UMZ6.8EN
Diodes
Zener diode
UMZ6.8EN
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Applications
Constant voltage control
For the ESD measure of a signal line
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Features
1) Small surface mounting type. (UMD5)
2) Composite type with four athode common elements
3) High reliability
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Construction
Silicon epitaxial planar
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External dimensions (Units : mm)
0~0.1
0.1Min.
2.10.1
1.250.1
0.90.1
0.7
0.150.05
0.2
2.00.2
1.30.1
0.65 0.65
+
0.5
-
0.05
D 6 F
Each lead has same dimensions
ROHM : UMD5
EIAJ : SC-88A
JEDEC : SOT-353
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Absolute maximum ratings (Ta=25
C) !
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Equivalent circuit
Parameter
Symbol
Limits
Unit
Power dissipation
200
mW
Junction temperature
150
C
Storage temperature
C
Tj
Tstg
-
55~
+
150
P
Total of 4 elements
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Electrical characteristics (Ta=25
C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Zener voltage
V
Z
6.47
7.14
V
I
Z
=
5mA
Reverse current
I
R
-
-
0.5
V
R
=
3.5V
Operating resistance
Z
Z
-
-
40
I
Z
=
5mA
Capacitance between terminals
C
T
-
9
-
pF
f
=
1MHz, V
R
=
5V
A
-
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Others
Parameter
IEC61000-4-2
Device configuration
Judgment contents
: 150pF
Charge / discharge capacitance
: 330
Discharge resistance
10 repetitions
No malfunction
:
8kV
Contact
:
15kV
Suspended
UMZ6.8EN
Diodes
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Electrical characteristic curves (Ta=25
C)
5
6
7
8
1
10
100
1m
10m
100n
ZENER CURRENT : Iz (A)
ZENER VOLTAGE : Vz (V)
Fig.1 Zener voltage characteristic
-
25
C 25
C 75
C 125
C
0.01
0.1
1
10
10
1
100
DYNAMIC IMPEADANCE : Zz (
)
ZENER CURRENT : Iz (mA)
Fig.2 Operating resistance
Zener current characteristic
0
0
25
50
100
150
100
200
300
POWER DISSIPATION : Pd (mW)
AMBIENT TEMPERATURE : Ta (
C)
Fig.3 Derating curve
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