10D471K Alternative / Equivalent / Replacement

YINT Electronics — 10mm Metal Oxide Varistor, 470V

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1. Introduction

The 10D471K is a 10mm disc metal oxide varistor (MOV) with a varistor voltage of 470V. It protects AC and DC circuits from overvoltage transients caused by lightning, switching surges, and grid disturbances. The rated AC voltage is 300V and DC voltage is 385V.

The 10D471K follows the industry-standard 10D varistor series used by Littelfuse, Epcos (TDK), Panasonic, Meritek, Joyin, and many other manufacturers. YINT Electronics manufactures this model as a fully compatible replacement with identical electrical specifications. The device responds in under 25 nanoseconds and delivers up to 2500A peak surge current (8/20µs waveform).

YINT manufactures the 10D471K using high-purity zinc oxide ceramic formulations with automated disc sorting and surge current sampling on every production batch. This manufacturing discipline ensures each 10D471K meets its 470V varistor voltage and 2500A surge current rating over the full -40C to +85C operating range. YINT 19 years of varistor manufacturing experience means reliable overvoltage protection for every application.

Engineers searching for a 10D471K replacement or 10D471K alternative can specify the YINT 10D471K as a direct drop-in equivalent. It offers tight varistor voltage tolerance and consistent clamping performance for reliable overvoltage protection in power supplies, industrial equipment, and consumer electronics.

2. Product Overview

The 10D series is one of the most widely used varistor disc sizes in electronics. It covers varistor voltages from 18V to 1800V in a compact 10mm disc package. Each part delivers reliable surge current handling for applications from low-voltage DC to high-voltage AC mains protection.

The 10D471K is a 470V rated variant for protecting 300V AC or 385V DC circuits. Its 470V varistor voltage lets it sit across AC mains or DC rails without conducting under normal operating conditions. When an overvoltage transient occurs, it clamps the surge by conducting current and absorbing energy, protecting downstream components from damage.

YINT produces the full 10D series from 18V through 1800V. This complete voltage coverage lets customers source all 10mm disc varistor needs from one manufacturing partner. The 10D471K uses high-quality zinc oxide ceramic elements with tight process controls for consistent varistor voltage and energy absorption across every production lot.

Every YINT 10D471K varistor undergoes 100% voltage classification and surge current sampling per IEC 61051-1 standards. This ensures tight V1mA tolerance and consistent clamping performance across all production batches. Customers can rely on YINT for stable long-term supply with uniform electrical characteristics from order to order.

Every YINT 10D471K varistor undergoes 100% voltage classification and surge current sampling per IEC 61051-1 standards. This ensures tight V1mA tolerance and consistent clamping performance across all production batches. Customers can rely on YINT for stable long-term supply with uniform electrical characteristics from order to order./

3. Key Features

• Disc Diameter: 10mm — Compact radial leaded package for standard PCB mounting
• Varistor Voltage: 470V — Tight tolerance of ±10%
• AC Voltage Rating: 300V — Suitable for 220-240V AC mains protection
• DC Voltage Rating: 385V — For DC rail overvoltage clamping
• Peak Surge Current: 2500A — 8/20µs waveform, single pulse
• Nominal Surge Current: 1500A — 8/20µs waveform, rated
• Max Energy Absorption: 55J — 2ms waveform typical
• Response Time: < 25ns — Fast clamping for transient events
• Operating Temperature: -40°C to +85°C — Wide industrial range
• RoHS Compliant — Lead-free and environmentally friendly

4. Specifications

5. Cross Reference

The 10D471K is an industry-standard varistor produced by multiple manufacturers worldwide. YINT's 10D471K is a direct drop-in replacement with identical or tighter electrical specifications. Engineers searching for a 10D471K equivalent can confidently choose YINT as a universal cross-reference option.

6. Comparison with Similar Models

Engineers often compare the 10D471K with other disc sizes and voltage variants. The table below shows key differences to help select the right 10D471K alternative for each design.

The 10D471K offers the best balance of surge current handling and board space for 300V AC applications. For higher surge requirements, the 14D471K provides 6000A Imax and the 20D471K delivers 8000A Imax at the same voltage rating. Choose the 10D471K when you need compact overvoltage protection for 220-240V AC mains in space-constrained designs.

YINT stocks the 10D471K in full production quantities with short lead times. Volume pricing and free samples are available for evaluation. Contact YINT for datasheets and cross-reference verification.

7. Applications

• 220-240V AC mains input overvoltage protection in power supplies
• Home appliance surge protection for washing machines, refrigerators, and air conditioners
• LED lighting driver input transient suppression
• Industrial control panel AC power input clamping
• Telecom rectifier and DC power system input protection
• UPS and inverter AC input surge protection
• Security camera and DVR system power input
• Electric meter and smart grid equipment protection
• Battery charger AC input transient clamping
• HVAC controller and building automation power protection
• Smoke detector and fire alarm system AC power protection
• Vending machine and kiosk power input surge clamping
• Power strip and surge protector outlet AC input protection

8. Why Choose YINT

• 19+ years of manufacturing expertise in circuit protection since 2006
• 40+ patents and certifications with robust quality control
• Global sales network serving North America, Europe, Asia, and Latin America
• Full 10D series from 18V to 1800V for one-stop disc varistor sourcing
• Direct OEM replacement — pin-to-pin compatible with all major brands
• Engineering team available for cross-reference verification and support
• Free samples for testing and qualification upon request
• Direct manufacturer pricing with volume discounts available
• RoHS and REACH compliant with UL 1449 recognized component design
• UL 1449 recognized varistor component for safety-certified power supplies

9. Ordering Information

10. FAQ

Q1: Is YINT 10D471K a direct replacement for Littelfuse V10E300P or Epcos B72210S2301K101?
A: Yes. YINT 10D471K has identical electrical specs and 10mm disc dimensions. It is a direct drop-in replacement.

Q2: What does "471K" mean in 10D471K?
A: "471" means 47 × 10¹ = 470V varistor voltage. "K" indicates ±10% tolerance.

Q3: What is the maximum AC voltage for 10D471K?
A: 300V AC. This covers 220-240V AC mains systems with sufficient safety margin.

Q4: What is the response time of the 10D471K varistor?
A: Less than 25 nanoseconds, providing fast clamping for lightning and switching transients.

Q5: How does 10D471K differ from 14D471K?
A: Both have the same 470V varistor voltage. 14D471K uses a 14mm disc with higher surge current (6000A vs 2500A) and energy absorption.

Q6: Can 10D471K be used for 110V AC systems?
A: Yes, but it is oversized. A 10D271K (175V AC) is more cost-effective for 110V AC applications.

Q7: Does YINT provide free samples?
A: Yes. Contact YINT with your project details for sample requests and qualification support.

11. Conclusion

YINT Electronics' 10D471K is a reliable, high-performance metal oxide varistor for 300V AC overvoltage protection. It delivers 2500A peak surge current with a 470V varistor voltage in a compact 10mm disc package.

With 19+ years of varistor manufacturing experience, YINT delivers the 10D471K with competitive pricing, short lead times, and full technical support. Every order benefits from mature ceramic processing and rigorous quality control refined over nearly two decades of circuit protection manufacturing.

Contact YINT Electronics at global@yint.com.cn for datasheets, samples, or pricing. Our engineering team is ready to assist with cross-references and application support.