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®
FEATURES
PEAK PULSE POWER : 1500 W (10/1000µs)
STAND OFF VOLTAGE RANGE :
From 5V to 188V.
UNI AND BIDIRECTIONAL TYPES
LOW CLAMPING FACTOR
FAST RESPONSE TIME
DESCRIPTION
The SMCJ series are TRANSILTM diodes designed
specifically for protecting sensitive equipment
against transient overvoltages.
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.
SMCJ5.0A-TR,CA-TR
SMCJ188A-TR,CA-TR
TRANSILTM
SMC
(JEDEC DO-214AB)
ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C)
Symbol
Parameter
PPP Peak pulse power dissipation (see note 1) Tj initial = Tamb
P Power dissipation on infinite heatsink
Tamb = 50°C
IFSM Non repetitive surge peak forward
current for unidirectional types
tp = 10ms
Tj initial = Tamb
Tstg Storage temperature range
Tj Maximum junction temperature
TL Maximum lead temperature for soldering during 10 s.
Note 1 : For a surge greater than the maximum values, the diode will fail in short-circuit.
Value
1500
6.5
200
Unit
W
W
A
- 65 to + 175
150
260
°C
°C
°C
THERMAL RESISTANCES
Symbol
Rth (j-l)
Rth (j-a)
Parameter
Junction to leads
Junction to ambient on printed circuit on recommended pad
layout
August 1999 - Ed: 5A
Value
15
75
Unit
°C/W
°C/W
1/5

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SMCJxxxA-TR, CA-TR
ELECTRICAL CHARACTERISTICS (Tamb = 25°C)
Symbol
VRM
VBR
VCL
IRM
IPP
αT
VF
Parameter
Stand-off voltage
Breakdown voltage
Clamping voltage
Leakage current @ VRM
Peak pulse current
Voltage temperature coefficient
Forward voltage drop
I
IF
VCL VBR
VRM
VF
I RM
I PP
V
Unidirectional
SMCJ5.0A-TR
SMCJ6.0A-TR
SMCJ6.5A-TR
SMCJ8.5A-TR
SMC10A-TR
SMCJ12A-TR
SMCJ13A-TR
SMCJ15A-TR
SMCJ18A-TR
SMCJ20A-TR
SMCJ22A-TR
SMCJ24A-TR
SMCJ26A-TR
SMCJ28A-TR
SMCJ30A-TR
SMCJ33A-TR
SMCJ40A-TR
SMCJ48A-TR
SMCJ58A-TR
SMCJ60A-TR
SMCJ70A-TR
SMCJ85A-TR
SMCJ100A-TR
SMCJ130A-TR
SMCJ154A-TR
SMCJ170A-TR
SMCJ188A-TR
Types
Mark. Bidirectional
FUA SMCJ5.0CA-TR
FUB SMCJ6.0CA-TR
FUC SMCJ6.5CA-TR
FUD SMCJ8.5CA-TR
FUF SMCJ10CA-TR
FUH SMCJ12CA-TR
FUI SMCJ13CA-TR
FUJ SMCJ15CA-TR
FUL SMCJ18CA-TR
FUM SMCJ20CA-TR
FUN SMCJ22CA-TR
FUO SMCJ24CA-TR
FUP SMCJ26CA-TR
FUQ SMCJ28CA-TR
FUR SMCJ30CA-TR
FUS SMCJ33CA-TR
FUU SMCJ40CA-TR
FUW SMCJ48CA-TR
FUZ SMCJ58CA-TR
GUA SMCJ60CA-TR
GUB SMCJ70CA-TR
GUE SMCJ85CA-TR
GUG SMCJ100CA-TR
GUI SMCJ130CA-TR
GUL SMCJ154CA-TR
GUM SMCJ170CA-TR
GUN SMCJ188CA-TR
IRM @ VRM
max
Mark.
FBA
FBB
FBC
FBD
FBF
FBH
FBI
FBJ
FBL
FBM
FBN
FBO
FBP
FBQ
FBR
FBS
FBU
FBW
FBZ
GBA
GBB
GBE
GBG
GBI
GBL
GBM
GBN
µA
800
800
500
5
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
V
5.0
6.0
6.5
8.5
10
12
13
15
18
20
22
24
26
28
30
33
40
48
58
60
70
85
100
130
154
170
188
VBR @ IR
min
note2
V mA
6.4 10
6.7 10
7.2 10
9.4 1
11.1 1
13.3 1
14.4 1
16.7 1
20 1
22.2 1
24.4 1
26.7 1
28.9 1
31.1 1
33.3 1
36.7 1
44.4 1
53.3 1
64.4 1
66.5 1
77.8 1
94.4 1
111 1
144 1
171 1
189 1
209 1
VCL @ IPP
max
10/1000µs
VA
9.2 171
10.3 152
11.2 140
14.4 105
17 92
19.9 79
21.5 73
24.4 64
29.2 53
32.4 48
35.5 44
38.9 40
42.1 37
45.4 34
48.4 32
53.3 29
64.5 24
77.4 20
93.6 16
96.6 15.7
113 13.9
137 11.5
162 9.7
209 7.5
246 6.1
275 5.7
328 4.6
VCL @ IPP
max
8/20µs
VA
13.4 746
13.7 730
14.5 690
19.5 512
21.7 461
25.3 394
27.2 368
32.5 308
39.3 254
42.8 234
48.3 207
50 200
53.5 187
59 169
64.3 156
69.7 143
84 119
100 100
121 83
125 81
146 69
178 56
212 47
265 38
317 31.5
353 28
388 26
αT C
max typ
note3 note4
10-4/°C pF
5.7 9500
5.9 9000
6.1 8500
7.3 7000
7.8 6000
8.3 5250
8.4 5000
8.8 4300
9.2 3700
9.4 3500
9.6 3200
9.6 3050
9.7 2900
9.8 2700
9.9 2500
10.0 2400
10.1 2050
10.3 1800
10.4 1550
10.5 1520
10.5 1350
10.6 1150
10.7 1000
10.8 850
10.8 725
10.8 675
10.8 625
% I PP
100
10 s
PULSE WAVEFORM 10/1000 s
50
0
2/5
1000 s
t
Note 2 : Pulse test : tp < 50 ms.
Note 3 : VBR = αT * (Tamb - 25) * VBR(25°C).
Note 4 : VR = 0 V, F = 1 MHz. For bidirectional types,
capacitance value is divided by 2.

