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Cement Resistors

Cement Resistors

Features:
1.Small diamension,excellent stability in high temperature,resistant to humidity and shock.

2.Excellent insulation being used in PCB.

3.Instant overload capability,low noise figures and low annual.

4.Metal oxide file cutting core can offer high range resistance.

5.Lead-free and RoHS compliant.

Product consultation hotline:18617185077
Product details

Power attenuation curve and temperature rise curve:

Electrical specifications:


Project Items Category Style
2W 3W 5W 7W 10W 15W 20W
70 ℃ rated power
Power at 70 ℃		 2W 3W 5W 7W 10W 15W 20W
Maximum working voltage
Maximum Working Voltage		 250V 350V 500V 500V 1000V 1000V 1000V
Maximum load voltage
Maximum Overload Voltage		 500V 700V 1000V 1000V 1000V 1000V 1000V
Insulation voltage
Dielectric Withstanding Voltage		 1000V 1000V 1000V 1000V 1000V 1000V 1000V
Resistance range
Value Range		 J (± 5%) 10 Ω -1M Ω 10 Ω -100K Ω 10 Ω -100K Ω 10 Ω -100K Ω 10 Ω -100K Ω 10 Ω -100K Ω 10 Ω -100K Ω
K (± 10%) 1 Ω -22M Ω 0.2 Ω -1M Ω 0.2 Ω -1M Ω 0.2 Ω -1M Ω 0.2 Ω -1M Ω 0.2 Ω -1M Ω 0.2 Ω -1M Ω
Operating temperature range
Operation Temp.Range		 -55 ℃~155 ℃

Rated Continuous Working Voltage (RCWV)=√ PR, whichever is higher than the highest working voltage

Lesser of √ PR or maximum working voltage

Main performance:

Reference standard: JIS-C-5202

project
Items		 Standard value
Standard		 test method
Test Methods
Short term overload
Short time overload		 ± 2% 2.5 times rated voltage/5 seconds
2.5 times RCWV/5 seconds
Heat resistance
Resistance to solver head		 ± 2% Soldering temperature: 350 ± 10 ℃, time: 3 seconds
Solder Temperature: 350 ± 10 ℃, time: 3 seconds
Voltage withstand
Dielectric with standing voltage		 No burning or insulation damage
No breakdown or flashover		 Apply DC voltage according to the electrical specification sheet for 1 minute continuously
AC potential attention specifically specified in the list for 60 seconds
temperature coefficient
Temperature Coefficient		 MOF: ± 350 PPM/℃
Winding: -80-900PPM/℃		 Experimental temperature: Room temperature 100 ℃
Test temperature: Indoors Temperature. 100 ℃
Moisture resistance load
Humidity Load Life		 ± 5% Temperature: 40 ± 2 ℃, relative humidity: 90-95%, 1 time the rated working voltage, time 1000 hours (1.5 hours on and 0.5 hours off)
Rated voltage 1.5hr ON, 0.5hr OFF at 40 ± 2 ℃, 90-95&RH for 1000hr
Load life
Load Life		 ± 5% Temperature: 70 ± 2 ℃, 1 time of rated working voltage, time 1000 hours (1.5 hours on/0.5 hours off)
Rated voltage 1.5hr ON, 0.5hr OFF at 70 ± 2 ℃ for 1000hr
Welding strength
Terminal Strength		 No lead detachment
No evidence of mechanical damage or loose terminals		 2.5 kg pulling force, lasting for 10 seconds
2.5Kg for 10 seconds
Solderability
Solderability		 More than 95% of the tin eating area
At least 95% coverage		 Soldering temperature: 235 ± 5 ℃, time: 2 ± 0.5 seconds
235 ± 5 ℃ for 2 ± 0.5 seconds

Part number code:

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