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Specifications
Resistance @ 25℃:
100kΩ
Power(Watts):
50mW
Operating Temperature:
-55℃~+195℃
Tolerance:
±3%
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:
±2%
Mfr. Part #:
MF58 104H3950
Package:
Through Hole,D1.8xL4mm
Key Attributes
Model Number:
MF58 104H3950
Product Description
NTC Thermistors
Product Overview
The MF58 series glass-encapsulated NTC thermistors are designed for temperature measurement and control applications. These components offer reliable performance with a wide operating temperature range and precise resistance-temperature characteristics, making them suitable for various industrial and electronic applications.
Product Attributes
- Brand: Shiheng Electronics ()
- Origin: China
- Product Type: Glass-encapsulated temperature measuring NTC thermistor
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, ROHS, CQC, UL 1434 (File # E240991)
Technical Specifications
| Item | Symbol | Test Condition | Unit | Performance Requirement |
|---|---|---|---|---|
| Zero-power resistance at 25 | R25 | Ta=250.05, Test Power 0.1mW | K | 100K3% |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb), Tb=500.05 | K | 39502% |
| Dissipation Factor | In still air | mW/ | 2 | |
| Time Constant | In still air | sec | 20 | |
| Withstand Voltage | / | 1500V/AC, 1min | / | No breakdown or arcing |
| Insulation Resistance | / | 500V/DC, 1min | M | 500 |
| Operating Temperature Range | / | / | -55~195 | |
| Maximum Rated Power | Pmax | / | mW | 50 |
| Lead Strength | / | Fixed resistor end, Tension: 101 N, Time: 101 sec | / | No visible damage, R25 R/R2% |
| Solderability | / | Temperature 2455, Time 2-3 sec | / | Tinning area 95% |
| Resistance to Soldering Heat | / | Solder pot temperature: 2605, Immersion depth 6mm from resistor body, Time 51 sec | / | R25 R/R2% |
| Steady State Humidity Heat | / | Temperature: 402, Humidity: 932%, Time: 500 hours | / | R25 R/R2% |
| Rapid Temperature Change | / | -55 30min 25 5min 195 30min 25 5min, Repeated 5 cycles | / | R25 R/R2% |
| High Temperature Storage | / | Temperature: 1955, Time: 1000 hours | / | R25 R/R2% |
| Low Temperature Storage | / | Temperature: -555, Time: 1000 hours | / | R25 R/R2% |
Product Model Description
MF58-104H3950
- MF58: Glass-encapsulated temperature measuring NTC thermistor
- 104: Zero-power resistance at 25 is 100K
- H: Resistance tolerance code (H = 3%)
- 3950: B25/50 value is 3950K
Usage Precautions
- Purpose: Temperature measurement and control.
- Avoid current flowing through the thermistor chip causing self-heating and measurement errors.
- When soldering with a soldering iron, the welding point should be at least 2mm away from the glass bead. Soldering temperature should be below 360, and soldering time should be less than 3 seconds.
- If the lead wire is bent, the bending point should be more than 2mm away from the glass bead to prevent damage.
- Storage Temperature: -10 to 40.
- Storage Humidity: 75% RH.
- Avoid storage in environments with corrosive gases or direct sunlight.
- Reseal and store after opening the package.
External Dimensions
(Unit: mm)
| No. | Name | Material/Specification | Quantity | Remark |
|---|---|---|---|---|
| 1 | Component | NTC Thermistor | 1 | / |
| 2 | Housing | Glass | 1 | / |
| 3 | Lead Wire | 0.50.05 Tinned steel wire | 2 | / |
1810161311_Nanjing-Shiheng-Elec-MF58-104H3950_C123400.pdf
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