PSMAJ440A
Green
400W SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR
Features Mechanical Data
400W Peak Pulse Power Dissipation Case: SMA
Excellent Clamping Capability Case Material: Molded Plastic. UL Flammability Classification
Fast Response Time Rating 94V-0
Lead-Free Finish; RoHS Compliant (Notes 1 & 2) Moisture Sensitivity: Level 1 per J-STD-020
Halogen and Antimony Free. Green Device (Note 3) Terminals: Lead-Free Plating (Matte Tin Finish)
e3
Solderable per MIL-STD-202, Method 208
Polarity Indicator: Cathode Band
Weight: 0.064 grams (Approximate)
Top View Bottom View
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
PSMAJ440A
Thermal Characteristics
Characteristic Symbol Value Unit
Operating Temperature Range T -55 to +150 C
J
Storage Temperature Range T -55 to +175 C
STG
Electrical Characteristics (@T = +25C, unless otherwise specified.)
A
Breakdown Max. Clamping
Max. Reverse Max. Peak
Voltage
Reverse Standoff Voltage @ Marking
Test
Leakage @ Pulse Current
Voltage V @ I Current Code
BR T I (tp = 10x1000s)
Part Number pp
V I
RWM pp
(Note 7) (see Figure 4)
V (V) Min (V) Max (V) I (mA) I (A) V (V) (A)
RWM T R C
440A
PSMAJ440A 376 418 462 1.0 5.0 602.0 0.66
Notes: 7. V measured with I current pulse = 10 ~ 15 ms.
BR T
100 10000
T = 25C
J
75
1000
50
100
25
10
Measured at
f = 1MHz
10 X 1000 Waveform
1.0V Signal
RMS
as defined by REA
Bias = 0V
DC
0
1
0 25 50 75 100 125 150 175 200
1 10 100 1000
T , AMBIENT TEMPERATURE (C) V , STANDOFF VOLTAGE (V)
A WM
Figure 1 Pulse Derating Curve Figure 2 Typical Total Capacitance
100
T = +25C
J
Non repetitive
pulse waveform
shown in Figure 4
10
1.0
0.1
0.1 1.0 10 100 1,000 10,000
t, TIME (ms)
t PULSE WIDTH (s)
p
Figure 4 Pulse Waveform
Figure 3 Pulse Rating Curve
2 of 4
October 2014
PSMAJ440A
www.diodes.com Diodes Incorporated
Document number: DS36176 Rev. 3 - 2
PEAK PULSE DERATING IN % OF
P , PEAK PULSE POWER (kW)
PK
PEAK POWER OR CURRENT
C , TOTAL CAPACITANCE (pF)
T
I , PEAK PULSE CURRENT (%I )
P pp