Diodes PSMAJ440A User Manual
A
Features
• 400W Peak Pulse Power Dissipation
• Excellent Clamping Capability
• Fast Response Time
• Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
NEW PRODUCT
Green
PSMAJ440
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
• Terminals: Lead Free Plating (Matte Tin Finish)
Solderable per MIL-STD-202, Method 208
• Polarity Indicator: Cathode Band
• Weight: 0.064 grams (approximate)
Top View Bottom View
e3
Ordering Information (Note 4)
Part Number Case Packaging
PSMAJ440A-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/quality/lead_free.html 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/products/packages.html.
Marking Information
Maximum Ratings (@T
Peak Pulse Power Dissipation
(Non repetitive current pulse derated above T
(Note 5)
Peak Forward Surge Current, 8.3ms Single Half Sine Wave
Superimposed on Rated Load (Note 6)
Steady State Power Dissipation @ TL = +120°C PM
Instantaneous Forward Voltage @ IPP = 25A (Note 6) 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.
= +25°C, unless otherwise specified.)
A
Characteristic Symbol Value Unit
440A
= +25°C, T
A
YWW
P =
PSMAJ440A
Document number: DS36176 Rev. 2 - 2
440A = Product type marking code
= Manufacturers’ code marking
YWW = Date code marking
Y = Last digit of year (ex: 2 for 2012)
WW = Week code (01 to 53)
1ms)
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PPK
I
FSM
(AV)
400 W
40 A
1.0 W
6.5 V
February 2014
© Diodes Incorporated
A
P
P
U
RATING
O
O
Thermal Characteristics
Characteristic Symbol Value Unit
Operating Temperature Range
Storage Temperature Range
T
J
T
STG
Electrical Characteristics (@T
Reverse Standoff
Part Number
Voltage
V
(V)
RWM
= +25°C, unless otherwise specified.)
A
Breakdown
Voltage
@ IT
V
BR
Test
Current
(Note 7)
Min (V) Max (V)
IT (mA) IR (μA) VC (V)
Max. Reverse
Leakage @
V
RWM
Max. Clamping
I
pp
PSMAJ440A 376 418 462 1.0 5.0 602.0 0.66
Notes: 7. VBR measured with IT current pulse = 300µs
100
NEW PRODUCT
10000
T = 25°C
J
F
75
1000
IN %
-55 to +150 °C
-55 to +175 °C
Voltage @
(tp = 10x1000µs)
(see fig 4)
Pulse Current
PSMAJ440
Max. Peak
I
pp
(A)
Marking
Code
440A
LSE DE
EAK
P , PEAK PULSE POWER (kW)
PEAK POWER OR CURRENT
100
10
1.0
PK
50
25
0
0
10 X 1000 Waveform
as defined by REA
50 75 100 125 150 175 200
25
T , AMBIENT TEMPERATURE ( C)
A
Figure 1 Pulse Derating Curve
Non repetitive
pulse waveform
shown in Figure 4
°
T = +25CJ°
100
TAL CAPACITANCE (pF)
10
T
C,T
I , PEAK PULSE CURRENT (%I )
Measured at
f = 1MHz
1.0V Signal
RMS
Bias = 0V
1
1 10 100 1000
DC
V , STANDOFF VOLTAGE (V)
WM
Figure 2 Typical Total Capacitance
Ppp
0.1
0.1 1.0 10 100
t PULSE WIDTH (µs)
p
Figure 3 Pulse Rating Curve
PSMAJ440A
Document number: DS36176 Rev. 2 - 2
1,000 10,000
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t, TIME (ms)
Figure 4 Pulse Waveform
February 2014
© Diodes Incorporated
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