BZX79C Series Zener diode Features High reliability Applications Voltage stabilization Absolute Maximum Ratings Tj=25 Parameter Test Conditions Symbol Value Unit PV 500 mW Z-current IZ PV/VZ mA Junction temperature Tj 175 Tstg -65~+175 Symbol Value Unit RthJA 350 K/W Power dissipation Type I=4mm TL25 Storage temperature range Maximum Thermal Resistance Tj=25 Parameter Junction ambient Test Conditions I=4mm TL=constant Stresses exceeding maximum ratings may damage the device. Maximum ratings are stress ratings only. Functional operation above the recommended operating conditions is not implied. Extended exposure to stresses above the recommended operating conditions may affect device reliability. Electrical Characteristics Tj=25 Parameter Forward voltage Test Conditions Type IF=10mA Symbol VF Min Typ Max Unit 0.9 V Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3f, 1-Jun-2008 1/6 BZX79C Series Type BZX79C 2V4 2V7 3V0 3V3 3V6 3V9 4V3 4V7 5V1 5V6 6V2 6V8 7V5 8V2 9V1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 1) VZnom V 2.4 2.7 3.0 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 IZT for VZT and mA V 5 2.2~2.6 5 2.5~2.9 5 2.8~3.2 5 3.1~3.5 5 3.4~3.8 5 3.7~4.1 5 4.0~4.6 5 4.4~5.0 5 4.8~5.4 5 5.2~6.0 5 5.8~6.6 5 6.4~7.2 5 7.0~7.9 5 7.7~8.7 5 8.5~9.6 5 9.4~10.6 5 10.4~11.6 5 11.4~12.7 5 12.4~14.1 5 13.8~15.6 5 15.3~17.1 5 16.8~19.1 5 18.8~21.2 5 20.8~23.3 5 22.8~25.6 2 25.1~28.9 2 28~32 2 31~35 2 34~38 2 37~41 2 40~46 2 44~50 2 48~54 2 52~60 2 58~66 2 64~72 2 70~79 rzjT <100 <100 <95 <95 <90 <90 <90 <80 <60 <40 <10 <15 <15 <15 <20 <20 <20 <25 <30 <30 <40 <45 <55 <55 <70 <80 <80 <80 <90 <130 <150 <170 <180 <200 <215 <240 <255 rzjK at <600 <600 <600 <600 <600 <600 <600 <500 <480 <400 <150 <80 <80 <80 <100 <150 <150 <150 <170 <200 <200 <225 <225 <250 <250 <3001) <3001) <3251) <3501) <3501) <3751) <3751) <4001) <4251) <4501) <4751) <5001) IZK mA 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 IR and IR at VR A V <50 1 <20 1 <10 1 <5 1 <5 1 <3 1 <3 1 <3 1 <2 1 <1 1 <3 2 <2 3 <1 5 <0.7 6 <0.5 7 <0.2 7.5 <0.1 8.5 <0.1 9 <0.1 10 <0.05 11 <0.05 12 <0.05 13 <0.05 15 <0.05 16 <0.05 18 <0.05 20 <0.05 22 <0.05 24 <0.05 27 <0.05 28 <0.05 32 <0.05 35 <0.05 38 <0.05 39 <0.05 43 <0.05 48 <0.05 53 TKVZ %/K -0.09~-0.06 -0.09~-0.06 -0.08~-0.05 -0.08~-0.05 -0.08~-0.05 -0.08~-0.05 -0.06~-0.03 -0.05~+0.02 -0.02~+0.02 -0.05~+0.05 0.03~0.06 0.03~0.07 0.03~0.07 0.03~0.08 0.03~0.09 0.03~0.1 0.03~0.11 0.03~0.11 0.03~0.11 0.03~0.11 0.03~0.11 0.03~0.11 0.03~0.11 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 0.04~0.12 at Iz=2.0mA Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3f, 1-Jun-2008 2/6 BZX79C Series Characteristics (Tj=25 unless otherwise specified) Figure 1. Typical Thermal Resistance Figure 2. Typical Forward Characteristics Figure 3. Temperature coefficients (-55 to +150 temperature range; 90% of the units are in the ranges indicated.) Figure 4. Effect of zener current on zener impedance Figure 5. Effect of zener voltage on zener impedance Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3f, 1-Jun-2008 3/6 BZX79C Series Figure 6. Zener Voltage versus Zener Current - Vz=1 thru 16 Volts Figure 7. Zener Voltage versus Zener Current - Vz=15 thru 30 Volts Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3f, 1-Jun-2008 4/6 BZX79C Series Figure 8. Zener Voltage versus Zener Current - Vz=30 thru 75 Volts Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3f, 1-Jun-2008 5/6 BZX79C Series Dimensions in mm Cathode identification Type No. 0.55 max. BZ X 79C Cathode 2.0 max. 26 min. 4.2 max. Anode 26 min. Standard Glass Case JEDEC DO-35 Marking BZX 7 9C 5V1 Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3f, 1-Jun-2008 6/6