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SMAT70A/SMBT70A
400W, 600W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR Features
NEW PRODUCT
* * * * * *
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)
SMA, SMB
B
A
C
D
J
Mechanical Data
* * * * * * * *
H
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
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
Package Dim A B C D E G H J
SMAT70A 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
@ TA = 25C unless otherwise specified Symbol PPK IFSM VF Tj, TSTG SMAT70A 400 40 3.5 -55 to +150 SMBT70A 600 100 Unit W A V C
Characteristic Peak Pulse Power Dissipation (Non repetitive current pulse derated above TA = 25C) Peak Forward Surge Current, 8.3ms Single Half Sine Wave Superimposed on Rated Load (JEDEC Method) (Note 2) Instantaneous Forward Voltage @ IPP = 35A (Note 2) Operating and Storage Temperature Range
Electrical Characteristics
Reverse Standoff Voltage VRWM (V) SMAT70A SMBT70A
Notes: 1. 2. 3. 4.
@TA = 25C unless otherwise specified Max. Reverse Leakage @ VRWM IR (mA) 5.0 5.0 Max. Clamping Voltage @ Ipp VC (V) 100 100 Max. Peak Pulse Current Ipp (A) 3.5 5.3 Typical Junction Capacitance (Note 3) (pF) 140 290 Typical Voltage Temp. Variation of VBR mV/C 80 80 KEX NPX
Part Number
Breakdown Voltage VBR @ IT (Note 3) Min (V) 77.8 77.8 Max (V) 89.5 89.5
Test Current
Marking Code
IT (mA) 1.0 1.0
70 70
Measured with 8.3ms single half sine-wave. Duty cycle = 4 pulses per minute maximum. VBR measured with IT current pulse = 300ms. f = 1MHz, VR = 0VDC. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
DS30213 Rev. 7 - 2
1 of 3 www.diodes.com
SMAT70A/SMBT70A
a Diodes Incorporated
100
NEW PRODUCT
PEAK PULSE DERATING IN % OF PEAK POWER OR CURRENT
75
50
25
10 X 1000 Waveform as defined by REA
0 0 25 50 75 100 125 150 175 200 TA, AMBIENT TEMPERATURE ( C) Fig. 1 Pulse Derating Curve
100
Pd, PEAK PULSE POWER (kW)
Tj = 25 C
Non Repetitive Pulse Waveform Shown in Fig. 3
10
SMBT70A
1.0
SMAT70A
0.1 0.1 1.0 10 100 1000 10000
IP, PEAK PULSE CURRENT (%Ipp)
100
Peak Value Ipp
Half Value Ipp/2
50
tp
0
10 X 1000 Waveform as defined by R.E.A.
0
1
2
3
t, TIME (ms) Fig. 3 Pulse Waveform
DS30213 Rev. 7 - 2
2 of 3 www.diodes.com
SMAT70A/SMBT70A
100
NEW PRODUCT
VBR, BREAKDOWN VOLTAGE
95
90
85
80
75 0 25 50 75 100 125 150 TA, AMBIENT TEMPERATURE (C) Fig. 4 Average Breakdown Voltage vs. Ambient Temperature
Ordering Information
Device SMAT70A-13-F SMBT70A-13-F
Notes:
(Note 5) Packaging SMA SMB Shipping 5000/Tape & Reel 3000/Tape & Reel
5. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
YWW XXX
XXX = Product type marking code (See Sheet 1) = Manufacturers' code marking YWW = Date code marking Y = Last digit of year ex: 2 for 2002 WW = Week code 01 to 52
IMPORTANT NOTICE Diodes, Inc. and its subsidiaries reserve the right to make changes without further notice to any product herein to make corrections, modifications, enhancements, improvements, or other changes. Diodes, Inc. does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT The products located on our website at www.diodes.com are not recommended for use in life support systems where a failure or malfunction of the component may directly threaten life or cause injury without the express written approval of Diodes Incorporated.
DS30213 Rev. 7 - 2
3 of 3 www.diodes.com
SMAT70A/SMBT70A

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