WTE
POWER SEMICONDUCTORS
P4SMAJ SERIES
Pb
400W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR
Features
Glass Passivated Die Construction
400W Peak Pulse Power Dissipation
5.0V – 170V Standoff Voltage
Uni- and Bi-Directional Versions Available
Excellent Clamping Capability
Fast Response Time
Plastic Case Material has UL Flammability
Classification Rating 94V-O
B
D
A
F
C
H
G
E
Mechanical Data
Case: SMA/DO-214AC, Molded Plastic
Terminals: Solder Plated, Solderable
per MIL-STD-750, Method 2026
Polarity: Cathode Band Except Bi-Directional
Marking: Device Code
Weight: 0.064 grams (approx.)
Lead Free: For RoHS / Lead Free Version,
Add “-LF” Suffix to Part Number, See Page 6
SMA/DO-214AC
Dim
Min
Max
A
2.50
2.90
B
4.00
4.60
C
1.20
1.60
D
0.152
0.305
E
4.80
5.28
F
2.00
2.44
G
0.051
0.203
H
0.76
1.52
All Dimensions in mm
“C” Suffix Designates Bi-directional Devices
“A” Suffix Designates 5% Tolerance Devices
No Suffix Designates 10% Tolerance Devices
Maximum Ratings and Electrical Characteristics
Characteristic
Peak Pulse Power Dissipation at T
A
= 25°C (Note 1, 2, 5) Figure 3
Peak Forward Surge Current (Note 3)
Peak Pulse Current on 10/1000µS Waveform (Note 1) Figure 4
Steady State Power Dissipation (Note 4)
Typical Thermal Resistance ,Junction to Lead (Note 6)
Typical Thermal Resistance, Junction to Ambient (Note 6)
Operating and Storage Temperature Range
@T
A
=25°C unless otherwise specified
Symbol
P
PPM
I
FSM
I
PPM
P
M(AV)
R
θJL
R
θJA
T
j
, T
STG
Value
400 Minimum
40
See Table 1
1.0
30
120
-55 to +150
Unit
W
A
A
W
°C/W
°C/W
°C
Note: 1. Non-repetitive current pulse per Figure 4 and derated above T
A
= 25°C per Figure 1.
2. Mounted on 5.0mm
2
copper pad to each terminal.
3. 8.3ms single half sine-wave duty cycle = 4 pulses per minutes maximum.
4. Lead temperature at 75°C.
5. Peak pulse power waveform is 10/1000µS.
6. Mounted on minimum recommended pad layout.
P4SMAJ SERIES
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© 2006 Won-Top Electronics
100
10000
T
j
= 25
°
C
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT
75
C
J
, JUNCTION CAPACITANCE (pF)
1000
Unidirectional
50
Bidirectional
100
25
10 X 1000 Waveform
as defined by REA
0
0
25
50
75
100 125 150 175 200
T
A
, AMBIENT TEMPERATURE (
°
C)
Fig. 1 Pulse Derating Curve
10
1
10
100
1000
V
WM
, STANDOFF VOLTAGE (V)
Fig. 2 Typical Junction Capacitance
100
P
d
, PEAK PULSE POWER (kW)
T
j
= 25
°
C
Non Repetitive
Pulse Waveform
Shown in Fig. 4
10
1.0
0.1
0.1
1.0
10
100
1000
10000
t
p
PULSE WIDTH (
m
s)
Fig. 3 Pulse Rating Curve
I
P
, PEAK PULSE CURRENT (%I
pp
)
t
r
= 10
µ
s
100
Peak Value I
pp
Half Value I
pp
/2
50
t
p
0
10 X 1000 Waveform
as defined by R.E.A.
0
1
2
3
t, TIME (ms)
Fig. 4 Pulse Waveform
P4SMAJ SERIES
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© 2006 Won-Top Electronics
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