SYMBOL
VALUE
UNIT
Zener Current (see Table "Characteristics")
Power Dissipation at T
amb
= 25C
P
tot
500
(1)
mW
Junction Temperature
T
j
-65 to 200
C
Storage Temperature Range
T
S
-65 to + 200
C
Continuous Forward Current
I
F
250
mA
Peak reverse power dissipation (non-repetitive) t
p
=100ms,
P
ZSM
40
Watts
square wave
BZX79 SERIES
SILICON PLANAR ZENER DIODES
FEATURES
The Zener voltages are graded according to the international
E 24 standard. Higher Zener voltages and 1% tolerance
available on request.
Diodes available in these tolerance series:
2% BZX79-B
3% BZX79-F
5% BZX79-C
MECHANICAL DATA
Case: DO-35 Glass Case
Weight: approx. 0.13 g
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25C ambient temperature 8unless otherwise specified
12/10/98
mi
n. 1.083 (
27.5)
mi
n. 1.083
(
2
7
.
5)
max
. .
150 (
3.8)
max.
Cathode
.020 (0.52)
Mark
max.
.079 (2.0)
Dimensions in inches and (millimeters)
DO-35
Characteristics at Tamb = 25C
SYMBOL
MIN. TYP.
MAX.
UNIT
Thermal Resistance
R
thJA
0.3
(1)
C/W
Junction to Ambient Air
Forward Voltage
V
F
0.9
Volts
at I
F
= 10 mA
NOTES:
(1) Valid provided that leads are kept at ambient temperature at a distance of 8mm from case.
BZX79 y2V4
100
< 600
0.08
0.06
50,000
1
167
450
6.0
BZX79 y2V7
100
< 600
0.08
0.06
20,000
1
135
450
6.0
BZX79 y3V0
95
< 600
0.08
0.06
10,000
1
125
450
6.0
BZX79 y3V3
95
< 600
0.08
0.05
5,000
1
115
450
6.0
BZX79 y3V6
90
< 600
0.08
0.04
5,000
1
105
450
6.0
BZX79 y3V9
90
< 600
0.07
0.03
3,000
1
95
450
6.0
BZX79 y4V3
90
< 600
0.04
0.01
3,000
1
90
450
6.0
BZX79 y4V7
80
500
0.03
+0.01
3,000
1
85
300
6.0
BZX79 y5V1
60
480
0.02
+0.05
2,000
1
80
300
6.0
BZX79 y5V6
40
400
0.01
+0.06
1,000
1
70
300
6.0
BZX79 y6V2
10
150
0
+0.07
3,000
2
64
200
6.0
BZX79 y6V8
15
80
+0.01
+0.08
2,000
3
58
200
6.0
BZX79 y7V5
15
80
+0.01
+0.09
1,000
5
53
150
4.0
BZX79 y8V2
15
80
+0.01
+0.09
700
6
47
150
4.0
BZX79 y9V1
15
100
+0.02
+0.10
500
7
43
150
3.0
BZX79 y10
20
150
+0.03
+0.11
200
7.5
40
90
3.0
BZX79 y11
20
150
+0.03
+0.11
100
8.5
36
85
2.5
BZX79 y12
25
150
+0.03
+0.11
100
9
32
85
2.5
BZX79 y13
30
170
+0.03
+0.11
100
10
29
80
2.5
BZX79 y15
30
200
+0.03
+0.11
50
11
27
75
2.0
BZX79 y16
40
200
+0.03
+0.11
50
12
24
