V20E510 Equivalent & Substitute Parts

Part Overview

The V20E510 is a 820 V, 10 kA Varistor manufactured by Littelfuse Inc. in the UltraMOV™ series, designed for transient voltage suppression applications. This component features a through-hole disc package (20mm) and is rated for single-circuit protection with 365 J energy absorption capability.

The V20E510 carries an Obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring this voltage and current rating.

Substiute Parts

V20E510

Littelfuse Inc.In Stock: 1123V20E510 Datasheet

Current PartRFQ

V20E510P

LittelfuseIn Stock: 912V20E510P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V20E510 is determined by electrical and mechanical parameter equivalence:

Critical Electrical Parameters:

• Varistor voltage rating (738 V minimum to 902 V maximum range)
• Surge current capacity (10 kA)
• Maximum AC and DC voltage ratings (510 V AC / 670 V DC)
• Energy absorption (365 J)

Critical Mechanical Parameters:

• Mounting type (Through Hole)
• Package form factor (Disc 20mm)
• Number of circuits (1)

Compliance Requirements:

• RoHS3 compliance
• Operating temperature range (-55°C to 85°C)

Parts meeting all these criteria are electrically and mechanically interchangeable within the specified application envelope.

Parameter Comparison

Engineering Selection Recommendations

The V20E510P is a direct electrical and mechanical equivalent to the V20E510. Both components share identical electrical specifications across all critical parameters: varistor voltage range, surge current capacity, maximum voltage ratings, and energy absorption.

The primary distinction is product status: the V20E510 is obsolete, while the V20E510P maintains active production status. The V20E510P is manufactured in bulk packaging, whereas the original part number does not specify packaging detail.

Both parts maintain ROHS3 compliance and identical moisture sensitivity classification, ensuring regulatory and environmental compatibility. The V20E510P is the recommended selection for new designs and ongoing supply requirements.

Frequently Asked Questions (FAQ)

Q: Can V20E510P replace V20E510 in existing designs?

A: Yes. The V20E510P is electrically and mechanically identical to the V20E510 across all specified parameters. Direct substitution is valid for applications currently using the V20E510.

Q: What is the difference between V20E510 and V20E510P?

A: The components are electrically equivalent. The primary differences are product status (V20E510 is obsolete; V20E510P is active) and packaging designation (V20E510P is specified as bulk packaging).

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant with identical moisture sensitivity levels (MSL 1 - Unlimited) and operating temperature ranges (-55°C to 85°C).

Q: What mounting considerations apply to these varistors?

A: Both parts are through-hole mounted components in a 20mm disc package. PCB layout and thermal management considerations remain consistent between the two part numbers.

Q: Why is the V20E510 listed as obsolete?

A: Product obsolescence reflects manufacturing lifecycle decisions by Littelfuse Inc. The V20E510P provides continued availability of the equivalent specification.