TSC SA10A

SA SERIES
Transient Voltage Suppressor Diodes
Voltage Range
5.0 to 170 Volts
500 Watts Peak Power
1.0 Watt Steady State
DO-15
Features
Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
500W surge capability at 10 X 10us waveform, duty cycle:
0.01%
Excellent clamping capability
Low zener impedance
Fast response time: Typically less than 1.0ps from 0 volts to
VBR for unidirectional and 5.0 ns for bidirectional
Typical IR less than 1μA above 10V
High temperature soldering guaranteed: 260°C / 10 seconds
/ .375”,(9.5mm) lead length / 5lbs.,(2.3kg) tension
Mechanical Data
Case: Molded plastic
Lead: Axial leads, solderable per MIL-STDLead: 202, Method 208
Polarity: Color band denotes cathode except
bipolar
Weight: 0.34 gram
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25°C ambient temperature unless otherwise specified.
Type Number
Symbol
Value
Units
Peak Power Dissipation at TA=25OC, Tp=1ms
(Note 1)
PPK
Minimum 500
Watts
Steady State Power Dissipation at TL=75 °C
Lead Lengths .375”, 9.5mm (Note 2)
PD
1.0
Watts
IFSM
70
Amps
VF
3.5
Volts
TJ, TSTG
-55 to + 175
°C
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 3)
Maximum Instantaneous Forward Voltage at
35.0A for Unidirectional Only
Operating and Storage Temperature Range
Notes: 1. Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25OC Per Fig. 2.
Notes: 2. Mounted on Copper Pad Area of 1.6 x 1.6” (40 x 40 mm) Per Fig. 5.
Notes: 3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per Minutes
Notes: 3. Maximum.
Devices for Bipolar Applications
Notes: 1. For Bidirectional Use C or CA Suffix for Types SA5.0 through Types SA170.
Notes: 2. Electrical Characteristics Apply in Both Directions.
- 632 -
RATINGS AND CHARACTERISTIC CURVES (SA SERIES)
FIG.2- PULSE DERATING CURVE
FIG.1- PEAK PULSE POWER RATING CURVE
100
NON-REPETITIVE
PULSE WAVEFORM
SHOWN in FIG.3
TA=250C
10
PPK 5
IMPULSE
EXPONENTIAL
DECAY
O
ld
1
HALF SINE
ld
PPK
ld=7lp
SQUARE
PPK
ld
CURRENT WAVEFORM
0.1
0.1ms
100ms
10ms
1ms
10,000ms
1,000ms
PEAK PULSE POWER (Ppp) or CURRENT (IPPM)
DERATING IN PERCENTAGE, %
PPPM, PEAK PULSE POWER, KW
40
75
50
25
0
0
75
100
125
150
175
200
FIG.4- MAXIMUM NON-REPETITIVE FORWARD SURGE
CURRENT UNIDIRECTIONAL ONLY
150
PEAK VALUE
lPPM
100
lFSM, PEAK FORWARD SURGE CURRENT,
AMPERES
200
PULSE WIDTH (td) is DEFINED
as the POINT WHERE the PEAK
CURRENT DECAYS
to 50% of lPPM
tr=10msec.
PEAK PULSE CURRENT - %
50
TA, AMBIENT TEMPERATURE, C
FIG.3- PULSE WAVEFORM
50
td
0
10
1.0
2.0
3.0
4.0
t, TIME, ms
1.6
1.4
1.2
L=0.375"(9.5mm)
LEAD LENGTHS
0.8
0.6
0.4
0.2
1.6 X 1.6 X .040"
(40 X 40 X 1mm.)
COPPER HEAT SINKS
0
0
25
50
75
100
1
10
NUMBER OF CYCLES AT 60Hz
FIG.5- STEADY STATE POWER DERATING CURVE
1.0
8.3ms Single Half Sine Wave
JEDEC Method
100
HALF VALUE- lPPM
2
10/1000msec. WAVEFORM
as DEFINED by R.E.A.
0
PM(AV), STEADY STATE POWER DISSIPATION,
WATTS
25
o
tp, PULSE WIDTH, sec.
125
150
175
200
o
TL, LEAD TEMPERATURE, C
- 633 -
100
ELECTRICAL CHARACTERISTICS (TA=25OC unless otherwise noted)
Device
SA5.0
SA5.0A
SA6.0
SA6.0A
SA6.5
SA6.5A
SA7.0
SA7.0A
SA7.5
SA7.5A
SA8.0
SA8.0A
SA8.5
SA8.5A
SA9.0
SA9.0A
SA10
SA10A
SA11
SA11A
SA12
SA12A
SA13
SA13A
SA14
SA14A
SA15
SA15A
SA16
SA16A
SA17
SA17A
SA18
SA18A
SA20
SA20A
SA22
SA22A
SA24
SA24A
SA26
SA26A
SA28
SA28A
SA30
SA30A
SA33
SA33A
SA36
SA36A
SA40
SA40A
SA43
SA43A
Breakdown Voltage
VBR
(Volts) (Note 1)
Test
Current
@IT
Stand-Off
Voltage
VWM
Maximum
Reverse Leakage
at VWM
Maximum
Peak Pulse
Current IPPM
Maximum
Clamping
Voltage at IPPM
Min
Max
(mA)
(Volts)
ID (uA)
(Note 2)(Amps)
VC(Volts)
Maximum
Temperature
Coefficient
of VBR mV / OC)
6.40
6.40
6.67
6.67
7.22
7.22
7.78
7.78
8.33
8.33
8.89
8.89
9.44
9.44
10.0
10.0
11.1
11.1
12.2
12.2
13.3
13.3
14.4
14.4
15.6
15.6
16.7
16.7
17.8
17.8
18.9
18.9
20.0
20.0
22.2
22.2
24.4
24.4
26.7
26.7
28.9
28.9
31.1
31.1
33.3
33.3
36.7
36.7
40.0
40.0
44.4
44.4
47.8
47.8
7.30
7.00
8.15
7.37
8.82
7.98
9.51
8.60
10.2
9.21
10.9
9.83
11.5
10.4
12.2
11.1
13.6
12.3
14.9
13.5
16.3
14.7
17.6
15.9
19.1
17.2
20.4
18.5
21.8
19.7
23.1
20.9
24.4
22.1
27.1
24.5
29.8
26.9
32.6
29.5
35.3
31.9
38.0
34.4
40.7
36.8
44.9
40.6
48.9
44.2
54.3
49.1
58.4
52.8
10
10
10
10
10
10
10
10
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
5.0
5.0
6.0
6.0
6.5
6.5
7.0
7.0
7.5
7.5
8.0
8.0
8.5
8.5
9.0
9.0
10.0
10.0
11.0
11.0
12.0
12.0
13.0
13.0
14.0
14.0
15.0
15.0
16.0
16.0
17.0
17.0
18.0
18.0
20.0
20.0
22.0
22.0
24.0
24.0
26.0
26.0
28.0
28.0
30.0
30.0
33.0
33.0
36.0
36.0
40.0
40.0
43.0
43.0
600
600
600
600
400
400
150
150
50
50
25
25
10
10
5.0
5.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
54.0
57.0
46.0
50.0
42.0
46.0
39.0
43.0
36.0
40.0
35.0
38.0
33.0
36.0
31.0
34.0
27.0
30.0
26.0
28.0
23.0
26.3
22.0
24.0
20.3
22.6
19.5
21.0
18.0
20.0
17.0
19.0
16.3
17.9
14.0
16.0
13.0
14.7
12.0
13.4
11.0
12.4
10.0
11.5
9.8
10.8
8.8
9.8
8.1
9.0
7.3
8.1
6.8
7.5
9.60
9.20
11.4
10.3
12.3
11.2
13.3
12.0
14.3
12.9
15.0
13.6
15.9
14.4
16.9
15.4
18.8
17.0
20.1
18.2
22.0
19.9
23.8
21.5
25.8
23.2
26.9
24.4
28.8
26.0
30.5
27.6
32.2
29.2
35.8
32.4
39.4
35.5
43.0
38.9
46.6
42.1
50.1
45.4
53.5
48.4
59.0
53.3
64.3
58.1
71.4
64.5
76.7
69.4
5.0
5.0
5.0
5.0
5.0
5.0
6.0
6.0
7.0
7.0
7.0
7.0
8.0
8.0
9.0
9.0
10.0
10.0
11.0
11.0
12.0
12.0
13.0
13.0
14.0
14.0
16.0
16.0
19.0
17.0
20.0
19.0
21.0
20.0
25.0
23.0
28.0
25.0
31.0
28.0
31.0
30.0
35.0
31.0
39.0
36.0
42.0
39.0
46.0
41.0
51.0
46.0
55.0
50.0
- 634 -
O
ELECTRICAL CHARACTERISTICS (TA=25 C unless otherwise noted)
Device
Breakdown Voltage
VBR
(Volts) (Note 1)
Min
Max
Test
Current
@IT
Stand-Off
Voltage
VWM
Maximum
Reverse Leakage
at VWM
Maximum
Peak Pulse
Current IPPM
Maximum
Clamping
Voltage at IPPM
(mA)
(Volts)
ID (uA)
(Note 2)(Amps)
VC(Volts)
Maximum
Temperature
Coefficient
of VBR mV /OC)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
6.5
7.2
6.1
6.7
5.7
6.3
5.4
6.0
5.0
5.6
4.9
5.4
4.6
5.0
4.2
4.6
3.9
4.3
3.7
4.1
3.4
3.8
3.2
3.5
2.9
3.2
2.6
2.9
2.4
2.7
2.2
2.5
1.9
2.1
2.0
2.0
1.7
1.9
80.3
72.7
85.5
77.4
91.1
82.4
96.3
87.1
103
93.6
107
96.8
114
103
125
113
134
121
139
126
151
137
160
146
179
162
196
177
214
193
230
209
268
243
257
259
304
275
58.0
52.0
63.0
56.0
66.0