75
1.5
BZX79 y18
45
225
+0.03
+0.11
50
14
21
70
1.5
BZX79 y20
55
225
+0.03
+0.11
50
15
20
60
1.5
BZX79 y22
55
250
+0.03
+0.11
50
17
18
60
1.3
BZX79 y24
70
250
+0.04
+0.12
50
18
16
55
1.3
BZX79 y27
80
(3)
300
(4)
+0.04
(3)
+0.12
50
20
14
50
1.0
BZX79 y30
80
(3)
300
(4)
+0.04
(3)
+0.12
50
22
13
50
1.0
BZX79 x33
80
(3)
325
(4)
+0.04
(3)
+0.12
50
24
12
45
0.9
BZX79 x36
90
(3)
350
(4)
+0.04
(3)
+0.12
50
27
11
45
0.8
BZX79 x39
130
(3)
350
(4)
+0.04
(3)
+0.12
50
28
10
45
0.7
BZX79 x43
150
(3)
375
(4)
+0.04
(3)
+0.12
50
32
9.2
40
0.6
BZX79 x47
170
(3)
375
(4)
+0.04
(3)
+0.12
50
35
8.5
40
0.5
BZX79 x51
180
(3)
400
(4)
+0.04
(3)
+0.12
50
38
7.8
40
0.4
BZX79 x56
200
(3)
425
(4)
typ. +0.1
(3)
50
39
7.1
40
0.3
BZX79 x62
215
(3)
450
(4)
typ. +0.1
(3)
50
43
6.4
35
0.3
BZX79 x68
240
(3)
475
(4)
typ. +0.1
(3)
50
48
5.8
35
0.3
BZX79 x75
255
(3)
500
(4)
typ. +0.1
(3)
50
53
5.3
35
0.2
BZX79 SERIES
ELECTRICAL CHARACTERISTICS
Ratings at 25C ambient temperature unless otherwise specified.
Type
y = B for 2%V
Z
y = F for 3%V
Z
y = C for 5%V
Z
Dynamic resistance
at
at
I
Z
= 5 mA
I
Z
= 1 mA
f = 1 kH
Z
f = 1 kH
Z
r
zj
r
zj
max.
max
Temp coefficient
of Zener Voltage
at
I
Z
= 5 mA
m
VZ
%/K
min.
max.
Admissible
Zener
current
(2)
I
Z
(mA)
Capacitance
V
R
=0
f=1 MH
Z
(pF)
max.
Non-Repetitive
Peak Reverse
Currrent
at t
p
= 100
s
I
ZSM
(A)
Reverse leakage
Current
I
R
at V
R
nA
V
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 C2V4
2.20
2.60
BZX79 C2V7
2.50
2.90
BZX79 C3V0
2.80
3.20
BZX79 C3V3
3.10
3.50
BZX79 C3V6
3.40
3.80
BZX79 C3V9
3.70
4.10
BZX79 C4V3
4.00
4.60
BZX79 C4V7
4.40
5.00
BZX79 C5V1
4.80
5.40
BZX79 C5V6
5.20
6.00
BZX79 C6V2
5.80
6.60
BZX79 C6V8
6.40
7.20
BZX79 C7V5
7.00
7.90
BZX79 C8V2
7.70
8.70
BZX79 C9V1
8.50
9.60
BZX79 C10
9.40
10.60
BZX79 C11
10.40
11.60
BZX79 C12
11.40
12.70
BZX79 C13
12.40
14.10
BZX79 C15
13.80
15.60
BZX79 C16
15.30
17.10
BZX79 C18
16.80
19.10
BZX79 C20
18.80
21.20
BZX79 C22
20.80
23.30
BZX79 C24
22.80
25.60
BZX79 C27
25.10
28.90
(3)
BZX79 C30
28.00
32.00
(3)
BZX79 C33
31.00
35.00
(3)
BZX79 C36
34.00
38.00
(3)
BZX79 C39
37.00
41.00
(3)
BZX79 C43
40.00
46.00
(3)
BZX79 C47
44.00
50.00
(3)
BZX79 C51
48.00
54.00
(3)
BZX79 C56
52.00
60.00
