Equivalent & Substitute Parts for 3KP180C

Part Overview

The 3KP180C is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 180V reverse standoff voltage rating and a 303.45V maximum clamping voltage with 10.4A peak pulse current capability in a through-hole P600 axial package. The 3KP180C is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement.

Substiute Parts

3KP180C

Littelfuse Inc.In Stock: 7533KP180C Datasheet

Current PartRFQ

5KP180CA

Littelfuse Inc.In Stock: 28165KP180CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP180C is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): Must match at 180V to maintain circuit protection thresholds
• Package / Case: Must be P600 axial through-hole to ensure mechanical and electrical compatibility
• Bidirectional Channels: Must be 1 channel for equivalent functionality
• Type: Must be Zener-type TVS diode
• Operating Temperature Range: Must support -55°C to 175°C minimum

The 5KP180CA qualifies as a direct substitute based on these parameters. While the 5KP180CA exhibits improved electrical performance characteristics (higher peak pulse current and power dissipation), it maintains identical voltage standoff, package configuration, and thermal operating range, making it functionally compatible for the 3KP180C application.

Parameter Comparison

Engineering Selection Recommendations

The 5KP180CA is the qualified substitute for the obsolete 3KP180C. Selection is based on the following engineering criteria:

• Product Status: The 5KP180CA is active and in production, ensuring long-term availability and supply chain continuity for the 3KP180C application.
• Compliance: Both components maintain ROHS3 compliance and identical regulatory classifications (ECCN: EAR99, HTSUS: 8541.10.0080).
• Electrical Compatibility: Identical reverse standoff voltage (180V) and operating temperature range (-55°C to 175°C) ensure drop-in compatibility.
• Package Compatibility: Both components use the P600 axial through-hole package, requiring no PCB layout modifications.
• Enhanced Performance: The 5KP180CA provides higher peak pulse current (17.5A vs. 10.4A) and power dissipation (5000W vs. 3000W), offering improved transient protection margin without compromising circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the 5KP180CA be used as a direct replacement for the 3KP180C?

A: Yes. Both components share identical reverse standoff voltage (180V), operating temperature range (-55°C to 175°C), and P600 axial through-hole package configuration. No circuit modifications or PCB redesign are required.

Q: What are the key differences between the 3KP180C and 5KP180CA?

A: The primary differences are product status and performance ratings. The 3KP180C is obsolete, while the 5KP180CA is active. The 5KP180CA provides higher peak pulse current (17.5A vs. 10.4A) and peak pulse power (5000W vs. 3000W). The 5KP180CA also exhibits a lower maximum clamping voltage (292V vs. 303.45V) and higher minimum breakdown voltage (200V vs. 189.45V).

Q: Are there any package or mounting considerations when substituting the 5KP180CA for the 3KP180C?

A: No. Both components use identical P600 axial through-hole packaging. Existing PCB footprints, lead spacing, and mounting methods are fully compatible without modification.

Q: Do both components meet the same regulatory and compliance standards?

A: Yes. Both the 3KP180C and 5KP180CA are ROHS3 compliant, carry MSL rating of 1 (Unlimited), and share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: Why does the 5KP180CA have a lower clamping voltage than the 3KP180C?

A: The 5KP180CA is from the higher-performance 5KP series, which is optimized for lower clamping voltage and higher current handling. This represents an engineering improvement in transient suppression efficiency while maintaining the same standoff voltage protection threshold.