EDZ Series
Diodes
Zener diode
EDZ Series
!Applications
Constant voltage control
!Features
1) Extremely compact, 2-pin mini-mold type for high-
density mounting (EMD2).
2) Can be mounted automatically,using chip mounter.
3) High reliability.
!Construction
Silicon epitaxial planar
!External dimensions
(Units : mm)
ROHM : EMD2
EIAJ : SC-79
JEDEC : SOD-523
0.12
0.05
0.3
0.05
0.8
0.05
0.6
0.1
Type No. and date of manufacture stamped on body in digital marking.
1.6
0.1
1.2
0.05
CATHODE MARK
!Absolute maximum ratings
(Ta = 25
C)
Parameter
100
125
-
55 ~
+
125
-
55 ~
+
125
mW
P
Tj
Tstg
Topr
Symbol
Limits
Unit
C
C
C
Power dissipation
Junction temperature
Storage temperature
Operating temperature
!Markings
(Type No.)
Product name
Type No.
EDZ4.7B
2
A
EDZ5.1B
2
C
EDZ5.6B
2
E
EDZ6.2B
EDZ6.8B
2
2
F
9
2
(Ex.) EDZ4.7B
9
EDZ Series
Diodes
!Electrical characteristics
(Ta = 25
C)
Type
Min.
Max.
Max.
I
Z
(mA)
I
Z
(mA)
Max.
V
R
(V)
Max.
I
Z
(mA)
Zener voltage
V
Z
(V)
Operating resistance
Z
Z
(
)
Rising operating resistance
Z
Zk
(
)
Reverse current
I
R
(
A)
EDZ4.7B
4.550
4.750
800
2
1.0
5
100
5
0.5
EDZ5.1B
4.980
5.200
500
2
1.5
5
80
5
0.5
EDZ5.6B
5.490
5.730
200
1
2.5
5
60
5
0.5
EDZ6.2B
6.060
6.330
100
1.0
3.0
5
60
5
0.5
EDZ6.8B
6.650
6.930
60
0.5
3.5
5
40
5
0.5
Notes) 1. The Zener voltage (V
z
) is measured 40ms after power is supplied.
2. The operating resistances (Z
z
, Z
zk
) are measured by superimposing a minute alternating current on the regulated current (I
z
).
!Electrical characteristic curves
(Ta = 25
C)
1
3
5
7
1
10
100
1m
10m
100m
100n
ZENER CURRENT : Iz (A)
ZENER VOLTAGE : Vz (V)
Fig. 1 Zener characteristics
2
4
6
4.7B 5.1B 5.6B
6.2B
6.8B
200
100
50
0
0
50
25
100
150
PO
WER DISSIP
A
TION :
Pd (mW)
AMBIENT TEMPERATURE : Ta (
C)
Fig. 2 Derating curve
1
10
0
10
100
CAPACITANCE BETWEEN TERMINALS : C
T
(P
F
)
REVERSE VOLTAGE : V
R
(V)
Fig. 3 Capacitance between
terminal characteristics
6.8B
6.2B
5.6B
5.1B
4.7B
-
0.08
-
0.06
-
0.04
-
0.02
0.00
0.02
0.04
0.06
0.08
0.10
0.12
TEMP
.
COEFFICIENT CHARA
CTERISTICS (% /
C)
ZENER VOLTAGE : Vz (V)
EDZ series : Vz=4.7V
6.8V
Fig. 4 Zener voltage-temp.
coefficient chracteristics
Iz=500
A
Iz=5mA
32
28
24
20
12
16
8
4
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