Formosa MS  
					1N5221B~1N5267B  
					Zener diode  
					Features  
					1. High reliability  
					2. Very sharp reverse characteristic  
					3. Low reverse current level  
					4. VZ-tolerance± 5%  
					Applications  
					Voltage stabilization  
					Absolute Maximum Ratings  
					T=25?  
					j
					Parameter  
					Power dissipation  
					Test Conditions  
					amb= 75?  
					Type  
					Symbol  
					Value  
					500  
					Unit  
					mW  
					mA  
					?
					T
					PV  
					IZ  
					Z-current  
					PV/VZ  
					200  
					Junction temperature  
					Storage temperature range  
					T
					j
					Tstg  
					-65~+200  
					?
					Maximum Thermal Resistance  
					T=25?  
					j
					Parameter  
					Test Conditions  
					I=9.5mm(3/8”) TL=constant  
					Symbol  
					RthJA  
					Value  
					300  
					Unit  
					Junction ambient  
					K/W  
					Electrical Characteristics  
					T=25?  
					j
					Parameter  
					Test Conditions  
					IF=200mA  
					Type  
					Symbol Min  
					VF  
					Typ Max Unit  
					Forward voltage  
					1.1  
					V
					Formosa MS  
					1