Andrew
Andrew Content Marketer
On Jul 28, 2025

SMAJ28CA ESD Suppressors / TVS Diodes by FOSAN – Reliable Surge Defense for Sensitive Circuits

The ESD Suppressors / TVS Diodes SMAJ28CA by FOSAN are built to deliver robust surge protection for electronic circuits operating in harsh environments. These bidirectional devices are designed to clamp transient voltages and safeguard sensitive components from electrostatic discharge (ESD), EFTs (Electrical Fast Transients), and other voltage spikes.

Whether you're working on industrial controllers, telecom boards, or power distribution units, these components are vital to ensuring Circuit Protection and maintaining product longevity. Trusted globally, ESD Suppressors / TVS Diodes by FOSAN are increasingly favored for compact designs with high-performance demands.


Technical Specifications

  • Part Number: SMAJ28CA

  • Manufacturer: FOSAN

  • Category: Circuit Protection, ESD Suppressors / TVS Diodes by FOSAN

  • Peak Pulse Power: 400W (10/1000µs waveform)

  • Stand-Off Voltage (VRWM): 28V

  • Clamping Voltage: 45.4V

  • Breakdown Voltage: 31.1V – 34.4V

  • Polarity: Bidirectional

  • Package Type: DO-214AC (SMA)

  • Mounting: Surface Mount (SMT)

  • RoHS Compliant: Yes

Engineered for compact PCB integration, SMAJ28CA ESD Suppressors / TVS Diodes by FOSAN are ideal for applications where space is limited but protection is paramount.


Key Features

  • ? 400W Peak Pulse Power capability

  • ? Bidirectional protection

  • ? Surface mount package (SMA)

  • ? Excellent clamping response time

  • ? Designed for automated pick-and-place equipment

From telecom circuits to industrial automation, these Circuit Protection components offer peace of mind in voltage-sensitive applications.


Applications

  • Power line protection

  • I/O port defense

  • Automotive electronics

  • Industrial controllers

  • Data and signal line security

  • Embedded systems

Every smart device benefits from integrating ESD Suppressors / TVS Diodes by FOSAN to meet EMC regulations and reduce warranty returns due to ESD damage.


Use Case: Automotive ECU Protection

Scenario: An automotive manufacturer needed surge protection for engine control units (ECUs) exposed to frequent voltage fluctuations.

Challenge: High-speed data lines were vulnerable to transient voltages and ESD from diagnostics and external interfaces.

Solution: Engineers integrated SMAJ28CA ESD Suppressors / TVS Diodes by FOSAN into every signal line interface, preserving IC integrity.

Result: Reduced field failures, enhanced system reliability, and full compliance with ISO 7637 standards.

This real-world case confirms the essential role of Circuit Protection using proven components like those from FOSAN.


Download the SMAJ28CA Datasheet

Need electrical characteristics, mechanical drawings, or clamping curves?

[Download SMAJ28CA Datasheet from Xon Electronics]


Buy Now from Xon Electronics

Choose Xon Electronics for genuine ESD Suppressors / TVS Diodes by FOSAN:

  • Factory-direct pricing
  • Global delivery to USA, India, Australia, Europe & more
  • Stock available for fast dispatch
  • Bulk orders for OEMs & contract manufacturers
  • Secure checkout at www.xonelec.com

Conclusion

The SMAJ28CA ESD Suppressors / TVS Diodes by FOSAN deliver high-reliability Circuit Protection for a wide range of modern electronic systems. Their compact form factor, quick response time, and solid surge-handling capability make them a smart choice for safeguarding electronics from transient voltages. Trusted by design engineers globally, they’re now available for immediate shipment from Xon Electronics.


FAQs – SMAJ28CA by FOSAN

Q1. Is SMAJ28CA suitable for automotive use?
Yes, it's widely used in automotive ECUs, sensors, and infotainment systems.

Q2. What’s the clamping voltage range?
It clamps transient spikes to around 45.4V.

Q3. Can I use it in bidirectional circuits?
Absolutely—it offers bidirectional protection in a single package.

Q4. Does it meet RoHS compliance?
Yes, the part is RoHS compliant and lead-free.

Q5. Do you ship globally?
Yes! Xon Electronics ships to USA, India, Australia, Europe, and other international markets.




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