SMBJ5.0A-TR,CA-TR
SMBJ188A-TR,CA-TR
TRANSIL
TM
PEAK PULSE POWER : 600 W (10/1000
s)
STAND OFF VOLTAGE RANGE :
From 5V to 188V.
UNI AND BIDIRECTIONAL TYPES
LOW CLAMPING FACTOR
FAST RESPONSE TIME
JEDEC REGISTERED PACKAGE OUTLINE
FEATURES
SMB
(JEDEC DO-214AA)
Symbol
Parameter
Value
Unit
P
PP
Peak pulse power dissipation (see note 1)
Tj initial = T
amb
600
W
P
Power dissipation on infinite heatsink
T
amb
= 50
C
5
W
I
FSM
Non repetitive surge peak forward
current for unidirectional types
tp = 10ms
Tj initial = T
amb
100
A
T
stg
T
j
Storage temperature range
Maximum junction temperature
- 65 to + 175
150
C
C
T
L
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.
ABSOLUTE MAXIMUM RATINGS (T
amb
= 25
C)
DESCRIPTION
The SMBJ series are TRANSIL
TM
diodesdesigned
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.
January 1998 Ed: 3
Symbol
Parameter
Value
Unit
R
th (j-l)
Junction to leads
20
C/W
R
th (j-a)
Junction to ambient on printed circuit on recommended pad
layout
100
C/W
THERMAL RESISTANCES
1/6
I
IF
V F
V
VCL
VBR
VRM
I PP
I RM
V
Symbol
Parameter
V
RM
Stand-off voltage
V
BR
Breakdown voltage
V
CL
Clamping voltage
I
RM
Leakage current @ V
RM
I
PP
Peak pulse current
T
Voltage temperature coefficient
V
F
Forward voltage drop
ELECTRICAL CHARACTERISTICS (T
amb
= 25
C)
Types
I
RM
@ V
RM
V
BR
@ I
R
V
CL
@ I
PP
V
CL
@ I
PP
T
C
max.
min.
max.
max.
max.
typ.
note2
10/1000
s
8/20
s
note3
note4
Unidirectional
Mark.
Bidirectional
Mark.
A
V
V
mA
V
A
V
A
10
-4
/
C
pF
SMBJ5.0A-TR
BUZ SMBJ5.0CA-TR
BBZ
800
5.0
6.4
10
9.2
68
13.4
298
5.7
4000
SMBJ6.0A-TR
BUA SMBJ6.0CA-TR
BBA
800
6.0
6.7
10
10.3
61
13.7
290
5.9
3850
SMBJ6.5A-TR
BUB SMBJ6.5CA-TR
BBB
500
6.5
7.2
10
11.2
56
14.5
276
6.1
3700
SMBJ8.5A-TR
BUC SMBJ8.5CA-TR
BBC
5
8.5
9.4
1
14.4
41.7
19.5
205
7.3
2800
SMBJ10A-TR
BUD SMBJ10CA-TR
BBD
5
10
11.1
1
17
37
21.7
184
7.8
2300
SMBJ12A-TR
BUE SMBJ12CA-TR
BBE
5
12
13.3
1
19.9
31
25.3
157
8.3
2025
SMBJ13A-TR
BUF SMBJ13AC-TR
BBF
1
13
14.4
1
21.5
29
27.2
147
8.4
1900
SMBJ15A-TR
BUG SMBJ15CA-TR
BBG
1
15
16.7
1
24.4
25.1
32.5
123
8.8
1600
SMBJ18A-TR
BUH SMBJ18CA-TR
BBH
1
18
20
1
29.2
21.5
39.3
102
9.2
1350
SMBJ20A-TR
BUI
SMBJ20CA-TR
BBI
1
20
22.2
1
32.4
19.4
42.8
93
9.4
1250
SMBJ22A-TR
BVA SMBJ22CA-TR
CBH
1
22
24.4
1
35.5
17.7
48.3
83
9.6
1150
SMBJ24A-TR
BUJ SMBJ24CA-TR
BBJ
1
24
26.7
1
38.9
16
50
80
9.6
1112
SMBJ26A-TR
BUK SMBJ26CA-TR
BBK
1
26
28.9
1
42.1
14.9
53.5
75
9.7
1075
SMBJ28A-TR
BUL SMBJ28CA-TR
BBL
1
28
31.1
1
45.4
13.8
59
68
9.8
1000
SMBJ30A-TR
BUM SMBJ30CA-TR
BBM
1
30
33.3
1
48.4
13
64.3
62
9.9
950
SMBJ33A-TR
BUN SMBJ33CA-TR
BBN
1
33
36.7
1
53.3
11.8
