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Partno Mfg Dc Qty AvailableDescript
SMAJ100A-TR |SMAJ100ATRSTN/a63800avaiTRANSIL
SMAJ100CA-TR |SMAJ100CATRSTN/a63800avaiTRANSIL
SMAJ10A-TR |SMAJ10ATRSTN/a65400avaiTRANSIL
SMAJ10CA-TR |SMAJ10CATRST N/a65400avaiTRANSIL
SMAJ12A-TR |SMAJ12ATRSTN/a65400avaiTRANSIL
SMAJ12CA-TR |SMAJ12CATRSTN/a65400avaiTRANSIL
SMAJ130A-TR |SMAJ130ATRSTN/a63800avaiTRANSIL
SMAJ130CA-TR |SMAJ130CATRSTN/a63800avaiTRANSIL
SMAJ13A-TR |SMAJ13ATRSTN/a55000avaiTRANSIL
SMAJ13CA-TR |SMAJ13CATRST N/a65400avaiTRANSIL
SMAJ15A-TR |SMAJ15ATRSTN/a65400avaiTRANSIL
SMAJ15CA-TR |SMAJ15CATRSTMN/a1172avaiTRANSIL
SMAJ170A-TR |SMAJ170ATRSTN/a63800avaiTRANSIL
SMAJ170CA-TR |SMAJ170CATRSTN/a63800avaiTRANSIL
SMAJ188A-TR |SMAJ188ATRSTN/a63800avaiTRANSIL
SMAJ188CA-TR |SMAJ188CATRSTN/a63800avaiTRANSIL
SMAJ18A-TR |SMAJ18ATRSTN/a82500avaiTRANSIL
SMAJ18CA-TR |SMAJ18CATRSTN/a82500avaiTRANSIL
SMAJ20A-TR |SMAJ20ATRSTN/a82500avaiTRANSIL
SMAJ20CA-TR |SMAJ20CATRST N/a82500avaiTRANSIL
SMAJ22A-TR |SMAJ22ATRSTN/a82500avaiTRANSIL
SMAJ22CA-TR |SMAJ22CATRST N/a82500avaiTRANSIL
SMAJ24A-TR |SMAJ24ATRSTN/a82500avaiTRANSIL
SMAJ24CA-TR |SMAJ24CATRSTN/a82500avaiTRANSIL
SMAJ26A-TR |SMAJ26ATRST N/a82500avaiTRANSIL
SMAJ26CA-TR |SMAJ26CATRST N/a82500avaiTRANSIL
SMAJ28A-TR |SMAJ28ATRSTN/a82500avaiTRANSIL
SMAJ28CA-TR |SMAJ28CATRSTN/a82500avaiTRANSIL
SMAJ30A-TR |SMAJ30ATRSTN/a90000avaiTRANSIL
SMAJ30CA-TR |SMAJ30CATRSTN/a82500avaiTRANSIL
SMAJ33A-TR |SMAJ33ATRSTN/a55000avaiTRANSIL
SMAJ33CA-TR |SMAJ33CATRSTN/a55000avaiTRANSIL
SMAJ40A-TR |SMAJ40ATRSTN/a82500avaiTRANSIL
SMAJ40CA-TR |SMAJ40CATRSTMN/a10000avaiTRANSIL
SMAJ40CA-TR |SMAJ40CATRSTN/a82500avaiTRANSIL
SMAJ40CA-TR |SMAJ40CATRST,STN/a10000avaiTRANSIL
SMAJ43A-TR |SMAJ43ATRST N/a82500avaiTRANSIL
SMAJ43CA-TR |SMAJ43CATRSTN/a82500avaiTRANSIL
SMAJ48A-TR |SMAJ48ATRST N/a82500avaiTRANSIL
SMAJ48CA-TR |SMAJ48CATRSTN/a82500avaiTRANSIL
SMAJ5.0A-TR |SMAJ50ATRSTN/a65400avaiTRANSIL
SMAJ5.0CA-TR |SMAJ50CATRweitronN/a5000avaiTRANSIL
SMAJ5.0CA-TR |SMAJ50CATRSTN/a55000avaiTRANSIL
SMAJ58A-TR |SMAJ58ATRSTN/a55000avaiTRANSIL
SMAJ58CA-TR |SMAJ58CATRSTN/a82500avaiTRANSIL
SMAJ6.0A-TR |SMAJ60ATRST N/a65400avaiTRANSIL
SMAJ6.0CA-TR |SMAJ60CATRSTN/a65400avaiTRANSIL
SMAJ6.5A-TR |SMAJ65ATRST N/a65400avaiTRANSIL
SMAJ6.5CA-TR |SMAJ65CATRSTN/a65400avaiTRANSIL
SMAJ60A-TR |SMAJ60ATRST N/a82500avaiTRANSIL
SMAJ60CA-TR |SMAJ60CATRST N/a82500avaiTRANSIL
SMAJ7.0A-TR |SMAJ70ATRSTN/a65400avaiTRANSIL
SMAJ7.0CA-TR |SMAJ70CATRSTN/a65400avaiTRANSIL
SMAJ70A-TR |SMAJ70ATRSTN/a82500avaiTRANSIL
SMAJ70CA-TR |SMAJ70CATRSTN/a82500avaiTRANSIL
SMAJ8.5A-TR |SMAJ85ATRST N/a65400avaiTRANSIL
SMAJ8.5CA-TR |SMAJ85CATRSTN/a65400avaiTRANSIL
SMAJ85A-TR |SMAJ85ATRSTN/a82500avaiTRANSIL
SMAJ85CA-TR |SMAJ85CATRST N/a63800avaiTRANSIL


