3KP60CA-B Equivalent & Substitute Parts

Part Overview

The 3KP60CA-B is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 60V reverse standoff voltage, 96.8V maximum clamping voltage, and 31A peak pulse current capability in a through-hole P600 axial package. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives from active product lines to maintain design continuity and ensure supply chain availability.

Substiute Parts

3KP60CA-B

Littelfuse Inc.In Stock: 12333KP60CA-B Datasheet

Current PartRFQ

5KP60CA-B

LittelfuseIn Stock: 9145KP60CA-B Datasheet

DirectRFQ

15KP60CA-TP

Micro Commercial CoIn Stock: 102715KP60CA-TP Datasheet

MFR RecommendedRFQ

30KP60CA-TP

Micro Commercial CoIn Stock: 83130KP60CA-TP Datasheet

MFR RecommendedRFQ

3KP60CA-TP

Micro Commercial CoIn Stock: 8363KP60CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3KP60CA-B is determined by the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 60V and breakdown voltage minimum of 66.7V
• Clamping Voltage Compatibility: Maximum clamping voltage at Ipp within acceptable operating range (96.8V nominal)
• Thermal Performance: Operating temperature range of -55°C to 175°C (TJ)
• Mounting and Package: Through-hole axial configuration (P600 or equivalent R-6 package)
• Diode Type: Bidirectional Zener TVS with single channel
• Regulatory Compliance: ROHS3 compliance and EAR99 classification

Substitute parts are grouped into two categories: direct electrical equivalents with identical power ratings (3kW) and higher-power variants that maintain voltage specifications while offering increased transient energy absorption capability. All substitutes maintain the same voltage protection window and thermal operating range as the original component.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Identical Electrical Performance): The 3KP60CA-TP from Micro Commercial Co is the primary substitute, offering identical voltage specifications (60V standoff, 96.8V clamping), peak pulse current (31A), and power dissipation (3kW). This part maintains active product status and ROHS3 compliance. The package transitions from P600 to R-6 axial format, both standard through-hole configurations with equivalent mechanical footprints for typical PCB applications.

Higher Power Alternatives (Enhanced Transient Protection): The 5KP60CA-B, 15KP60CA-TP, and 30KP60CA-TP maintain identical voltage protection windows while providing increased peak pulse power handling (5kW, 15kW, and 30kW respectively). These variants are suitable for applications requiring greater transient energy absorption without modifying the voltage regulation characteristics. All maintain ROHS3 compliance and active product status.

Selection Criteria:

• For direct replacement in existing designs: 3KP60CA-TP
• For designs requiring enhanced transient margin: 5KP60CA-B (5kW), 15KP60CA-TP (15kW), or 30KP60CA-TP (30kW)
• All substitutes support the same operating temperature range (-55°C to 175°C) and regulatory requirements

Frequently Asked Questions (FAQ)

Q: Can the 3KP60CA-TP directly replace the 3KP60CA-B in existing designs? A: Yes. The 3KP60CA-TP provides identical electrical specifications: 60V reverse standoff, 96.8V clamping voltage, 31A peak pulse current, and 3kW power dissipation. The package changes from P600 to R-6 axial format, both standard through-hole configurations with compatible PCB mounting.

Q: What is the difference between the 3KP60CA-B and the higher-power variants (5KP, 15KP, 30KP)? A: The voltage protection specifications remain identical across all variants (60V standoff, 96.8V to 102V clamping). The primary difference is peak pulse power handling: 3kW (3KP), 5kW (5KP), 15kW (15KP), and 30kW (30KP). Higher-power variants absorb greater transient energy without changing voltage regulation characteristics.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitutes (3KP60CA-TP, 5KP60CA-B, 15KP60CA-TP, and 30KP60CA-TP) are ROHS3 compliant and carry EAR99 classification, matching the regulatory status of the original 3KP60CA-B.

Q: What is the difference between P600 and R-6 packages? A: Both are through-hole axial packages for TVS diodes. P600 and R-6 are equivalent mechanical formats with standard lead spacing suitable for PCB mounting. Package selection does not affect electrical performance or substitution eligibility.

Q: Can I use a higher-power variant (15KP or 30KP) as a substitute? A: Yes. Higher-power variants maintain the same voltage protection window and operating temperature range. They provide additional transient energy absorption margin without affecting circuit voltage regulation. This is a conservative design choice for applications with uncertain transient severity.

Q: Why is the 3KP60CA-B classified as obsolete? A: Obsolescence reflects manufacturer discontinuation. Active alternatives with identical or superior specifications are available from multiple manufacturers, ensuring continued design support and supply chain continuity.