Littelfuse SMAJ Series User Manual download pdf

Transient Voltage Suppression Diodes

Speciﬁcations are subject to change without notice.

Revised: 01/20/14

Surface Mount – 400W > SMAJ series

Description

Agency Approvals

AGENCY AGENCY FILE NUMBER

E230531

Features

Maximum Ratings and Thermal Characteristics

=25°C unless otherwise noted)

Parameter Symbol Value Unit

Peak Pulse Power Dissipation at

=25ºC by 10/1000µs Waveform

(Fig.2)(Note 1), (Note 2)

PPM

400 W

Power Dissipation on Inﬁnite Heat

Sink at T

=50°C

M(AV)

3.3 W

Peak Forward Surge Current, 8.3ms

Single Half Sine Wave (Note 3)

FSM

40 A

Maximum Instantaneous Forward

Voltage at 25A for Unidirectional

Only (Note 4)

3.5V/6.5 V

Operating Junction and Storage

Temperature Range

, T

STG

-55 to 150 °C

Typical Thermal Resistance Junction

to Lead

uJL

30 °C/W

Typical Thermal Resistance Junction

to Ambient

uJA

120 °C/W

Notes:

1. Non-repetitive current pulse, per Fig.4 and derated above T

=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

< 3.5V for V

200V and V

< 6.5V for V

201V.

The SMAJ series is designed speciﬁcally to protect

sensitive electronic equipment from voltage transients

induced by lightning and other transient voltage events.

Applications

TVS devices are ideal for the protection of I/O Interfaces,

bus and other vulnerable circuits used in Telecom,

Computer, Industrial and Consumer electronic applications.

• Excellent clamping

capability

• Typical I

less than 1µA

above 12V

• For surface mounted

applications to optimize

board space

• Low prole 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

min

• Glass passivated junction

• Low inductance

• High temperature

soldering: 260°C/40

seconds at terminals

•

= V

@25°C × (1+αT

x (T

- 25))

(αT: Temperature Coefﬁcient)

• Plastic package has

underwriters laboratory

ﬂammability 94V-O

• Meet MSL level1, per

J-STD-020, LF maximum

peak of 260°C

• Matte tin lead–free Plated

• Halogen free and RoHS

compliant

RoHS

SMAJ Series

Uni-directional

Bi-directional

Functional Diagram

Bi-directional

Uni-directional

Cathode

Anode

Additional Information

Datasheet

Samples

Resources

1 2 3 4 5 6

Summary of Contents

Page 1 - SMAJ Series

Page 2 - Electrical Characteristics (T

Page 3 - I-V Curve Characteristics

Page 4 - (Continued)

Page 5 - DO-214AC (SMA)

Page 6 - SMAJ XXX C A

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Littelfuse SMAJ Series User Manual

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