Equivalent & Substitute Parts for 3KP8.0C

Part Overview

The 3KP8.0C is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features an 8V reverse standoff voltage with a 14.28V maximum clamping voltage and 220.6A peak pulse current capability in a P600 axial through-hole package.

The 3KP8.0C is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure availability for new production runs and field replacements.

Substiute Parts

3KP8.0C

Littelfuse Inc.In Stock: 12283KP8.0C Datasheet

Current PartRFQ

5KP8.0CA

Littelfuse Inc.In Stock: 41205KP8.0CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP8.0C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 8V
• Bidirectional operation (1 channel)
• Zener diode type
• General-purpose transient protection application

Mechanical Compatibility Criteria:

• Package / Case: P600, Axial
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 175°C (TJ)

Regulatory Compliance:

• RoHS3 Compliant status

The 5KP8.0CA meets all substitution criteria. While it exhibits higher peak pulse current (375A vs. 220.6A) and greater peak pulse power (5000W vs. 3000W), these represent enhanced performance characteristics within the same voltage class and package specification. The lower clamping voltage (13.6V vs. 14.28V) provides improved transient suppression performance.

Parameter Comparison

Engineering Selection Recommendations

The 5KP8.0CA is the qualified substitute for the 3KP8.0C based on the following factors:

Product Status: The 5KP8.0CA maintains Active product status, ensuring continued availability and manufacturing support, whereas the 3KP8.0C is Obsolete.

Regulatory Compliance: Both components are ROHS3 Compliant, meeting current environmental and regulatory requirements.

Electrical Performance: The 5KP8.0CA provides equivalent voltage protection at the 8V standoff level with superior transient handling capability. The enhanced peak pulse current (375A) and power rating (5000W) represent performance improvements that do not compromise circuit compatibility.

Package Compatibility: Both components utilize identical P600 axial through-hole packaging, enabling direct mechanical and electrical substitution without PCB redesign.

Temperature Rating: Operating temperature ranges are identical, ensuring thermal performance equivalence across the specified operating environment.

Frequently Asked Questions (FAQ)

Q: Can the 5KP8.0CA be used as a direct replacement for the 3KP8.0C?

A: Yes. Both components share identical reverse standoff voltage (8V), bidirectional operation, P600 axial package, and through-hole mounting. The 5KP8.0CA provides enhanced peak pulse current and power handling within the same voltage class.

Q: What are the key differences between these two parts?

A: The primary differences are product status (5KP8.0CA is Active; 3KP8.0C is Obsolete), peak pulse current (375A vs. 220.6A), peak pulse power (5000W vs. 3000W), and clamping voltage (13.6V vs. 14.28V). These differences represent performance enhancements in the substitute part.

Q: Are there any package or mounting differences?

A: No. Both components use the P600 axial package with through-hole mounting. No PCB modifications are required for substitution.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the 3KP8.0C and 5KP8.0CA are ROHS3 Compliant and operate across the same temperature range (-55°C ~ 175°C TJ).

Q: Why does the 5KP8.0CA have a lower clamping voltage?

A: The 5KP8.0CA's lower maximum clamping voltage (13.6V vs. 14.28V) represents improved transient suppression performance. This characteristic is within acceptable substitution parameters for the 8V voltage class.

Q: Is the higher peak pulse rating of the 5KP8.0CA a concern for circuit compatibility?

A: No. Higher peak pulse current and power ratings indicate enhanced capability and do not create compatibility issues. The component will operate safely within the circuit's transient protection requirements.