3KP7.0C Equivalent & Substitute Parts

Part Overview

The 3KP7.0C is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection in through-hole applications. This component features a 7V reverse standoff voltage, 12.6V maximum clamping voltage, and 250A peak pulse current capability with 3kW peak pulse power handling. The 3KP7.0C is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

3KP7.0C

Littelfuse Inc.In Stock: 8953KP7.0C Datasheet

Current PartRFQ

5KP7.0CA

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP7.0C is determined by the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 7V and breakdown voltage minimum of 7.37V establish the voltage protection threshold
• Package Compatibility: P600 axial through-hole package ensures mechanical and electrical compatibility with existing PCB layouts
• Bidirectional Configuration: Single bidirectional channel requirement for symmetric transient suppression
• Temperature Range: Operating range of -55°C to 175°C defines thermal operating envelope
• Compliance: ROHS3 compliance and MSL 1 rating ensure regulatory and environmental compatibility

The 5KP7.0CA qualifies as a direct substitute based on matching voltage ratings, identical package type, bidirectional channel configuration, and equivalent temperature operating range. Both components share the same 7V reverse standoff voltage and P600 axial package specification.

Parameter Comparison

Engineering Selection Recommendations

The 5KP7.0CA is the qualified substitute for the obsolete 3KP7.0C. Both components maintain identical voltage ratings, package specifications, and temperature operating ranges. The 5KP7.0CA carries Active product status, ensuring long-term availability and supply chain continuity compared to the Obsolete 3KP7.0C.

Both components meet ROHS3 compliance requirements and carry MSL 1 (Unlimited) moisture sensitivity ratings, confirming equivalent environmental and regulatory compatibility. The 5KP7.0CA provides enhanced performance characteristics with higher peak pulse current (425A versus 250A) and greater peak pulse power handling (5kW versus 3kW), making it suitable for applications requiring equal or greater transient suppression capability.

Frequently Asked Questions (FAQ)

Q: Can the 5KP7.0CA directly replace the 3KP7.0C in existing designs?

A: Yes. Both components share identical voltage ratings (7V reverse standoff), matching P600 axial through-hole packages, and equivalent temperature operating ranges (-55°C to 175°C). Direct PCB substitution is mechanically and electrically compatible.

Q: What are the key differences between these two parts?

A: The primary differences are product status and performance ratings. The 5KP7.0CA is Active production status versus the Obsolete 3KP7.0C. The 5KP7.0CA provides higher peak pulse current (425A versus 250A) and greater peak pulse power (5kW versus 3kW). Voltage clamping characteristics are comparable (12V versus 12.6V maximum).

Q: Are there any compliance or certification differences?

A: Both components are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. Compliance profiles are equivalent.

Q: Why is the 5KP7.0CA rated for higher power dissipation?

A: The 5KP7.0CA is part of the 5KP series, which is designed for higher transient energy absorption. This enhanced capability does not affect voltage regulation characteristics and remains compatible with 7V protection applications.

Q: What packaging considerations apply to this substitution?

A: Both components use identical P600 axial through-hole packaging. No PCB layout modifications or mechanical adjustments are required for substitution.