SMAT70A_09 Datasheet, PDF (1/4 Pages) Diodes Incorporated – 400W, 600W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR

Green
SMAT70A / SMBT70A
400W, 600W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR
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Features
Mechanical Data
• 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 Compliant (Note 4)
• Green Molding Compound (No Halogen and Antimony)
(Note 5)
• Qualified to AEC-Q101 Standards for High Reliability
• Case: SMA / SMB
• Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020D
• Terminals: Lead Free Plating (Matte Tin Finish). Solderable
per MIL-STD-202, Method 208
• Polarity Indicator: Cathode Band
• Marking Information: See Page 2
• Ordering Information: See Page 2
• Weight: SMA 0.064 grams (approximate)
SMB 0.093 grams (approximate)
Top View
Bottom View
Maximum Ratings @T_A = 25°C unless otherwise specified
Characteristic
Peak Pulse Power Dissipation
(Non repetitive current pulse derated above T_A = 25° C)
Peak Forward Surge Current, 8.3ms Single Half Sine Wave
Superimposed on Rated Load (Note 2)
Instantaneous Forward Voltage @ I_PP = 35A (Note 2)
Symbol
P_PK
I_FSM
V_F
SMAT70A
400
SMBT70A
600
40
100
3.5
Unit
W
A
V
Thermal Characteristics
Characteristic
Operating and Storage Temperature Range
Symbol
T_J, T_STG
Value
-55 to +150
Unit
°C
Electrical Characteristics @T_A = 25°C unless otherwise specified
Part Number
SMAT70A
SMBT70A
Reverse
Standoff
Voltage
V_RWM (V)
70
70
Breakdown
Voltage
V_BR @ I_T
(Note 3)
Min Max
(V) (V)
77.8 89.5
77.8 89.5
Test
Current
I_T (mA)
1.0
1.0
Max.
Reverse
Leakage @
V_RWM
I_R (μA)
5.0
5.0
Max.
Clamping
Voltage @
I_pp
Max. Peak
Pulse Current
I_pp
Typical
Junction
Capacitance
(Note 3)
V_C (V)
(A)
(pF)
100
3.5
140
100
5.3
290
Typical
Voltage
Temp.
Variation
of V_BR
Marking
Code
mV/°C
80
KEX
80
NPX
Notes:
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 = 300μs.
3. f = 1MHz, V_R = 0VDC.
4. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/quality/lead_free.html.
5. Product manufactured with Data Code 0924 (week 24, 2009) and newer are built with Green Molding Compound.
SMAT70A / SMBT70A
Document number: DS30213 Rev. 10 - 2
1 of 4
www.diodes.com
July 2009
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