UNISONIC TECHNOLOGIES CO., LTD
UMMSZ52XXB
Preliminary
3
2
2
1
1
SOD-123
ZENER DIODE
SURFACE MOUNT SILICON
ZENER DIODE
DESCRIPTION
SOT-23-3
(JEDEC TO-236)
The UTC
UMMSZ52XXB
is a surface mount silicon zener diode,
it uses UTC’s advanced technology to provide customers with low
reverse leakage current, etc.
The UTC
UMMSZ52XXB
is suitable for automated assembly
processes.
2
1
SOD-323
2
1
LL-34
1
2
SOD-523
FEATURES
* Low reverse leakage current
SYMBOL
SOT-23-3
SOD-123/SOD-323
SOD-523/LL34
ORDERING INFORMATION
Ordering Number
Package
SOT-23-3
SOD-123
SOD-323
SOD-523
LL-34
Pin Assignment
1
2
3
NC
A
K
A
K
-
A
K
-
A
K
-
A
K
-
Packing
Tape Reel
Tape Reel
Tape Reel
Tape Reel
Tape Reel
Lead Free
Halogen Free
UMMSZ52XXBL-AE2-R
UMMSZ52XXBG-AE2-R
UMMSZ52XXBL-CA2-R
UMMSZ52XXBG-CA2-R
UMMSZ52XXBL-CB2-R
UMMSZ52XXBG-CB2-R
UMMSZ52XXBL-CC2-R
UMMSZ52XXBG-CC2-R
UMMSZ52XXBL-LL34-R
UMMSZ52XXBG-LL34-R
Note: Pin Assignment: A: Anode, K: Cathode
UMMSZ52XXBL-AE2-R
(1)Packing Type
(2)Package Type
(3)Lead Free
(4)Output Voltage
(1) R: Tape Reel
(2) AE2: SOT-23-3, CA2 : SOD-123, CB2: SOD-323
CC2: SOD-523, LL34: LL-34
(3) L: Lead Free, G: Halogen Free
(4) refer to ELECTRICAL CHARACTERISTICS
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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MARKING INFORMATION
PACKAGE
SOT-23-3
VOLTAGE CODE
3.9: 3.9V
5.1: 5.1V
6.2: 6 . 2 V
8.2: 8.2V
15:15V
18: 18V
20: 20V
22: 22V
33:33V
Preliminary
ZENER DIODE
MARKING
XXXB
L: Lead Free
G: Halogen Free
Voltage Code
SOD-123
SOD-323
SOD-523
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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ABSOLUTE MAXIMUM RATINGS
Preliminary
ZENER DIODE
PARAMETER
SYMBOL
RATINGS
UNIT
Peak Forward Surge Current, 8.3ms Single Half
I
FSM
4.0
A
Sine-Wave Superimposed on Rated Load (Note 2)
SOD-123/LL-34
500
SOD-323
330
Power Dissipation at 75°C (Note 1)
P
D
mW
SOD-523
250
SOT-23-3
200
Operating Junction Temperature
T
J
-55~+150
°C
Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. Mounted on 5.0mm
2
(.013mm thick) land areas.
3. Measured on 8.3ms, single half sine-wave or equivalent square wave, duty cycle=4 pulses per minute
maximum.
ELECTRICAL CHARACTERISTICS
Reverse Leakage Zener
Current
Current
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
I
R
@ V
R
I
ZM
@ T
A
Max (Ω) I
Z
(mA) Max (Ω) I
Z
(mA) Max (µA) @V
R
(V)
mA
23
20
1900
0.25
10
1.0
115
17
20
1600
0.25
5.0
2.0
89
11
20
1600
0.25
5.0
3.0
81
7
20
1000
0.25
5.0
4.0
73
6.0
20
500
0.25
3.0
6.0
61
8
20
500
0.25
3.0
6.0
55
13
9.5
600
0.25
1.0
9.9
35
16
8.5
600
0.25
0.5
11
30
21
7
600
0.25
0.1
14
25
25
6.2
600
0.25
0.1
15
23
29
5.6
600
0.25
0.1
17
21
41
5
600
0.25
0.1
21
16.8
58
3.8
700
0.25
0.1
25
13.8
Zener Impedance
(V
F
= 1.2V Max @ I
F
= 100mA for all types.)
Device
UMMSZ5228B
UMMSZ5231B
UMMSZ5232B
UMMSZ5234B
UMMSZ5236B
UMMSZ5237B
UMMSZ5243B
UMMSZ5245B
UMMSZ5248B
UMMSZ5250B
UMMSZ5251B
UMMSZ5254B
UMMSZ5257B
Marking
Code
3.9
5.1
5.6
6.2
7.5
8.2
13
15
18
20
22
27
33
Nominal Zener Voltage
V
Z
@ I
ZT
(V)
MIN
TYP MAX
3.71
3.9
4.1
4.85
5.1
5.36
5.32
5.6
5.88
5.89
6.2
6.51
7.13
7.5
7.88
7.79
8.2
8.61
12.35
13
13.65
14.25
15
15.75
17.1
18
18.9
19
20
21
20.9
22
23.1
25.65
27
28.35
31.35
33
34.65
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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Preliminary
ZENER DIODE
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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