3KP210A Equivalent & Substitute Parts

Part Overview

The 3KP210A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 210V reverse standoff voltage with a 349.5V maximum clamping voltage and 8.6A peak pulse current capability. The 3KP210A is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

3KP210A

Littelfuse Inc.In Stock: 8353KP210A Datasheet

Current PartRFQ

5KP210A

Littelfuse Inc.In Stock: 9755KP210A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP210A is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 210V
• Voltage - Breakdown (Min): 233V
• Voltage - Clamping (Max) @ Ipp: 349.5V
• Unidirectional Channels: 1
• Mounting Type: Through Hole
• Package / Case: P600, Axial
• Operating Temperature Range: -55°C ~ 175°C (TJ)

The 5KP210A meets all substitution criteria. While this substitute exhibits higher peak pulse current (14.6A versus 8.6A) and greater peak pulse power (5000W versus 3000W), these represent enhanced performance characteristics that maintain full compatibility with the original specification envelope. The identical voltage parameters, channel configuration, mounting type, package designation, and temperature range ensure direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The 5KP210A is the qualified substitute for the obsolete 3KP210A. Selection of the 5KP210A is supported by the following factors:

• Active product status ensures ongoing availability and manufacturing support
• ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) maintain regulatory and environmental compatibility
• Identical voltage specifications (210V standoff, 233V breakdown, 349.5V clamping) guarantee electrical equivalence
• Enhanced current and power ratings (14.6A and 5000W respectively) provide superior transient suppression capability without introducing incompatibility
• Identical package designation (P600, Axial) and through-hole mounting type enable direct board-level substitution

Frequently Asked Questions (FAQ)

Q: Can the 5KP210A be used as a direct replacement for the 3KP210A in existing designs?

A: Yes. The 5KP210A maintains identical voltage parameters, channel configuration, mounting type, and package specification. The higher current and power ratings represent enhanced performance that does not compromise compatibility.

Q: What is the primary reason for substituting the 3KP210A?

A: The 3KP210A is classified as obsolete. The 5KP210A provides equivalent electrical performance with active product status and assured long-term availability.

Q: Are there any package or mounting differences between these parts?

A: No. Both components use the P600 axial package and through-hole mounting configuration, enabling direct board-level substitution without layout modifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 3KP210A and 5KP210A are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level).

Q: What is the significance of the higher current rating in the 5KP210A?

A: The 5KP210A is rated for 14.6A peak pulse current versus 8.6A in the 3KP210A. This enhanced rating provides greater transient suppression capability and margin for system protection without affecting voltage regulation characteristics.