SMAJ20CA Littelfuse Inc, SMAJ20CA Datasheet - Page 3

• Manufacturer Part Number: SMAJ20CA
• Description: DIODE TVS 20V 400W BIDIR 5% SMA
• Manufacturer: Littelfuse Inc
• Series: SMAJr

Specifications of SMAJ20CA

• Package / Case: DO-214AC, SMA
• Voltage - Reverse Standoff (typ): 20V
• Voltage - Breakdown: 22.2V
• Power (watts): 400W
• Polarization: Bidirectional
• Mounting Type: Surface Mount
• Polarity: Bidirectional
• Channels: 1 Channel
• Clamping Voltage: 32.4 V
• Operating Voltage: 20 V
• Breakdown Voltage: 22.2 V
• Termination Style: SMD/SMT
• Peak Surge Current: 12.3 A
• Peak Pulse Power Dissipation: 400 W
• Maximum Operating Temperature: + 150 C
• Minimum Operating Temperature: - 65 C
• Dimensions: 2.79 mm W x 4.5 mm L x 2.29 mm H
• Number Of Elements: 1
• Package Type: DO-214AC
• Operating Temperature Classification: Military
• Reverse Breakdown Voltage: 22.2V
• Reverse Stand-off Voltage: 20V
• Leakage Current (max): 1uA
• Peak Pulse Current: 12.3A
• Test Current (it): 1mA
• Operating Temp Range: -65C to 150C
• Mounting: Surface Mount
• Pin Count: 2
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free by exemption / RoHS Compliant
• Other names: SMAJ20CALFTR

©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
Ratings and Characteristic Curves
Figure 1 - Peak Pulse Power Rating Curve
Figure 3 - Pulse Waveform
Figure 5 - Steady State Power Dissipation Derating
0.1
10
1
Curve
1.2
0.8
0.6
0.4
0.2
150
100
0.000001
50
1
0
0
0
0.2x0.2" (5.0x5.0mm)
Copper Pad Area
0
25
t d
t r =10μsec
T
A
- Ambient Temperature (ºC)
Peak Value
I PPM
t
50
0.00001
1.0
d
-Pulse Width (sec.)
75
t-Time (ms)
Half Value
I PPM
2.0
100
( )
I PPM
2
10/1000μsec. Waveform
as defined by R.E.A
T J =25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I PPM
0.0001
(T
A
=25°C unless otherwise noted)
125
Transient Voltage Suppression Diodes
Surface Mount – 400W > SMAJ series
3.0
150
0.001
175
4.0
Revision: January 09, 2009
9
Figure 2 - Pulse Derating Curve
Figure 4 - Typical Junction Capacitance
Figure 6 - Maximum Non-Repetitive Forward Surge
10000
1000
100
Current Uni-Directional Only
100
80
60
40
20
45
40
35
30
25
20
15
10
0
10
5
0
1
1.0
1
0
Tj=25ºC
f=1.0MHz
Vsig=50mVp-p
Uni-directional @VR
25
V
BR
Number of Cycles at 60 Hz
- Reverse Breakdown Voltage (V)
T
A
50
-Ambient temperature (ºC)
10.0
Bi-directional @VR
75
10
Bi-directional V=0V
100
100.0
125
Uni-directional V=0V
150
1000.0
100
175
SMAJ Series