• 1N821UR-1, 1N823UR-1, 1N825UR-1, 1N827UR-1 AND 1N829UR-1 AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/159 • TEMPERATURE COMPENSATED ZENER DIODES 1N821UR-1 thru 1N829UR-1 and CDLL821 thru CDLL829A • LEADLESS PACKAGE FOR SURFACE MOUNT • 6.2 AND 6.55 VOLT NOMINAL ZENER VOLTAGES • 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 = 2 µA @ 25°C & VR = 3 Vdc ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified. CDI TYPE NUMBER ZENER VOLTAGE V @I Z ZT ZENER TEST CURRENT I ZT MAXIMUM ZENER IMPEDANCE (Note 1) Z ZT VOLTAGE TEMPERATURE STABILITY ∆V ZT -55° to +100° EFFECTIVE TEMPERATURE COEFFICIENT DIM D F G G1 S MILLIMETERS INCHES MIN MAX MIN MAX 1.60 1.70 0.063 0.067 0.41 0.55 0.016 0.022 3.30 3.70 .130 .146 2.54 REF. .100 REF. 0.03 MIN. .001 MIN. (Note 2) VOLTS mA OHMS mV % / °C CDLL821 CDLL821A CDLL822 † 5.9 - 6.5 5.9 - 6.5 5.9 - 6.5 7.5 7.5 7.5 15 10 15 96 96 96 0.01 0.01 0.01 CDLL823 CDLL823A CDLL824 † 5.9 - 6.5 5.9 - 6.5 5.9 - 6.5 7.5 7.5 7.5 15 10 15 48 48 48 0.005 0.005 0.005 CASE: DO-213AA, Hermetically sealed glass case. (MELF, SOD-80, LL34) CDLL825 CDLL825A CDLL826 5.9 - 6.5 5.9 - 6.5 6.2 - 6.9 7.5 7.5 7.5 15 10 15 19 19 20 0.002 0.002 0.002 LEAD FINISH: Tin / Lead CDLL827 CDLL827A CDLL828 5.9 - 6.5 5.9 - 6.5 6.2 - 6.9 7.5 7.5 7.5 15 10 15 9 9 10 0.001 0.001 0.001 CDLL829 CDLL829A 5.9 - 6.5 5.9 - 6.5 7.5 7.5 15 10 5 5 0.0005 0.0005 † Double Anode: Electrical Specifications Apply Under Both Bias Polarities. NOTE 1 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. FIGURE 1 DESIGN DATA POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: Any. MOUNTING SURFACE SELECTION: The Axial Coefficient of Expansion (COE) Of this Device is Approximately +6PPM/°C. The COE of the Mounting Surface System Should Be Selected To Provide A Suitable Match With This Device. 22 COREY STREET, MELROSE, MASSACHUSETTS 02176 PHONE (781) 665-1071 FAX (781) 665-7379 WEBSITE: http://www.cdi-diodes.com E-mail: [email protected] CDLL821 thru CDLL829A 500 400 300 200 100 0 0 25 50 75 100 125 150 175 TL, Ambient temperature (°C) ZENER IMPEDANCE ZZT (OHMS) 600 100 50 10 5 FIGURE 2 POWER DERATING CURVE 1 5 6 7 8 9 OPERATING CURRENT lZT (mA) FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT CHANGE IN TEMPERATURE COEFFICIENT ( %/°C) Pd, Rated Power Dissipation (mW) 500 +.0010 +.0005 0 -.0005 -.0010 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 OPERATING CURRENT lZT (mA) 9.5 FIGURE 4 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT 10