5KP43AE3/TR13 Equivalent & Substitute Parts

Part Overview

The 5KP43AE3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This component features a 43V reverse standoff voltage with a 69.4V maximum clamping voltage and 72A peak pulse current capability in a through-hole P600 axial package. The part is currently active in production and ROHS3 compliant.

Substitute parts are identified to provide design flexibility due to packaging availability, inventory levels, or equivalent performance specifications across multiple manufacturers including Vishay General Semiconductor, Littelfuse Inc., Micro Commercial Co, and Fairchild Semiconductor.

Substiute Parts

5KP43AE3/TR13

Microchip TechnologyIn Stock: 7095KP43AE3/TR13 Datasheet

Current PartRFQ

5KP43A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 81645KP43A-E3/54 Datasheet

DirectRFQ

5KP43A

Littelfuse Inc.In Stock: 34105KP43A Datasheet

SimilarRFQ

5KP43A-TP

Micro Commercial CoIn Stock: 11985KP43A-TP Datasheet

SimilarRFQ

5KP48A

Littelfuse Inc.In Stock: 88785KP48A Datasheet

SimilarRFQ

P6KE51A

Fairchild SemiconductorIn Stock: 18607P6KE51A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP43AE3/TR13 is determined by the following critical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 43V
• Voltage - Clamping (Max) @ Ipp: 69.4V
• Voltage - Breakdown (Min): 47.8V
• Current - Peak Pulse (10/1000µs): 72A minimum
• Power - Peak Pulse: 5000W
• Type: Zener, Unidirectional
• Operating Temperature: -55°C to 175°C (TJ)
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant

Direct Equivalents maintain all electrical parameters and differ only in packaging format (Tape & Reel versus Cut Tape) or manufacturer designation.

Similar Substitutes maintain core voltage and power specifications but may exhibit minor variations in peak pulse current or package case designation while remaining functionally compatible for general-purpose transient voltage suppression applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection:

The 5KP43A-E3/54 (Vishay General Semiconductor - Diodes Division) is the primary direct equivalent, maintaining identical electrical specifications (43V standoff, 69.4V clamping, 72A peak pulse) and P600 axial package configuration. This part is ROHS3 compliant and carries Active product status. The primary distinction is packaging format (Cut Tape versus Tape & Reel) and series designation (TransZorb®).

Compatible Substitute Selection:

The 5KP43A (Littelfuse Inc.) provides functional equivalence with marginally higher peak pulse current (73.5A versus 72A), maintaining all voltage specifications and P600 package compatibility. ROHS3 compliance and Active status are confirmed.

Alternative Package Consideration:

The 5KP43A-TP (Micro Commercial Co) maintains electrical specifications but uses an R-6 axial package instead of P600. This substitution requires mechanical compatibility verification in the target application due to package case differences.

Higher Voltage Alternative:

The 5KP48A (Littelfuse Inc.) operates at 48V reverse standoff with 77.4V clamping voltage, suitable only for applications requiring higher voltage suppression thresholds. Peak pulse current is reduced to 65.9A. This part is not interchangeable with the 5KP43AE3/TR13 for 43V protection circuits.

Limited Data Availability:

The P6KE51A (Fairchild Semiconductor) is listed as a substitute but lacks complete electrical parameter documentation in the provided specifications. Full datasheet verification is required before selection.

Frequently Asked Questions (FAQ)

Q: Can the 5KP43A-E3/54 directly replace the 5KP43AE3/TR13 in production?

A: Yes. Both parts maintain identical electrical specifications (43V standoff, 69.4V clamping, 72A peak pulse current, 5000W peak power) and through-hole P600 axial package configuration. The difference is packaging format (Cut Tape versus Tape & Reel) and manufacturer. Both are ROHS3 compliant and Active status.

Q: What is the difference between the 5KP43A and 5KP43AE3/TR13?

A: The 5KP43A (Littelfuse) exhibits slightly higher peak pulse current (73.5A versus 72A) while maintaining identical voltage specifications and P600 package. All other electrical and thermal parameters are equivalent. Both are ROHS3 compliant.

Q: Is the 5KP43A-TP a suitable replacement?

A: The 5KP43A-TP maintains identical electrical specifications but uses an R-6 axial package instead of P600. Mechanical compatibility with the circuit board layout and component spacing must be verified before substitution.

Q: Why is the 5KP48A listed as a substitute if it has different voltage ratings?

A: The 5KP48A is listed as a similar substitute due to identical power rating (5000W) and through-hole mounting, but it is not a direct replacement. The 48V standoff and 77.4V clamping voltage are higher than the 43V/69.4V specifications of the 5KP43AE3/TR13. Selection of the 5KP48A requires circuit redesign for higher voltage protection thresholds.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (5KP43A-E3/54, 5KP43A, 5KP43A-TP, and 5KP48A) are ROHS3 compliant and carry Active product status.

Q: What is the operating temperature range for these TVS diodes?

A: All listed substitutes operate across the temperature range of -55°C to 175°C (junction temperature), matching the 5KP43AE3/TR13 specification.

Q: Can I use the P6KE51A as a substitute?

A: The P6KE51A is listed as a substitute but complete electrical parameter specifications are not provided in the available documentation. Full datasheet review and electrical parameter verification are required before selection.