Littelfuse 87063-014 Equivalent & Substitute Parts

Part Overview

The Littelfuse 87063-014 is a 33 V, 750 A varistor in a through-hole disc 14mm package, designed for transient voltage suppression applications. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

87063-014

Littelfuse Inc.In Stock: 117187063-014 Datasheet

Current PartRFQ

V33ZA5P

Littelfuse Inc.In Stock: 3241V33ZA5P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse V33ZA5P qualifies as a direct substitute for the 87063-014 based on the following critical parameters:

Matching Parameters:

• Varistor voltage rating: 33 V (typical)
• Varistor voltage range: 29.5–36.5 V (87063-014) overlaps with 29.7–36.3 V (V33ZA5P)
• Maximum DC voltage: 26 V
• Maximum AC voltage: 20 V
• Number of circuits: 1
• Mounting type: Through Hole
• Package / Case: Disc 14mm
• Series: ZA
• Energy rating: 6 J

Distinguishing Parameter:

• Current - Surge: 87063-014 rated at 750 A; V33ZA5P rated at 1 kA

The V33ZA5P provides enhanced surge current capability (1 kA versus 750 A) while maintaining all other electrical and mechanical specifications. This represents a performance upgrade within the same product family and package footprint.

Parameter Comparison

Engineering Selection Recommendations

The V33ZA5P is the recommended substitute for the obsolete 87063-014. Selection is based on the following factors:

Product Status: The V33ZA5P is classified as active, ensuring long-term availability and continued manufacturing support, whereas the 87063-014 is obsolete.

Regulatory Compliance: The V33ZA5P meets ROHS3 compliance and is REACH unaffected, providing superior environmental and regulatory alignment compared to the non-compliant 87063-014.

Electrical Compatibility: Both components share identical voltage ratings (33 V typical), voltage ranges, maximum DC/AC ratings, and energy specifications. The V33ZA5P's increased surge current rating (1 kA versus 750 A) provides additional margin without compromising the original design intent.

Mechanical Compatibility: Identical through-hole mounting and disc 14mm package ensure direct physical substitution without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the V33ZA5P be used as a direct replacement for the 87063-014?

A: Yes. Both components are from the Littelfuse ZA series with identical 33 V varistor voltage ratings, voltage ranges, maximum DC/AC ratings, and 6 J energy specifications. The V33ZA5P's 1 kA surge current rating exceeds the 87063-014's 750 A rating, providing enhanced protection capability. Package and mounting type are identical.

Q: What is the primary reason to substitute the 87063-014?

A: The 87063-014 is obsolete. The V33ZA5P is an active product with ongoing manufacturing support and improved regulatory compliance (ROHS3 compliant versus non-compliant).

Q: Are there any electrical differences between these parts?

A: The varistor voltage ranges are nearly identical (29.5–36.5 V versus 29.7–36.3 V). The V33ZA5P provides higher surge current capacity (1 kA versus 750 A) while maintaining all other electrical specifications.

Q: Will the V33ZA5P fit the same PCB footprint?

A: Yes. Both components use through-hole mounting with a disc 14mm package, ensuring identical physical compatibility without PCB modification.

Q: What is the compliance status difference?

A: The V33ZA5P is ROHS3 compliant and REACH unaffected, whereas the 87063-014 is RoHS non-compliant. This makes the V33ZA5P suitable for applications with environmental and regulatory requirements.