********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************

 

1.Features產品特性
  體積小，耐震耐濕性以及散熱性非常好。
   Small diamension,excellent stability in high temperature , resistant to humidity and shock.
   絕緣性好，使用于電路板上絕緣性較好。
  Excellent imsulation being used in PCB.
  耐電壓，低雜音，耐熱，阻值無變化
 Resistance to instant overload , low noise figure, resistance to heat and low shift on values.
使用金屬氧化膜瓷芯代替繞線可制作高阻值電阻
 Metal oxide file cutting core can offer high range resistance.
符合無鉛/ROHS要求
Lead-free and ROHS compliant
 
2.Power Derationg Curve & Temp.Rise Curve
 
3.Performance Specifications
 

Characteristics	Standard	Test Methods
1. Temperature  Coefficient of    Resistors  (PPM/℃)	Wire Wound  –80~+900	Natural resistance change per temperature degree centigrade. (PPM/℃) R1: Resistance value at reference temp. (T1) R2: Resistance value at reference temp. (T2) T1:  Room temperature T2:T1+100℃
2. Dielectric Withstanding Voltage	No evidence of flashover, mechanical damage or arcing or insulation break down	Resistors shall be subjected to an approximately sinusoidal test potential (as below) 60Hz applied between both terminals connected together and a 90° V-Block extending beyond the end of the resistor
		Resistor Wattage		AC or RMS Volts
		1W ABOVE		500
3. Solderability	90% Covered min.	The terminal lead shall be dipped into molten solder s at 3.2 to 4.8mm fromthe body of resistor.The temp. and time as below: a. 235±5℃for 2±0.5seconds b. 270±10℃for2±0.5seconds
4. Resistance to Soldering	No evidence of mechanical damage ?R / R at±2% Max	The terminal of the resistor is dipped into the molten solder of 350 ± 10℃for 3 ± 0.5 seconds. Then put the resistor in the room temperature. For 3 min.hours.
5. Humidity Load Life	±5% Max/ 1000Hours	Resistance change after 1000 hours (1.5 hours on 0.5 hours off) at rated continuous working voltage in a humidity chamber controlled at   40 ± 2℃and 90~95% relative humidity.
6. Load Life	±5% Max/ 1000Hours	Permanent resistance change after 1000 hours operating at rated continuous working voltage with a duty cycle of 1.5 hours on 0.5 hours off at 70 ±2℃ambient
7. Temperature Cycling	±2% Max with no evidenceofmechanical damage	Resistance change after continuous 5 cycles for duty cycle as specified below.
		Step	Temperature		Time
		1	-30℃		30 Minutes
		2	+25℃		10~15 Minutes
		3	+85℃		30 Minutes
		4	+25℃		10~15 Minutes

 

Characteristics	Standard	Test Methods
8. Short Time Overload	?R / R at±3% Max with no evidence of arcing burning, or charring	Permanent resistance change after the application of a potential of 2.5 times rated continuous working voltage for 5 seconds at room temperature.
9. Terminal Strength	No evidence of mechanical damage or loosening terminals	Direct load resistance to 2.5kg direct load 30± 5 seconds twist test, for axial leads unit only. Terminal lead shall be bent through at a right angle at a point of 6.35mm from the body of resistor and shall be rotated through at a right angle about the original axis of the bent terminal in alternating direction for a total of   3 rotations.
10. Burn Out	The arcing and  or flaming duration is less than 2seconds and the flame height is less than 1/2 inch.	Resistors burning out or opening up for overloads in excess of 10 times rated wattage (regardless of how it is applied)