BZX79 SERIES
SILICON PLANAR ZENER DIODES
DO-35
min. 1.083 (27.5)
FEATURES
The Zener voltages are graded according to the international
E 24 standard. Higher Zener voltages and 1% tolerance
available on request.
max. .150 (3.8)
max.
∅
.079 (2.0)
Diodes available in these tolerance series:
±2% BZX79-B
±3% BZX79-F
±5% BZX79-C
Cathode
Mark
min. 1.083 (27.5)
max.
∅
.020 (0.52)
MECHANICAL DATA
Case:
DO-35 Glass Case
Weight:
approx. 0.13 g
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature 8unless otherwise specified
SYMBOL
VALUE
UNIT
Zener Current (see Table “Characteristics”)
Power Dissipation at T
amb
= 25°C
Junction Temperature
Storage Temperature Range
Continuous Forward Current
Peak reverse power dissipation (non-repetitive) t
p
=100ms,
square wave
P
tot
T
j
T
S
I
F
P
ZSM
500
(1)
-65 to 200
-65 to + 200
250
40
mW
°C
°C
mA
Watts
Characteristics at Tamb = 25°C
SYMBOL
MIN.
TYP.
MAX.
UNIT
Thermal Resistance
Junction to Ambient Air
Forward Voltage
at I
F
= 10 mA
R
thJA
–
–
0.3
(1)
°C/W
V
F
–
–
0.9
Volts
NOTES:
(1) Valid provided that leads are kept at ambient temperature at a distance of 8mm from case.
12/10/98
BZX79 SERIES
ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Type
Dynamic resistance
at
I
Z
= 1 mA
f = 1 kH
Z
r
zj
Ω
max
< 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
350
375
375
400
425
450
475
500
(4)
(4)
(4)
(4)
y = B for ±2%V
Z
at
y = F for ±3%V
Z
I
Z
= 5 mA
y = C for ±5%V
Z
f = 1 kH
Z
r
zj
Ω
max.
BZX79 – y2V4
BZX79 – y2V7
BZX79 – y3V0
BZX79 – y3V3
BZX79 – y3V6
BZX79 – y3V9
BZX79 – y4V3
BZX79 – y4V7
BZX79 – y5V1
BZX79 – y5V6
BZX79 – y6V2
BZX79 – y6V8
BZX79 – y7V5
BZX79 – y8V2
BZX79 – y9V1
BZX79 – y10
BZX79 – y11
BZX79 – y12
BZX79 – y13
BZX79 – y15
BZX79 – y16
BZX79 – y18
BZX79 – y20
BZX79 – y22
BZX79 – y24
BZX79 – y27
BZX79 – y30
BZX79 – x33
BZX79 – x36
BZX79 – x39
BZX79 – x43
BZX79 – x47
BZX79 – x51
BZX79 – x56
BZX79 – x62
BZX79 – x68
BZX79 – x75
100
100
95
95
90
90
90
80
60
40
10
15
15
15
15
20
20
25
30
30
40
45
55
55
70
80
80
80
90
(3)
(3)
(3)
(3)
Temp coefficient
of Zener Voltage
at
I
Z
= 5 mA
∝
m
VZ
%/K
Reverse leakage
Current
Admissible
Zener
current
(2)
Capacitance
V
R
=0
f=1 MH
Z
Non-Repetitive
Peak Reverse
Currrent
at t
p
= 100µs
min.
– 0.08
– 0.08
– 0.08
– 0.08
– 0.08
– 0.07
– 0.04
– 0.03
– 0.02
– 0.01
0
+0.01
+0.01
+0.01
+0.02
+0.03
+0.03
+0.03
+0.03
+0.03
+0.03
+0.03
+0.03
+0.03
+0.04
+0.04
+0.04
+0.04
+0.04
+0.04
+0.04
+0.04
(3)
(3)
(3)
(3)
max.
– 0.06
– 0.06
– 0.06
– 0.05
– 0.04
– 0.03
– 0.01
+0.01
+0.05
+0.06
+0.07
+0.08
+0.09
+0.09
+0.10
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.12
+0.12
+0.12
+0.12
+0.12
+0.12
+0.12
+0.12
+0.12
(3)
(3)
(3)
(3)
I
R
nA
50,000
20,000
10,000
5,000
5,000
3,000
3,000
3,000
2,000
1,000
3,000
2,000
1,000
700
500
200
100
100
100
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
at V
R
V
1
1
1
1
1
1
1
1
1
1
2
3
5
6
7
7.5
8.5
9
10
11
12
14
15
17
18
20
22
24
27
28
32
35
38
39
43
48
53
I
Z
(mA)
167
135
125
115
105
95
90
85
80
70
64
58
53
47
43
40
36
32
29
27
24
21
20
18
16
14
13
12
11
10
9.2
8.5
7.8
7.1
6.4
5.8
5.3
(pF)
max.
I
ZSM
(A)
450
450
450
450
450
450
450
300
300
300
200
200
150
150
150
90
85
85
80
75
75
70
60
60
55
50
50
45
45
45
40
40
40
40
35
35
35
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
4.0
4.0
3.0
3.0
2.5
2.5
2.5
2.0
1.5
1.5
1.5
1.3
1.3
1.0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.3
0.3
0.2
130
(3)
150
170
180
(3)
(3)
(3)
(3)
(3)
(3)
(3)
350
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
+0.04
(3)
(3)
(3)
(3)
200
215
240
255
typ. +0.1
typ. +0.1
typ. +0.1
typ. +0.1
NOTES:
(1) Tested with pulses t
p
= 5 ms.
(2) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case.
