5KP8.5AE3/TR13 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP8.5AE3/TR13 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This unidirectional Zener diode operates with an 8.5V reverse standoff voltage and provides 14.4V maximum clamping voltage at peak pulse current. The component is packaged in P600 axial through-hole configuration and rated for 5000W peak pulse power dissipation. As an active product with ROHS3 compliance and unlimited moisture sensitivity rating, equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

5KP8.5AE3/TR13

Microchip TechnologyIn Stock: 9705KP8.5AE3/TR13 Datasheet

Current PartRFQ

5KP8.5A

LittelfuseIn Stock: 3001105KP8.5A Datasheet

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SA8.5A

Taiwan Semiconductor CorporationIn Stock: 8461SA8.5A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP8.5AE3/TR13 is determined by strict alignment of the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 8.5V
• Voltage - Breakdown (Min): 9.44V
• Voltage - Clamping (Max) @ Ipp: 14.4V
• Type: Zener, Unidirectional
• Unidirectional Channels: 1

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: P600 Axial or equivalent axial through-hole configuration

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• Product Status: Active

Substitute parts are grouped into two categories based on package compatibility:

Category A - Full Package Compatibility (P600 Axial): Parts maintaining identical P600 axial packaging with electrical parameters within specification tolerance.

Category B - Alternative Package Compatibility (DO-204AC/DO-15 Axial): Parts with equivalent electrical voltage parameters but different axial package form factor, suitable for applications where package footprint variation is acceptable.

Parameter Comparison

Engineering Selection Recommendations

5KP8.5A (Littelfuse) - Primary Substitute

The 5KP8.5A maintains full electrical and mechanical compatibility with the 5KP8.5AE3/TR13. Both components share identical voltage specifications (8.5V reverse standoff, 9.44V breakdown minimum, 14.4V clamping maximum), equivalent peak pulse current ratings (347A vs. 354.2A), and identical 5000W power dissipation. The P600 axial package is identical, enabling direct board-level substitution without layout modification. Both parts are ROHS3 compliant with unlimited moisture sensitivity rating and active product status. This substitute is suitable for applications requiring seamless component interchange.

SA8.5A (Taiwan Semiconductor Corporation) - Alternative Substitute

The SA8.5A provides equivalent voltage protection parameters (8.5V reverse standoff, 9.44V breakdown minimum, 14.4V clamping maximum) and operates within the same temperature range (-55 to 175°C). However, this part differs in two critical specifications: peak pulse current is rated at 36A (versus 347A for the main part) and peak pulse power is 500W (versus 5000W). The package is DO-204AC (DO-15) axial configuration rather than P600. This substitute is applicable only to applications with reduced current and power requirements. The alternative package form factor requires board layout evaluation for mechanical fit compatibility.

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity rating, and active product status, supporting regulatory and supply chain requirements equivalent to the main part.

Frequently Asked Questions (FAQ)

Q1: Can the 5KP8.5A (Littelfuse) be used as a direct replacement for the 5KP8.5AE3/TR13 (Microchip) without circuit modification?

A: Yes. The 5KP8.5A is electrically and mechanically equivalent. Both components have identical voltage specifications (8.5V reverse standoff, 14.4V clamping), equivalent peak pulse current (347A vs. 354.2A), identical 5000W power rating, and the same P600 axial through-hole package. No circuit or board layout modification is required.

Q2: What are the key differences between the SA8.5A and the 5KP8.5AE3/TR13?

A: The SA8.5A shares identical voltage protection parameters (8.5V reverse standoff, 14.4V clamping) and operating temperature range. However, it has significantly lower current and power ratings: 36A peak pulse current versus 347A, and 500W power dissipation versus 5000W. Additionally, the SA8.5A uses DO-204AC (DO-15) axial packaging instead of P600. The SA8.5A is suitable only for lower-power applications.

Q3: Can the SA8.5A be used in an application designed for the 5KP8.5AE3/TR13?

A: Only if the application's actual peak pulse current requirement is 36A or less and power dissipation is 500W or less. If the circuit requires the full 347A peak pulse current or 5000W power handling capability of the main part, the SA8.5A will not provide adequate protection and may fail under transient conditions. Verify application current and power requirements before substitution.

Q4: Are all three parts (5KP8.5AE3/TR13, 5KP8.5A, SA8.5A) RoHS3 compliant?

A: Yes. All three parts are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), supporting equivalent regulatory and environmental requirements.

Q5: What is the significance of the P600 versus DO-204AC package difference?

A: P600 and DO-204AC are both axial through-hole packages but have different physical dimensions and lead spacing. The P600 package is larger and accommodates higher power dissipation. If substituting the SA8.5A (DO-204AC) for the 5KP8.5AE3/TR13 (P600), verify that the board layout and component footprint can accommodate the different package geometry. Direct board-level substitution without layout modification is not possible between these packages.

Q6: Which substitute part should be selected for maximum supply chain flexibility?

A: The 5KP8.5A (Littelfuse) provides the highest compatibility and flexibility. It is electrically and mechanically identical to the main part, enabling direct substitution without design or layout changes. With 300,100 pieces in stock, it also offers superior inventory availability compared to the main part (917 pieces).