Temperature Measurement Nanjing Shiheng Elec MF11 503K Compensated NTC Thermistor for Control Systems

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Product Description

Product Overview

The MF11 series is a compensated NTC thermistor manufactured by Nanjing Shiheng Electronics Technology Co., Ltd. Designed for temperature measurement and control, these thermistors offer reliable performance within a wide operating temperature range of -30C to 125C. They are suitable for various applications requiring accurate temperature sensing and regulation.

Product Attributes

Brand: Shiheng
Product Type: Compensated NTC Thermistor
Model Series: MF11
Origin: Nanjing, China
Encapsulation Material: Epoxy Resin
Lead Wire Material: Tinned Copper Clad Steel Wire
Body Color: Green
Marking Color: Black
Certifications: ISO9001:2008, ISO14001:2004, ROSH, CQC, UL (E240991), TUV (R50245892)

Technical Specifications

Item	Symbol	Test Condition	Unit	Performance Requirement
Zero-power resistance at 25	R25	Ta=250.1, Test Power 0.1mW	K	50K10%
B Value	B25/50	B=[(TaTb)/(Tb-Ta)]ln(Ra/Rb)	K	430010%
Dissipation Factor		Still air	mW/	Approx. 4.5
Time Constant		Still air	sec	Approx. 20
Insulation Resistance	/	1000V/DC, 1min	M	500
Operating Temperature Range	/	/		-30 ~ 125
Maximum Rated Power	Pmax	/	mW	450
Lead Strength (Tensile)	/	0.35	/	No visible damage; R25 R/R3%
Solderability	/	Temperature 2455, Time 2-3 sec	/	Tinning area 95%
Resistance to Soldering Heat	/	Solder pot temperature: 2605, Immersion depth 6mm from body, Time 51 sec	/	R25 R/R3%
Steady State Damp Heat	/	Temperature: 402, Humidity: 932%, Time: 500 hours	/	R25 R/R3%
Temperature Rapid Change	/	-30 30min25 5min125 30min25 5min, 5 cycles	/	R25 R/R3%
High Temperature Storage	/	Temperature: 1255, Time: 1000 hours	/	R25 R/R5%
Low Temperature Storage	/	Temperature: -305, Time: 1000 hours	/	R25 R/R5%

Product Model Explanation

MF11-503K

MF11: Compensated NTC Thermistor
503: Zero-power resistance at 25 is 50K
K: Resistance Tolerance Code (J-5%, K-10%, M-20%)

Usage Notes

Application: Temperature measurement and control.
Soldering: When soldering with a soldering iron, the welding point should be at least 2mm away from the coating layer. Soldering temperature should be below 360, and soldering time should be less than 3 seconds.
Storage Temperature: -10 ~ 40
Storage Humidity: 75% RH
Storage Environment: Avoid storage in environments with corrosive gases and direct sunlight.
Packaging: After opening the package, reseal for storage.