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See Technical Specifications

SMAJ40CA

400W Surface Mount Transient Voltage Suppressor

Manufacturer:

Littelfuse
Mfr.Part #:

SMAJ40CA
Datasheet:

SMAJ40CA Datasheet (PDF)
Series:

SMAJ
Type:

Zener
Bidirectional Channels:

1
Voltage - Reverse Standoff (Typ):

40V
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SMAJ40CA General Description

The SMAJ40CA is a TVS diode designed to clamp voltage spikes and transients to a safe level, thereby protecting downstream components from damage caused by voltage surges. This specific diode is a member of the SMAJ series, which indicates its package type and characteristics.

Key Features

Halogen-Free and RoHS compliant
For surface mounted applications in order to optimize board space
Low profile package
Built-in strain relief
Glass passivated junction
Low Inductance
Excellent clamping capability
Repetition Rate (duty cycle): 0.01%
Fast response time: typically less than 1.0ps from 0 Volts to V(BR) for unidirectional types.
Typical IR less than 1mA above 10V
High temperature soldering: 250 degrees C/10 seconds at terminals
Plastic package has Underwriters Laboratory Flammability 94V-O

Application

Power Supplies: TVS diodes are often used in power supply circuits to protect against voltage spikes from the power source.
Communication Equipment: In telecommunications equipment to protect against lightning-induced voltage surges and other transient events.
Data and Signal Lines: TVS diodes are used to protect data and signal lines (such as USB, Ethernet, and HDMI) from voltage transients that can damage connected devices.
Industrial Control Systems: In industrial control systems to safeguard sensitive components and microcontrollers from voltage surges in noisy industrial environments.
Automotive Electronics: In automotive electronics to protect against voltage transients caused by load dumps and other electrical events.
Consumer Electronics: TVS diodes are used in various consumer electronic devices to protect against electrostatic discharge (ESD) and voltage spikes.

Specifications

Category	Circuit ProtectionTransient Voltage Suppressors (TVS)TVS Diodes	Series	SMAJ
Type	Zener	Bidirectional Channels	1
Voltage - Reverse Standoff (Typ)	40V	Voltage - Breakdown (Min)	44.4V
Voltage - Clamping (Max) @ Ipp	64.5V	Current - Peak Pulse (10/1000µs)	6.2A
Power - Peak Pulse	400W	Power Line Protection	No
Applications	General Purpose	Capacitance @ Frequency	-
Operating Temperature	-65°C ~ 150°C (TJ)	Mounting Type	Surface Mount