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SMCJxxxA-TR, CA-TR
ORDER CODE
SM C J 85 C A - TR
SURFACE MOUNT
1500 WATTS
STAND OFF VOLTAGE
TAPE & REEL
BIDIRECTIONAL
No suffix : Unidirectional
Fig. 1: Peak power dissipation versus initial junc-
tion temperature.
Ppp[Tj initial]/Ppp[Tj initial=25°C]
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
25 50 75 100 125 150 175
Tj initial(°C)
Fig. 2: Continous power dissipation versus initial
junction temperature.
P(W)
8
Rth(j-a)=Rth(j-l)
7
6
5
4
3 Rth(j-a)=75°C/W
2
1
0
0 25
50 75 100
Tamb(°C)
125
150
Fig. 3: Peak pulse power versus exponential pulse
duration (Tj initial=25°C).
Ppp(kW)
50.0
10.0
1.0
Fig. 4: Clamping voltage versus peak pulse cur-
rent (Tj initial=25°C).
Exponential waveform tp=20µs & tp=1ms.
Ipp(A)
1E+3
1E+2
SMCJ5.0A,CA
tp=20µs
1E+1
SMCJ8.5A,CA
SMCJ18A,CA
SMCJ33A,CA
SMCJ58A,CA
SMCJ130A,CA
SMCJ188A,CA
1E+0
tp=1ms
0.1
0.01
0.10 1.00
tp(ms)
10.00
1E-1
1
10 100
Vcl(V)
1000
3/5

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SMCJxxxA-TR, CA-TR
Fig. 5-1: Capacitance versus reverse applied volt-
age (typical values) (SMCJxxA serie).
C(nF)
10.00
SMCJ5.0A
F=1MHz
1.00
0.10
SMCJ18A
SMCJ33A
SMCJ58A
SMCJ188A
Fig. 5-2: Capacitance versus reverse applied volt-
age (typical values) (SMCJxxCA serie).
C(nF)
10.00
SMCJ5.0CA
F=1MHz
1.00
0.10
SMCJ18CA
SMCJ33CA
SMCJ58CA
SMCJ188CA
0.01
1
10
VR(V)
100 200
Fig. 6: Peak forward voltage drop versus peak for-
ward current (typical values).
IFM(A)
200.0
100.0
Tj=125°C
10.0
Tj=25°C
1.0
0.01
1
10
VR(V)
100 200
Fig. 7: Relative variation of thermal impedance
junction to ambient versus pulse duration.
(Printed circuit board FR4, S(Cu)=1cm2).
Zth(j-a)/Rth(j-a)
1.00
0.10
0.1
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0.01
1E-2
VFM(V)
1E-1
1E+0
1E+1
tp(s)
1E+2 5E+2
Fig. 8: Thermal resistance junction to ambient ver-
sus copper surface under each lead
(Printed circuit board FR4, e(Cu)=35µm)
Rth(j-a) (°C/W)
100
90
80
70
60
50
40
012345
S(cm²)
Fig. 9: Relative variation of leakage current versus
junction temperature.
IR[Tj] / IR [Tj=25°C]
2E+3
1E+3
1E+2
VBR upper or
equal to 8.5V
1E+1
1E+0
VBR<8.5V
1E-1
0
25 50 75 100 125 150
Tj(°C)
4/5

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SMCJxxxA-TR, CA-TR
MARKING : Logo, Date Code, Type Code, Cathode Band (for unidirectional types only).
PACKAGE MECHANICAL DATA
SMC (Plastic)
E1
D
E
A1
C A2
E2 L
b
REF.
A1
A2
b
c
E
E1
E2
D
L
DIMENSIONS
Millimeters
Inches
Min. Max. Min. Max.
1.90 2.45 0.075 0.096
0.05 0.20 0.002 0.008
2.90 3.2 0.114 0.126
0.15 0.41 0.006 0.016
7.75 8.15 0.305 0.321
6.60 7.15 0.260 0.281
4.40 4.70 0.173 0.185
5.55 6.25 0.218 0.246
0.75 1.60 0.030 0.063
FOOTPRINT DIMENSIONS (Millimeter)
SMC Plastic.
3.3
2.0 4.2 2.0
Packaging : standard packaging is in tape and reel.
Weight : 0.25 g
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 ap-
proval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
© 1999 STMicroelectronics - Printed in Italy - All rights reserved.
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