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SMAJ30CA , SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS
SMAJ30CA , SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS
SMAJ30CA , SURFACE MOUNT UNIDIRECTIONAL AND BIDIRECTIONAL TRANSIENT VOLTAGE SUPPRESSORS
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SMAJ100A-TR-SMAJ100CA-TR-SMAJ10A-TR-SMAJ10CA-TR-SMAJ12A-TR-SMAJ12CA-TR-SMAJ130A-TR-SMAJ130CA-TR-SMAJ13A-TR-SMAJ13CA-TR-SMAJ15A-TR-SMAJ15CA-TR-SMAJ170A-TR-SMAJ170CA-TR-SMAJ188A-TR-SMAJ188CA-TR-SMAJ18A-TR-SMAJ18CA-TR-SMAJ20A-TR-SMAJ20CA-TR-SMAJ22A-TR-SMAJ22CA
TRANSIL
SMA J5.0A-TR,CA -TR
SMA J188A -TR,CA -TR

TRANSILTM
PEAK PULSE POWER : 400 W (10/1000μs)
STAND OFF VOLTAGE RANGE :
From 5V to 188V.
UNI AND BIDIRECTIONAL TYPES
LOW CLAMPING FACTOR
FAST RESPONSE TIME
JEDEC REGISTERED PACKAGE OUTLINE
FEATURES
Note 1 : For a surge greater than the maximum values, the diode will fail in short-circuit.
ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C)
DESCRIPTION

The SMAJ series are TRANSILTM diodes designed
specifically for protecting sensitive equipment
against transient overvoltages. The SMA package
allows save spacing on high density printed circuit
boards.
Transil diodes provide high overvoltage protection
by clamping action. Their instantaneous response
to transient overvoltages makes them particularly
suited to protect voltage sensitive devices such
as MOS Technology and low voltage supplied
IC’s.
September 1998 Ed: 5A
THERMAL RESISTANCES

1/5
ELECTRICAL CHARACTERISTICS (Tamb = 25°C)
Note 2 :Pulse test : tp < 50 ms.
Note 3 :ΔVBR = αT * (Tamb - 25) * VBR(25°C).
Note 4 :VR = 0 V, F = 1 MHz. For bidirectional types,

capacitance value is divided by 2.
1000s
%IPP t
SMAJxxxA-TR, CA-TR

2/5
25 50 75 100 125 150 1750.01.1 Ppp[Tj initial]/Ppp[Tj initial=25°C]
Fig 1: Peak power dissipation versus initial

junction temperature.
0.01 0.10 1.00 10.00100
Ppp(W)
Fig 2: Peak pulse power versus exponential pulse
duration (Tj initial=25°C). 10 100 5000.1
200.0 Ipp(A)
Fig 3: Clamping voltage versus peak pulse current

(Tj initial=25°C)
Exponential waveform tp=20μs & tp=1ms. 10 100 20010
5000 C(pF)
Fig 4-1: Capacitance versus reverse applied

voltage (typical values) (SMAJxxA). 10 100 2001
C(pF)
Fig 4-2: Capacitance versus reverse applied
voltage (typical values) (SMAJxxCA).
SMAJxxxA-TR, CA-TR

3/5
0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.40.01
10.00I (A)FM
Fig 5: Peak forward voltage drop versus peak

forward current (typical values).
1E-2 1E-1 1E+0 1E+1 1E+2 5E+20.01
1.00 Zth(j-a)/Rth(j-a)
Fig 6:
Relative variation of thermal impedance
junction to ambient versus pulse duration. 1 234 540
Rth(j-a) (°C/W)
Fig 7: Thermal resistance junction to ambient
versus copper surface under each lead
(printed circuit board FR4 e(Cu)=35μm). 25 50 75 100 125 1501E-1
1E+0
1E+1
1E+2
1E+3
2E+3 [Tj] / I [Tj=25°C]RR
Fig 8: Relative variation of leakage current versus

junction temperature.
SMAJxxxA-TR, CA-TR

4/5
. However, STMicroelectronics assumes no responsibility for
the or other rights of third parties which may
result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics.
Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces
all information previously supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without
express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
© 1998 STMicroelectronics - Printed in Italy - All rights reserved.
STMicroelectronics GROUP OF COMPANIES
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The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
Packaging : standard packaging is in tape and reel.
PACKAGE MECHANICAL DATA

SMA (Plastic)
MARKING : Logo, Date Code, Type Code, Cathode Band (for unidirectional types only).
FOOTPRINT DIMENSIONS (Millimeter)

SMA Plastic.
Weight = 0.068 g
ORDER CODE
SMAJxxxA-TR, CA-TR

5/5
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