SMAJ43CA-TR [STMICROELECTRONICS]
TRANSILTM; TRANSILTMSMAJ5.0A-TR,CA-TR
SMAJ188A-TR,CA-TR
®
TRANSILTM
FEATURES
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
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.
SMA
(JEDEC D0214 AC)
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.
ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C)
Symbol
PPP
Parameter
Peak pulse power dissipation (see note 1)
Power dissipation on infinite heatsink
Value
400
3.3
Unit
W
Tj initial = Tamb
amb = 50°C
P
T
W
IFSM
Non repetitive surge peak forward
current for unidirectional types
tp = 10ms
Tj initial = Tamb
40
A
Storage temperature range
Maximum junction temperature
Tstg
Tj
- 65 to + 175
150
°C
°C
TL
Maximum lead temperature for soldering during 10 s.
260
°C
Note 1 : For a surge greater than the maximum values, the diode will fail in short-circuit.
THERMAL RESISTANCES
Symbol
Rth (j-l)
Parameter
Value
30
Unit
°C/W
°C/W
Junction to leads
Rth (j-a)
Junction to ambient on printed circuit on recommended pad
layout
120
September 1998 Ed: 5A
1/5
SMAJxxxA-TR, CA-TR
ELECTRICAL CHARACTERISTICS (Tamb = 25°C)
I
I
F
Symbol
VRM
VBR
Parameter
Stand-off voltage
V
V
BR
CL
Breakdown voltage
V
V
F
RM
VCL
Clamping voltage
V
I
I
RM
IRM
Leakage current @ VRM
Peak pulse current
IPP
α
T
Voltage temperature coefficient
Forward voltage drop
PP
VF
I
RM @ VRM VBR @ IR VCL @ IPP
VCL @ IPP
T
C
α
Types
max
min
note2
mA
max
10/1000µs
max
8/20µs
max
note3 note4
10-4/°C pF
typ
Unidirectional Mark.
Bidirectional
Mark. µA
V
V
V
A
V
A
SMAJ5.0A-TR
SMAJ6.0A-TR
SMAJ6.5A-TR
SMAJ8.5A-TR
SMAJ10A-TR
SMAJ12A-TR
SMAJ13A-TR
SMAJ15A-TR
SMAJ18A-TR
SMAJ20A-TR
SMAJ22A-TR
SMAJ24A-TR
SMAJ26A-TR
SMAJ28A-TR
SMAJ30A-TR
SMAJ33A-TR
SMAJ40A-TR
SMAJ43A-TR
SMAJ48A-TR
SMAJ58A-TR
SMAJ70A-TR
SMAJ85A-TR
SMAJ100A-TR
SMAJ130A-TR
SMAJ154A-TR
SMAJ170A-TR
SMAJ188A-TR
AE SMAJ5.0CA-TR
DUB SMAJ6.0CA-TR
DUC SMAJ6.5CA-TR DBC 500 6.5
DUH SMAJ8.5CA-TR DBH 10 8.5 9.44
AA 800 5.0
DBB 800 6.0
6.4 10 9.2 43.5 13.4 174
6.7 10 10.3 38.8 13.7 170
7.2 10 11.2 35.7 14.5 160
5.7
5.9
6.1
7.3
7.8
8.3
8.4
8.8
9.2
9.4
9.6
9.6
9.7
9.8
9.9
10.0
10.1
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.8
10.8
10.8
3500
3300
3100
2000
1550
1325
1200
975
800
725
625
600
575
510
480
450
370
350
320
270
230
200
170
145
125
120
110
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
14.4 27.7 18.6 124
17 23.5 21.7 106
19.9 20.1 25.3 91
21.5 18.6 27.2 85
24.4 16.4 32.5 71
29.2 13.7 39.3 59
32.4 12.3 42.8 54
35.5 11.2 48.3 48
AX SMAJ10CA-TR
DUK SMAJ12CA-TR
BG SMAJ13CA-TR
BM SMAJ15CA-TR
DUQ SMAJ18CA-TR
DUR SMAJ20CA-TR
DUS SMAJ22CA-TR
DUT SMAJ24CA-TR
DUU SMAJ26CA-TR
CG SMAJ28CA-TR
CK SMAJ30CA-TR
CM SMAJ33CA-TR
DUZ SMAJ40CA-TR
EUA SMAJ43CA-TR
CX SMAJ48CA-TR
EUF SMAJ58CA-TR
EUI SMAJ70CA-TR
EUL SMAJ85CA-TR
AC
DBK
BH
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
10 11.1
12 13.3
13 14.4
15 16.7
AJ
DBQ
DBR
DBS
DBT
DBU
CH
18
20
20 22.2
22 24.4
24 26.7
26 28.9
28 31.1
30 33.3
33 36.7
40 44.4
43 47.8
48 53.3
58 64.4
70 77.8
85 94.4
100 111
130 144
154 171
170 189
188 209
38.9 10.3 50
42.1 9.5 53.5 43
45.4 8.8 59 39
46
CL
CN
48.4 8.3 64.3 36
53.3 7.5 69.7 33
DBZ
EBA
CY
EBF
EBI
EBL
64.5 6.2
69.4 5.7
84
91
27
25
23
19
16
13
11
9
77.4 5.2 100
93.6 4.3 121
113 3.5 146
137 2.9 178
162 2.5 212
209 1.9 265
246 1.6 317
EUN SMAJ100CA-TR EBN
EUQ SMAJ130CA-TR EBQ
EUT SMAJ154CA-TR EBT
SR SMAJ170CA-TR
EUV SMAJ188CA-TR EBV
7
SS
275 1.4 353 6.5
328 1.4 388
6
% I
PP
Note 2 :Pulse test : t < 50 ms.
