1N5221B-1N5279B  
					Zener Diodes  
					POWER DISSIPATION: 500 mW  
					DO-35(GLASS)  
					Features  
					Silicon planar power zener diodes  
					Standard Zener voltage tolerance is ±5%. With a "B"  
					suffix. Other tolerances are available upon request.  
					Mechanical Data  
					Case:DO-35, Glass Case  
					Terminals: Solderable per MIL-STD-202, Method 208  
					Polarity: Cathode Band  
					Dimensions in millimeters  
					Marking: Type Number  
					Approx. Weight: 0.13 grams.  
					MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS  
					Ratings at 25 ambient temperature unless otherwise specified.  
					Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by20%.  
					SYMBOL  
					VALUE  
					UNIT  
					mW  
					Zener current (see Table "Characteristics")  
					5001)  
					175  
					Ptot  
					TJ  
					Power dissipation at Tamb=25  
					Junction temperature  
					Ts  
					-55---+175  
					Storage temperature range  
					SYMBOL  
					RθJA  
					MIN  
					TYP  
					MAX  
					3001)  
					1.2  
					UNIT  
					/W  
					Thermal resistance junction to ambient  
					Forw ard voltage at IF=200mA  
					V
					V
					F
					NOTES: (1) Valid provided that leads at a distance of 10 mm from case are kept at ambient temperature.  
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