Automotive Transient Voltage Suppression Diodes
Surface Mount – 400W > P4SMA Automotive Series
RoHS
P4SMA Automotive Series
Description
The P4SMA Automotive series is designed specifically
to protect sensitive automotive equipment from voltage
transients.
Features
• Fast response time:
typically less than 1.0ps
from 0V to BV min
• Excellent clamping
capability
• Low incremental surge
resistance
• Typical I
R
less than 1µA
above 12V
ΔV
BR
= 0.1% x V
BR
@25°C x ΔT
• High Temperature
soldering guaranteed:
• Glass passivated chip
260°C/40 seconds at
junction
terminals
• 400W peak pulse power
• Plastic package has
capability at 10×1000µs
Underwriters Laboratory
waveform, repetition rate
Flammability 94V-O
(duty cycles):0.01%
• Matte Tin Lead–free Plated
• Halogen-Free
• RoHS compliant
• For surface mounted
applications to optimize
board space
• Low profile package
• Built-in strain relief
• Typical maximum
temperature coefficient
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E230531
Maximum Ratings and Thermal Characteristics
(T
A
=25
O
C unless otherwise noted)
Parameter
Peak Pulse Power Dissipation at
T
A
=25ºC by 10x1000µs waveform
(Fig.1)(Note 1), (Note 2)
Power Dissipation on infinite heat
sink at T
A
=50
O
C
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward
Voltage at 25A for Unidirectional
only
Operating Junction and Storage
Temperature Range
Typical Thermal Resistance Junction
to Lead
Typical Thermal Resistance Junction
to Ambient
Symbol
P
PPM
P
M(AV)
I
FSM
V
F
T
J
, T
STG
R
uJL
R
uJA
Value
400
3.3
40
3.5V
-65 to 150
30
120
Unit
W
W
A
V
°C
°C/W
°C/W
Applications
TVS devices are ideal for the protection of I/O Interfaces,
V
CC
bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic applications.
Notes:
1. Non-repetitive current pulse , per Fig. 3 and derated above T
A
= 25
O
C per Fig. 2 .
2. Mounted on 0.2x0.2” (5.0 x 5.0mm) copper pad to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
device only, duty cycle=4 per minute maximum.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/P4SMAAUTO.html for current information.
P4SMA Automotive Series
Revised: August 30, 2009 9:30 AM
P4SMA Automotive Series
Automotive Transient Voltage Suppression Diodes
Surface Mount – 400W > P4SMA Series
Electrical Characteristics
Part
Number
(Uni)
Part
Number
(Bi)
Marking
UNI
BI
Reverse
Stand off
Voltage V
R
(Volts)
10.20
11.10
12.80
13.60
15.30
17
.10
18.80
20.50
23.10
25.60
28.20
30.80
33.30
36.80
40.20
Breakdown
Voltage V
BR
(Volts) @ I
T
MIN
11.40
12.40
14.30
15.20
17
.10
19.00
20.90
22.80
25.70
28.50
31.40
34.20
37
.10
40.90
44.70
MAX
12.60
13.70
15.80
16.80
18.90
21.00
23.10
25.20
28.40
31.50
34.70
37
.80
41.00
45.20
49.40
Maximum Maximum Maximum
Test
Agency
Peak
Reverse
Current Clamping
Approval
Voltage V
C
Pulse
Leakage I
R
I
T
@ I
pp
Current I
pp
@ V
R
(mA)
(V)
(A)
(µA)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
16.7
18.2
21.2
22.5
25.5
27
.7
30.6
33.2
37
.5
41.4
45.7
49.9
53.9
59.3
64.8
24.6
22.5
19.3
18.2
16.1
14.8
13.4
12.3
10.9
9.9
9.0
8.2
7
.6
6.9
6.3
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
P4SMA12AAUTO P4SMA12CAAUTO 12AA 12CA
P4SMA13AAUTO P4SMA13CAAUTO 13AA 13CA
P4SMA15AAUTO P4SMA15CAAUTO 15AA 15CA
P4SMA16AAUTO P4SMA16CAAUTO 16AA 16CA
P4SMA18AAUTO P4SMA18CAAUTO 18AA 18CA
P4SMA20AAUTO P4SMA20CAAUTO 20AA 20CA
P4SMA22AAUTO P4SMA22CAAUTO 22AA 22CA
P4SMA24AAUTO P4SMA24CAAUTO 24AA 24CA
P4SMA27AAUTO P4SMA27CAAUTO 27AA 27CA
P4SMA30AAUTO P4SMA30CAAUTO 30AA 30CA
P4SMA33AAUTO P4SMA33CAAUTO 33AA 33CA
P4SMA36AAUTO P4SMA36CAAUTO 36AA 36CA
P4SMA39AAUTO P4SMA39CAAUTO 39AA 39CA
P4SMA43AAUTO P4SMA43CAAUTO 43AA 43CA
P4SMA47AAUTO P4SMA47CAAUTO 47AA 47CA
The avaliable parts are “A” type only, the parts without A (V
BR
is ± 10%) is not avaliable.
