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Ⅰ.Overview of product

The TMOV20RP510E is a high-performance metal oxide varistor (MOV) under Littelfuse Inc.’s TMOV® series, a key component in circuit protection. It is designed to suppress transient voltage surges, effectively shielding electronic circuits and equipment from damage caused by voltage spikes, and is widely used in various AC and DC electrical systems.

Ⅱ.Core parameter

Category:Circuit Protection,Varistors, MOVs

Manufacturer:Littelfuse Inc.

Series:TMOV®

Packaging:Bulk

Part Status:Active

Maximum AC Volts:510 V

Maximum DC Volts:670 V

Varistor Voltage (Min):738 V

Varistor Voltage (Typ):820 V

Varistor Voltage (Max):902 V

Capacitance @ Frequency:350 pF @ 1 MHz

Operating Temperature:-55°C ~ 85°C (TA)

Mounting Type:Through Hole

Package / Case:Disc 20mm

Ⅲ.Main characteristics

Superior Transient Voltage Suppression:With a varistor voltage range of 738 V (min) to 902 V (max), it rapidly clamps transient voltage surges, preventing damage to sensitive electronic components in AC (up to 510 V) and DC (up to 670 V) systems.

Stable Capacitance Performance:Features a capacitance of 350 pF at 1 MHz, ensuring minimal interference with normal circuit operation while maintaining reliable surge protection functionality.

Wide Temperature Adaptability:Operates within a temperature range of -55°C to 85°C (TA), making it suitable for harsh environmental conditions in industrial, commercial, and residential applications.

Durable Through-Hole Mounting:The through-hole design provides strong mechanical stability on PCBs or electrical enclosures, resisting vibration and ensuring long-term connection reliability.

Standard Disc Package:The 20mm disc case offers a compact form factor, balancing space efficiency with robust surge handling capability, and is compatible with common assembly processes.

Ⅳ.Application field

Power Distribution Systems:Used in residential and commercial power panels, surge protectors, and UPS (Uninterruptible Power Supply) units to shield against grid voltage spikes and lightning-induced surges.

Industrial Equipment:Applied in industrial control panels, motor drives,and factory automation systems,protecting sensitive control circuits from voltage transients caused by equipment switching or power grid fluctuations.

Telecommunications Infrastructure:Utilized in telecom base stations, network routers, and data centers to protect communication equipment from transient voltage events, ensuring uninterrupted data transmission.

Renewable Energy Systems:Suitable for solar inverters and wind energy converters, shielding DC power circuits (up to 670 V) from voltage surges generated during energy conversion or grid connection.

Ⅴ.Summary

The TMOV20RP510E from Littelfuse Inc.’s TMOV® series is a reliable and efficient varistor for transient voltage protection. With its wide voltage compatibility, stable performance, and durable design, it meets the surge protection needs of power distribution, industrial, consumer electronics, and renewable energy applications, serving as a cost-effective solution to enhance electronic system safety and reliability.