V20E320PL4B Equivalent & Substitute Parts

Part Overview

The V20E320PL4B is a 510 V, 10 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse Inc. in the UltraMOV™ series. This through-hole disc component (20mm) is designed for transient voltage protection in electronic circuits. The part is currently Active in product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the specified tolerances, ensuring functional interchangeability in circuit protection applications.

Substiute Parts

V20E320PL4B

Littelfuse Inc.In Stock: 1244V20E320PL4B Datasheet

Current PartRFQ

TMOV20RP320E

Littelfuse Inc.In Stock: 5708TMOV20RP320E Datasheet

Parametric EquivalentRFQ

V20E320P

Littelfuse Inc.In Stock: 1615V20E320P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the V20E320PL4B are qualified based on the following critical parameters that determine functional equivalence:

• Varistor Voltage (Typical): 510 V nominal
• Varistor Voltage Range: 459–561 V (Min–Max)
• Maximum AC Volts: 320 V
• Maximum DC Volts: 420 V
• Current - Surge: 10 kA
• Number of Circuits: 1
• Mounting Type: Through Hole
• Package / Case: Disc 20mm
• Operating Temperature Range: −55°C to +85°C

All identified substitutes maintain these electrical and mechanical specifications within the allowed tolerances. Substitution is valid when all parameters match or fall within the specified ranges.

Parameter Comparison

Engineering Selection Recommendations

All three parts—V20E320PL4B, TMOV20RP320E, and V20E320P—are Active products manufactured by Littelfuse Inc. with identical RoHS3 compliance, REACH unaffected status, and export classification (EAR99). All parts meet the same electrical specifications for 510 V varistor voltage, 10 kA surge current, and 320 V AC / 420 V DC maximum ratings.

The TMOV20RP320E includes thermal protection as an additional feature and belongs to the TMOV® series, while V20E320PL4B and V20E320P are UltraMOV™ series components. Energy absorption is 273 J for V20E320PL4B and V20E320P, and 270 J for TMOV20RP320E—a negligible difference within engineering tolerance for this component class.

Selection among these equivalents is based on availability, series preference, and thermal protection requirements. All parts are suitable for direct substitution in circuits designed for 510 V varistor voltage protection with 10 kA surge capacity.

Frequently Asked Questions (FAQ)

Q: Can TMOV20RP320E replace V20E320PL4B directly?

A: Yes. Both parts share identical electrical parameters (510 V varistor voltage, 10 kA surge current, 320 V AC / 420 V DC maximum ratings), the same through-hole disc 20mm package, and equivalent operating temperature range (−55°C to +85°C). The TMOV20RP320E includes thermal protection and belongs to the TMOV® series, while V20E320PL4B is UltraMOV™ series. Energy absorption differs by 3 J (273 J vs. 270 J), which is within acceptable tolerance for transient voltage suppression applications.

Q: What is the difference between V20E320P and V20E320PL4B?

A: Both parts are UltraMOV™ series varistors with identical electrical specifications: 510 V varistor voltage, 10 kA surge current, 273 J energy absorption, and the same through-hole disc 20mm package. The primary difference is packaging designation (bulk vs. alternative packaging format), but electrical and mechanical compatibility is complete.

Q: Are all three parts RoHS3 compliant?

A: Yes. V20E320PL4B, TMOV20RP320E, and V20E320P are all RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH unaffected status.

Q: Can these parts be used interchangeably in existing circuit designs?

A: Yes, provided the circuit is designed for 510 V varistor voltage, 10 kA surge current capacity, and through-hole mounting. All three parts meet these specifications and operate within the same temperature range (−55°C to +85°C). No circuit redesign is required for substitution.

Q: What is the significance of the 3 J energy difference between V20E320PL4B and TMOV20RP320E?

A: The energy absorption difference (273 J vs. 270 J) represents approximately 1% variance and is within normal manufacturing tolerance for varistor components. Both parts are rated for the same 10 kA surge current and provide equivalent transient voltage suppression performance in circuit protection applications.