5KP26A-B Equivalent & Substitute Parts

Part Overview

The 5KP26A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component operates with a 26V reverse standoff voltage and provides 5000W peak pulse power dissipation. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, packaging alternatives, and supply chain continuity.

Substiute Parts

5KP26A-B

Littelfuse Inc.In Stock: 11035KP26A-B Datasheet

Current PartRFQ

5KP26A

Littelfuse Inc.In Stock: 46525KP26A Datasheet

MFR RecommendedRFQ

5KP26A-TP

Micro Commercial CoIn Stock: 12345KP26A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP26A-B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 26V
• Voltage - Breakdown (Min): 28.9V
• Voltage - Clamping (Max) @ Ipp: 42.1V
• Current - Peak Pulse (10/1000µs): 121.1A or equivalent
• Power - Peak Pulse: 5000W (5kW)
• Unidirectional Channels: 1
• Operating Temperature Range: -55°C to 175°C (TJ)
• Mounting Type: Through Hole
• RoHS Status: RoHS3 Compliant

Substitute parts must maintain identical electrical performance across voltage and current ratings. Packaging variations (bulk versus cut tape) and case designations (P600 versus R-6) are permitted provided the through-hole axial mounting configuration is preserved and all electrical parameters remain within specification.

Parameter Comparison

Engineering Selection Recommendations

The 5KP26A (Littelfuse Inc., cut tape packaging) is the primary manufacturer-recommended substitute for the 5KP26A-B. Both parts are manufactured by Littelfuse Inc. and maintain identical electrical specifications and P600 axial package configuration. The difference in packaging format (bulk versus cut tape) does not affect electrical performance or mechanical compatibility in through-hole applications.

The 5KP26A-TP (Micro Commercial Co) is an alternative substitute that maintains all critical voltage and power parameters. This part uses an R-6 axial package designation instead of P600; however, both designations represent equivalent through-hole axial configurations. Peak pulse current specification is not provided for the 5KP26A-TP; verification against application requirements is necessary if peak pulse current is a critical design parameter.

All substitute parts carry RoHS3 compliance and MSL 1 (unlimited) ratings, ensuring compatibility with standard manufacturing and storage conditions. Product status is active for all listed parts, supporting long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the 5KP26A-B be directly replaced with the 5KP26A?

A: Yes. Both parts are manufactured by Littelfuse Inc. and share identical electrical specifications (26V standoff, 28.9V breakdown minimum, 42.1V clamping maximum, 5000W peak pulse power). The packaging difference (bulk versus cut tape) does not affect electrical performance or through-hole mounting compatibility.

Q: What is the difference between P600 and R-6 package designations?

A: Both P600 and R-6 are through-hole axial package designations for TVS diodes. The 5KP26A-TP uses R-6 designation while the 5KP26A-B uses P600. Both support equivalent mechanical mounting in through-hole applications.

Q: Is the 5KP26A-TP from Micro Commercial Co a suitable substitute?

A: The 5KP26A-TP maintains all critical voltage parameters (26V standoff, 28.9V breakdown, 42.1V clamping) and power rating (5000W). Peak pulse current is not specified for this part. If peak pulse current (121.1A) is a critical design requirement, this specification gap must be resolved with the manufacturer before selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 5KP26A, 5KP26A-TP, and 5KP26A-B all carry RoHS3 compliance certification and MSL 1 (unlimited) moisture sensitivity rating.

Q: What determines whether a part can substitute for the 5KP26A-B?

A: Substitution is determined by matching the following parameters: 26V reverse standoff voltage, 28.9V minimum breakdown voltage, 42.1V maximum clamping voltage, 5000W peak pulse power, unidirectional (single channel) configuration, through-hole axial mounting, and -55°C to 175°C operating temperature range. All listed substitutes meet these criteria.