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SMAJ7.0A Datasheet(PDF) 2 Page - MDE Semiconductor, Inc.

Part No. SMAJ7.0A
Description  SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR
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Maker  MDE [MDE Semiconductor, Inc.]
Homepage  http://www.mdesemiconductor.com
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MDE Semiconductor, Inc.
78-150 Calle Tampico, Unit 210, La Quinta, CA., USA 92253 Tel: 760-564-8656 • Fax: 760-564-2414
1-800-831-4881 Email: sales@mdesemicondutor.com Web: www.mdesemiconductor.com
RATING AND CHARACTERISTIC CURVES SMAJ SERIES
10
100
1000
0
0.2
0.4
0.6
0.8
1
1.2
Number of Cycles at 60 Hz
50
200
TJ = TJ max,
8.3ms Single Half Sine-Wave
(JEDEC Method)
10
100
1000
10000
Measured at
Stand-Off
Voltage, VWM
TJ = 25°C
f = 1.0MHZ
Vsig = 50mVp-p
Fig.4 - Typical Junction Capacitance
1
100
200
10
Uni-Directional
Bi-Directional
VWM - Reverse Stand-Off Voltage (V)
0
12.5
25
37.5
50
62.5
75
87.5
100
0
25
50
75
100
125
150
175
200
Fig.2 - Pulse Derating Curve
0.2x0.2"(5.0x5.0mm)
Copper Pad Areas
TA - Ambient Temperature (°C)
0.1
1
10
100
10ms
0.1µs
1.0µs
10µs
100µs
1.0ms
td - Pulse Width (sec.)
Fig. 1 - Peak Pulse Power Rating
0.2x0.2"(5.0x5.0mm)
Copper Pad Areas
Non-repetitive Pulse
Wavetorm shown in Fig.3
TA = 25°C
SMAJ5.0 –
SMAJ78
SMAJ85A –
SMAJ170
t - Time(ms)
4.0
150
0
1.0
2.0
tr = 10µsec.
Peak Value
IPPM
TJ = 25°C
Pulse Width(td)is defined
as the point where the
peak current decays to
50% of IPPM
10/1000µsec.Waveform
as defined by R.E.A.
td
Fig.3 - Pulse Waveform
4.0
50
Half Value- IPPM
2
100
3.0
0
1
10
100
1000
0
0.2
0.4
0.6
0.8
1
1.2
Fig. 5 - Typ.Transient Thermal Impedance
tp-Pulse Duration (sec)




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