1N4777A

• 8.5 VOLT NOMINAL ZENER VOLTAGE + 5% • TEMPERATURE COMPENSATED ZENER REFERENCE DIODES 1N4775 thru 1N4784A • LOW CURRENT RANGE: 0.5 AND 1.0 mA • METALLURGICALLY BONDED • DOUBLE PLUG CONSTRUCTION MAXIMUM RATINGS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C DC Power Dissipation: 500mW @ +50°C Power Derating: 4 mW / °C above +50°C REVERSE LEAKAGE CURRENT lR = 10 µA @ 25°C & VR = 6 Vdc ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified. JEDEC TYPE NUMBER ZENER VOLTAGE v @I z ZT ZENER TEST CURRENT I ZT (Note 3) MAXIMUM DYNAMIC IMPEDANCE ZZT VOLTAGE TEMPERATURE TEMPERATURE RANGE STABILITY ∆V ZT (Note 1) (Note 2) VOLTS mA OHMS mV 1N4775 1N4775A 1N4776 1N4776A 8.5 8.5 8.5 8.5 0.5 0.5 0.5 0.5 200 200 200 200 1N4777 1N4777A 1N4778 1N4778A 8.5 8.5 8.5 8.5 0.5 0.5 0.5 0.5 200 200 200 200 1N4779 1N4779A 1N4780 1N4780A 8.5 8.5 8.5 8.5 0.5 0.5 1.0 1.0 1N4781 1N4781A 1N4782 1N4782A 8.5 8.5 8.5 8.5 1N4783 1N4783A 1N4784 1N4784A 8.5 8.5 8.5 8.5 NOTE 1 EFFECTIVE TEMPERATURE COEFFICIENT °C % / °C 0 to + 75 -55 to +100 0 to + 75 -55 to +100 0.01 0.01 0.005 0.005 13 26 6.4 13 0 to + 75 -55 to +100 0 to + 75 -55 to +100 0.002 0.002 0.001 0.001 200 200 100 100 3.2 6.6 64 132 0 to + 75 -55 to +100 0 to + 75 -55 to +100 0.0005 0.0005 0.01 0.01 1.0 1.0 1.0 1.0 100 100 100 100 32 66 13 26 0 to + 75 -55 to +100 0 to + 75 -55 to +100 0.005 0.005 0.002 0.002 1.0 1.0 1.0 1.0 100 100 100 100 6.4 13 3.2 6.6 0 to + 75 -55 to +100 0 to + 75 -55 to +100 0.001 0.001 0.0005 0.0005 64 132 32 66 Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current equal to 10% of lZT. NOTE 2 The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the specified mV at any discrete temperature between the established limits, per JEDEC standard No.5. NOTE 3 Zener voltage range equals 8.5 volts + 5%. FIGURE 1 DESIGN DATA CASE: Hermetically sealed glass case. DO – 35 outline. LEAD MATERIAL: Copper clad steel. LEAD FINISH: Tin / Lead POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: ANY. 22 COREY STREET, MELROSE, MASSACHUSETTS 02176 PHONE (781) 665-1071 FAX (781) 665-7379 WEBSITE: http://www.cdi-diodes.com E-mail: mail@cdi-diodes.com 1N4775 thru 1N4784A Pd, Rated Power Dissipation (mW) 600 500 400 300 200 100 0 0 25 50 75 100 125 150 175 TL, Lead temperature (C°) 3/8” from body FIGURE 2 POWER DERATING CURVE CHANGE IN TEMPERATURE COEFFICIENT ( %/°C) +.0015 +.0010 +.0005 0 -.0005 -.0010 -.0015 0.5 1.0 1.5 OPERATING CURRENT lZT (mA) 2.0 FIGURE 4 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT