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Specifications
Resistance @ 25℃:
2.5Ω
Pitch:
5mm
Operating Temperature:
-40℃~+175℃
Tolerance:
±20%
Mfr. Part #:
NTC2.5D-9SMFSOE
Package:
Through Hole,P=5mm
Key Attributes
Model Number:
NTC2.5D-9SMFSOE
Product Description
Product Overview
The NTC 2.5D-9/P=5 is a power NTC thermistor from Dongguan Chengxi Electronics Co., Ltd. It features a small size with high power capability for effective surge current suppression. Key advantages include fast response, high reliability, long life, a large material constant (B value), and low residual resistance. This series offers a wide operating range and a complete product line, making it suitable for various electronic applications.
Product Attributes
- Brand: Dongguan Chengxi Electronics Co., Ltd.
- Product Name: NTC Power Thermistor
- Product Model: NTC 2.5D-9/P=5
- Customer P/N: NTC2.5D-9SMFSOE
- Origin: China (implied by company location)
Technical Specifications
| Parameter | Specification | Test Conditions/Methods |
| 6. Main Technical Parameters | ||
| Rated Zero-Power Resistance (R25) | 2.5 Ω ± 20% | Details in Product Characteristics and Test |
| Material Constant (B25/50) | 2600 ± 10% | B=T1T2/( T2- T1) × Ln (R1/R2) R1 , R2 is zero-power resistance at T1 , T2 T1 = 298.15 K(25°C) T2 = 323.15 K(50°C) |
| Max. Steady State Current | 4 A | Ambient temp. Range: 25°C±2°C, Testing Current: 4.0A |
| Thermal Dissipation Constant | 11 mW/°C | Calculated by the ratio of a change in power dissipation(ΔP) to a change in temperature(ΔT) at a specified ambient temperature. |
| Thermal Time Constant | 35 s | Time within which the temperature change of NTC thermistor is reached at 63.2% of the ambient temperature change under zero power condition. |
| Operating Temperature Range | -40 ~ 175 °C | |
| Structure and Dimensions | ||
| D (max) | 11.0mm | |
| T (max) | 5.5mm | |
| F (±1.0) | 5.0mm | |
| L (±2.0) | 20mm | |
| d (±0.05) | 0.6mm | |
| 8. Product Characteristics | ||
| Mechanical Characteristics | ||
| Solder-ability | Terminals shall be uniformly tinned, and its area≥95% | Dipping terminals to 15mm depth in a 240-245°C tin bath for 2-3s. |
| Resistance To Soldering Heat | No visible mechanical damage. ΔR/RN ≤20% | Dipping terminals to 15mm depth in a 265±5°C tin bath for 10±1s. Recovering 4-5h at 25±2°C. |
| Strength of lead terminal | No break out. ΔR/RN ≤20% | Pulling 10N for 10s; Bending 90° at 5N for 10s; Twisting 180° at 5N for 10s. Recovering 4-5h at 25±2°C. |
| Electrical Characteristics | ||
| Rated Zero-Power Resistance RN | 2.5 Ω ± 20% | Ambient temp. 25°C±1°C, Testing voltage: 1.5VDC. Measured after 1-2 hours at TA. |
| Thermal Dissipation Constant δ | 11 mW/°C | |
| Thermal Time Constant τ | 35 s | |
| Material Constant B | 2600 ± 10% | |
| Max. Steady State Current | 4 A | No visible mechanical damage. ΔRN / RN ≤20%. Ambient temp: 25°C±2°C, Testing Current: 4.0A |
| Reliability Test | ||
| Temp. Cycling Testing | No visible mechanical damage. ΔRN / RN ≤20% | Ta:-40±3°C/ 30min→25±2°C/ 5min→Tb:200±3°C/ 30min →25±2°C/ 5min. Cycles: 5 times. Recovering 4-5h at 25±2°C. |
| Electrical Cycling Testing | No visible mechanical damage. ΔRN / RN ≤20% | Ambient temp. 25°C±2°C. Cycles: 1,000 times. On/Off: 1 min/ 5 min. Test Current 4.0A. Recovering 4-5h at 25±2°C. |
| Load Life (Endurance) Testing | No visible mechanical damage. ΔRN / RN ≤20% | Ambient temp. 25°C±2°C. 3.0A/ 1,000±24h. Recovering 4-5h at 25±2°C. |
| Humidity Testing | No visible mechanical damage. ΔRN / RN ≤20% | Ambient temp. 40°C±2°C, R.H.: 93±3%. Energized time: 1000±24 h. Recovering 4-5h at 25±2°C. |
2505291610_DGCX-NTC2-5D-9SMFSOE_C49003043.pdf
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