Thermometrics NTC Thermistors
EPOXY Type NKA | FOR automotive applications
Thermometrics Type NKA NTC Chip Thermistors are optimized for automotive applications and high volume assembly with Sn-coated Alloy 52 leads and alternative epoxy, HTF1 silicone, and CR1 FKM coatings.
- Automotive - EV, EGR, TMAP, OAT, HVAC
- White Goods
- Tested to AEC Q200
- Designed for accurate temperature measurement, control and compensation
- Tight tolerances on resistance and B value
- Operation up to 170°C with excellent stability
- Small body diameter
- Fast response
- Coating option up to 29mm
- High thermal shock resistance
- Automotive/Aerospace fluids resistance
- Water immersion (CR1)
- Flexible – HTF1/CR1 coated leads can be formed
- Insulation Resistance: 500Vd.c. (1kV - CR1)
- Available on bandolier to IEC 286-2
- Compliance: RoHS 2011/65/EU, REACH
Minimum Operating Temperature | -40°C |
Maximum Operating Temperature | Epoxy: 155°C, HTF1: 170°C, CR1: 190°C |
Thermal Time Constant | 10 - 15s (cooling) 2.4s (ambient change) |
Dissipation Factor | 2.2mW/K |
Mass | 0.18g |
Packing/MOQ | 1000/box (loose) 2000 min/reel |
Options
- Other resistance values within the ranges shown
- Alternative reference temperatures: 0°C to 100°C
- Bulk packed or bandoliered up to H=45mm
- Lead materials: Steel/Alloy52/Cu
- Coatings: Epoxy (standard), HTF1, CR1 (Materials 1, 4A only)
- Color-coded tip
- Contact Amphenol for specific application requirements.
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Standard Range Resistance Values
(Other values available upon request)
R25Ω | Material System | B 25/85°C K | Max Operating Temp1 °C (°F) | Part Code R25°C ±1% |
Part Code R25°C ±2% |
Part Code R25°C ±3% |
Part Code R25°C ±5% |
Part Code R25°C ±10% |
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500 |
2 |
3540 ± 1% |
155 (311) |
NKA501C2*1 |
NKA501C2*2 |
NKA501C2*3 |
NKA501C2*5 |
NKA501C*R10 |
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500 |
2A |
3627 ± 1% |
155 (311) |
NKA501C2A*1 |
NKA501C2A*2 |
NKA501C2A*3 |
NKA501C2A*5 |
NKA501C2A*10 |
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500 |
7 |
3977± 1% |
155 (311) |
NKA501C7*1 |
NKA501C7*2 |
NKA501C7*3 |
NKA501C7*5 |
NKA501C7*10 |
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1000 |
2 |
3540 ± 1% |
155 (311) |
NKA102C2*1 |
NKA102C2*2 |
NKA102C2*3 |
NKA102C2*5 |
NKA102C2*10 |
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1000 |
2A |
3627 ± 1% |
155 (311) |
NKA102C2A*1 |
NKA102C2A*2 |
NKA102C2A*3 |
NKA102C2A*5 |
NKA102C2A*10 |
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1000 |
7 |
3977± 1% |
155 (311) |
NKA102C7*1 |
NKA102C7*2 |
NKA102C7*3 |
NKA102C7*5 |
NKA102C7*10 |
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2000 |
2 |
3540 ± 1% |
155 (311) |
NKA202C2*1 |
NKA202C2*2 |
NKA202C2*3 |
NKA202C2*5 |
NKA202C2*10 |
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2000 |
2A |
3627 ± 1% |
155 (311) |
NKA202C2A*1 |
NKA202C2A*2 |
NKA202C2A*3 |
NKA202C2A*5 |
NKA202C2A*10 |
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2000 |
7 |
3977± 1% |
155 (311) |
NKA202C7*1 |
NKA202C7*2 |
NKA202C7*3 |
NKA202C7*4 |
NKA202C7*10 |
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2700 |
1 |
3977 ± 0.75% |
155 (311) |
NKA272C1*1 |
NKA272C1*2 |
NKA272C1*3 |
NKA272C1*5 |
NKA272C1*10 |
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5000 |
4A |
3436 ± 1% |
155 (311) |
NKA502C4A*1 |
NKA502C4A*2 |
NKA502C4A*3 |
NKA502C4A*5 |
NKA502C4A*10 |
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5000 |
1 |
3977 ± 0.75% |
155 (311) |
NKA502C1*1 |
NKA502C1*2 |
NKA502C1*3 |
NKA502C1*5 |
NKA502C1*10 |
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10000 |
4A |
3436 ± 1% |
155 (311) |
NKA103C4A*1 |
NKA103C4A*2 |
NKA103C4A*3 |
NKA103C4A*5 |
NKA103C4A*10 |
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10000 |
5 |
3740 ± 1% |
155 (311) |
NKA103C5*1 |
NKA103C5*2 |
NKA103C5*3 |
NKA103C5*5 |
NKA103C5*10 |
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10000 |
1 |
3977 ± 0.75% |
155 (311) |
NKA103C1*1 |
NKA103C1*2 |
NKA103C1*3 |
NKA103C1*5 |
NKA103C1*10 |
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12000 |
5 |
3740 ± 1% |
155 (311) |
NKA123C5*1 |
NKA123C5*2 |
NKA123C5*3 |
NKA123C5*5 |
NKA123C5*10 |
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30000 |
8 |
3977± 1% |
155 (311) |
NKA303C8*1 |
NKA303C8*2 |
NKA303C8*3 |
NKA303C8*5 |
NKA303C8*10 |
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50000 |
8 |
3977± 1% |
155 (311) |
NKA503C8*1 |
NKA503C8*2 |
NKA503C8*3 |
NKA503C8*5 |
NKA503C8*10 |
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1. Epoxy 155°C, HTF1 170°C, CR1 170°C (Material 1 190°C) |
Replace * in the table codes shown above as follows: | |
Loose-packed | R |
Bandoliered | B |
Coating Suffix: | |
Epoxy | No suffix |
CR1 (Ceramic Material 1, 4A Only) | C |
HTF1 | H |
Example Part Code: | |
NKA103C1R3C | (loose pack, ±3% tolerance, CR1 coating) |