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Specifications
Mfr. Part #:
NTC1.5D-9MMF03E
Package:
Through Hole,P=5mm
Key Attributes
Model Number:
NTC1.5D-9MMF03E
Product Description
Product Overview
This document details the NTC 1.5D-9/P=5 straight-lead thermistor, a negative temperature coefficient (NTC) thermistor designed for various applications. It features a modified phenolic resin encapsulation, CP wire leads, and a black coating. Key technical parameters include a zero-power resistance of 1.5 20% at 25 and a B value of 2600K.
Product Attributes
- Brand: (Chengxi)
- Origin: Dongguan Chengxi Electronics Co., Ltd.
- Material (Wrapper): Modified phenolic resin
- Material (Down-lead): CP Wire
- Color (Coating): Black
- Customer Part Number: CX-NTC-251211-01
Technical Specifications
| Model | Size (mm) | Zero Power Resistance at 25 () | B Value (K) | Thermal Time Constant (S) | Thermal Dissipation Constant (mW/) | Operating Temperature () | Max Steady State Current (A) |
|---|---|---|---|---|---|---|---|
| 1.5D-9 | D Max: 10.0, H Max: 13.5, F1+0.5: 5.0, T Max: 5.5, L Min: 18.0, d+0.1: 0.6 | 1.5 20% | 2600 | 35 | 11 | -40 to +175 | 4.5 |
Detailed Technical Parameters
| Parameter | Description | Test Method | Test Equipment | Requirements |
|---|---|---|---|---|
| Rated Zero Power Resistance | Zero power resistance measured at the reference temperature of 25, also known as the nominal resistance of the NTC thermistor. Zero power resistance RT is measured at a specified temperature using a measurement power that is negligible relative to the total measurement error. | Resistance measurement at 25 | HG-2515 Thermistor Tester | Resistance measurement within allowable deviation: M: 20%, L: 15%, K: 10%, J: 5% |
| B Value (K) | The thermal sensitivity index of an NTC thermistor, defined as the ratio of the difference in natural logarithms of zero power resistance at two temperatures to the difference in the reciprocals of those temperatures. B=[ln(RT1)- ln(RT2)]/(1/T1-1/T2) where T1 = 273.15+25() and T2 = 273.15+50 / 85(). | Constant temperature oil bath | HG-2515 Thermistor Tester | Meets datasheet requirements |
| Dissipation Coefficient () | The ratio of the change in power dissipated by the thermistor body to the corresponding change in temperature of the thermistor body at a specified ambient temperature: =P/T. Within the operating temperature range, varies with ambient temperature. | Dissipation coefficient tester | See Main Technical Parameters Table | See Main Technical Parameters Table |
| Thermal Time Constant () | The time required for the temperature of the thermistor body to change to 63.2% of the difference between the initial and final temperatures under zero power conditions. is proportional to the thermal capacity C and inversely proportional to the dissipation coefficient : =C/. | Thermal time constant tester | See Main Technical Parameters Table | See Main Technical Parameters Table |
| Residual Resistance | The resistance value when the maximum DC current is passed through the thermistor and thermal equilibrium is reached under standard test conditions. | Steady state current test machine | See Main Technical Parameters Table | Zero power resistance change rate 25% |
| Maximum Allowable Capacity | The maximum allowable capacitance value connected to a thermistor under load conditions. | Maximum allowable capacity test machine | See Main Technical Parameters Table | Zero power resistance change rate 25% |
| Maximum Steady State Current | The maximum continuous DC current that can be applied to the thermistor at an ambient temperature of 25. | Maximum steady state current test machine | See Main Technical Parameters Table | No visible damage to appearance, resistance change rate 25% |
Mechanical and Process Performance
| Item | Test Method | Test Equipment | Requirements |
|---|---|---|---|
| Solderability | Immerse thermistor leads in 2605 tin liquid for 2 0.5s, then remove and observe appearance. | Tin furnace | Uniform tinning on leads, over 90% immersion area, defects not concentrated in one spot. |
| Resistance to Soldering Heat | Immerse thermistor leads in 26010 tin liquid to a depth of 2.0mm+0/-0.5mm from the base plane, with a 1.50.2mm heat insulation layer, for 50.5s. Recovery time: over 1 hour, under 2 hours. | Tin furnace | Zero power resistance change rate 25% |
| Lead Strength | Apply the following load to one of the thermistor leads for 10 seconds: Lead diameter (mm): 0.6, 0.8, 1.0; Load (N): 10, 10, 20. Bend the other lead 90 degrees, restore, then bend 90 degrees in the opposite direction and restore. | HG-2515 Thermistor Tester | No visible damage to appearance, zero power resistance change rate 25% |
| Vibration | Fix the thermistor on a vibration table. Use frequencies from 10Hz to 500Hz with an amplitude of 0.75mm for 6 hours, then observe appearance. | Vibration table | No visible damage to appearance, clear marking, zero power resistance change rate 25% |
| Impact | Fix the thermistor on an impact table and apply an acceleration of 390m/s for 400010 impacts, then observe appearance. | Impact table | No visible damage to appearance, clear marking, zero power resistance change rate 25% |
| Rapid Temperature Change | 1. TA = lower category temperature for 30min. 2. Transition time: 5 min. 3. TB = upper category temperature for 30min. 4. Place at room temperature for 5 min. One cycle. Perform 5 cycles. Recover for over 4 hours. | High and low temperature test chamber, HG-2515 Thermistor Tester | No visible mechanical damage to appearance, clear marking, zero power resistance change rate 25% |
| Climate Sequence | 1. Dry Heat: IEC68-2-2 Test Ba, 16 hours. 2. Cyclic Damp Heat: IEC68-2-30 Test Db, 55, one cycle 24 hours. 3. Cold: -403, 2 hours. 4. Low Pressure: IEC68-2-13 Test M, test temperature between 15 and 35, duration 1h. 5. Alternating Damp Heat: IEC68230 Test Db, other cycles. Recover at room temperature for over 1 hour, measure zero power resistance within 24 hours. | High and low temperature test chamber, HG-2515 Thermistor Tester | No visible mechanical damage to appearance, clear marking, zero power resistance change rate 25% |
| Steady State Damp Heat | Place the thermistor in a test chamber at 402 and 90-95% RH for 21 days. Recover for over 4 hours and measure zero power resistance. Compare resistance change before and after the test. | Test chamber / HG-2515 Thermistor Tester | No visible mechanical damage to appearance, clear marking, zero power resistance change rate 25% |
| Upper Category Temperature Endurance | Measure and record initial zero power resistance. Place the thermistor in a test chamber at the upper category temperature for 1000h. Remove from the test chamber, recover for over 4h, and measure zero power resistance. | Constant temperature test chamber, HG-2515 Thermistor Tester | No visible mechanical damage to appearance, clear marking, zero power resistance change rate 25% |
2512241555_DGCX-NTC1-5D-9MMF03E_C53224141.pdf
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