SMAJ530 Datasheet, PDF (1/4 Pages) General Semiconductor – SURFACE MOUNT TRANSZORB™ TRANSIENT VOLTAGE SUPPRESSOR

SMAJ530 & SMAJ550
Vishay General Semiconductor
Surface Mount TRANSZORB^® Transient Voltage Suppressors
DO-214AC (SMA)
PRIMARY CHARACTERISTICS
V_BR
P_PPM
P_D
I_FSM
T_J max.
530 V, 550 V
300 W
2.5 W
40 A
150 °C
TYPICAL APPLICATIONS
Use in sensitive electronics protection against voltage
transients induced by inductive load switching and
lighting on ICs, MOSFET, signal lines of sensor units
for consumer, computer, industrial, automotive and
telecommunication.
MECHANICAL DATA
Case: DO-214AC (SMA)
Molding compound meets UL 94 V-0 flammability
rating
Base P/N-E3 - RoHS compliant, commercial grade
Base P/NHE3 - RoHS compliant, high reliability/
automotive grade (AEC Q101 qualified)
Terminals: Matte tin plated leads, solderable per
J-STD-002 and JESD22-B102
E3 suffix meets JESD 201 class 1A whisker test, HE3
suffix meets JESD 201 class 2 whisker test
Polarity: Color band denotes cathode end
FEATURES
• Glass passivated chip junction
• Available in uni-directional polarity only
• Excellent clamping capability
• Very fast response time
• Low incremental surge resistance
• Meets MSL level 1, per J-STD-020, LF maximum
peak of 260 °C
• Solder dip 260 °C, 40 s
• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
APPLICATION NOTES
• Respect thermal resistance (PCB Layout) - as the
temperature coefficient also contributes to the
clamping voltage
• Select minimum breakdown voltage, so you get
acceptable power dissipation and PCB tie point
temperature
• Devices with higher breakdown voltage will have a
shorter conduction time and will dissipate less
power
• Clamping voltage is influenced by internal resistance
- design approximation is 7 V per 100 mA slope
• Keep temperature of TVS lower than TOPSwitch^®
as a recommendation
• Maximum current is determined by the maximum
T_J and can be higher than 300 mA
• Contact supplier for different clamping voltage/
current arrangements
• Minimum breakdown voltage can be customized for
other applications. Contact supplier
• TOPSwitch is a registered trademark of Power
Integrations, Inc.
MAXIMUM RATINGS (T_A = 25 °C unless otherwise noted)
PARAMETER
SYMBOL
Device marking code
Power dissipation on infinite heatsink ⁽³⁾
Peak pulse power dissipation ^(1)(2)(4) (Fig. 1)
P_D
P_PPM
Stand-off voltage
V_WM
Operating junction and storage temperature range
T_J, T_STG
Notes:
(1) Non repetitive current pulse per Fig. 3 and derated above 25 °C per Fig. 2
(2) Mounted on 5.0 mm² copper pads to each terminal
(3) Lead temperature at T_L = 75 °C
(4) Peak pulse power waveform is 10/1000 µs
SMAJ530
SMAJ550
HD
SB
2.5
300
477
495
- 55 to + 150
UNIT
W
W
V
°C
Document Number: 88391 For technical questions within your region, please contact one of the following:
Revision: 21-Oct-08
[e-mail], [e-mail], [e-mail]
www.vishay.com
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