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Specifications
Resistance @ 25℃:
100kΩ
Power(Watts):
50mW
Operating Temperature:
-55℃~+195℃
Tolerance:
±5%
B Constant (25℃/100℃):
-
Steady State Current (Max):
-
Diameter (φD):
1.8mm
Thermal Time Constant:
20s
B Constant (25℃/85℃):
4092K
B Constant (25℃/75℃):
-
B Constant (25℃/50℃):
3950K
B Constant Tolerance:
±1%
Mfr. Part #:
MF58 104J3950
Package:
Through Hole,D1.8xL4mm
Key Attributes
Model Number:
MF58 104J3950
Product Description
Product Overview
The MF58 series glass-encapsulated temperature-measuring NTC thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for temperature measurement and control applications. These thermistors offer reliable performance with precise resistance-temperature characteristics, making them suitable for various industrial and electronic systems requiring accurate temperature sensing.
Product Attributes
- Brand: Shiheng ()
- Origin: China ()
- Product Line: MF58 Series
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, ROHS, CQC, Jiangsu Province High-tech Product, UL 1434 (File # E240991)
- Material: Glass (housing), Tinned steel wire (leads)
Technical Specifications
| Specification | Value | Unit | Notes |
|---|---|---|---|
| Part Number | MF58-104J3950 | UL: E240991 | |
| Zero-power resistance at 25 (R25) | 100K | Tolerance: 5% | |
| B value (B25/50) | 3950 | K | Tolerance: 1% |
| Dissipation Factor () | 2 | mW/ | In still air |
| Time Constant () | 20 | sec | In still air |
| Withstand Voltage | 1500V/AC | 1min, no breakdown or flashover | |
| Insulation Resistance | 500 | M | 500V/DC, 1min |
| Operating Temperature Range | -55 to 195 | ||
| Maximum Rated Power (Pmax) | 50 | mW | |
| Lead Strength | 101 N | 101 sec, no visible damage; R/R 2% | |
| Solderability | 95% | Tinning area at 2455 for 2-3 sec | |
| Resistance to Soldering Heat | R/R 2% | At 2605, 51 sec immersion | |
| Steady State Humidity Heat | R/R 2% | 402, 932% RH for 500 hours | |
| Thermal Shock | R/R 2% | -55 to 195, 5 cycles | |
| High Temperature Storage | R/R 2% | 1955 for 1000 hours | |
| Low Temperature Storage | R/R 2% | -555 for 1000 hours | |
| Housing Material | Glass | ||
| Lead Wire Material | Tinned steel wire | 0.50.05 mm | |
| Storage Temperature | -10 to 40 | ||
| Storage Humidity | 75% RH |
Product Model Explanation: MF58-104J3950
- MF58: Glass-encapsulated temperature-measuring NTC thermistor
- 104: Zero-power resistance at 25 is 100K
- J: Resistance tolerance code (F-1%, G-2%, H-3%, J-10%)
- 3950: B25/50 value is 3950K
Usage Precautions:
- Application: Temperature measurement and control.
- Avoid current-induced self-heating that causes measurement errors.
- Soldering: Keep at least 2mm from the glass bead, temperature below 360, time < 3 seconds.
- Lead bending: Bend point should be more than 2mm from the glass bead to prevent damage.
- Storage: Avoid corrosive gases and direct sunlight. Re-seal packaging after opening.
1810170540_Nanjing-Shiheng-Elec-MF58-104J3950_C84686.pdf
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