3KP7.0CA Equivalent & Substitute Parts

Part Overview

The 3KP7.0CA is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient protection applications. This component features a 7V reverse standoff voltage with 12V maximum clamping voltage and 250A peak pulse current capability in a through-hole P600 axial package. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

3KP7.0CA

Littelfuse Inc.In Stock: 8963KP7.0CA Datasheet

Current PartRFQ

5KP7.0CA

Littelfuse Inc.In Stock: 44785KP7.0CA Datasheet

DirectRFQ

3KP7.0CA-TP

Micro Commercial CoIn Stock: 7473KP7.0CA-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the 3KP7.0CA are identified based on strict electrical and mechanical parameter alignment. The critical substitution criteria are:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 7.78V
• Voltage - Clamping (Max) @ Ipp: 12V
• Operating Temperature: -55°C ~ 175°C (TJ)
• Bidirectional Channels: 1
• Type: Zener
• Applications: General Purpose
• RoHS Status: ROHS3 Compliant

Two substitute parts meet these core electrical parameters while maintaining compatibility with the original design specifications.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain full electrical compatibility with the 3KP7.0CA across all critical voltage and temperature parameters. Selection between substitutes should be based on the following factors:

5KP7.0CA (Littelfuse Inc.): This substitute offers active product status with higher peak pulse current (425A) and power dissipation (5kW) compared to the original specification. It maintains the identical P600 axial package, ensuring direct mechanical compatibility. ROHS3 compliance and REACH unaffected status are confirmed.

3KP7.0CA-TP (Micro Commercial Co): This substitute provides electrical equivalence with identical current and power ratings to the original part. It maintains active product status and ROHS3 compliance. The package designation differs (R-6 versus P600), requiring verification of mechanical fit within the target application.

Both substitutes are ROHS3 compliant and suitable for general-purpose transient protection applications within the specified temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 5KP7.0CA be used as a direct replacement for the 3KP7.0CA?

A: Yes. The 5KP7.0CA maintains identical voltage parameters (7V reverse standoff, 7.78V breakdown minimum, 12V clamping maximum) and operating temperature range. It is packaged in the same P600 axial configuration. The higher peak pulse current (425A versus 250A) and power dissipation (5kW versus 3kW) provide enhanced transient protection capability without compromising circuit compatibility.

Q: What is the difference between the 3KP7.0CA-TP and the original 3KP7.0CA?

A: The 3KP7.0CA-TP is electrically equivalent with identical voltage and current specifications. The primary difference is the package designation: R-6 axial versus P600 axial. Physical dimensions and lead spacing may differ between these package types. Mechanical fit verification is required before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both the 5KP7.0CA and 3KP7.0CA-TP are ROHS3 compliant, matching the compliance status of the original 3KP7.0CA.

Q: Why is the original 3KP7.0CA classified as obsolete?

A: The 3KP7.0CA is no longer in active production by Littelfuse Inc. The 5KP7.0CA serves as the active-status successor with enhanced performance specifications while maintaining full electrical compatibility.

Q: Can package differences affect circuit performance?

A: Package differences (P600 versus R-6) affect mechanical installation and board layout considerations but do not alter electrical performance. Verify that the substitute package dimensions and lead spacing are compatible with the target PCB design before implementation.