| Nominal Resistance (251) | 820 | | |
| Max Steady State Current (25) | 5A | | |
| Thermal Time Constant (approx.) | 75S | | |
| Thermal Dissipation Constant (approx.) | 21mW | | |
| Operating Range | -40~+200 | | |
| Approximate Resistance Value at Maximum Current | 0.178 | | |
| Max Shock Capacity | 680 uf/240V | | |
| Zero Power Resistance | | Measured when resistance change due to self-heating is negligible at 25. | See Electrical Parameters |
| B-Value | | Calculated using zero power resistance at 25 and 50. | See Electrical Parameters |
| Thermal Dissipation Constant | | Ratio of power dissipation change to corresponding temperature change at specified temperature (mW/). | See Electrical Parameters |
| Thermal Time Constant | | Time for thermistor temperature to reach 63.2% of initial/final difference under zero power. | See Electrical Parameters |
| Lead Terminal Tensile Strength | No visible damage, Resistance change: 20% | 1.0kg load applied to each lead for 10 sec. | |
| Lead Terminal Bend Strength | No visible damage, Resistance change: 20% | Fixed body, 0.5kg weight on one terminal, bend 90, reverse, bend 90 in opposite direction. | |
| Vibration | No substantial damage | Frequency: 10~50Hz, Amplitude: 1.55mm, Direction/Time: X, Y, Z axes each 2 hours. | |
| Solderability | Coating area: 98% | Solder bath Temperature: 2355, Time: 3S | |
| Resistance to Soldering Heat | Resistance change: 10% | Dip leads in molten solder (35010) to 4.00.8mm depth for 3.00.5 sec, rest 24 hrs. | |
| Dry Heat (High Temperature Storage) | Resistance change: 10% | 1252 for 1000+48 hrs, rest 1-2 hrs. | |
| Cold (Low Temperature Storage) | Resistance change: 10% | -403 for 1000+48 hrs, rest 1-2 hrs. | |
| Humidity Test | Resistance change: 10% | 402, 95% RH, 1000 HR | |
| Temperature Cycle Test | Resistance change: 20% | -40/30 25/5 +125/30 25/5 | |
| Operating Temperature | -40 to +200 | Allowable temperature range for long-term continuous operation. | |
| Storage Conditions | -10~40, RH75% | | |
