SMAT70A_1 Datasheet, PDF (1/3 Pages) Diodes Incorporated – 400W, 600W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR

SMAT70A/SMBT70A
400W, 600W SURFACE MOUNT TRANSIENT
VOLTAGE SUPPRESSOR
Features
· 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
· Lead Free Finish/RoHS Complaint (Note 4)
Mechanical Data
· Case: SMA/SMB
· Case Material: Molded Plastic. UL Flammability
Classification Rating 94V-0
· Moisture Sensitivity: Level 1 per J-STD-020C
· Terminals: Lead Free Plating (Matte Tin Finish).
Solderable per MIL-STD-202, Method 208
· Polarity Indicator: Cathode Band
· Marking: Date Code (See Page 3) and Marking Code (See
Page 1)
· Ordering Information: See Page 3
· Weight: SMA 0.064 grams
SMB 0.093 grams
SMA, SMB
B
A
C
D
J
H
G
E
SMAT70A
Package
SMA
Dim Min Max
A 2.29 2.92
B 4.00 4.60
C 1.27 1.63
D 0.15 0.31
E 4.80 5.59
G 0.10 0.20
H 0.76 1.52
J 2.01 2.62
SMBT70A
SMB
Min Max
3.30 3.94
4.06 4.57
1.96 2.21
0.15 0.31
5.00 5.59
0.10 0.20
0.76 1.52
2.00 2.62
Maximum Ratings ^{@ T}A ^{= 25°C unless otherwise specified}
Characteristic
Symbol
SMAT70A
SMBT70A
Unit
Peak Pulse Power Dissipation
(Non repetitive current pulse derated above T_A = 25°C)
PPK
400
600
W
Peak Forward Surge Current, 8.3ms Single Half Sine
Wave Superimposed on Rated Load (JEDEC Method)
I_FSM
40
100
A
(Note 2)
Instantaneous Forward Voltage @ I_PP = 35A
(Note 2)
V_F
3.5
V
Operating and Storage Temperature Range
T_j, T_STG
-55 to +150
°C
Electrical Characteristics @TA = 25°C unless otherwise specified
Part Number
SMAT70A
SMBT70A
Reverse
Standoff
Voltage
Breakdown
Voltage
V_BR @ I_T
(Note 3)
Test
Current
Max.
Reverse
Leakage @
V_RWM
VRWM (V)
70
70
Min Max
(V) (V)
77.8 89.5
77.8 89.5
IT (mA)
1.0
1.0
IR (mA)
5.0
5.0
Max.
Clamping
Voltage @
I_pp
V_C (V)
100
100
Max. Peak
Pulse
Current
I_pp
Typical
Junction
Capacitance
(Note 3)
Typical
Voltage
Temp.
Variation
of V_BR
(A)
(pF)
mV/°C
3.5
140
80
5.3
290
80
Notes:
1. Measured with 8.3ms single half sine-wave. Duty cycle = 4 pulses per minute maximum.
2. VBR measured with IT current pulse = 300ms.
3. f = 1MHz, VR = 0VDC.
4. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Marking
Code
KEX
NPX
DS30213 Rev. 7 - 2
1 of 3
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SMAT70A/SMBT70A
ã Diodes Incorporated