Introduction
In electronic systems susceptible to switching transient surges or electrostatic discharge (ESD), the SMBJ58A, as an industry-standard device, provides reliable overvoltage protection by limiting transient voltage levels and absorbing surge energy.
This article provides a practical overview of Semiware's SMBJ58A, focusing on its electrical characteristics, typical application environments, and key considerations for selection and purchasing.
SMBJ58A Key Electrical Parameters
| Parameter | Value |
| Reverse Standoff Voltage (VRWM) | 58V |
| Breakdown Voltage (VBR) | 64.4V-71.2V |
| Clamping Voltage (VC) | 93.6V |
| Peak Pulse Power (10/1000 μs) | 600W |
| Package | SMB / DO-214AA |
| Polarity | Unidirectional |
| Operating Temperature | -55°C to +150°C |
| Brand | Semiware |
Product Characteristics of SMBJ58A
- Unidirectional TVS diode designed for transient suppression on higher-voltage DC lines
- 58V reverse stand-off voltage, suitable for 48V and adjacent DC systems
- Capable of handling high peak pulse power up to 600W under a 10/1000 μs surge waveform
- Fast clamping response to limit overvoltage stress during transient events
- Stable clamping performance supported by low dynamic resistance
- Supplied in an SMB (DO-214AA) surface-mount package, compatible with automated PCB assembly
- Designed for reliable operation across a wide temperature range (-55°C to +150°C)
- RoHS compliant, lead-free construction
📌 SMBJ58A Alternative
🔹 In practical designs, R&D and procurement typically utilize devices from well-known manufacturers such as Littelfuse, Vishay, or Diodes Incorporated.
🔹 Semiware's SMBJ58A TVS diode is developed according to industry specifications and is compatible with their devices, requiring no changes to PCB layout or system design.
👉 If you want to verify parameter matching for a specific application or need assistance in selecting a suitable alternative device, please contact us.
📩 sales29@semiware.com
Our technical team can help you match or cross-reference the correct SMBJ series alternative devices.
📌 Typical Use Scenarios for SMBJ58A
SMBJ58A is commonly used in applications where higher DC voltage rails require robust transient protection, including:
- 48V power distribution systems in industrial and telecom equipment
- DC input protection for power modules and converters
- Industrial control and automation systems exposed to electrical noise
- Automotive electronic subsystems using higher-voltage power lines
- Energy storage, charging, and power management circuits
‼️ Procurement and Supply Advantages
Why Choose Semiware as Your SMBJ58A Alternative?
Semiware is a direct manufacturer of TVS diodes, enabling us to provide reliable guarantees in terms of supply stability, price control, and quality.
1️⃣ What Procurement Problems Can We Solve?
Whether you're in the early evaluation stage or already in mass production, we can assist you with:
- Supporting the complete procurement process from sample application to trial production to mass production.
- Using the same specifications and the same factory avoids the risks associated with repeatedly changing suppliers.
- Especially suitable for projects requiring continuous supply or repeat orders.
- Stable production capacity and controllable delivery times.
2️⃣ The entire production process is controlled:
- Unified production and testing standards.
- Electrical performance meets industry standards.
- Providing batch traceability to support customer quality audits and long-term project management.
3️⃣ Semiware can help you safely replace original brand materials:
- Supporting cross-referencing and substitution verification with brands such as Littelfuse and Vishay.
- Assisting in confirming the matching of key parameters based on the customer's BOM and application scenario.
- Customized silkscreen printing, packaging methods, or supply arrangements are available upon request.
👉 If you are looking for a long-term factory-type supplier for SMBJ58A, or wish to replace existing brands and reduce procurement costs, Semiware can provide you with a stable supply and competitive solutions.
SMBJ58A datasheet pdf download: https://en.semiware.com/uploads/datasheet/SMBJ58A.pdf
Feel free to contact us directly for specification confirmation, sample support, or benchmarking and alternative suggestions.
📩sales29@semiware.com
🔗 Related Products
❓ Frequently Asked Questions (FAQs)
Q: Can Semiware's SMBJ58A replace Littelfuse or Vishay SMBJ58A?
Yes. Semiware’s SMBJ58A is designed to meet industry-standard electrical specifications and can be used as a drop-in replacement for SMBJ58A parts from Littelfuse, Vishay, and other major brands.
Key parameters such as VRWM, VBR, clamping voltage, peak pulse power, and package type should be confirmed for the specific application.
Q: Is Semiware a manufacturer or a distributor?
Semiware is a direct manufacturer (factory) of TVS diodes. Of course, we have agents in many countries such as India, South Korea, Turkey, and Brazil.
Q: Does Semiware support sample and small-batch trial orders?
Yes. Semiware supports sample orders and trial production before mass production.
Q: How stable is the supply for long-term or repeat orders?
As a factory, Semiware is directly responsible for production planning and inventory management.
Q:Can Semiware provide assistance with cross-references or Bill of Materials (BOM) matching?
Yes. If you can provide the original brand and part number, our technical team can help you verify parameter compatibility and recommend the most suitable alternative.
Q: How can I request specifications, samples, or confirmation of alternative products?
You can contact us directly for datasheets, samples, or assistance with cross-reference alternative products.
Our team will provide full support from evaluation to mass production.
📩sales29@semiware.com
🏭 Our Factory
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