Power NTC Thermistor Nanjing Shiheng Elec MF72 8D9-3.5 Offering Fast Heat Dissipation and Insulation Properties

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Product Description

Product Overview

The MF72 Series Power NTC Thermistor from Nanjing Shiheng Electronics Co., Ltd. is designed for current limiting applications. It features a silicone resin encapsulation for high temperature resistance (up to 300C), fast heat dissipation, and good insulation. This thermistor is suitable for suppressing inrush currents and is manufactured to meet stringent quality and environmental standards, including ISO9001, IATF16949, ISO14001, RoHS 2.0, CQC, TUV, and UL certifications.

Product Attributes

  • Brand: Shiheng
  • Product Type: Power NTC Thermistor
  • Series: MF72
  • Encapsulation Material: Green Silicone Resin
  • Lead Wire Material: Tinned copper clad steel wire
  • Certifications: ISO9001:2015, IATF16949:2016, ISO14001:2015, RoHS 2.0, CQC (CQC04001010556), TUV (R50245892), UL (E241319), Jiangsu Province High-tech Product

Technical Specifications

Item Symbol Test Conditions Unit Requirements
Zero Power Resistance at 25 R25 Ta=250.5 (Test Power 0.1mW, in air) 820%
B-value (B25/50) B Ta=250.01, Tb=500.01 K 280010%
Max steady current I max - A 2
Max allowable capacity value CT 240Vac F 150
Thermal dissipation Coefficient In still air mW/ 11
Thermal time constant In still air sec 32
Withstand voltage - 500V/AC, 1min - No breakthrough and flash over
Insulation resistance - 500V/DC, 1min M 500
Operating temperature range - - -40 ~ 170
Maximum rated power Pmax - W 2
Product Model: MF72 8D9
Dimensions (mm): DMax L10.5 L2 F0.5
10.0 3.5 52 7.5
T max d0.05
5.5 0.8
Technical Requirements:
  • Zero Power Resistance: R25: 820%
  • B-value: B25/50: 2800K10%
  • Lead Wire: Tinned copper clad steel wire
  • Encapsulation: Green silicone resin
  • Environmental Compliance: RoHS
Reliability - Terminal Strength:
  • Lead diameter (mm): 0.5<d0.8, Pull strength (N): 10
  • Lead diameter (mm): 0.8<d1.25, Pull strength (N): 20
  • Time: 101 sec, No obvious damage, |R25/25R|25%
Reliability - Solderability:
  • Temperature: 2455, Time: 2-3 sec
  • Coverage area 95%
Reliability - Withstand welding temp:
  • Tin pot temperature: 2605, insert depth from body 6mm, time 10 1 seconds
  • |R25/25R|25%
Reliability - Steady humidity and heat:
  • Temperature: 402, Humidity: 932%, Time: 1000 hrs
  • |R25/25R|25%
Reliability - Rapid changes in temperature:
  • -40 30min25 5min170 30min25 5min, 5 cycles
  • |R25/25R|25%
Reliability - High temperature storage:
  • Temperature: 1705, Time: 1000 hrs
  • |R25/25R|25%
Reliability - Max steady current durability:
  • Ambient temperature, sustained max steady current: 100024h
  • |R25/25R|25%
Reliability - Max capacity valume:
  • 1000 cycles (intermittent switch 50ms, cut 5 times thermal time constant)
  • |R25/25R|25%
Installation & Use Precautions:
  • Purpose: Current limitation
  • Soldering: Weld spot 2mm from head, Temperature < 360, Time < 3 sec
  • Storage Temperature: -1040
  • Storage Humidity: 75% RH
  • Avoid corrosive gases and direct sunlight
  • Storage Period: 1 year after opening, re-inspection required if exceeding period.

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Changsha Purple Horn E-Commerce Co., Ltd.
Location 2332 Kaibin Commercial Plaza, No. 419 Shaoshan Middle Road, Shazitang Street, Yuhua District, Changsha City, Hunan Province
Contact Person Coral

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