SMW Power Wire Wound Chip Resistors Suppliers and Manufacturers - Made in China

Product Description

SMW Power Wire Wound Chip Resistors

Products

SMW Power Wire Wound Chip Resistors

Features

1. Flameproof UL94V0 molded package, resistant to heat,humidity & insulation.

2. Special design for automatic surface mounting.

3. Excellent mechanical strength & electrical stability.

4. Reducing assembly costs.

Electrical And Mechanical Performance of SMW Power Wire Wound Chip Resistors:

Characteristics	Standards	Test Methods
Resistance Tolerance	±5%(J)or ±1%(F)	-
Resistance Temp. Coeff.	±200 ppm/°C	-55°C ~ 200°C
Power Rating Load	Surface temp. 275°C Max.ΔR/R≤±1%	Rated voltage for 30 minutes
Short Time Overioad	±1%	5 times of rated wattage for 5 seconds.
Dielectric Withstanding Voltage	No evidence of mechanical damage or insulation breakdown.	AC 500V for 1 minutes
Insulation Resistance	10,000MΩ	DC 500V megger
Solder-ability	Minimum95%coverage	235 ± 5°C for 2 seconds
Resistance to Soldering Heat	No evidence of mechanical damage.ΔR/R≤±1%	270±5°Cfor 10 ±1 seconds

Environmental Characteristics of SMW Power Wire Wound Chip Resistors:

Characteristics	Standards	Test Methods
Temp. Cycle	△R/R≤±1%	-55°C( 30 min.) —►Room Temp.( 3 min.) —► +200°C( 30 min.) —► Room Tenp.( 3 min.) / ( 5 cycles)
Load Life	△R/R≤±2%	Rated power load 90 minutes ON 30 minutes OFF 70°C 1000 hours
Moisture-proof Load Life	△R/R≤±2%	Rated power load 90 minutes ON 30 minutes OFF 40°C95%RH 500 hours

Dimensions of SMW Power Wire Wound Chip Resistors: