Revision March 1,2022 www.unsemi.com.tw
For technical questions, contact: tech@unsemi.com.tw
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
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The P4SMA series is designed specifically to protect sensitive electronic
equipment from voltage transients induced by lightning and other transient
voltage events
For surface mounted applications in order to optimize board space
Low leakage
Uni and Bidirectional unit
Glass passivated junction
Low inductance
Excellent clamping capability
Typical I
R less than 5A above 10V
400W Peak power capability at 10 × 1000µs waveform Repetition
rate (duty cycle):0.01%
Fast response time: typically less than 1.0ps from 0 Volts to V min
High Temperature soldering: 260°C/40 seconds at terminals
 = 0.1% ×V
Plastic package has Underwriters Laboratory Flammability 94V-0
Matte tin lead–free Plated
Halogen free and RoHS compliant
Typical failure mode is short from over-specified voltage or current
Whisker test is conducted based on JEDEC JESD201A per its table 4a and 4c
IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact)
ESD protection of data lines in accordance with IEC 61000-4-2 (IEC801-2)
EFT protection of data lines in accordance with IEC 61000-4-4 (IEC801-4)
P4SMA Series
TVS devices are ideal for the protection of I/O interfaces, V bus
and other vulnerable circuits used in Telecom, Computer, Industrial
and Consumer electronic applications.
Features
Description
Uni-directional Bi-directional
Applications
ROHS
Surface Mount Transient Voltage Suppressors (TVS)
6.8 To 600V 400W
www.unsemi.com.tw
Cathode
Bi-directional
Anode
Uni-direction
Notes:
1. Non-repetitive current pulse, per Fig. 3 and derated above T = 25°C per Fig. 2.
2. Mounted on 5.0mm x 5.0mm (0.03mm thick) Copper Pads to each terminal.
3. 8.3ms single half sine-wave, or equivalent square wave, Duty cycle = 4 pulses per minutes maximum.
4. V < 3.5V for V < 200V and V< 6.5V for V > 201V.
400
See Next Table
1.0
40
3.5/5.0
-55 to +150
-40 to +125
P
I
P()
I
V
T ,T
T
Peak Pulse Power Dissipation with a 10/1000µs waveform (Fig.1)(Note1), (Note 2)
Peak Pulse Current with a 10/1000µs waveform.(Note1,Fig.3)
Power dissipation on infinite heatsink at T = 75℃
Peak Forward Surge Current, 8.3ms Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward Voltage at 25A for Unidirectional Only (Note 4)
Junction and storage temperature range
Operating temperature range
W
A
W
A
V
°C
°C
Parameter Symbol Value
Unit
Maximum Ratings (TA =25℃ unless otherwise noted)
Functional Diagram
Revision March 1,2022 www.unsemi.com.tw
For technical questions, contact: tech@unsemi.com.tw
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
2/6
Surface Mount Transient Voltage Suppressors (TVS)
ROHS
6.8 To 600V 400W
P4SMA Series
Part Number
Uni Bi
Reverse
Stand-Off
Voltage
V(V)
Breakdown
Voltage V(V)
@I
Maximum
Clamping
Voltage V
@I(V)
Maximum
Peak
Pulse
Current
I(A)
Maximum
Reverse
Leakage I
@V

Test
Current
I(mA)
MIN MAX
Marking
Uni Bi
5.8
6.4
7.0
7.8
8.6
9.4
10.2
11.1
12.8
13.6
15.3
17.1
18.8
20.5
23.1
25.6
28.2
30.8
33.3
36.8
40.2
43.6
47.8
53.0
58.1
64.1
70.1
77.8
85.5
94.0
102.0
111.0
128.0
136.0
145.0
154.0
171.0
185.0
214.0
256.0
299.3
324.9
342.0
376.2
427.5
444.6
470.3
513.0
10
10
10
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1000
500
200
50
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
10.5
11.3
12.1
13.4
14.5
15.6
16.7
18.2
21.2
22.5
25.2
27.7
30.6
33.2
37.5
41.4
45.7
49.9
53.9
59.3
64.8
70.1
77.0
85.0
92.0
103.0
113.0
125.0
137.0
152.0
165.0
179.0
207.0
219.0
234.0
245.0
274.0
328.0
344.0
414.0
482.0
524.4
562.0
607.2
690.0
717.6
759.0
828.0
6V8A
7V5A
8V2A
9V1A
10A
11A
12A
13A
16A
15A
18A
20A
22A
24A
27A
30A
33A
36A
39A
43A
47A
51A
56A
62A
68A
75A
82A
91A
100A
110A
120A
130A
150A
160A
170A
180A
200A
220A
250A
300A
350A
380A
400A
440A
500A
520A
550A
600A
6V8C
TV5C
8V2C
9V1C
10C
11C
12C
13C
15C
16C
18C
20C
22C
24C
27C
30C
33C
36C
39C
43C
47C
51C
56C
62C
68C
75C
82C
91C
100C
110C
120C
130C
150C
160C
170C
180C
200C
220C
250C
300C
350C
380C
400C
440C
500C
520C
550C
600C
6.46
7.13
7.79
8.65
9.50
10.45
11.40
12.35
14.25
15.20
17.10
19.00
20.90
22.80
25.65
28.50
31.35
34.20
37.05
40.85
44.65
48.45
53.20
58.90
64.60
71.25
77.90
86.45
95.00
104.50
114.00
123.50
142.50
152.00
161.50
171.00
190.00
209.00
237.50
285.00
332.50
361.00
380.00
418.00
475.00
494.00
522.50
570.00
7.14
7.88
8.61
9.56
10.50
11.55
12.60
13.65
15.75
16.80
18.90
21.00
23.10
25.20
28.35
31.50
34.65
37.80
40.95
45.15
49.35
53.55
58.80
65.10
71.40
78.75
86.10
95.55
105.00
115.50
126.00
136.50
157.50
168.00
178.50
189.00
210.00
231.00
262.50
315.00
367.50
399.00
420.00
462.00
525.00
546.00
577.50
630.00
Electrical Characteristics(TA=25℃ unless otherwise noted) (Continue)
Note:
1. Suffix 'A ' denotes 5% tolerance device. Without 'A' denotes 10% tolerance device
2. Add suffix 'C 'or ' CA ' after part number to specify Bi-directional devices
3. For Bi-Directional devices having V of 10 volts and under, the I limit is double
P4SMA6.8A
P4SMA7.5A
P4SMA8.2A
P4SMA9.1A
P4SMA10A
P4SMA11A
P4SMA12A
P4SMA13A
P4SMA15A
P4SMA16A
P4SMA18A
P4SMA20A
P4SMA22A
P4SMA24A
P4SMA27A
P4SMA30A
P4SMA33A
P4SMA36A
P4SMA39A
P4SMA43A
P4SMA47A
P4SMA51A
P4SMA56A
P4SMA62A
P4SMA68A
P4SMA75A
P4SMA82A
P4SMA91A
P4SMA100A
P4SMA110A
P4SMA120A
P4SMA130A
P4SMA150A
P4SMA160A
P4SMA170A
P4SMA180A
P4SMA200A
P4SMA220A
P4SMA250A
P4SMA300A
P4SMA350A
P4SMA380A
P4SMA400A
P4SMA440A
P4SMA500A
P4SMA520A
P4SMA550A
P4SMA600A
P4SMA6.8CA
P4SMA7.5CA
P4SMA8.2CA
P4SMA9.1CA
P4SMA10CA
P4SMA11CA
P4SMA12CA
P4SMA13CA
P4SMA15CA
P4SMA16CA
P4SMA18CA
P4SMA20CA
P4SMA22CA
P4SMA24CA
P4SMA27CA
P4SMA30CA
P4SMA33CA
P4SMA36CA
P4SMA39CA
P4SMA43CA
P4SMA47CA
P4SMA51CA
P4SMA56CA
P4SMA62CA
P4SMA68CA
P4SMA75CA
P4SMA82CA
P4SMA91CA
P4SMA100CA
P4SMA110CA
P4SMA120CA
P4SMA130CA
P4SMA150CA
P4SMA160CA
P4SMA170CA
P4SMA180CA
P4SMA200CA
P4SMA220CA
P4SMA250CA
P4SMA300CA
P4SMA350CA
P4SMA380CA
P4SMA400CA
P4SMA440CA
P4SMA500CA
P4SMA520CA
P4SMA550CA
P4SMA600CA
38.10
35.40
33.06
29.85
27.59
25.64
23.95
21.98
18.87
17.78
15.87
14.44
13.07
12.05
10.67
9.66
8.75
8.02
7.42
6.75
6.17
5.71
5.19
4.71
4.35
3.88
3.54
3.20
2.92
2.63
2.42
2.23
1.93
1.83
1.71
1.63
1.46
1.22
1.16
0.97
0.83
0.76
0.72
0.66
0.58
0.56
0.53
0.48