61.0
71.0
65.0
78.0
70.0
80.0
71.0
86.0
76.0
94.0
85.0
101
91
105
95
114
103
121
110
135
123
148
133
162
146
175
158
203
184
217
196
230
208
50.0
61.1
1.0
45.0
SA45
50.0
55.3
1.0
45.0
SA45A
53.3
65.2
1.0
48.0
SA48
53.3
58.9
1.0
48.0
SA48A
56.7
69.3
1.0
51.0
SA51
56.7
62.7
1.0
51.0
SA51A
60.0
73.3
1.0
54.0
SA54
60.0
66.3
1.0
54.0
SA54A
64.4
78.7
1.0
58.0
SA58
64.4
71.2
1.0
58.0
SA58A
66.7
81.5
1.0
60.0
SA60
66.7
73.7
1.0
60.0
SA60A
71.1
86.9
1.0
64.0
SA64
71.1
78.6
1.0
64.0
SA64A
77.8
95.1
1.0
70.0
SA70
77.8
86
1.0
70.0
SA70A
88.3
102
1.0
75.0
SA75
88.3
92.1
1.0
75.0
SA75A
86.7
103
1.0
78.0
SA78
86.7
95.8
1.0
78.0
SA78A
94.4
115
1.0
85.0
SA85
94.4
104
1.0
85.0
SA85A
100
122
1.0
90.0
SA90
100
111
1.0
90.0
SA90A
111
136
1.0
100
SA100
111
123
1.0
100
SA100A
122
149
1.0
110
SA110
122
135
1.0
110
SA110A
133
163
1.0
120
SA120
133
147
1.0
120
SA120A
144
176
1.0
130
SA130
144
159
1.0
130
SA130A
167
204
1.0
150
SA150
167
185
1.0
150
SA150A
178
218
1.0
160
SA160
178
197
1.0
160
SA160A
189
231
1.0
170
SA170
189
209
1.0
170
SA170A
Notes:
1. VBR measured after IT applied for 300us, IT = square wave pulse or equivallent.
2. Surge current waveform per Figure 3 and derate per Figure 2.
3. For bipolar types with VWM of 10 Volts and under, the ID limit is doubled.
4. All terms and symbols are consistent ANSI/IEEE C62.35.
- 635 -
TVS APPLICATION NOTES:
Transient Voltage Suppressors may be used at various points in a circuit to provide various degrees of
protection. The following is a typical linear power supply with transient voltage suppressor units placed at
different points. All provide protection of the load.
FIGURE 1
Transient Voltage Suppressors 1 provides maximum protection. However, the system will probably require
replacement of the line fuse(F) since it provides a dominant portion of the series impedance when a surge is
encountered.
However, we do not recommend to use the TVS diode here, unless we can know the electric circuit
impedance and the magnitude of surge rushed into the circuit. Otherwise the TVS diode is easy to be
destroyed by voltage surge.
Transient Voltage Suppressor 2 provides execllent protection of circuitry excluding the transformer(T).
However, since the transformer is a large part of the series impedance, the chance of the line fuse opening
during the surge condition is reduced.
Transient Voltage Suppressor 3 provides the load with complete protection. It uses a unidirectional
Transient Voltage Suppressor, which is a cost advantage. The series impedance now includes the line fuse,
transformer, and bridge rectifier(B) so failure of the line fuse is further reduced. If only Transient Voltage
Suppressor 3 is in use, then the bridge rectifier is unprotected and would require a higher voltage and current
rating to prevent failure by transients.
Any combination of these three, or any one of these applications, will prevent damage to the load. This would
require varying trade-offs in power supply protection versus maintenance(changing the time fuse).
An additional method is to utilize the Transient Voltage Suppressor units as a controlled avalanche bridge.
This reduces the parts count and incorporates the protection within the bridge rectifier.
FIGURE 2
- 636 -