3KP7.0 Equivalent & Substitute Parts

Part Overview

The 3KP7.0 is a unidirectional 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 a 12.6V maximum clamping voltage and 250A peak pulse current capability in a P600 axial through-hole package. The product is currently obsolete, making identification of suitable equivalent and substitute parts essential for ongoing system maintenance and new design implementations.

Substiute Parts

3KP7.0

Littelfuse Inc.In Stock: 10053KP7.0 Datasheet

Current PartRFQ

5KP7.0A

Littelfuse Inc.In Stock: 32705KP7.0A Datasheet

DirectRFQ

1.5KE8.2A-TP

Micro Commercial CoIn Stock: 17661.5KE8.2A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP7.0 is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff: 7V nominal
• Voltage - Clamping (Max) @ Ipp: 12.6V maximum
• Unidirectional configuration (single channel)
• Through-hole axial mounting
• Operating temperature range: -55°C ~ 175°C
• RoHS3 compliance

Substitute parts must maintain compatibility within these specified parameters. The 5KP7.0A provides higher peak pulse current and power dissipation while maintaining the same standoff and clamping voltage specifications. The 1.5KE8.2A-TP offers a different package form factor (DO-201AE) with comparable voltage characteristics but reduced power handling capability.

Parameter Comparison

Engineering Selection Recommendations

The 5KP7.0A is the primary substitute for the 3KP7.0, offering identical voltage specifications and package form factor with enhanced current and power handling capabilities. Both components are manufactured by Littelfuse Inc., maintain ROHS3 compliance, and share the same P600 axial through-hole package. The 5KP7.0A is currently in active production status, ensuring long-term availability.

The 1.5KE8.2A-TP, manufactured by Micro Commercial Co, provides an alternative with comparable voltage characteristics and ROHS3 compliance. However, this substitute employs a different package form factor (DO-201AE) and reduced power dissipation (1500W versus 3000W). Selection of this part requires mechanical redesign considerations for board layout and mounting.

Frequently Asked Questions (FAQ)

Q: Can the 5KP7.0A directly replace the 3KP7.0 without circuit modifications?

A: Yes. The 5KP7.0A maintains identical reverse standoff voltage (7V), comparable clamping voltage (12V versus 12.6V), and the same P600 axial through-hole package. The enhanced current and power ratings provide improved transient protection margin.

Q: What are the key differences between the 5KP7.0A and 1.5KE8.2A-TP substitutes?

A: The 5KP7.0A retains the original P600 package with 5000W power dissipation. The 1.5KE8.2A-TP uses a DO-201AE package with 1500W power dissipation. Package selection depends on board layout constraints and transient energy requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 5KP7.0A and 1.5KE8.2A-TP are both ROHS3 compliant, matching the compliance status of the original 3KP7.0.

Q: What is the operating temperature range for substitute parts?

A: Both substitute parts operate across the same temperature range as the original component: -55°C to 175°C junction temperature.

Q: Why is the 3KP7.0 listed as obsolete?

A: The 3KP7.0 has been discontinued by Littelfuse Inc. The 5KP7.0A represents the active production equivalent with enhanced specifications.