(3) at I
Z
= 2.0 mA
(4) at I
Z
= 0.5 mA
Y = Zener voltage tolerance designator
BZX79 SERIES
ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Type
Zener Voltage
range
(1)
at
I
Z
= 5 mA
V
Z
V
min.
2.20
2.50
2.80
3.10
3.40
3.70
4.00
4.40
4.80
5.20
5.80
6.40
7.00
7.70
8.50
9.40
10.40
11.40
12.40
13.80
15.30
16.80
18.80
20.80
22.80
25.10
28.00
31.00
34.00
37.00
40.00
44.00
48.00
52.00
58.00
64.00
70.00
Type
Zener Voltage
range
(1)
at
I
Z
= 5 mA
V
Z
V
min.
2.33
2.62
2.91
3.20
3.49
3.78
4.17
4.56
4.95
5.43
6.01
6.60
7.28
7.95
8.83
9.70
10.67
11.64
12.61
14.55
15.50
17.50
19.40
21.30
23.30
26.20
29.10
32.00
34.90
37.80
41.70
45.60
49.50
54.30
60.10
66.00
72.80
Type
Zener Voltage
range
(1)
at
I
Z
= 5 mA
V
Z
V
min.
2.35
2.65
2.94
3.23
3.53
3.82
4.21
4.61
5.00
5.49
6.08
6.66
7.35
8.04
8.92
9.80
10.80
11.80
12.70
14.70
15.70
17.60
19.60
21.60
23.50
26.50
29.40
32.30
35.30
38.20
42.10
46.10
50.00
54.90
60.80
66.60
73.50
±5% Tol.
BZX79 – C2V4
BZX79 – C2V7
BZX79 – C3V0
BZX79 – C3V3
BZX79 – C3V6
BZX79 – C3V9
BZX79 – C4V3
BZX79 – C4V7
BZX79 – C5V1
BZX79 – C5V6
BZX79 – C6V2
BZX79 – C6V8
BZX79 – C7V5
BZX79 – C8V2
BZX79 – C9V1
BZX79 – C10
BZX79 – C11
BZX79 – C12
BZX79 – C13
BZX79 – C15
BZX79 – C16
BZX79 – C18
BZX79 – C20
BZX79 – C22
BZX79 – C24
BZX79 – C27
BZX79 – C30
BZX79 – C33
BZX79 – C36
BZX79 – C39
BZX79 – C43
BZX79 – C47
BZX79 – C51
BZX79 – C56
BZX79 – C62
BZX79 – C68
BZX79 – C75
max.
2.60
2.90
3.20
3.50
3.80
4.10
4.60
5.00
5.40
6.00
6.60
7.20
7.90
8.70
9.60
10.60
11.60
12.70
14.10
15.60
17.10
19.10
21.20
23.30
25.60
28.90
(3)
32.00
(3)
35.00
(3)
38.00
(3)
41.00
(3)
46.00
(3)
50.00
(3)
54.00
(3)
60.00
(3)
66.00
(3)
72.00
(3)
79.00
(3)
±3% Tol.
BZX79 – F2V4
BZX79 – F2V7
BZX79 – F3V0
BZX79 – F3V3
BZX79 – F3V6
BZX79 – F3V9
BZX79 – F4V3
BZX79 – F4V7
BZX79 – F5V1
BZX79 – F5V6
BZX79 – F6V2
BZX79 – F6V8
BZX79 – F7V5
BZX79 – F8V2
BZX79 – F9V1
BZX79 – F10
BZX79 – F11
BZX79 – F12
BZX79 – F13
BZX79 – F15
BZX79 – F16
BZX79 – F18
BZX79 – F20
BZX79 – F22
BZX79 – F24
BZX79 – F27
BZX79 – F30
BZX79 – F33
BZX79 – F36
BZX79 – F39
BZX79 – F43
BZX79 – F47
BZX79 – F51
BZX79 – F56
BZX79 – F62
BZX79 – F68
BZX79 – F75
max.
2.47
2.78
3.09
3.40
3.71
4.02
4.43
4.84
5.25
5.77
6.39
7.00
7.72
8.45
9.37
10.30
11.33
12.36
13.39
15.45
16.50
18.50
20.60
22.70
24.70
27.80
(3)
30.90
(3)
34.00
(3)
37.10
(3)
40.20
(3)
44.30
(3)
48.40
(3)
52.50
(3)
57.70
(3)
63.90
(3)
70.00
(3)
77.20
(3)
±2% Tol.
BZX79 B2V4
BZX79 B2V7
BZX79B3V0
BZX79B3V3
BZX79 B3V6
BZX79B3V9
BZX79B4V3
BZX79B4V7
BZX79B5V1
BZX79 B5V6
BZX79B6V2
BZX79B6V8
BZX79B7V5
BZX79B8V2
BZX79B9V1
BZX79B10
BZX79B11
BZX79B12
BZX79B13
BZX79B15
BZX79B16
BZX79B18
BZX79B20
BZX79B22
BZX79B24
BZX79B27
BZX79B30
BZX79B33
BZX79B36
BZX79B39
BZX79B43
BZX79B47
BZX79B51
BZX79B56
BZX79B62
BZX79B68
BZX79B75
max.
2.45
2.75
3.06
3.37
3.67
3.98
4.39
4.79
5.20
5.71
6.32
6.94
7.65
8.36
9.28
10.20
11.20
12.20
13.30
15.30
16.30
18.40
20.40
22.40
24.50
27.50
(3)
30.60
(3)
33.70
(3)
)
36.70
(3)
39.80
(3)
43.90
(3)
47.90
(3)
52.00
(3)
57.10
(3)
63.20
(3)
69.40
(3)
76.50
(3)
See BZX79-y table for all characteristics other than zener voltage range.
Embedded System
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