BZT55 Series
SILICON EPITAXIAL PLANAR ZENER DIODES
Features
• Very sharp reverse characteristic
• Low reverse current level
• Available with tighter tolerances
• Very high stability
• Low noise
LS-34
Applications
• Voltage stabilization
QuadroMELF
Dimensions in mm
Absolute Maximum Ratings (T
a
= 25
O
C)
Parameter
Power Dissipation
Z-Current
Junction Temperature
Storage Temperature Range
Symbol
P
tot
I
Z
T
j
T
S
Value
500
P
tot
/ V
Z
175
- 65 to + 175
Unit
mW
mA
O
C
C
O
Characteristics at T
a
= 25
O
C
Parameter
Thermal Resistance Junction to Ambient Air
On PC board 50 mm X 50 mm X 1.6 mm
Forward Voltage
at I
F
= 100 mA
Symbol
R
thJA
V
F
Max.
500
1.5
Unit
K/W
V
SEMTECH ELECTRONICS LTD.
®
(Subsidiary
of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
Dated : 12/01/2007
BZT55 Series
Temp Coefficient
of Zener Voltage
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...0.10
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
Zener Voltage Range
Type
l
ZT
mA
BZT55C2V4
BZT55C2V7
BZT55C3V0
BZT55C3V3
BZT55C3V6
BZT55C3V9
BZT55C4V3
BZT55C4V7
BZT55C5V1
BZT55C5V6
BZT55C6V2
BZT55C6V8
BZT55C7V5
BZT55C8V2
BZT55C9V1
2)
BZT55C10
2)
BZT55C11
BZT55C12
2)
2)
1)
Dynamic Resistance
r
zjT
Ω
< 85
< 85
< 90
< 90
< 90
< 90
< 90
< 80
< 60
< 40
< 10
<8
<7
<7
< 10
< 15
< 20
< 20
< 26
< 30
< 40
< 50
< 55
< 55
< 80
< 80
< 80
< 80
< 80
< 90
< 90
< 110
< 125
< 135
< 150
< 200
< 250
r
zjK
at I
ZK
Ω
< 600
< 600
< 600
< 600
< 600
< 600
< 600
< 600
< 550
< 450
< 200
< 150
< 50
< 50
< 50
< 70
< 70
< 90
< 110
< 110
< 170
< 170
< 220
< 220
< 220
< 220
< 220
< 220
< 220
< 500
< 600
< 700
< 700
< 1000
< 1000
< 1000
< 1500
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
Reverse Leakage Current
T
a
= 25
O
C
µA
< 50
< 10
<4
<2
<2
<2
<1
< 0.5
< 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
< 0.1
T
a
= 150
O
C
µA
< 100
< 50
< 40
< 40
< 40
< 40
< 20
< 10
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<5
<5
<5
< 10
< 10
< 10
< 10
< 10
I
R
at V
R
V
1
1
1
1
1
1
1
1
1
1
2
3
5
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
for
V
ZT
V
2.28...2.56
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
5
5
5
5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
BZT55C13
2)
BZT55C15
2)
BZT55C16
2)
BZT55C18
2)
BZT55C20
2)
BZT55C22
2)
BZT55C24
2)
BZT55C27
BZT55C30
BZT55C33
2)
2)
2)
BZT55C36
2)
BZT55C39
2)
BZT55C43
2)
BZT55C47
2)
BZT55C51
2)
BZT55C56
2)
BZT55C62
2)
BZT55C68
BZT55C75
1)
2)
2)
2)
Tested with pulses tp = 20 ms.
Additional measurement of Voltage group 9V1 to 75 at 95% Vzmin
≤
35 nA
SEMTECH ELECTRONICS LTD.
