1.000 | -3.84 | 1.0000 | -4.30 | 1.0000 | -4.39 | 1.0000 | -4.67 |
| 30 | 0.8276 | -3.73 | 0.80892 | -4.18 | 0.80567 | -4.26 | 0.7943 | -4.54 |
| 35 | 0.6885 | -3.63 | 0.65804 | -4.07 | 0.65314 | -4.14 | 0.6349 | -4.42 |
| 40 | 0.5758 | -3.53 | 0.53820 | -3.97 | 0.53266 | -4.02 | 0.51059 | -4.30 |
| 45 | 0.4840 | -3.43 | 0.44249 | -3.87 | 0.43689 | -3.91 | 0.41302 | -4.18 |
| 50 | 0.4087 | -3.33 | 0.36563 | -3.77 | 0.36031 | -3.81 | 0.33598 | -4.07 |
| 55 | 0.3467 | -3.24 | 0.30357 | -3.67 | 0.29857 | -3.71 | 0.27479 | -3.97 |
| 60 | 0.2954 | -3.16 | 0.25323 | -3.58 | 0.24869 | -3.61 | 0.22593 | -3.87 |
| 65 | 0.2528 | -3.07 | 0.21219 | -3.49 | 0.20816 | -3.51 | 0.18669 | -3.77 |
| 70 | 0.2172 | -2.99 | 0.17858 | -3.41 | 0.17508 | -3.42 | 0.15502 | -3.67 |
Please visit northstarsensors.com/temperature-curves
for additional tables