V20E550 Equivalent & Substitute Parts

Part Overview

The V20E550 is a 910 V, 10 kA Varistor manufactured by Littelfuse Inc. as part of the UltraMOV™ series. This Through Hole Disc 20mm transient voltage suppressor is designed for single-circuit overvoltage protection applications. The V20E550 is currently classified as Obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance and new design implementations where legacy component specifications must be maintained.

Substiute Parts

V20E550

Littelfuse Inc.In Stock: 1038V20E550 Datasheet

Current PartRFQ

V20E550P

Littelfuse Inc.In Stock: 3305V20E550P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the V20E550 is determined by strict equivalence across the following critical parameters:

• Varistor Voltage range (Min: 819 V, Typ: 910 V, Max: 1.001 kV)
• Surge Current rating (10 kA)
• Maximum AC and DC voltage ratings (550 V AC, 745 V DC)
• Energy absorption capacity (370 J)
• Mounting configuration (Through Hole)
• Physical package form (Disc 20mm)
• Operating temperature range (-55°C to 85°C)
• Circuit count (1 Circuit)

Only parts meeting all these specifications are classified as direct substitutes. Packaging format differences (Bulk vs. other configurations) do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The V20E550P is the primary direct substitute for the V20E550. Both components are manufactured by Littelfuse Inc. within the UltraMOV™ series and maintain identical electrical and mechanical specifications across all critical parameters. The V20E550P differs only in product status (Active vs. Obsolete) and packaging format (Bulk), neither of which affects functional compatibility in circuit applications.

The V20E550P is ROHS3 compliant and carries REACH Unaffected status, meeting current environmental and regulatory requirements. With 3200 units in stock, the V20E550P provides reliable availability for replacement and new design applications requiring 910 V, 10 kA varistor protection.

Frequently Asked Questions (FAQ)

Q: Can V20E550P be used as a direct replacement for V20E550?

A: Yes. The V20E550P is electrically and mechanically identical to the V20E550. All critical parameters—varistor voltage, surge current, voltage ratings, energy absorption, mounting type, and package dimensions—are equivalent. The only differences are product status and packaging format, which do not affect circuit performance.

Q: What is the significance of the Obsolete status for V20E550?

A: Obsolete status indicates the V20E550 is no longer manufactured. The V20E550P, with Active status, is the current production equivalent and should be specified for new designs and ongoing procurement.

Q: Does packaging format affect substitution compatibility?

A: No. The V20E550 and V20E550P differ only in packaging designation (standard vs. Bulk). Both use identical Disc 20mm Through Hole packages. Packaging format does not affect electrical performance or mechanical fit in circuit board applications.

Q: Are there any compliance differences between V20E550 and V20E550P?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited). The V20E550P additionally carries REACH Unaffected certification. Both meet current environmental standards for electronic component manufacturing and use.

Q: What applications require 910 V, 10 kA varistor protection?

A: This varistor specification is suitable for transient overvoltage suppression in industrial power systems, telecommunications equipment, and AC line protection circuits operating at 550 V AC maximum. The 10 kA surge current rating addresses high-energy transient events.