®
(Subsidiary
of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
Dated : 12/01/2007
BZT55 Series
Temp Coefficient
of Zener Voltage
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...0.10
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
Zener Voltage Range
Type
l
ZT
mA
BZT55B2V4
BZT55B2V7
BZT55B3V0
BZT55B3V3
BZT55B3V6
BZT55B3V9
BZT55B4V3
BZT55B4V7
BZT55B5V1
BZT55B5V6
BZT55B6V2
BZT55B6V8
BZT55B7V5
BZT55B8V2
BZT55B9V1
2)
BZT55B10
2)
BZT55B11
BZT55B12
2)
2)
1)
Dynamic Resistance
r
zjT
Ω
< 85
< 85
< 90
< 90
< 90
< 90
< 90
< 80
< 60
< 40
< 10
<8
<7
<7
< 10
< 15
< 20
< 20
< 26
< 30
< 40
< 50
< 55
< 55
< 80
< 80
< 80
< 80
< 80
< 90
< 90
< 110
< 125
< 135
< 150
< 200
< 250
r
zjK
at I
ZK
Ω
< 600
< 600
< 600
< 600
< 600
< 600
< 600
< 600
< 550
< 450
< 200
< 150
< 50
< 50
< 50
< 70
< 70
< 90
< 110
< 110
< 170
< 170
< 220
< 220
< 220
< 220
< 220
< 220
< 220
< 500
< 600
< 700
< 700
< 1000
< 1000
< 1000
< 1500
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
Reverse Leakage Current
T
a
= 25
O
C
µA
< 50
< 10
<4
<2
<2
<2
<1
< 0.5
< 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
< 0.1
T
a
= 150
O
C
µA
< 100
< 50
< 40
< 40
< 40
< 40
< 20
< 10
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<2
<5
<5
<5
< 10
< 10
< 10
< 10
< 10
I
R
at V
R
V
1
1
1
1
1
1
1
1
1
1
2
3
5
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
for
V
ZT
V
2.35…2.45
2.64…2.76
2.94…3.06
3.24…3.36
3.52…3.68
3.82…3.98
4.22…4.38
4.6…4.8
5.0…5.2
5.48…5.72
6.08…6.32
6.66…6.94
7.35…7.65
8.04…8.36
8.92…9.28
9.8…10.2
10.78…11.22
11.76…12.24
12.74…13.26
14.7…15.3
15.7…16.3
17.64…18.36
19.6…20.4
21.55…22.45
23.5…24.5
26.4…27.6
29.4…30.6
32.4…33.6
35.3…36.7
38.2…39.8
42.1…43.9
46.1…47.9
50…52
54.9…57.1
60.8…63.2
66.6…69.4
73.5…76.5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
BZT55B13
2)
BZT55B15
2)
BZT55B16
2)
BZT55B18
2)
BZT55B20
2)
BZT55B22
2)
BZT55B24
2)
BZT55B27
BZT55B30
BZT55B33
2)
2)
2)
BZT55B36
2)
BZT55B39
2)
BZT55B43
2)
BZT55B47
2)
BZT55B51
2)
BZT55B56
2)
BZT55B62
2)
BZT55B68
BZT55B75
1)
2)
2)
2)
Tested with pulses tp = 20 ms.
Additional measurement of Voltage group 9V1 to 75 at 95% Vzmin
≤
35 nA
SEMTECH ELECTRONICS LTD.
®
(Subsidiary
of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
Dated : 12/01/2007
BZT55 Series
Total power dissipation vs.
Ambient temperature
Temperature of coefficient of Vz(10 /K)
Temperature coefficient
of Vz vs. Z-Voltage
15
-4
600
Total power dissipation, mW
10
400
5
Iz=5mA
0
200
-5
10
20
30
40
50
Vz - Z-Voltage, V
0
40
80
120
160
C
200
Ambient temperature ,
Typical change of working voltage
under operating conditions at Ta=25 C
1000
200
Capacitance vs. Z-Voltage
Vz - Voltage change , mV
150
100
Capacitance, pF
10
Tj=25 C
Iz=5mA
100
V
R
=2V
Tj=25 C
50
1
0
5
10
15
20
25
0
5
10
15
20
25
Vz - Z-Voltage, V
Vz - Z-Voltage, V
Typical change of working voltage
vs. Junction temperature
1.3
V
Ztn
=V
Zt
/V
Z
(25 C)
Forward current vs. Forward voltage
100
Tj=25 C
10
V
Ztn
- Relative voltage change
TK
VZ
=10X10
-4
/K
8X10
-4
/K
1.1
6X10
-4
/K
4X10
-4
/K
Forward current, mA
1.2
1
1.0
2X10
-4
/K
0
-2X10
-4
/K
-4X10
-4
/K
0.1
0.9
0.01
0.8
-60
0
60
120
180
C
240
Junction temperature ,
0.001
0
0.2
0.4
0.6
0.8
1.0
Forward voltage, V
SEMTECH ELECTRONICS LTD.
®
(Subsidiary
of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
Dated : 12/01/2007
BZT55 Series
Z-Current vs. Z-Voltage
100
1000
Differential Z-Resistance vs. Z-Voltage
r
z - Differential Z-Resistance,
Ptot=500mW
Ta=25 C
Tj=25 C
Iz=1mA
100
80
Iz - Z-Current, mA
60
40
5mA
10
10mA
20
0
0
4
8
12
16
20
Vz - Z-Voltage, V
1
0
5
10
15
20
Vz - Z-Voltage, V
Z-Current vs. Z-Voltage
50
Ptot=500mW
Ta=25 C
40
Iz - Z-Current, mA
30
20
10
0
15
20
25
Vz - Z-Voltage, V
30
35
Thermal Response
1000
Z
thp
- Thermal Resistance
for Pulse Cond.(K/W)
t
p
/T=0.5
100
t
p
/T=0.2
Single Pulse
10
t
p
/T=0.1
t
p
/T=0.5
t
p
/T=0.2
R
thJA
=300K/W
T=Tjmax - Tamb
t
p
/T=0.1
i
ZM
=(-Vz+(Vz
2
+4
r
zj
x T/Zthp)
1/2
)/(2
r
zj
)
1
0.1
1
10
tp - Pulse Length, ms
100
SEMTECH ELECTRONICS LTD.
®
(Subsidiary
of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
Dated : 12/01/2007
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