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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
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 -TRTRANSILTM
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)
DESCRIPTIONThe 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 RESISTANCES1/5
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-TR2/5
25 50 75 100 125 150 1750.01.1
Ppp[Tj initial]/Ppp[Tj initial=25°C]
Fig 1: Peak power dissipation versus initialjunction 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 appliedvoltage (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
10.00
I (A)FM
Fig 5: Peak forward voltage drop versus peakforward 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 versusjunction temperature.
SMAJxxxA-TR, CA-TR4/5
. 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
Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco -
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
:
www.ic-phoenix.com
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