Datasheet

UNISONIC TECHNOLOGIES CO., LTD
ESD3V3S2B
Preliminary
TVS DIODE
ULTRA LOW CLAMPING
BI-DIRECTIONAL ESD
TRANSIENT PROTECTION
DIODE

DESCRIPTION
The UTC ESD3V3S2B is ultra-low clamping ESD transient
bidirectional protection diode, it uses UTC’s advanced technology to
provide customers with low leakage current and high integration, etc.
The UTC ESD3V3S2B is suitable for ESD protection and high
density boards.

FEATURES
* Bi-directional, symmetrical working voltage
* Ultra low clamping voltage
* Ultra low dynamic resistance

SYMBOL

ORDERING INFORMATION
Ordering Number
ESD3V3S2BG-AL3-R
Note: Pin Assignment: A: Anode K: Cathode

Package
SOT-323
Pin Assignment
1
2
3
K
K
K
Packing
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
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ESD3V3S2B

Preliminary
TVS DIODE
ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
30
kV
ESD Discharge IEC61000-4-2
VESD
8
kV
Peak Pulse current (tP=8/20 µs)
IPP
8
A
Operating Junction Temperature
TJ
125
°C
Operating Temperature (Note 2)
TOPR
-40 ~ +125
°C
Storage Temperature
TSTG
-55 ~ +150
°C
Note: 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.
Air Discharge
Contact Discharge

ELECTRICAL CHARACTERISTICS (TA=25°C, unless otherwise specified)
PARAMETER
Reverse working voltage
Reverse current
Line capacitance
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
VRMW
-3.3
3.3
V
IR
VR=3.3V
50
nA
CL
VR=0V. f=1MHz
11
20
pF
IPP=16A, tP=100ns
7
V
IPP=30A, tP=100ns
9
V
Clamping voltage
VCL
IPP=-1A, tP=8/20 µs
4.5
V
6.8
V
IPP=8A, tP=8/20 µs
Dynamic resistance (Note 1)
RDYN
0.13
Ω
Note: Z0=50Ω, tP=100ns, tR=300ps, averaging window: t1=30ns to t2=60ns, extraction of dynamic resistance using
least squares fit of TLP charactertistics between IPP1=10A and IPP2=40A.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R229-005 .a
ESD3V3S2B
Preliminary
TVS 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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QW-R229-005 .a
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