3KP10C-B Equivalent & Substitute Parts

Part Overview

The 3KP10C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional Zener diode features a 10V reverse standoff voltage and 17.85V maximum clamping voltage with 176.5A peak pulse current capability in a through-hole P600 axial package. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

3KP10C-B

Littelfuse Inc.In Stock: 11893KP10C-B Datasheet

Current PartRFQ

5KP10CA-B

Littelfuse Inc.In Stock: 7465KP10CA-B Datasheet

DirectRFQ

3KP10CA-TP

Micro Commercial CoIn Stock: 10363KP10CA-TP Datasheet

MFR RecommendedRFQ

5KP10CA-TP

Micro Commercial CoIn Stock: 13565KP10CA-TP Datasheet

MFR RecommendedRFQ

5KP10CAE3/TR13

Microchip TechnologyIn Stock: 10355KP10CAE3/TR13 Datasheet

MFR RecommendedRFQ

5KP10CE3/TR13

Microchip TechnologyIn Stock: 11055KP10CE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 3KP10C-B is determined by the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 10V and clamping voltage in the 17V–18.8V range
• Current Capability: Peak pulse current of 176.5A or higher
• Power Dissipation: Peak pulse power of 3000W or higher
• Package Compatibility: Through-hole axial configuration (P600 or R-6)
• Operating Temperature Range: -55°C to 175°C (TJ)
• Type: Bidirectional Zener TVS diode for general-purpose applications

Substitute parts are grouped into two categories based on these parameters:

Category 1 – Direct Electrical Equivalents (Same Current Rating) Parts maintaining 176.5A peak pulse current with compatible voltage and power ratings in P600 or R-6 packages.

Category 2 – Enhanced Performance Substitutes (Higher Current Rating) Parts with 300A or higher peak pulse current, providing superior transient protection capability while maintaining voltage compatibility and package form factors.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance)

The 3KP10CA-TP (Micro Commercial Co) is the primary direct equivalent, maintaining identical 176.5A peak pulse current and 3000W power dissipation. This part is currently active and available. The R-6 axial package is mechanically compatible with P600 footprints in through-hole applications. Both parts are ROHS3 compliant and rated for -55°C to 175°C operation.

For Enhanced Protection (Higher Current Capability)

The 5KP10CA-B (Littelfuse Inc.) provides superior transient suppression with 300A peak pulse current and 5000W power dissipation while maintaining the same 10V reverse standoff voltage and P600 package. This part is active and ROHS3 compliant, offering direct package compatibility with the original 3KP10C-B.

The 5KP10CAE3/TR13 (Microchip Technology) offers 294A peak pulse current in P600 packaging with 5000W power dissipation. This part is supplied on tape and reel and is ROHS3 compliant with REACH unaffected status.

The 5KP10CE3/TR13 (Microchip Technology) provides the highest clamping voltage at 18.8V with 266A peak pulse current and 5000W power dissipation in P600 packaging. This part is suitable for applications requiring additional voltage margin and is ROHS3 compliant.

For Alternative Package Consideration

The 5KP10CA-TP (Micro Commercial Co) in R-6 axial package offers 5000W power dissipation with active product status and REACH unaffected certification. This part is available in cut tape packaging.

All substitute parts maintain the -55°C to 175°C operating temperature range and are suitable for general-purpose transient voltage suppression applications.

Frequently Asked Questions (FAQ)

Q: Can I use a 5KP series part as a direct replacement for the 3KP10C-B?

A: Yes. The 5KP series parts (5KP10CA-B, 5KP10CAE3/TR13, 5KP10CE3/TR13) are electrically compatible substitutes. They maintain the same 10V reverse standoff voltage and operate within the same temperature range. The primary difference is higher peak pulse current (300A, 294A, or 266A versus 176.5A) and increased power dissipation (5000W versus 3000W), which provides enhanced protection capability without compromising circuit compatibility.

Q: What is the difference between P600 and R-6 packages?

A: Both P600 and R-6 are through-hole axial package formats for TVS diodes. P600 and R-6 are mechanically compatible in standard through-hole PCB layouts. The primary difference is the supplier designation; both accommodate the same lead spacing and hole diameter requirements.

Q: Why is the 3KP10C-B obsolete?

A: The 3KP10C-B has been discontinued by Littelfuse Inc. The 5KP series represents the current product line for this voltage and current class, offering improved performance characteristics and better long-term availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting current environmental and material restriction requirements.

Q: Which substitute part should I select for maximum protection?

A: Selection depends on application requirements. For identical current handling, use 3KP10CA-TP. For enhanced protection with higher current capability, use 5KP10CA-B (300A) or 5KP10CAE3/TR13 (294A). For applications requiring higher clamping voltage margin, use 5KP10CE3/TR13 (18.8V clamp).

Q: Are there packaging format differences I should consider?

A: The 5KP10CAE3/TR13 and 5KP10CE3/TR13 are supplied on tape and reel (TR), suitable for automated assembly. The 5KP10CA-B is supplied in bulk. The 3KP10CA-TP and 5KP10CA-TP are available in cut tape (CT) format. Select based on your procurement and assembly process requirements.