Surge Current Suppression Component Nanjing Shiheng Elec MF72 22D9 Power Type NTC Thermistor with Black Epoxy Resin

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Product Description

Product Overview

The MF72 Power Type NTC Thermistor, manufactured by Nanjing Shiheng Electronics Technology Co., Ltd., is designed for surge current suppression. It features a zero-power resistance of 22 at 25 with a B value of 3000K. This component operates within a temperature range of -40 to 170 and supports a maximum allowable capacitance of 240Vac/150F. It is constructed with a black epoxy resin encapsulation and tin-plated copper leads.

Product Attributes

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

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		2220%
B Value	B25/50	B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb)	K	300010%
Maximum Steady Current	I max	-	A	1
Maximum Allowable Capacitance	CT	240Vac	F	150
Dissipation Factor		-	mW/	11
Thermal Time Constant		-	sec	30
Withstand Voltage	-	500V/AC, 1min	-	No breakdown or arcing
Insulation Resistance	-	500V/DC, 1min	M	500
Operating Temperature Range	-	-		-40 ~ 170
Maximum Rated Power	Pmax	-	W	2
Lead Strength	-	Tension: 10s, 10N (0.5	-	No visible damage, R/R25%
Solderability	-	2455, 2-3s	-	95% tinning area
Resistance to Soldering Heat	-	2605, 6mm from body, 101s	-	R/R25%
Steady State Damp Heat	-	402, 93%2% 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%
Maximum Steady Current Endurance	-	Continuous application of max steady current at room temp, 100024h	-	R/R25%
Maximum Capacitance Endurance	-	1000 cycles (50ms on, 5x thermal time constant off)	-	R/R25%
Model: MF72-22D9	Body Diameter (D9)	Max: 11.0 mm	mm	-
	Length (L1)	Min: 17 mm	mm	-
	Lead Spacing (F1)	7.51 mm	mm	-
	Lead Length (L2)	82 mm	mm	-
	Lead Diameter (d)	0.80.05 mm	mm	-
	Max Width (T)	Max: 5.5 mm	mm	-

Usage Precautions

Primary Use: Surge current suppression.
Soldering: Keep soldering point at least 2mm from the coating layer. Soldering temperature
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.