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Specifications
Resistance @ 25℃:
8Ω
Power(Watts):
1W
Pitch:
5mm
Operating Temperature:
-40℃~+130℃
Tolerance:
±20%
B Constant (25℃/100℃):
-
Steady State Current (Max):
1A
Thermal Time Constant:
28s
B Constant (25℃/85℃):
-
B Constant (25℃/75℃):
-
B Constant (25℃/50℃):
2600K
B Constant Tolerance:
±10%
Mfr. Part #:
MF72 8D7
Package:
Through Hole,P=5mm
Key Attributes
Model Number:
MF72 8D7
Product Description
Product Overview
The MF72 series power type NTC thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed for surge current suppression. These components offer reliable performance with a wide operating temperature range and are manufactured under stringent quality management systems.
Product Attributes
- Brand: Shiheng
- Product Type: Power Type NTC Thermistor
- Origin: Nanjing, China
- Encapsulation Material: Black Phenolic Resin
- Lead Material: Tinned Copper Wire
- Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, Jiangsu High-Tech Product, TUV
Technical Specifications
| Item | Symbol | Test Condition | Unit | Performance Requirement |
|---|---|---|---|---|
| Electrical Characteristics | ||||
| Zero-power resistance at 25 | R25 | Ta=250.5, Test Power 0.1mW, Tested in air | 8 20% | |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 2600 10% |
| Max. Steady Current | I max | / | A | 1 |
| Max. Allowable Capacitance | CT | 240Vac | F | 100 |
| Dissipation Factor | / | mW/ | 9 | |
| Thermal Time Constant | / | sec | 28 | |
| Withstand Voltage | / | 500V/AC, 1min | / | No breakdown or flashover |
| Insulation Resistance | / | 500V/DC, 1min | M | 500 |
| Operating Temperature Range | / | / | -40 ~ 130 | |
| Max. Rated Power | Pmax | / | W | 1 |
| Resistance-Temperature Curve | / | / | / | See Figure 1 |
| Volt-Ampere Curve | / | / | / | See Figure 2 |
| Reliability | ||||
| Lead Strength | / | Tensile Force: 10s1s | / | 0.5 |
| Solderability | / | Temperature 2455, Time 2-3s | / | 95% tinning area |
| Resistance to Soldering Heat | / | Solder pot temp: 2605, Immersion depth 6mm from resistor body, Time 101s | / | R/R25% |
| Steady Damp Heat | / | Temperature: 402, Humidity: 932%, Time: 500 hours | / | R/R25% |
| Temperature Rapid Change | / | -40 30min25 5min130 30min25 5min, 5 cycles | / | R/R25% |
| High Temperature Storage | / | Temperature: 1305, Time: 1000 hours | / | R/R25% |
| Max. Steady Current Endurance | / | Continuously apply max steady current at room temp for 50024h | / | R/R25% |
| Max. Capacitance Endurance | / | Apply max allowable capacitance, intermittently close 50ms, open 5 times thermal time constant for one cycle, apply 1000 cycles | / | R/R25% |
| Product Model Description | ||||
| Model | MF72-8D7 | MF72: Power Type NTC Thermistor; 8: Zero-power resistance at 25 is 8; D7: Body diameter is 7mm | / | / |
| Outline Dimensions (Unit: mm) | ||||
| D | L1 | L2 | F1 | F2 |
| Max 9.0 | Min 17 | 52 | 51 | 1 |
| T | d | / | / | / |
| Max 5 | 0.60.05 | / | / | / |
Usage Precautions
- Purpose: Surge current suppression.
- Soldering: For soldering with an iron, the distance from the solder joint to the coating layer should be at least 2mm. Soldering temperature should be below 360, and soldering time less than 3 seconds.
- Storage Temperature: -10 ~ 40.
- Storage Humidity: 75% RH.
- Storage Environment: Avoid storage in environments with corrosive gases and direct light.
- Packaging: Reseal after opening packaging.
- Shelf Life: 1 year.
Contact Information:
Nanjing Shiheng Electronics Technology Co., Ltd.
Address: No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing, 211121, China
Tel: 025-52121868
Fax: 025-52122373
Email: sales@shiheng.com.cn
Website: Http://www.shiheng.com.cn
1810161311_Nanjing-Shiheng-Elec-MF72-8D7_C122763.pdf
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