BZX79C(B)2V4
THRU
ZENER DIODES
BZX79C(B)75
DO-35
Standard Zener voltage tolerance is 5% AND
SUFFIX "BZX79B" FOR 2%
SUFFIX "BZX79C" FOR 5%
SILICON PLANAR POWER ZENER DIODE
For use in stabilizing and dipping circuits with
high power rating
0.79(2.0)
MAX.
1.02(26.0)
MIN.
0.165(4.20)
MAX.
Case: DO-35 Glass Cases
0.020(0.52)
TYP.
1.02(26.0)
MIN.
Characteristic
MaximumPower Dissipation at Tamb=25
Maximum Z-current
Symbol
P
tot
I
Z
VF
R
th
J-A
Value
Units
W
0.5
P
V
/ V
Z
Maximum instantaneous forward voltage drop
at I
F
=10 mADC
MaximumTremal Resistance Junction to Ambient Air
L=4mm T
L
=constant
Maximum Junction temperature
Storage temperature range
0.90
350
175
-65 to+175
Volts
K/W
T
J
Tstg
RATINGS AND CHARACTERISTIC BZX79C(B)2V7 THRU BZX79C(B)75
Ptot-TOTAL POWER DISSIPATION
(W)
W
0.5
0.4
0.3
0.2
0.1
FIGURE.1-TOTAL POWER DISSIPATION
CHARACTERISTICS
1000
V
Z
-VOLTAGE CHANGE(mV)
FIGURE.2-TYPICAL CHANGE OF WORKING
VOLTAGE CHARACTERISTICS
T
j
=25
100
10
I
Z
=5mA
0
0
25
50
75
100 125 150 175 200
0
0
5
10
15
20
25
AMBIENT TEMPERATURE
V
Z
,Z-VOLTAGE(V)
1.3
1.2
1.1
1.0
0.9
TK
VZ
-TEMPERATURE COEFFICIENT OF
V
Z
(10
-4
/K)
Vztn-RELATIVE VOLTAGE CHANGE
FIGURE.3-TYPICAL CHANGE OF WORKING
VOLTAGE CHARACTERISTICS
V
ztn
=V
zt
/V
z
(25 )
TK
VZ
=10X10 /K
-4
15
FIGURE.4-TEMPERATURE COEFFICIENT
CHARACTERISTICS
8X10 /K
-4
6X10 /K
-4
4X10 /K
-4
2X10 /K
0
-4
-2X10 /K
-4
-4X10 /K
-4
10
5
I
Z
=5mA
0
-5
0.8
-60
0
60
120
180
240
0
10
20
30
40
50
JUNCTION TEMPERATURE
V
Z
,Z-VOLTAGE(V)
C
P
-DIODE CAPACITANCE(
P
F)
150
V
R
=2V
T
j
=25
I
F
-FORWAR CURRENT(mA)
200
FIGURE.5-DIODE CAPACITANCE
CHARACTERISTICS
100
10
1
0.1
0.01
FIGURE.6-FORWARD CURRENT
CHARACTERISTICS
T
j
=25
100
50
0
0
5
10
15
20
25
0.001
0
0.2
0.4
0.6
0.8
1.0
V
Z
,Z-VOLTAGE(V)
V
F
,FORWARD VOLTAGE(V)
2
RATINGS AND CHARACTERISTIC BZX79C(B)2V4 THRU BZX79C(B)75
Nominal
Zener
Voltage
Vz at IzT1
Volts
2.2-2.6
2.5-2.9
2.8-3.2
3.1-3.5
3.4-3.8
3.7-4.1
4.0-4.6
4.4-5.0
4.8-5.4
5.2-6.0
5.8-6.6
6.4-7.2
7.0-7.9
7.7-8.7
8.5-9.6
9.4-10.6
10.4-11.6
11.4-12.7
12.4-14.1
13.8-15.6
15.3-17.1
16.8-19.1
18.8-21.2
20.8-23.3
22.8-25.6
25.1-28.9
28-32
31-35
34-38
37-41
40-46
44-50
48-54
52-60
58-66
64-72
70-79
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
2
2
2
2
2
2
2
2
2
2
2
2
<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
<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
<300
<300
<325 2)
<3502)
<3502)
<3752)
2)
<375
2)
<400
2)
<425
2)
<450
<4752)
<500
2)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
Test
Current
IzT1
Dynamic
Resistance
R
z
j at I
Z
T1
Dynamic
Resistance
R
Z
j at I
Z
T2
Maximum Reverse
Leakage Current
IR
A
50
20
10
Device
Type
Vz
Test
Current
IzT2
At
VR
Volts
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.0
5.0
6.0
7.0
7.5
8.5
9.0
10
11
12
13
15
16
18
20
22
24
27
28
32
35
38
39
43
48
53
Temp. Coeff.
Of Zener
current
at Iz= Iz
T1
Vz% /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~+0.10
+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
Volts
BZX79C2V4
BZX79C2V7
BZX79C3V0
BZX79C3V3
BZX79C3V6
BZX79C3V9
BZX79C4V3
BZX79C4V7
BZX79C5V1
BZX79C5V6
BZX79C6V2
BZX79C6V8
BZX79C7V5
BZX79C8V2
BZX79C9V1
BZX79C10
BZX79C11
BZX79C12
BZX79C13
BZX79C15
BZX79C16
BZX79C18
BZX879C20
BZX79C22
BZX79C24
BZX79C27
BZX79C30
BZX79C33
BZX79C36
BZX79C39
BZX79C43
BZX79C47
BZX79C51
BZX79C56
BZX79C62
BZX79C68
BZX79C75
2)
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
5.0
5.0
3.0
3.0
3.0
2.0
1.0
3.0
2.0
1.0
0.7
0.5
0.2
0.1
0.1
0.1
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
Trighter tolerances available request
BZX79B...... 2% OF Vznom
BZX79C...... 5% OF Vznom
1) at Iz=2.0mA
3
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