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ERZE11A621

620V MOV varistor, 5kA surge, 385VAC max continuous, disc 14mm radial, for AC mains surge protection

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Manufacturer Part：

ERZE11A621

Package：

Disc 14mm (Radial Leaded, 7.5mm pitch)

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Description

Product Overview

The ERZE11A621 is a Panasonic metal oxide varistor (MOV) designed for transient overvoltage protection. With a varistor voltage of 620V and high energy absorption capability in a disc-type radial leaded package, it protects power supply inputs from surge and lightning-induced voltage transients in industrial and commercial equipment.

Key Specifications

Varistor Voltage (V1mA) 620V (nominal, 558V-682V range)
Max Continuous Voltage (AC) 385V RMS
Max Continuous Voltage (DC) 505V
Clamping Voltage (VC) 1020V @ 50A
Peak Current (8/20 µs) 5 kA
Energy Rating (2ms) 190 J
Average Power Dissipation 0.6W
Capacitance 300 pF @ 1 kHz
Operating Temperature -40°C to +85°C
Package Disc 14mm (radial leads, 7.5mm pitch)

Features

  • 620V varistor voltage provides overvoltage protection for 380-400V AC mains input
  • 5 kA peak surge current rating for lightning and switching surge absorption
  • 190 J energy capability for high-energy transient suppression
  • Low clamping voltage ratio limits voltage stress on downstream components
  • Radial leaded disc package for through-hole mounting on power supply PCBs
  • UL1449 and VDE safety certifications

Applications

  • AC mains input surge protection in SMPS front-end
  • Industrial equipment power line lightning protection
  • Telecom power supply overvoltage clamp
  • Motor drive input transient suppression
  • UPS input surge protection device

The ERZE11A621 is a Panasonic metal oxide varistor (MOV) with 620V nominal varistor voltage, designed to protect 380-400V AC power line inputs from lightning and switching surge transients. The disc-type 14mm radial leaded package provides 5 kA peak surge current capability (8/20 µs waveform) and 190 J energy absorption (2 ms), ensuring robust protection for SMPS front-ends, industrial equipment power supplies, and telecom rectifier inputs. The device clamps at 1020V under 50A surge current, limiting the voltage stress on downstream components during transient events. UL1449 and VDE certified.

The ERZE11A621 is a polycrystalline zinc oxide (ZnO) varistor with a microstructure of ZnO grains separated by intergranular barriers. At normal operating voltages (below 385V AC), the intergranular barriers present high impedance (>1 MΩ), allowing negligible leakage current. When a transient voltage exceeds the varistor voltage (620V at 1 mA), the intergranular barriers undergo avalanche breakdown, dramatically reducing the impedance and shunting the surge current to ground. The clamping voltage (1020V at 50A) is determined by the nonlinear V-I characteristic of the grain boundary junctions. After the transient subsides, the varistor returns to its high-impedance state.

Terminal Function
Lead 1 Line side connection (AC mains input)
Lead 2 Neutral/ground side connection
  • SMPS front-end surge protection between AC mains input and rectifier bridge
  • Industrial PLC power supply MOV protection stage with thermal fuse
  • Telecom -48V rectifier input lightning surge clamp
  • Motor drive AC input overvoltage protection with thermal disconnect
  • UPS AC input surge arrestor for IEC 61000-4-5 compliance
Model Manufacturer Key Difference
ERZE11A560 Panasonic 560V variant for 350VAC mains
V275LA40A Littelfuse Alternative MOV 680V disc 14mm
B72214S0431K101 TDK/Epcos Alternative 620V MOV disc
ERZE11A680 Panasonic 680V variant for 420VAC mains
V360LA40A Littelfuse Alternative 620V MOV 20mm disc
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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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We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

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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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    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

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    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

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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
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
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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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We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

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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6. Global Logistics & Document Services

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

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  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

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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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