BZX79C Series
Zener diode
Features
High reliability
Applications
Voltage stabilization
Construction
Silicon epitaxial planar
Absolute Maximum Ratings
Tj=25℃
Parameter Test Conditions Type Symbol Value Unit
Power dissipation I=4mm TL≤25℃ P
V 500 mW
Z-current IZ PV/VZ mA
Junction temperature Tj 175 ℃
Storage temperature range Tstg -65~+175 ℃
Maximum Thermal Resistance
Tj=25℃
Parameter Test Conditions Symbol Value Unit
Junction ambient I=4mm TL=constant RthJA 350 K/W
Electrical Characteristics
Tj=25℃
Parameter Test Conditions Type Symbol Min Typ Max Unit
Forward voltage IF=10mA VF 0.9 V
BZX79C Series
Type VZnom IZT for V
ZT and rzjT rzjK at I
ZK IR and IR at VR TKVZ
BZX79C V mA V1) Ω Ω mA μA V %/K
2V4 2.4 5 2.2~2.6 <100 <600 1 <50 1 -0.09~-0.06
2V7 2.7 5 2.5~2.9 <100 <600 1 <20 1 -0.09~-0.06
3V0 3.0 5 2.8~3.2 <95 <600 1 <10 1 -0.08~-0.05
3V3 3.3 5 3.1~3.5 <95 <600 1 <5 1 -0.08~-0.05
3V6 3.6 5 3.4~3.8 <90 <600 1 <5 1 -0.08~-0.05
3V9 3.9 5 3.7~4.1 <90 <600 1 <3 1 -0.08~-0.05
4V3 4.3 5 4.0~4.6 <90 <600 1 <3 1 -0.06~-0.03
4V7 4.7 5 4.4~5.0 <80 <500 1 <3 1 -0.05~+0.02
5V1 5.1 5 4.8~5.4 <60 <480 1 <2 1 -0.02~+0.02
5V6 5.6 5 5.2~6.0 <40 <400 1 <1 1 -0.05~+0.05
6V2 6.2 5 5.8~6.6 <10 <150 1 <3 2 0.03~0.06
6V8 6.8 5 6.4~7.2 <15 <80 1 <2 3 0.03~0.07
7V5 7.5 5 7.0~7.9 <15 <80 1 <1 5 0.03~0.07
8V2 8.2 5 7.7~8.7 <15 <80 1 <0.7 6 0.03~0.08
9V1 9.1 5 8.5~9.6 <20 <100 1 <0.5 7 0.03~0.09
10 10 5 9.4~10.6 <20 <150 1 <0.2 7.5 0.03~0.1
11 11 5 10.4~11.6 <20 <150 1 <0.1 8.5 0.03~0.11
12 12 5 11.4~12.7 <25 <150 1 <0.1 9 0.03~0.11
13 13 5 12.4~14.1 <30 <170 1 <0.1 10 0.03~0.11
15 15 5 13.8~15.6 <30 <200 1 <0.05 11 0.03~0.11
16 16 5 15.3~17.1 <40 <200 1 <0.05 12 0.03~0.11
18 18 5 16.8~19.1 <45 <225 1 <0.05 13 0.03~0.11
20 20 5 18.8~21.2 <55 <225 1 <0.05 15 0.03~0.11
22 22 5 20.8~23.3 <55 <250 1 <0.05 16 0.04~0.12
24 24 5 22.8~25.6 <70 <250 1 <0.05 18 0.04~0.12
27 27 2 25.1~28.9 <80 <3002) 1 <0.05 20 0.04~0.12
30 30 2 28~32 <80 <3002) 1 <0.05 22 0.04~0.12
33 33 2 31~35 <80 <3252) 1 <0.05 24 0.04~0.12
36 36 2 34~38 <90 <3502) 1 <0.05 27 0.04~0.12
39 39 2 37~41 <130 <3502) 0.5 <0.05 28 0.04~0.12
43 43 2 40~46 <150 <3752) 0.5 <0.05 32 0.04~0.12
47 47 2 44~50 <170 <3752) 0.5 <0.05 35 0.04~0.12
51 51 2 48~54 <180 <4002) 0.5 <0.05 38 0.04~0.12
56 56 2 52~60 <200 <4252) 0.5 <0.05 39 0.04~0.12
62 62 2 58~66 <215 <4502) 0.5 <0.05 43 0.04~0.12
68 68 2 64~72 <240 <4752) 0.5 <0.05 48 0.04~0.12
75 75 2 70~79 <255 <5002) 0.5 <0.05 53 0.04~0.12
1) Tighter tolerances available request:
BZX79B… ±2% of VZnom
2) at Iz=2.0mA
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
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
BZX79C Series
Figure 8. Zener Voltage versus Zener Current – Vz=30 thru 75 Volts
BZX79C Series
Dimensions in mm
Type No. 3)
4.2 max. 26 min. 26 min.
Cathode Anode
φ2.0 max.
Cathode identification
B
7
5
Z
9
V
X
C
1
φ0.55 max.
Standard Glass Case
JEDEC DO 35
3) Type No.
BZX79 C 5V1
① ② ③
① Series name
② Tighter tolerances available request:
B ------±2% of VZnom
C ------±5% of VZnom
③ Zener Voltage (VZnom), for example:
5V1 ------ 5.1V
12 ------ 12V
