SMAJ30A Datasheet, PDF (1/6 Pages) Littelfuse – Transient Voltage Suppression Diodes Surface Mount – 400W > SMAJ series

Transient Voltage Suppression Diodes
Surface Mount – 400W > SMAJ series
SMAJ Series
RoHS
Uni-directional
Bi-directional
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E230531
Maximum Ratings and Thermal Characteristics
(T_A=25°C unless otherwise noted)
Parameter
Symbol Value Unit
Peak Pulse Power Dissipation at
T_A=25ºC by 10x1000µs Waveform
P_PPM
400
W
(Fig.2)(Note 1), (Note 2)
Power Dissipation on Infinite Heat
Sink at T_A=50°C
P_M(AV)
3.3
W
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
I_FSM
40
A
Maximum Instantaneous Forward
Voltage at 25A for Unidirectional
Only (Note 4)
V_F
3.5V/6.5 V
Operating Junction and Storage
Temperature Range
T_J, T_STG -65 to 150 °C
Typical Thermal Resistance Junction
to Lead
R_uJL
30
°C/W
Typical Thermal Resistance Junction
to Ambient
R_uJA
120 °C/W
Notes:
1. Non-repetitive current pulse, per Fig.4 and derated above T_A=25ºC per Fig. 3.
2. Mounted on 5.0x5.0mm copper pad to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
device only.
4. V_F < 3.5V for V_BR <_ 200V and V_F< 6.5V for V_BR >_ 201V.
Functional Diagram
Description
The SMAJ series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
• Excellent clamping
capability
• Typical I_R less than 1µA
above 12V
• For surface mounted
applications to optimize
board space
• Low profile package
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is conducted
based on JEDEC
JESD201A per its table 4a
and 4c
• IEC-61000-4-2 ESD
15kV(Air), 8kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2 (IEC801-2)
• EFT protection of data
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Built-in strain relief
• 400W Peak pulsepower
capability at 10 × 1000µs
waveform, repetition rate
(duty cycle): 0.01%
• Fast response time:
typically less than 1.0ps
from 0 Volts to V_BR min
• Glass passivated junction
• Low inductance
• H igh temperature
soldering: 260°C/40
seconds at terminals
• Typical maximum
temperature coefficient
ΔV_BR = 0.1% × V_BR@25°C
× ΔT
• Plastic package has
underwriters laboratory
flammability 94V-O
• Matte tin lead–free Plated
• Halogen free and RoHS
compliant
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.
Bi-directional
Cathode
Uni-directional
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/13
Anode