Diodes PSMAJ400-C-A User Manual
(AV)
Features
• 400W Peak Pulse Power Dissipation
• Unidirectional and Bidirectional Versions Available
• Excellent Clamping Capability
• Fast Response Time
• Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
ADVANCE INFORMATION
Ordering Information (Note 4)
Green
PSMAJ400(C)A
400W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR
Mechanical Data
• Case: SMA
• Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020
Top View
• Terminals: Lead Free Plating (Matte Tin Finish). Solderable per
MIL-STD-202, Method 208
• Polarity Indicator: Cathode Band (Note: Bi-directional devices
have no polarity indicator.)
• Weight: 0.064 grams (approximate)
SMA
Bottom View
Part Number Case Packaging
PSMAJ400(C)A-13 SMA 5000/Tape & Reel
Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
4. For packaging details, go to our website at http://www.diodes.com.
Marking Information
YWW
400x
Maximum Ratings (@T
= +25°C, unless otherwise specified.)
A
Characteristic Symbol Value Unit
Peak Pulse Power Dissipation
(Non repetitive current pulse derated above T
= +25° C, T
A
P =
Peak Forward Surge Current, 8.3ms Single Half Sine Wave Superimposed
on Rated Load (Notes 6 & 7)
Steady State Power Dissipation @ TL = +120°C PM
Instantaneous Forward Voltage @ IPP = 25A (Notes 6 & 7) VF
Notes: 5. Non-repetitive current pulse, per Fig. 4 and derated above TA = +25° C, per Fig.1.
6. Measured with 8.3ms single half sine-wave. Duty cycle = 4 pulses per minute maximum.
7. Unidirectional units only.
PSMAJ400(C)A
Document number: DS35914 Rev. 3 - 2
400x = Product type marking code
400C – BI
400A – UNI
= Manufacturers’ code marking
YWW = Date code marking
Y = Last digit of year (ex: 2 for 2012)
WW = Week code (01 to 53)
P
I
FSM
PK
1ms) (Note 5)
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www.diodes.com
400 W
40 A
1.0 W
6.5 V
November 2012
© Diodes Incorporated
pp
P
P
U
RATIN
G IN
O
P
F
O
RWAR
URG
C
U
R
RENT
PSMAJ400(C)A
Thermal Characteristics
Characteristic Symbol Value Unit
Operating Temperature Range
Storage Temperature Range
T
J
T
STG
Electrical Characteristics (@T
Part Number
Add C For
Bidirectional
(Note 8)
Reverse
Standoff
Voltage
V
(V)
RWM
Breakdown
V
@ IT (Note 9)
BR
Min (V) Max (V)
= +25°C, unless otherwise specified.)
A
Voltage
Test
Current
Max. Reverse
Leakage @ V
IT (mA) IR (μA) VC (V)
RWM
Max. Clamping
Voltage @ I
PSMAJ400(C)A 342 380 420 1.0 5.0 548.0 0.73 400C 400A
Notes: 8. Suffix C denotes Bi-directional device.
9. V
measured with IT current pulse = 300μs
BR
100
ADVANCE INFORMATION
F
%
75
100
10
-55 to +150
-55 to +175
Max. Peak Pulse
pp
Current
I
Marking Code
(A) BI- UNI-
T = +25C
°
J
Non repetitive
pulse waveform
shown in Fig. 3
°C
°C
50
LSE DE
25
PEAK POWER OR CURRENT
EAK
10 X 1000 Waveform
as defined by REA
0
0
50 75 100 125 150 175 200
25
T , AMBIENT TEMPERATURE ( C)
A
Figure 1 Pu lse Deratin g C ur ve
Ppp
I , PEAK PULSE CURRENT (%I )
1.0
PK
P , PEAK PULSE POWER (kW)
0.1
0.1 1.0 10 100
°
t PULSE WIDTH (µs)
p
1,000 10,000
Figure 2 P ulse Rating Curve
60
(A)
50
40
E
30
D S
20
EAK
10
FSM
I,
0
t, TIME (ms)
Figure 3 Pulse Waveform
2
5
10
20
50
1001
NUMBER OF CYCLES AT 60Hz
Figure 4 Max i m um Non-Repe t it ive Surge C ur r e nt
PSMAJ400(C)A
Document number: DS35914 Rev. 3 - 2
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www.diodes.com
November 2012
© Diodes Incorporated
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