3KP220C-B Equivalent & Substitute Parts

Part Overview

The 3KP220C-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This component features a 220V reverse standoff voltage rating and a maximum clamping voltage of 389.66V at peak pulse current. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where this protection topology is required.

Substiute Parts

3KP220C-B

Littelfuse Inc.In Stock: 9503KP220C-B Datasheet

Current PartRFQ

5KP220CA-B

Littelfuse Inc.In Stock: 9105KP220CA-B Datasheet

DirectRFQ

15KP220CA-TP

Micro Commercial CoIn Stock: 82815KP220CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP220C-B is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 220V (exact match required)
• Bidirectional Channels: 1 (single channel configuration)
• Mounting Type: Through Hole (mechanical compatibility)
• Package / Case: Axial configuration (P600 or equivalent axial package)
• Operating Temperature Range: -55°C ~ 175°C (TJ) (minimum requirement)
• Type: Zener (TVS diode technology)

Secondary Compatibility Parameters:

• Voltage - Breakdown (Min): 231.3V to 245V (acceptable range for 220V standoff class)
• Voltage - Clamping (Max) @ Ipp: 356V to 389.66V (clamping performance envelope)
• Current - Peak Pulse (10/1000µs): 8.1A minimum (protection capability)
• Power - Peak Pulse: 3000W minimum (energy dissipation capacity)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

The substitute parts identified maintain the 220V standoff voltage specification and through-hole axial package format, ensuring direct functional and mechanical compatibility with existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

5KP220CA-B (Littelfuse Inc.) - Direct Substitute

The 5KP220CA-B is an active-status component from the same manufacturer (Littelfuse Inc.) with identical 220V standoff voltage and through-hole P600 axial package. This part provides enhanced performance characteristics with 13.7A peak pulse current and 5000W peak pulse power, exceeding the original 3KP220C-B specifications. The component maintains full ROHS3 compliance and unlimited moisture sensitivity rating. This substitute is suitable for direct replacement in existing designs without circuit modification.

15KP220CA-TP (Micro Commercial Co) - MFR Recommended Alternative

The 15KP220CA-TP is an active-status component recommended by the original manufacturer as an alternative solution. It maintains the 220V standoff voltage specification and through-hole axial mounting configuration. This part delivers superior protection capability with 15000W peak pulse power and improved clamping voltage of 356V. The R-6 axial package is mechanically compatible with through-hole PCB layouts. Full ROHS3 compliance and unlimited moisture sensitivity rating are maintained. This substitute provides enhanced transient protection margin for applications requiring higher energy dissipation capacity.

Both substitute parts satisfy the core electrical and mechanical requirements for 220V standoff voltage protection in through-hole axial configurations and maintain all required regulatory compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the 5KP220CA-B and 15KP220CA-TP be used interchangeably with the 3KP220C-B?

A: Both parts maintain the critical 220V reverse standoff voltage specification and through-hole axial package format required for direct substitution. The 5KP220CA-B uses the identical P600 package, while the 15KP220CA-TP uses the R-6 axial package. Both axial configurations are mechanically compatible with standard through-hole PCB layouts. The primary difference is enhanced power dissipation capacity in both substitutes.

Q: What is the significance of the different peak pulse power ratings?

A: The 3KP220C-B is rated for 3000W peak pulse power, the 5KP220CA-B for 5000W, and the 15KP220CA-TP for 15000W. These ratings indicate the maximum transient energy each component can safely dissipate. Higher power ratings provide greater protection margin for transient events. Selection depends on the actual transient energy present in the application circuit.

Q: Are there package compatibility concerns between P600 and R-6 axial formats?

A: Both P600 and R-6 are through-hole axial package formats suitable for standard PCB layouts. The primary difference is physical size. The R-6 package used by the 15KP220CA-TP is larger than the P600 package. Verify available PCB footprint space before selecting the 15KP220CA-TP if space constraints exist.

Q: Do all substitute parts meet the same regulatory requirements as the original 3KP220C-B?

A: Yes. Both the 5KP220CA-B and 15KP220CA-TP are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the original part's regulatory status. Both are suitable for applications requiring ROHS3 compliance.

Q: Why is the 3KP220C-B classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Littelfuse Inc. The substitute parts listed represent active alternatives that provide equivalent or enhanced functionality for the same application requirements.