SA28A Fairchild Semiconductor, SA28A Datasheet - Page 3

• Manufacturer Part Number: SA28A
• Description: TVS UNIDIRECT 500W 28V DO-15
• Manufacturer: Fairchild Semiconductor
• Series: SA28r

Specifications of SA28A

• Voltage - Reverse Standoff (typ): 28V
• Voltage - Breakdown: 31.1V
• Power (watts): 500W
• Polarization: Unidirectional
• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial
• Polarity: Unidirectional
• Clamping Voltage: 45.4 V
• Operating Voltage: 28 V
• Breakdown Voltage: 31.1 V to 34.4 V
• Termination Style: Axial
• Peak Surge Current: 11 A
• Peak Pulse Power Dissipation: 500 W
• Maximum Operating Temperature: + 175 C
• Minimum Operating Temperature: - 65 C
• Dimensions: 3.56 (Max) mm W x 7.62 (Max) mm L
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SA28AFS

Figure 5. Steady State Power Derating Curve
Typical Characteristics
Figure 1. Peak Pulse Power Rating Curve
1.6
1.4
1.2
0.8
0.6
0.4
0.2
100
150
100
0.1
10
0.0001
50
1
0
1
0
0
0
25
Peak Value
td
tf = 10 sec
Ippm
0.001
Figure 3. Pulse Waveform
50
1
Lead Temperature [ºC]
Half Value-Ipp
Pulse Width [ms]
75
0.01
Time [ms]
100
Current Decays to 50% of Ipp
T = 25 C
Pulse Width (td) is Defined
as the Point Where the Peak
as Defined by R.E.A.
10/1000 sec Waveform
2
A
2
0.1
125
º
T = 25 C
A
150
3
º
e-kt
1
175
200
10
4
Figure 4. Total Capacitance - Unidirectional
100
6000
4000
2000
1000
100
75
50
25
Figure 6. Non-Repetitive Surge Current
500
200
100
50
20
10
0
50
20
10
0
1
Transient Voltage Suppressors
1
25
Figure 2. Pulse Derating Curve
2
Number of Cycles at 60Hz
50
Ambient Temperature [ºC]
Reverse Voltage, V
5
Measured at
Stand-Off
Voltage (V mw)
5
75
10
100
T = T max
8.3ms Single Half Sine-Wave
JEDEC Method
10
A
A
125
20
R
SA5V0(C)A - SA170(C)A, Rev. D
Visg = 50m Vp-p
T = 25 C
f = 1.0 MHz
[V]
150
A
50
Measured at
Zero Bias
º
50
100
175
(continued)
200
100
200