69.7
57
10.0
900
SMBJ40A-TR
CUJ SMBJ40CA-TR
CBJ
1
40
44.4
1
64.5
9.7
84
48
10.1
800
SMBJ48A-TR
BUW SMBJ48CA-TR
BBW
1
48
53.3
1
77.4
8.1
100
40
10.3
700
SMBJ58A-TR
BUO SMBJ58CA-TR
BBO
1
58
64.4
1
93.6
6.7
121
33
10.4
625
SMBJ70A-TR
CUM SMBJ70CA-TR
CBM
1
70
77.8
1
113
5.5
146
27
10.5
550
SMBJ85A-TR
BUQ SMBJ85CA-TR
BBQ
1
85
94.4
1
137
4.6
178
22.5
10.6
500
SMBJ100A-TR
CUQ SMBJ100CA-TR
CBQ
1
100
111
1
162
3.8
212
19
10.7
450
SMBJ130A-TR
BUS SMBJ130CA-TR
BBS
1
130
144
1
209
3
265
15
10.8
400
SMBJ154A-TR
BUT SMBJ154CA-TR
BBT
1
154
171
1
246
2.4
317
12.6
10.8
360
SMBJ170A-TR
BUU SMBJ170CA-TR
BBU
1
170
189
1
275
2.2
353
11.3
10.8
350
SMBJ188A-TR
BUV SMBJ188CA-TR
BBV
1
188
209
1
328
2
388
10.3
10.8
330
Note 2 : Pulse test : tp < 50 ms.
Note 3 :
VBR =
T * (Tamb - 25) * VBR(25
C).
Note 4 : VR = 0 V, F = 1 MHz. For bidirectional types,
capacitance value is divided by 2.
10
s
1000
s
% I
PP
50
0
t
PULSE WAVEFORM 10/1 000 s
100
SMBJxxxA-TR, CA-TR
2/6
Fig. 1: Peak pulse power dissipation versus initial
junction temperature (printed circuit board).
Fig. 2 : Peak pulse power versus exponential pulse duration.
SMBJxxxA-TR, CA-TR
3/6
SMBJ188A
SMBJ130A
SMBJ58A
SMBJ33A
SMBJ18A
SMBJ8.5A
SMBJ5.0A
Fig. 3 :
Clamping voltage versus peak pulse current.
Exponential waveform t
p
= 20
s
________
t
p
= 1 ms
-------------
t
p
= 10 ms ...............
Note : The curves of the figure 3 are specified for a junction temperature of 25
C before surge.
The given results may be extrapolated for other junction temperatures by using the following formula :
V
BR
=
T
*
[T
amb
-25]
*
V
BR
(25
C)
For intermediate voltages, extrapolate the given results.
C (pF)
1
10
100
10
100
1000
10000
SMBJ5.0A
13A
58A
188A
V
(V)
R
F= 1 MHz
500
SMBJ
SMBJ
SMBJ
SMBJ
26A
Tj = 25
C
Fig. 4b : Capacitance versus reverse applied
voltage for bidirectional types (typical values).
C (pF)
1
10
100
10
100
1000
10000
5.0A
13A
26A
58A
188A
V
(V)
R
Tj = 25
C
F= 1 MHz
500
SMBJ
SMBJ
SMBJ
SMBJ
SMBJ
Fig. 4a : Capacitance versus reverse applied
voltage for unidirectional types (typical values).
SMBJxxxA-TR, CA-TR
4/6
Fig. 6 : Transient thermal impedance junction-
ambient versus pulse duration.
Mounting on FR4 PC Board with Recommended
pad layout.
Fig. 5 : Peak forward voltage drop versus peak
forward current (typical values for unidirectional
types).
Fig. 7 : Relative variation of leakage current
versus junction temperature.
ORDER CODE
BIDIRECTIONAL
No suffix : Unidirectional
SURFACE MOUNT
STAND OFF VOLTAGE
600 WATTS
SM
B
J 85
C
A - TR
TAPE & REEL
SMBJxxxA-TR, CA-TR
5/6
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