Datasheet

UNISONIC TECHNOLOGIES CO., LTD
SMDJXXX
TVS
SURFACE MOUNT TRANSIENT
VOLTAGE SUPPRESSORS

DESCRIPTION
The UTC SMDJXXX is a surface mount transient voltage
supperssors, it uses UTC’s advanced technology to provide
customers with low leakage and very fast response time, etc.
+
SMC

(JEDEC DO-214AB)
FEATURES
* Excellent clamping capability
* Low leakage
* Very fast response time

SYMBOL

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
SMDJXXXL-SMC-R
SMDJXXXG-SMC-R
Note: Pin Assignment: K: Cathode A: Anode
SMDJXXXL-SMC-R
(1)Packing Type
(2)Package Type
(3)Halogen Free
(4)Category
(5)Output Voltage Code

Package
SMC
Pin Assignment
1
2
K
A
Packing
Tape Reel
(1) R: Tape Reel
(2) SMC: SMC
(3) L: Lead Free, G: Halogen Free
(4) A: 5% uni-directional
(5) xx: refer to ELECTRICAL CHARACTERISTICS
MARKING
Cathode Band for
uni-directional Only
UTC
SMDJXXX
Date Code
Category
Voltage Code
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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SMDJXXX

TVS
ABSOLUTE MAXIMUM RATING (TA=25°C unless otherwise noted)
PARAMETER
SYMBOL
Peak Power Dissipation with a 10/1000μs Waveform (Note 2)
PPP
Peak Pulse Current with a 10/1000μs Waveform (Note 2)
IPP
RATINGS
3000
See ELECTRICAL
CHARACTERISTICS Table
6.0
UNIT
W
A
Power Dissipation On Infinite Heatsink at TL= 75°C
PD
W
Peak Forward Surge Current, 8.3 ms Single Half Sine-wave
IFSM
300
A
Unidirectional Only (Note 3)
Maximum Instantaneous Forward Voltage at 50 A for
VF
3.5/5.0
V
Unidirectional Only (Note 4)
Operating Junction Temperature
TJ
-55~+150
°C
Storage Temperature
TSTG
-55~+150
°C
Notes: 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. Non-repetitive current pulse and derated above TA=25°C
3. Measured on 8.3ms single half sine-wave or equivalent square wave, duty cycle=4 pulses per minute
maximum.
4. VF<3.5V for devices of VBR<200V and VF<5.0V for devices of VBR>201V.

ELECTRICAL CHARACTERISTICS (TA =25°C, unless otherwise noted)
BREAKDOWN VOLTAGE
VBR @ IT
PART NUMBER (Uni)
SMDJ24A
SMDJ28A
SMDJ33A
MIN (V)
MAX (V)
IT (mA)
26.70
31.10
36.70
29.50
34.40
40.60
5
5
5
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MAXIMUM WORKING
REVERSE
PEAK
LEAKAGE IR REVERSE
VOLTAGE
@ VRWM
VRWM (V)
(µA)
2
2
2
24.0
28.0
33.0
MAXIMUM
REVERSE
SURGE
CURRENT
IPP
(A)
77.12
66.08
56.29
MAXIMUM
CLAMPING
VOLTAGE
VC @ IPP
(V)
38.9
45
53.3
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SMDJXXX
Peak Forward Surge Current (A)
Fig 4. Peak Pulse Power Rating Curve
Fig 3. Steady State Power Derating Curve
6.0
100
5.0
Peak Power (kW)
Steady State Power Dissipation (W)
Peak Pulse Derating in Percentage of
Peak Power or Current (%)
TYPICAL CHARACTERISTICS (TA =25°C, unless otherwise noted)
4.0
3.0
2.0
10
1
1.0
0
0
25 50 75 100 125 150 175 200
Lead Temperature, TL (°C)
0.1
0.1
1
100
1000 10000
10
Pulse Width, td (µs)
Peak Pulse Current (% )

TVS
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R229-003.C
SMDJXXX
TVS
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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