SMAT70A/SMBT70A
400W, 600W SURFACE MOUNT TRANSIENT
VOLTAGE SUPPRESSOR
Features
NEW PRODUCT
路
路
路
路
路
路
400, 600W Peak Pulse Power Dissipation
70V Standoff Voltage
100V Maximum Clamping Voltage -
A requirement of many -48V Backplane
Telecom Applications
Glass Passivated Die Construction
Fast Response Time: Typically less than 1 ps
Plastic Material - UL Flammability
Classification Rating 94V-0
SMA, SMB
B
A
C
D
J
Mechanical Data
路
路
路
路
路
路
Case: SMA, SMB Transfer Molded Epoxy
Terminals: Solderable per MIL-STD-202,
Method 208
Polarity Indicator: Cathode Band
Marking: Date Code (See Sheet 3) and Marking
Code (See Sheet 1)
Weight: SMA 0.064 grams
SMB 0.093 grams
Ordering Information: Sheet 3
H
G
E
SMBT70A
SMB
Min
3.30
4.06
1.96
0.15
5.00
0.10
0.76
2.00
Max
3.94
4.57
2.21
0.31
5.59
0.20
1.52
2.62
SMAT70A
Package
Dim
A
B
C
D
E
G
H
J
SMA
Min
2.29
4.00
1.27
0.15
4.80
0.10
0.76
2.01
Max
2.92
4.60
1.63
0.31
5.59
0.20
1.52
2.62
Maximum Ratings
@ T
A
= 25掳C unless otherwise specified
Symbol
P
PK
I
FSM
V
F
T
j
, T
STG
SMAT70A
400
40
3.5
-55 to +150
SMBT70A
600
100
Unit
W
A
V
掳C
Characteristic
Peak Pulse Power Dissipation
(Non repetitive current pulse derated above T
A
= 25掳C)
Peak Forward Surge Current, 8.3ms Single Half Sine
Wave Superimposed on Rated Load (JEDEC Method)
(Note 2)
Instantaneous Forward Voltage @ I
PP
= 35A
(Note 2)
Operating and Storage Temperature Range
Electrical Characteristics
Reverse
Standoff
Voltage
V
RWM
(V)
SMAT70A
SMBT70A
Notes:
70
70
Breakdown
Voltage
V
BR
@ I
T
(Note 3)
Min
(V)
77.8
77.8
Max
(V)
89.5
89.5
@T
A
= 25掳C unless otherwise specified
Max.
Reverse
Leakage @
V
RWM
I
R
(mA)
5.0
5.0
Max.
Clamping
Voltage @
I
pp
V
C
(V)
100
100
Max. Peak
Pulse
Current
I
pp
(A)
3.5
5.3
Typical
Junction
Capacitance
(Note 4)
(pF)
55
80
Typical
Voltage
Temp.
Variation
of V
BR
mV/掳C
80
80
KEX
NPX
Part Number
Test
Current
Marking
Code
I
T
(mA)
1.0
1.0
1. Measured with 8.3ms single half sine-wave. Duty cycle = 4 pulses per minute maximum.
2. V
BR
measured with I
T
current pulse = 300ms.
3. f = 1MHz, V
R
= 0VDC.
DS30213 Rev. D-2
1 of 3
SMAT70A/SMBT70A
1
2
3