P4SMA Automotive Series
Revised: August 30, 2009 9:24 AM
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/P4SMAAUTO.html for current
information.
Automotive Transient Voltage Suppression Diodes
Surface Mount – 400W > P4SMA Automotive Series
Ratings and Characteristic Curves
(T =25°C unless otherwise noted)
A
10
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
P
PPM
-Peak Pulse Power (kW)
100
80
60
40
20
0
1
0.2x0.2" (5.0x5.0mm)
0.1
0.000001
Copper Pad Area
0.00001
0.0001
0.001
0
25
50
75
100
125
150
175
t
d
-Pulse Width (sec.)
T
A
-Ambient temperature (ºC)
Figure 3 - Pulse Waveform
150
I
PPM
- Peak Pulse Current, % I
RSM
tr=10µsec
Peak Value
IPPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
Figure 4 - Typical Junction Capacitance
10000
Bi-directional V=0V
1000
Cj (pF)
Uni-directional @V
R
Uni-directional V=0V
100
Half Value
IPPM
IPPM
2
( )
10/1000µsec. Waveform
as defined by R.E.A
100
Bi-directional @V
R
50
10
0
td
Tj=25ºC
f=1.0MHz
Vsig=50mVp-p
0
1.0
2.0
t-Time (ms)
3.0
4.0
1
1.0
10.0
100.0
1000.0
V
BR
- Reverse Breakdown Voltage (V)
Figure 5 - Steady State Power Dissipation Derating Curve
1.2
Figure 6 - Maximum Non-Repetitive Forward Surge
Current Uni-Directional Only
45
I
FSM
- Peak Forward Surge Current (A)
P
M(AV)
, Steady State Power Dissipation
(W)
1
0.8
0.6
0.4
0.2
0
0
25
50
75
100
125
150
175
T
A
- Ambient Temperature (ºC)
40
35
30
25
20
15
10
5
0
1
10
Number of Cyles at 60 Hz
100
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/P4SMAAUTO.html for current information.
P4SMA Automotive Series
Revised: August 30, 2009 9:30 AM
P4SMA Automotive Series
Figure 1 - Peak Pulse Power Rating
Figure 2 - Pulse Derating Curve
Automotive Transient Voltage Suppression Diodes
Surface Mount – 400W > P4SMA Series
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (min to max) (t
s
)
Average ramp up rate (Liquidus Temp
(T
L
) to peak
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Time (min to max) (t
s
)
Lead–free assembly
150°C
200°C
60 – 180 secs
3°C/second max
3°C/second max
217°C
60 – 150 seconds
260
+0/-5
°C
20 – 40 seconds
6°C/second max
8 minutes Max.
280°C
Temperature (T)
T
P
Ramp-up
t
p
Critical Zone
T
L
to T
P
T
L
T
s(max)
t
L
T
s(min)
Ramp-down
Preheat
t
s
25˚C
t 25˚C to Peak
Time (t)
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
Physical Specifications
Weight
Case
Polarity
Terminal
0.002 ounce, 0.061 gram
JEDEC DO-214AC. Molded plastic body
over glass passivated junction
Color band denotes positive end
(cathode) except bidirectional
Matte Tin-plated leads, Solderable per
JESD22-B102D
Environmental Specifications
Temperature Cycle
Pressure Cooker
High Temp. Storage
HTRB
Thermal Shock
JESD22-A104
JESD 22-A102
JESD22-A103
JESD22-A108
JESD22-A106
Dimensions
DO-214AC (SMA)
Cathode Band
Dimensions
A
B
C
D
Inches
Min
0.049
0.157
0.100
0.078
0.030
-
0.194
0.006
0.070
0.082
-
0.082
Max
0.065
0.177
0.110
0.090
0.060
0.008
0.208
0.012
-
-
0.090
-
Millimeters
Min
1.250
3.990
2.540
1.980
0.780
-
4.930
0.152
1.800
2.100
-
2.100
Max
1.650
4.500
2.790
2.290
1.520
0.203
5.280
0.305
-
-
2.300
-
A
B
H
D
F
G
J
K
L
C
E
F
G
H
I
J
K
L
E
I
Solder Pads
(all dimensions in mm)
P4SMA Automotive Series
Revised: August 30, 2009 9:24 AM
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/P4SMAAUTO.html for current
information.
Automotive Transient Voltage Suppression Diodes
Surface Mount – 400W > P4SMA Automotive Series
Part Numbering System
P4SMA XXX C A AUTO
Part Marking System
Cathode Band
5% VOLTAGE TOLERANCE
BI-DIRECTIONAL
VOLTAGE
SERIES
F
Littelfuse Logo
Marking Code
Packaging
Part number
P4SMAxxxXXAUTO
Component
Package
DO-214AC
Quantity
5000
Packaging
Option
Tape & Reel – 12mm/13” tape
Packaging Specification
EIA STD RS-481
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/P4SMAAUTO.html for current information.
P4SMA Automotive Series
Revised: August 30, 2009 9:30 AM
P4SMA Automotive Series
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