ummsz5219bs

UNISONIC TECHNOLOGIES CO., LTD
UMMSZ52XXB
ZENER DIODE
SURFACE MOUNT SILICON
ZENER DIODE
3
1
2

1
1
2
2
SOD-323
SOD-523
FEATURES
2
1
LL-34
SYMBOL
SOD-123 / SOD-323
SOD-523 / LL34
SOT-23

SOD-123
(JEDEC TO-236)
* Low reverse leakage current

2
SOT-23
DESCRIPTION
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.

1
ORDERING INFORMATION
Ordering Number
UMMSZ52XXBG-AE3-R
UMMSZ52XXBG-CA2-R
UMMSZ52XXBG-CB2-R
UMMSZ52XXBG-CC2-R
UMMSZ52XXB-LL34-R
Note: Pin Assignment: A: Anode
K: Cathode
UMMSZ52XXBG-AE3-R
(1)Packing Type
(2)Package Type
Package
SOT-23
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
(1) R: Tape Reel
(2) AE3: SOT-23, CA2 : SOD-123, CB2: SOD-323
CC2: SOD-523, LL34: LL-34
(3)Green Package
(3) G: Halogen Free and Lead Free, L: Lead Free
(4)Output Voltage
(4) refer to ELECTRICAL CHARACTERISTICS
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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QW-R601-085.H
UMMSZ52XXB

ZENER DIODE
MARKING INFORMATION
PACKAGE
SOT-23
SOD-123
SOD-323
SOD-523
VOLTAGE CODE
3.9: 3.9V
5.1: 5.1V
5.6: 5.6V
6.2: 6 . 2 V
7.5: 7.5V
8.2: 8.2V
11: 11V
13: 13V
15:15V
16: 16V
18: 18V
20: 20V
22: 22V
27: 27V
33: 33V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MARKING
Voltage Code
XXXBG
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QW-R601-085.H
UMMSZ52XXB

ZENER DIODE
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Peak Forward Surge Current, 8.3ms Single Half
IFSM
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)
PD
mW
SOD-523
250
SOT-23
200
Operating Junction Temperature
TJ
-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 5.0mm2 (.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
(VF = 1.2V Max @ IF = 100mA for all types.)
Device
Marking
Code
UMMSZ5228B
UMMSZ5231B
UMMSZ5232B
UMMSZ5234B
UMMSZ5236B
UMMSZ5237B
UMMSZ5241B
UMMSZ5243B
UMMSZ5245B
UMMSZ5246B
UMMSZ5248B
UMMSZ5250B
UMMSZ5251B
UMMSZ5254B
UMMSZ5257B
3.9
5.1
5.6
6.2
7.5
8.2
11
13
15
16
18
20
22
27
33
Nominal Zener Voltage
VZ @ IZT (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
10.45
11
11.55
12.35
13
13.65
14.25
15
15.75
15.2
16
16.8
17.1
18
18.9
19
20
21
20.9
22
23.1
25.65
27
28.35
31.35
33
34.65
Reverse Leakage Zener
Current
Current
ZZT @ IZT
ZZK @ IZK
IR @ VR
IZM @ TA
Max (Ω) IZ(mA) Max (Ω) IZ(mA) Max (µA) @VR (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
22
20
600
0.25
2
8.4
41
13
9.5
600
0.25
1.0
9.9
35
16
8.5
600
0.25
0.5
11
30
17
7.8
600
0.25
0.1
12
28
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
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Zener Impedance
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QW-R601-085.H
UMMSZ52XXB
ZENER DIODE
TYPICAL CHARACTERISTICS
Reverse Current, IR (mA)
Forward Current, IF (mA)
Power Dissipation, PD (mW)

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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