p
10
s
100
50
0
Note 3 :∆V
= αT (T
- 25) V (25°C).
* BR
BR
*
amb
Note 4 :V = 0 V, F = 1 MHz. For bidirectional types,
R
PULSE WAVEFORM 10/1000
s
capacitance value is divided by 2.
t
1000
s
2/5
SMAJxxxA-TR, CA-TR
Fig 1: Peak power dissipation versus initial
junction temperature.
Fig 2: Peak pulse power versus exponential pulse
duration (Tj initial=25°C).
Ppp[Tj initial]/Ppp[Tj initial=25°C]
Ppp(W)
1.1
5000
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
1000
0.1
0.0
tp(ms)
Tj initial(°C)
100
0.01
0.10
1.00
10.00
0
25
50
75
100 125 150 175
Fig 3: Clamping voltage versus peak pulse current
(Tj initial=25°C)
Exponential waveform tp=20µs & tp=1ms.
Ipp(A)
200.0
100.0
tp=20µs
SMAJ13A,CA
SMAJ5.0A,CA
SMAJ26A,CA
SMAJ58A,CA
tp=1ms
10.0
1.0
SMAJ188A,CA
V
CL(V)
0.1
1
10
100
500
Fig 4-1: Capacitance versus reverse applied
voltage (typical values) (SMAJxxA).
Fig 4-2: Capacitance versus reverse applied
voltage (typical values) (SMAJxxCA).
C(pF)
C(pF)
5000
2000
1000
SMAJ5.0CA
F=1MHz
F=1MHz
SMAJ5.0A
SMAJ13CA
1000
100
10
SMAJ13A
SMAJ26A
SMAJ26CA
SMAJ58CA
100
10
1
SMAJ58A
SMAJ188CA
SMAJ188A
V
R(V)
VR(V)
1
10
100 200
1
10
100 200
3/5
SMAJxxxA-TR, CA-TR
Fig 5: Peak forward voltage drop versus peak
forward current (typical values).
Fig 6: Relative variation of thermal impedance
junction to ambient versus pulse duration.
I
FM(A)
Zth(j-a)/Rth(j-a)
10.00
1.00
0.10
0.01
1.00
Tj=125°C
0.10
Tj=25°C
VFM(V)
tp(s)
0.01
1E-2
1E-1
1E+0
1E+1
1E+2 5E+2
0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4
Fig 7: Thermal resistance junction to ambient
versus copper surface under each lead
(printed circuit board FR4 e(Cu)=35µm).
Fig 8: Relative variation of leakage current versus
junction temperature.
Rth(j-a) (°C/W)
I
R
[Tj] / IR [Tj=25°C]
140
2E+3
1E+3
130
120
110
100
90
VBR ≥ 8.5V
1E+2
1E+1
1E+0
1E-1
80
70
VBR < 8.5V
60
50
Tj(°C)
75
S(Cu)(cm²)
40
0
25
50
100
125
150
0
1
2
3
4
5
4/5
SMAJxxxA-TR, CA-TR
ORDER CODE
SM A J 85 C A - TR
TAPE & REEL
SURFACE MOUNT
400 WATTS
BIDIRECTIONAL
No suffix : Unidirectional
STAND OFF VOLTAGE
MARKING : Logo, Date Code, Type Code, Cathode Band (for unidirectional types only).
PACKAGE MECHANICAL DATA
SMA (Plastic)
DIMENSIONS
Millimeters Inches
Min. Min.
REF.
E1
Max.
2.70
0.20
1.65
0.41
5.60
4.60
2.95
1.60
Max.
0.106
0.008
0.065
0.016
0.220
0.181
0.116
0.063
A1
A2
b
1.90
0.05
1.25
0.15
4.80
3.95
2.25
0.75
0.075
0.002
0.049
0.006
0.189
0.156
0.089
0.030
D
c
E
E
A1
E1
D
A2
C
L
b
L
FOOTPRINT DIMENSIONS (Millimeter)
SMA Plastic.
Weight = 0.068 g
Packaging : standard packaging is in tape and reel.
1.65
1.45
2.40
1.45
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for
the consequences of use of such information nor for any infringement of patents 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.
5/5
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