(3)
BZX79 C62
58.00
66.00
(3)
BZX79 C68
64.00
72.00
(3)
BZX79 C75
70.00
79.00
(3)
BZX79 F2V4
2.33
2.47
BZX79 F2V7
2.62
2.78
BZX79 F3V0
2.91
3.09
BZX79 F3V3
3.20
3.40
BZX79 F3V6
3.49
3.71
BZX79 F3V9
3.78
4.02
BZX79 F4V3
4.17
4.43
BZX79 F4V7
4.56
4.84
BZX79 F5V1
4.95
5.25
BZX79 F5V6
5.43
5.77
BZX79 F6V2
6.01
6.39
BZX79 F6V8
6.60
7.00
BZX79 F7V5
7.28
7.72
BZX79 F8V2
7.95
8.45
BZX79 F9V1
8.83
9.37
BZX79 F10
9.70
10.30
BZX79 F11
10.67
11.33
BZX79 F12
11.64
12.36
BZX79 F13
12.61
13.39
BZX79 F15
14.55
15.45
BZX79 F16
15.50
16.50
BZX79 F18
17.50
18.50
BZX79 F20
19.40
20.60
BZX79 F22
21.30
22.70
BZX79 F24
23.30
24.70
BZX79 F27
26.20
27.80
(3)
BZX79 F30
29.10
30.90
(3)
BZX79 F33
32.00
34.00
(3)
BZX79 F36
34.90
37.10
(3)
BZX79 F39
37.80
40.20
(3)
BZX79 F43
41.70
44.30
(3)
BZX79 F47
45.60
48.40
(3)
BZX79 F51
49.50
52.50
(3)
BZX79 F56
54.30
57.70
(3)
BZX79 F62
60.10
63.90
(3)
BZX79 F68
66.00
70.00
(3)
BZX79 F75
72.80
77.20
(3)
BZX79 B2V4
2.35
2.45
BZX79 B2V7
2.65
2.75
BZX79B3V0
2.94
3.06
BZX79B3V3
3.23
3.37
BZX79 B3V6
3.53
3.67
BZX79B3V9
3.82
3.98
BZX79B4V3
4.21
4.39
BZX79B4V7
4.61
4.79
BZX79B5V1
5.00
5.20
BZX79 B5V6
5.49
5.71
BZX79B6V2
6.08
6.32
BZX79B6V8
6.66
6.94
BZX79B7V5
7.35
7.65
BZX79B8V2
8.04
8.36
BZX79B9V1
8.92
9.28
BZX79B10
9.80
10.20
BZX79B11
10.80
11.20
BZX79B12
11.80
12.20
BZX79B13
12.70
13.30
BZX79B15
14.70
15.30
BZX79B16
15.70
16.30
BZX79B18
17.60
18.40
BZX79B20
19.60
20.40
BZX79B22
21.60
22.40
BZX79B24
23.50
24.50
BZX79B27
26.50
27.50
(3)
BZX79B30
29.40
30.60
(3)
BZX79B33
32.30
33.70
(3)
)
BZX79B36
35.30
36.70
(3)
BZX79B39
38.20
39.80
(3)
BZX79B43
42.10
43.90
(3)
BZX79B47
46.10
47.90
(3)
BZX79B51
50.00
52.00
(3)
BZX79B56
54.90
57.10
(3)
BZX79B62
60.80
63.20
(3)
BZX79B68
66.60
69.40
(3)
BZX79B75
73.50
76.50
(3)
BZX79 SERIES
ELECTRICAL CHARACTERISTICS
Ratings at 25C ambient temperature unless otherwise specified.
Type
Zener Voltage
range
(1)
at
I
Z
= 5 mA
V
Z
V
5% Tol.
min.
max.
Type
Zener Voltage
range
(1)
at
I
Z
= 5 mA
V
Z
V
3% Tol.
min.
max.
Type
Zener Voltage
range
(1)
at
I
Z
= 5 mA
V
Z
V
2% Tol.
min.
max.
See BZX79-y table for all characteristics other than zener voltage range.
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