Multilayer Varistors  
					n Performance Characteristics  
					l Electrical  
					Characteristics  
					Test Method  
					Specifications  
					ÑÑÑ  
					Unless otherwise specified all test and measurements shall  
					be made at a temperature of 15 to 35 ¡C and at a relative  
					humidity of 45 to 75 %RH. If results obtained are doubted a  
					further test should be carried out at a temperature of 20±  
					2 ¡C and a relative humidity of 60 to 70 %RH.  
					Standard Test  
					Condition  
					Maximum  
					The maximum DC voltage that can be applied continuously  
					in the specified operating temperature.  
					allowable Voltage  
					The voltage between two terminals with the specified  
					measuring current CmA DC applied is called V or VcmA.  
					c
					Varistor voltage  
					The measurement shall be made as fast as possible to avoid  
					heat affection.  
					Capacitance shall be measured with the specified To meet  
					Capacitance  
					measuring frequency, 0.2 to 2.0 Vms., 0V bias and 20 ¡C.  
					the specified value.  
					The Maximum current within the varistor voltage change of  
					±10 % when a standard impulse current of 8/20 ms is  
					applied two times with an interval of 5 minutes.  
					Maximum peak current  
					Maximum ESD  
					The maximum ESD within the varistor voltage change of ±30%  
					when impressing 10 times of ESD (five times of positive-  
					negatives for each polarity) which is based on IEC61000-4-2  
					Temperature coefficient Coefficient indicating dependency of V-I characteristics on  
					EZJZ Series: ±0.1 %/¡C  
					EZJS Series: ±0.3 %/¡C  
					Varistor Voltage  
					temperature. This is shown by the change of VcmA per ¡C at  
					the ambient operating temperature.  
					Temperature coefficient  
					capacitance  
					This is shown by the maximum capacitance change at EZJZ Series: ±20 %  
					the ambient operating temperature.  
					EZJS Series: ±10 %  
					l Mechanical requirements  
					Characteristics  
					Test Method  
					Specifications  
					After securing the specimen by the body with tweezers and  
					dipping in to the specified soldering flux, the specimen shall  
					be completely immersed into a soldering bath having a  
					temperature of 235±5 ¡C for 4±1 seconds. And then the  
					specimen shall be visually examined.  
					Approximately 75 %  
					of the terminals shall  
					be covered with new  
					solder  
					Solderability  
					Use the specified soldering flux and solder following:  
					Soldering Flux: Ethanol solution of rosin about 25 % by weight  
					Solder: Eutectic solder (Sn 63 : Pb 37)  
					uniformly,  
					After preheating the specimen according to the following  
					conditions in Table-1, the specimen shall be completely  
					immersed into a soldering bath having a temperature of 270±5  
					¡C for 3±0.5 seconds. And then be stored at room No remarkable  
					temperature for 24±2 hours. Thereafter, the change of V  
					and the mechanical damage shall be examined.  
					c
					mechanical  
					Resistance to  
					soldering heat  
					ÆV /V < ±10 %  
					c
					c
					Step  
					1
					2
					Temperature  
					080 to 100 ûC  
					150 to 200 ûC  
					Period  
					300 to 360 s  
					300 to 360 s