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SS34-E3/57T

3A 40V Schottky rectifier, 0.5V VF, SMA, Vishay SS34 series high-efficiency diode

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Manufacturer Part：

SS34-E3/57T

Package：

SMA (DO-214AC, 5.2 x 2.6 x 2.2mm)

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Description

Product Overview

The Vishay SS34-E3/57T is a 3A, 40V Schottky rectifier diode in SMA (DO-214AC) package. With a low 0.5V forward voltage drop at 3A and fast switching capability, it is designed for high-efficiency rectification, freewheeling, and polarity protection in switch-mode power supplies, DC-DC converters, and reverse battery protection circuits.

Key Specifications

Type Schottky Rectifier
Reverse Voltage 40V
Average Forward Current 3A
Forward Voltage 0.5V @ 3A (typical)
Reverse Current 5uA @ 40V (typical)
Peak Forward Surge 80A (8.3ms single half sine)
Operating Temperature -65°C to +150°C (Tj)
Package SMA (DO-214AC)
Status Active

Features

  • Low 0.5V forward voltage for high efficiency
  • 3A current handling in compact SMA package
  • Fast switching with no reverse recovery
  • Low power loss / high efficiency
  • Guard ring for overvoltage protection
  • RoHS compliant

Applications

  • DC-DC converter output rectification
  • Freewheeling diode in buck converters
  • Reverse battery/polarity protection
  • Power supply OR-ing
  • Switch-mode power supply secondary rectification

The Vishay SS34-E3/57T is a 3A 40V Schottky rectifier in SMA package with 0.5V typical forward voltage at 3A. This is one of the most widely used Schottky diodes in the electronics industry, found in virtually every DC-DC converter and switch-mode power supply. The low forward voltage drop significantly reduces power dissipation compared to silicon PN junction rectifiers, improving overall system efficiency.

The SS34-E3/57T uses a metal-silicon junction (Schottky barrier) instead of a P-N junction, resulting in a much lower forward voltage drop (0.5V vs. 0.9-1.1V for silicon) and essentially zero reverse recovery time. The Schottky barrier is formed between the metal anode and N-type silicon, creating a majority carrier device. This eliminates the minority carrier storage that causes reverse recovery current in P-N junction diodes, enabling very high switching speeds.

Pin Name Type Function
1 Cathode Passive Cathode (band marking)
2 Anode Passive Anode
  • DC-DC buck converter freewheeling diode
  • Reverse polarity protection for battery-powered devices
  • Power supply OR-ing in redundant systems
  • SMPS secondary side rectification
  • Solar panel reverse current blocking
Manufacturer Part Number Package Notes
Vishay SS36-E3/57T SMA 60V version
onsemi SS34 SMA Equivalent
MCC SS34 SMA Equivalent
Vishay SS34HE3/57T SMA High-efficiency version
Diodes Inc S3B SMA 50V alternative
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
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4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

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If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

Contact Us

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

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5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

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We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
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  • Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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