UDZ Series
Diodes
Zener diode
UDZ Series
!
Applications
Constant voltage control
!
External dimensions
(Units : mm)
CATHODE MARK
2.5±0.2
!Features
1) Compact, 2-pin mini-mold type for high-density
mounting. (UMD2)
2) Compatible with chip mounter for automated
production.
3) High reliability
1.7±0.1
0.3±0.05
1.25±0.1
0.7
+0.2
−0.1
0.1
+0.1
−0.05
(All pins have the same dimensions.)
∗
Type No. and date of manufacture stamped on body in digital marking.
ROHM : UMD2
EIAJ : SC-76
JEDEC : SOD-323
!Construction
Silicon epitaxial planar
!
Absolute maximum ratings
(Ta=25°C)
Parameter
Power dissipation
Junction temperature
Storage temperature
Operating temperature
Symbol
P
Tj
Tstg
Topr
Limits
200
150
−55∼+150
−55∼+150
Unit
mW
˚C
˚C
˚C
!
Markings
(Type No.)
Product name
UDZ 2.0B
UDZ 2.2B
UDZ 2.4B
UDZ 2.7B
UDZ 3.0B
UDZ 3.3B
UDZ 3.6B
UDZ 3.9B
UDZ 4.3B
UDZ 4.7B
UDZ 5.1B
(Ex.) UDZ 2.0B
0
2
Type No.
0
1
2
3
4
5
6
7
8
9
A
2
2
2
2
2
2
2
2
2
2
2
Product name
UDZ 5.6B
UDZ 6.2B
UDZ 6.8B
UDZ 7.5B
UDZ 8.2B
UDZ 9.1B
UDZ 10B
UDZ 11B
UDZ 12B
UDZ 13B
UDZ 15B
Type No.
C
E
F
H
J
L
0
1
2
3
4
2
2
2
2
2
2
5
5
5
5
5
Product name
UDZ 16B
UDZ 18B
UDZ 20B
UDZ 22B
UDZ 24B
UDZ 27B
UDZ 30B
UDZ 33B
UDZ 36B
Type No.
5
6
7
8
9
A
C
E
F
5
5
5
5
5
5
5
5
5
UDZ Series
Diodes
!
Electrical characteristics
(Ta=25°C)
Zener voltage subdivision
Type
Min.
UDZ 2.0B
UDZ 2.2B
UDZ 2.4B
UDZ 2.7B
UDZ 3.0B
UDZ 3.3B
UDZ 3.6B
UDZ 3.9B
UDZ 4.3B
UDZ 4.7B
UDZ 5.1B
UDZ 5.6B
UDZ 6.2B
UDZ 6.8B
UDZ 7.5B
UDZ 8.2B
UDZ 9.1B
UDZ 10B
UDZ 11B
UDZ 12B
UDZ 13B
UDZ 15B
UDZ 16B
UDZ 18B
UDZ 20B
UDZ 22B
UDZ 24B
UDZ 27B
UDZ 30B
UDZ 33B
UDZ 36B
2.020
2.220
2.430
2.690
3.010
3.320
3.600
3.890
4.170
4.550
4.980
5.490
6.060
6.650
7.280
8.020
8.850
9.770
10.760
11.740
12.910
14.340
15.850
17.560
19.520
21.540
23.720
26.190
29.190
32.150
35.070
V
Z
(V)
Max.
2.200
2.410
2.630
2.910
3.220
3.530
3.845
4.160
4.430
4.750
5.200
5.730
6.330
6.930
7.600
8.360
9.230
10.210
11.220
12.240
13.490
14.980
16.510
18.350
20.390
22.470
24.780
27.530
30.690
33.790
36.870
I
Z
(mA)
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
5
Operating
resistance
Z
Z
(Ω)
Max.
100
100
100
110
120
120
100
100
100
100
80
60
60
40
30
30
30
30
30
30
37
42
50
65
85
100
120
150
200
250
300
I
Z
(mA)
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
5
Rising operating
resistance
Z
zk
(Ω)
Max.
1000
1000
1000
1000
1000
1000
1000
1000
1000
800
500
200
100
60
60
60
60
60
60
80
80
80
80
80
100
100
120
150
200
250
300
I
Z
(mA)
0.5
0.5
0.5
0.5
0.5
0.5
1.0
1.0
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
Reverse current
I
R
(µA)
Max.
120
120
120
100
50
20
10
5
5
2
2
1
1
0.5
0.5
0.5
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
V
R
(V)
0.5
0.7
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.5
2.5
3.0
3.5
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
15.0
17.0
19.0
21.0
23.0
25.0
27.0
1. The Zener voltage (V
z
) is measured 40 ms 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
).
UDZ Series
Diodes
!
Electrical characteristic curves
(Ta=25°C)
5.1
5.6
100m
6.2
6.8
8.2
9.1
7.5
15
11
10
12
13
16
18
20
20
10m
1m
ZENER CURRENT : I
Z
(A)
100µ
10µ
1µ
100n
4.7
2.4
10n
0
2.0
2.2
2.7
5
3.0
3.3
4.3
10
15
22
25
30
35
40
ZENER VOLTAGE : V
Z
(V)
Fig.1 Zener voltage characteristics
300
POWER DISSIPATION : Pd (mW)
TEMP. COEFFICIENT CHARACTERISTICS (% / ˚C)
0.10
Iz=5mA
0.08
0.06
0.04
0.02
0.00
−0.02
−0.04
−0.06
−0.08
2
10
20
Iz=500µA
200
30
100
ZENER VOLTAGE : Vz (V)
0
0
25
50
100
150
AMBIENT TEMPERATURE : Ta (˚C)
Fig.2 Derating curve
Fig.3 Zener voltage -
temp.coefficient characteristics
Microcontroller MCU
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