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Home > Products > Circuit Protection > Varistors, MOVs > V20E300PL4B1
Littelfuse Inc.
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V20E300PL4B1

In Stock 49568 pcs Reference Price(In US Dollars)
1200+
$0.3915
Manufacturer Part Number:
V20E300PL4B1
Manufacturer / Brand
Littelfuse Inc.
Part of Description:
VARISTOR 470V 10KA DISC 20MM
Datasheets:
V20E300PL4B1(1).pdfV20E300PL4B1(2).pdfV20E300PL4B1(3).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 49568 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number V20E300PL4B1
Manufacturer / Brand Littelfuse Inc.
Stock Quantity 49568 pcs Stock
Category Circuit Protection > Varistors, MOVs
Description VARISTOR 470V 10KA DISC 20MM
Lead Free Status / RoHS Status: ROHS3 Compliant
Varistor Voltage (Typ) 470 V
Varistor Voltage (Min) 423 V
Varistor Voltage (Max) 517 V
Series UltraMOV™
Package / Case Disc 20mm
Package Bulk
Operating Temperature -55°C ~ 85°C (TA)
Number of Circuits 1
Mounting Type Through Hole
Maximum DC Volts 385 V
Maximum AC Volts 300 V
Energy 250J
Current - Surge 10 kA
Capacitance @ Frequency 800 pF @ 1 MHz

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

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Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

What are the key design considerations when integrating the V20E300PL4B1 UltraMOV varistor into a 300V AC line surge protection circuit regarding power supply and continuous operating voltage?
The V20E300PL4B1 is rated for a maximum AC voltage of 300V and DC voltage of 385V, with a typical varistor voltage of 470V. In design, the continuous operating voltage should remain below these ratings to limit leakage current and prevent gradual degradation of the zinc oxide disc. For AC line applications, account for normal line variations up to approximately 10-15% above nominal while ensuring the device stays in its high-impedance state under steady-state conditions.
How does the 800 pF capacitance at 1 MHz of the V20E300PL4B1 affect integration in high-frequency or EMI-sensitive circuits?
The V20E300PL4B1 exhibits approximately 800 pF capacitance measured at 1 MHz, which appears in parallel with the protected line. In designs involving switching power supplies or communication interfaces near the protection stage, this capacitance can influence filter response or introduce minor phase shift; engineers often combine it with series inductors or evaluate its contribution to overall common-mode filtering.
Can the V20E300PL4B1 be used in DC applications, and what boundaries should be observed for suitability?
The V20E300PL4B1 can be applied in DC circuits up to its 385V maximum DC rating. Suitability decreases when sustained DC voltage approaches or exceeds this threshold, as the device is optimized primarily for AC line transient suppression in SPD, UPS, or power meter designs where bidirectional clamping behavior aligns with AC waveforms.
What trade-offs arise when considering the V20E300PL4B1 as a replacement for the standard V20E300P varistor in an existing through-hole PCB layout?
The V20E300PL4B1 and V20E300P share similar 20mm disc dimensions and 10kA surge rating, with the V20E300PL4B1 belonging to the UltraMOV series offering high energy absorption of 250J. Migration typically requires verifying lead spacing and epoxy coating characteristics; the UltraMOV version provides enhanced surge handling in repeated transient events while maintaining the same mounting footprint.
When migrating from TMOV20RP300E or TMOV20R300E to the V20E300PL4B1, what additional circuit elements may be needed due to protection features?
The TMOV20RP300E and TMOV20R300E incorporate integrated thermal protection, whereas the V20E300PL4B1 is a standard radial leaded UltraMOV without this feature. In replacement scenarios, designers often add external fusing or thermal cutoff devices in series to manage potential thermal runaway under prolonged overvoltage conditions.
What operating temperature constraints apply when using the V20E300PL4B1 in industrial control panels with elevated ambient conditions?
The V20E300PL4B1 is specified for an operating temperature range of -55°C to 85°C. At temperatures approaching or exceeding 85°C, pulse current and energy ratings require derating according to typical MOV power dissipation curves to maintain long-term stability of the varistor voltage.
How does repeated surge exposure influence the long-term behavior of the V20E300PL4B1 in outdoor or high-lightning-activity installations?
Each high-energy transient absorbed by the V20E300PL4B1 causes incremental changes in the metal oxide grain boundaries. Over many events approaching the 10kA 8/20µs rating or cumulative energy near 250J, the clamping voltage may shift and leakage current can increase, leading designers to monitor varistor voltage stability or implement redundancy in critical industrial systems.
What configuration or lead forming options are available for the V20E300PL4B1 during PCB layout to accommodate tight spacing or vibration environments?
The V20E300PL4B1 is supplied in bulk with straight radial leads on a 20mm disc. For custom integration, leads can be formed or trimmed to fit specific hole patterns; in high-vibration applications, mechanical support or conformal coating around the disc helps reduce stress on solder joints without altering electrical characteristics.
Is the V20E300PL4B1 suitable for replacement of V20E300L4B7 in legacy designs, and what performance differences should be evaluated?
Both the V20E300PL4B1 and V20E300L4B7 are 20mm UltraMOV devices with comparable 300V AC ratings and 10kA surge capability. Differences may appear in lead configuration or coating details; verification focuses on matching energy absorption and ensuring the 423V to 517V varistor voltage window aligns with the circuit's protection coordination requirements.
In high-reliability industrial motor drive applications, what factors related to surge pulse duration affect the effective lifetime of the V20E300PL4B1?
The V20E300PL4B1 is characterized for 8/20µs current surges up to 10kA. For longer-duration pulses common in inductive load switching, the allowable peak current decreases per the device's pulse rating curves, requiring engineers to calculate cumulative energy and apply appropriate derating to avoid accelerated aging of the disc.

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Littelfuse Inc.

VARISTOR 470V 10KA DISC 20MM

In Stock: 49568

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