Product Overview
The MF72 series of power-type NTC thermistors from Nanjing Shiheng Electronics Technology Co., Ltd. are designed to suppress inrush current. These thermistors offer reliable performance with specific electrical and reliability characteristics, making them suitable for various industrial applications. The product is manufactured by Nanjing Shiheng Electronics Technology Co., Ltd. and is certified under ISO9001, ISO14001, CQC, UL, and TUV standards, along with RoHS environmental compliance.
Product Attributes
- Brand: Shiheng ()
- Product Type: Power Type NTC Thermistor
- Origin: Nanjing, China
- Encapsulation Material: Black Silicone Resin
- Lead Wire Material: Tinned Copper Wire
- Certifications: ISO9001:2008, ISO14001:2004, RoHS, CQC Safety Certification, UL Certification (E241319), Jiangsu High-tech Product Certification, TUV Certification (R50245892)
Technical Specifications
| Item | Symbol | Test Conditions | Unit | Performance Requirement |
|---|---|---|---|---|
| 1. Electrical Performance | ||||
| Zero-power resistance at 25 | R25 | Ta=250.5, Test Power 0.1mW, Tested in Air | 30 20% | |
| B Value | B25/50 | B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) | K | 3200 10% |
| Max. Steady Current | I max | - | A | 3.5 |
| Max. Allowable Capacitance | CT | 240Vac | F | 330 |
| Dissipation Factor | - | mW/ | 21 | |
| Thermal Time Constant | - | sec | 86 | |
| Withstand Voltage | - | 500V/AC, 1min | - | No breakdown or arcing |
| Insulation Resistance | - | 500V/DC, 1min | M | 500 |
| Operating Temperature Range | - | - | -40 ~ 200 | |
| Max. Rated Power | Pmax | - | W | 5 |
| Resistance-Temperature Curve | - | - | - | See Figure 1 |
| Voltage-Current Curve | - | - | - | See Figure 2 |
| 2. Reliability | ||||
| Lead Strength | - | Tensile Force: 10s1s (0.5| - | No visible damage, R/R25% | |
| Solderability | - | Temperature 2455, Time 2-3s | - | 95% tinned area |
| Resistance to Soldering Heat | - | Solder pot temp: 2605, Immersion depth 6mm from body, Time 101s | - | R/R25% |
| Stable Humidity Heat | - | Temp: 402, Humidity: 932%, Time: 1000 hours | - | R/R25% |
| Rapid Temperature Change | - | -40(30min)25(5min)200(30min)25(5min), 5 cycles | - | R/R25% |
| High Temperature Storage | - | Temp: 2005, Time: 1000 hours | - | R/R25% |
| Max. Steady Current Durability | - | Continuous application of max. steady current at room temp., 100024h | - | R/R25% |
| Max. Capacitance Endurance | - | Apply max. allowable capacitance, cycle: 50ms on, 5 times thermal time constant off, 1000 cycles | - | R/R25% |
| 3. Usage Precautions | ||||
| Purpose: Inrush current suppression. Soldering: distance from coating 2mm, temp <360, time <3s. Storage temp: -1040; Storage humidity: 75% RH. Avoid corrosive gases and direct sunlight. Reseal after opening package. Shelf life: 1 year. | ||||
| 4. Derating Curve | ||||
| Refer to diagram (not provided in detail). | ||||
| 5. Outline Dimensions (Unit: mm) | ||||
| D | L1 | L2 | F1 | F2 |
| Max17.5, Min17 | 52 | 7.51 | 51.5 | Max6.0 |
| d | - | - | - | 0.80.05 |
| 6. Product Model Description | ||||
| MF72 30 D 15 : Shiheng Brand : MF72 - Power Type NTC Thermistor : 30 - Zero-power resistance at 25 is 30 : 15 - Body diameter D15 | ||||
| 7. Certifications | ||||
| 7.1 Quality Management System: ISO9001:2008 (01112Q20216R4M) | ||||
| 7.2 Environmental Management System: ISO14001:2004 (01113E20060R2M) | ||||
| 7.3 Environmental Test Report: RoHS | ||||
| 7.4 CQC Safety Certification: (CQC04001010556) | ||||
| 7.5 UL Certification: (E241319) | ||||
| 7.6 Jiangsu Province High-tech Product Certification: (070115G0254N) | ||||
| 7.7 TUV Certification: (R50245892) | ||||
Contact Information:
Nanjing Shiheng Electronics Technology Co., Ltd.
Address: No. 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing City, 211121
TEL: 025-52121868
FAX: 025-52122373
Http: //www.shiheng.com.cn
E-MAIL: sales@shiheng.com.cn
1810170223_Nanjing-Shiheng-Elec-MF72-30D15_C157727.pdf
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