3KP6.0CA-B Equivalent & Substitute Parts

Part Overview

The 3KP6.0CA-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 6V reverse standoff voltage, 10.3V maximum clamping voltage, and 291.3A peak pulse current capability in a through-hole P600 axial package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

3KP6.0CA-B

Littelfuse Inc.In Stock: 10443KP6.0CA-B Datasheet

Current PartRFQ

5KP6.0CA-B

LittelfuseIn Stock: 8145KP6.0CA-B Datasheet

DirectRFQ

3KP6.0CA-TP

Micro Commercial CoIn Stock: 7873KP6.0CA-TP Datasheet

DirectRFQ

5KP6.0CA-TP

Micro Commercial CoIn Stock: 20555KP6.0CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3KP6.0CA-B are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Voltage - Reverse Standoff: 6V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 10.3V (exact match required)
• Operating Temperature Range: -55°C ~ 175°C (exact match required)
• Bidirectional Channels: 1 (exact match required)
• Type: Zener (exact match required)
• Mounting Type: Through Hole (exact match required)

Substitute parts are grouped into two categories based on current-handling capability and package configuration:

Category 1: Direct Electrical Equivalents (Same Current Rating)

• 3KP6.0CA-TP: Identical electrical specifications with alternative package designation (R-6 vs P600)

Category 2: Higher Current Capability Substitutes

• 5KP6.0CA-B: Enhanced peak pulse current (495.1A vs 291.3A) and power rating (5kW vs 3kW) while maintaining identical voltage parameters
• 5KP6.0CA-TP: Enhanced current and power capability with R-6 package configuration

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Obsolete Part Mitigation): The 3KP6.0CA-TP from Micro Commercial Co provides electrical equivalence with identical voltage and current specifications. This part is currently in active production status and maintains ROHS3 compliance. Package designation differs (R-6 vs P600), but both are standard axial through-hole configurations compatible with existing PCB layouts.

For Enhanced Performance Applications: The 5KP6.0CA-B and 5KP6.0CA-TP variants offer increased peak pulse current (495.1A) and power dissipation (5kW) while maintaining identical voltage regulation characteristics. These parts are suitable for applications requiring higher transient energy absorption. Both variants maintain active product status and full compliance certifications.

Compliance Considerations: All active substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5KP series parts directly replace the 3KP6.0CA-B? A: Yes. The 5KP6.0CA-B and 5KP6.0CA-TP maintain identical voltage parameters (6V standoff, 10.3V clamping) and operating temperature range. The increased current rating (495.1A vs 291.3A) and power capability (5kW vs 3kW) provide enhanced protection margin without affecting circuit compatibility.

Q: What is the difference between P600 and R-6 package designations? A: Both P600 and R-6 are axial through-hole package configurations for TVS diodes. The designation difference reflects manufacturer packaging standards. Both are mechanically compatible with standard through-hole PCB layouts and do not require design modifications.

Q: Is the 3KP6.0CA-TP a true equivalent to the 3KP6.0CA-B? A: Yes. The 3KP6.0CA-TP provides identical electrical specifications including voltage ratings, current capability (291.3A), and power dissipation (3kW). The manufacturer differs (Micro Commercial Co vs Littelfuse Inc.), and the package designation varies (R-6 vs P600), but electrical performance is equivalent.

Q: Why is the 3KP6.0CA-B classified as obsolete? A: Obsolete status indicates the part is no longer in active production by the original manufacturer. Active substitute parts with identical or enhanced specifications are available from alternative manufacturers and current production lines.

Q: Are all substitute parts RoHS compliant? A: All active substitute parts listed (3KP6.0CA-TP, 5KP6.0CA-B, 5KP6.0CA-TP) maintain ROHS3 compliance, meeting current environmental and regulatory requirements.

Q: What is the impact of selecting a higher-rated 5KP part in a 3KP application? A: The 5KP series provides increased transient energy absorption capability without affecting voltage regulation performance. Applications are protected against higher-magnitude transient events while maintaining identical clamping voltage characteristics.