Power Type NTC Thermistor Nanjing Shiheng Elec MF72 2.5D11 Designed for Electrical Current Protection

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Product Description

Product Overview

The MF72 series from Nanjing Shiheng Electronics Technology Co., Ltd. are power type NTC thermistors designed to suppress inrush current. These components offer reliable performance with a wide operating temperature range and are manufactured under stringent quality management systems. They are suitable for applications requiring protection against current surges.

Product Attributes

Brand: Shiheng
Product Type: Power Type NTC Thermistor
Model Series: MF72
Origin: China
Encapsulation Material: Black Silicone Resin
Lead Material: Tinned Copper Wire
Certifications: ISO9001:2008, ISO/TS16949:2009, ISO14001:2004, RoHS, CQC, UL (E241319), TUV (R50245892), Jiangsu High-tech Product

Technical Specifications

Item	Symbol	Test Conditions	Unit	Performance Requirement
Zero-power Resistance at 25	R25	Ta=250.5, Test Power 0.1mW, Tested in air		2.5 20%
B Value	B25/50	B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb) K	K	2600 10%
Max Steady Current	I max	-	A	5
Max Allowable Capacitance	CT	240Vac	F	470
Dissipation Factor		-	mW/	13
Thermal Time Constant		-	sec	43
Withstand Voltage	-	500V/AC, 1min	-	No breakdown or flashover
Insulation Resistance	-	500V/DC, 1min	M	500
Operating Temperature Range	-	-		-40 ~ 170
Max Rated Power	Pmax	-	W	3
Lead Strength (Pull)	-	101 sec	N	10 (for 0.5
Solderability	-	2455, 2-3 sec	-	95% tinned area
Resistance to Soldering Heat	-	2605, 6mm from body, 101 sec	-	R/R25%
Steady State Damp Heat	-	402, 932% RH, 1000 hours	-	R/R25%
Rapid Temperature Change	-	5 cycles (-40 30min25 5min170 30min25 5min)	-	R/R25%
High Temperature Storage	-	1705, 1000 hours	-	R/R25%
Max Steady Current Endurance	-	Continuous max steady current at room temp, 100024h	-	R/R25%
Max Capacitance Endurance	-	1000 cycles (50ms on, 5x off)	-	R/R25%
Model: MF72-2.5D11	Body Diameter (D)	-	mm	11
Model: MF72-2.5D11	L1	-	mm	17 Min
Model: MF72-2.5D11	L2	-	mm	8 2
Model: MF72-2.5D11	F1	-	mm	7.5 1
Model: MF72-2.5D11	F2	-	mm	4 1.5
Model: MF72-2.5D11	T	-	mm	Max 5.5
Model: MF72-2.5D11	d	-	mm	0.8 0.05

Usage and Storage

Primary Use: Inrush current suppression.
Soldering: Keep at least 2mm from the coating layer, temperature below 360, time less than 3 seconds.
Storage Temperature: -10 to 40.
Storage Humidity: 75% RH.
Storage Environment: Avoid corrosive gases and direct sunlight.
Packaging: Reseal after opening.
Shelf Life: 1 year.