3KP210CA-B Equivalent & Substitute Parts

Part Overview

The 3KP210CA-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This bidirectional zener diode features a 210V reverse standoff voltage with a maximum clamping voltage of 349.5V at peak pulse current. The device is packaged in a P600 axial through-hole configuration and operates across a temperature range of -55°C to 175°C.

The 3KP210CA-B is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

3KP210CA-B

Littelfuse Inc.In Stock: 7603KP210CA-B Datasheet

Current PartRFQ

5KP210CA-B

Littelfuse Inc.In Stock: 11205KP210CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP210CA-B is determined by strict equivalence across the following critical parameters:

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

The 5KP210CA-B qualifies as a direct substitute based on matching all critical voltage and mechanical parameters. While the 5KP210CA-B 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 design requirements. The identical package, mounting configuration, and voltage specifications ensure mechanical and electrical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The 5KP210CA-B is the recommended substitute for the obsolete 3KP210CA-B. Both devices are manufactured by Littelfuse Inc. and maintain identical voltage specifications, package configuration, and thermal operating range. The 5KP210CA-B holds Active product status, ensuring continued availability and supply chain support.

Both parts comply with ROHS3 standards and carry MSL rating of 1 (Unlimited), indicating equivalent environmental and moisture handling requirements. The 5KP210CA-B's enhanced current and power ratings provide superior transient suppression capability without introducing any compatibility concerns for existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the 5KP210CA-B directly replace the 3KP210CA-B in existing designs?

A: Yes. The 5KP210CA-B is electrically and mechanically interchangeable with the 3KP210CA-B. Both devices share identical voltage specifications (210V standoff, 349.5V clamping), package type (P600 axial), and mounting configuration (through-hole). No circuit modifications are required.

Q: What is the primary difference between these two parts?

A: The 5KP210CA-B provides higher peak pulse current (14.6A versus 8.6A) and greater peak pulse power handling (5000W versus 3000W). These enhanced ratings represent improved performance characteristics that maintain full backward compatibility.

Q: Why is the 3KP210CA-B classified as obsolete?

A: The 3KP210CA-B has reached end-of-life status. The 5KP210CA-B series offers superior performance specifications and remains in active production, making it the preferred choice for new designs and ongoing production support.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and carry identical MSL ratings of 1 (Unlimited). No compliance or certification barriers exist for substitution.

Q: What is the operating temperature range for both devices?

A: Both the 3KP210CA-B and 5KP210CA-B operate across -55°C to 175°C junction temperature, ensuring equivalent thermal performance across all application environments.