5KP8.5E3/TR13 Equivalent & Substitute Parts

Part Overview

The 5KP8.5E3/TR13 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose transient voltage protection applications. This component features an 8.5V reverse standoff voltage with a 15.9V maximum clamping voltage and peak pulse current rating of 314A. The device is housed in a P600 axial through-hole package and is supplied on tape and reel. The part maintains active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and sourcing options while maintaining functional compatibility within specified electrical parameters.

Substiute Parts

5KP8.5E3/TR13

Microchip TechnologyIn Stock: 12205KP8.5E3/TR13 Datasheet

Current PartRFQ

SA8.5A

Taiwan Semiconductor CorporationIn Stock: 8461SA8.5A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP8.5E3/TR13 is determined by alignment of critical electrical and mechanical parameters. The primary substitution criteria are:

Voltage Parameters: The reverse standoff voltage (8.5V typical), breakdown voltage minimum (9.44V), and clamping voltage must remain within the specified ranges to ensure proper transient suppression at the intended circuit protection point.

Current Rating: Peak pulse current capacity must be evaluated against circuit requirements. The 5KP8.5E3/TR13 provides 314A peak pulse current; substitute parts with lower current ratings represent reduced transient energy handling capability.

Power Dissipation: Peak pulse power rating (5000W for the main part) indicates the maximum transient energy the device can safely dissipate. Substitute parts with lower power ratings have reduced transient energy absorption capacity.

Package and Mounting: Through-hole axial packages (P600 and DO-204AC/DO-15) are mechanically compatible for board-level substitution, though PCB layout modifications may be required due to different package dimensions.

Temperature Range: Operating temperature range of -55°C to 175°C (TJ) must be maintained for thermal compatibility.

Compliance: RoHS3 compliance and REACH unaffected status are required for regulatory alignment.

The SA8.5A from Taiwan Semiconductor Corporation qualifies as a substitute part based on matching voltage parameters (8.5V standoff, 9.44V breakdown minimum) and identical temperature operating range. However, the SA8.5A exhibits reduced peak pulse current (36A versus 314A) and lower peak pulse power (500W versus 5000W), indicating application-dependent suitability.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (5KP8.5E3/TR13): This part is recommended for applications requiring high transient energy absorption with peak pulse currents up to 314A and peak pulse power dissipation of 5000W. The P600 axial package provides standard through-hole mounting. Active product status ensures long-term availability and supply chain stability. ROHS3 compliance and REACH unaffected status satisfy regulatory requirements for industrial and commercial applications.

Substitute Selection (SA8.5A): This part is suitable for applications with lower transient energy requirements, specifically where peak pulse currents do not exceed 36A and peak pulse power dissipation remains below 500W. The SA8.5A maintains identical voltage parameters (8.5V standoff, 9.44V breakdown minimum) and operating temperature range, ensuring functional voltage regulation compatibility. The DO-204AC (DO-15) package is mechanically compatible with through-hole PCB designs, though package footprint differences require layout verification. Active product status and ROHS3 compliance provide regulatory alignment. This substitute is applicable for low-energy transient suppression in signal-level protection circuits.

Compliance Verification: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited moisture sensitivity), ensuring compatibility with standard manufacturing and storage environments.

Frequently Asked Questions (FAQ)

Q: Can the SA8.5A directly replace the 5KP8.5E3/TR13 in all applications?

A: Direct replacement is application-dependent. Both parts share identical voltage parameters (8.5V standoff, 9.44V breakdown minimum) and operating temperature range. However, the SA8.5A has significantly lower peak pulse current (36A versus 314A) and peak pulse power (500W versus 5000W). Substitution is valid only for circuits where transient energy levels remain within the SA8.5A's ratings. High-energy transient applications require the 5KP8.5E3/TR13.

Q: What are the package differences between P600 and DO-204AC (DO-15)?

A: Both are axial through-hole packages suitable for PCB mounting. The P600 package (used in 5KP8.5E3/TR13) and DO-204AC/DO-15 package (used in SA8.5A) have different physical dimensions and lead spacing. PCB layout modifications are necessary when substituting between these packages. Verify footprint compatibility with your circuit board design before implementation.

Q: Are both parts suitable for power line protection applications?

A: No. Both the 5KP8.5E3/TR13 and SA8.5A are designated for general-purpose transient voltage suppression, not power line protection. Power line protection applications require components specifically rated and certified for mains voltage transient suppression.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the 5KP8.5E3/TR13 and SA8.5A are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity level). Both parts satisfy standard industrial and commercial regulatory requirements.

Q: What is the significance of the clamping voltage difference (15.9V versus 14.4V)?

A: The clamping voltage represents the maximum voltage across the TVS diode during transient suppression at peak pulse current. The 5KP8.5E3/TR13 clamps at 15.9V while the SA8.5A clamps at 14.4V. For circuits with strict voltage regulation requirements, the lower clamping voltage of the SA8.5A may provide superior protection. However, this difference is only relevant if the circuit can tolerate the respective clamping voltages.

Q: How do I determine which part is suitable for my application?

A: Evaluate your circuit's transient energy requirements. Calculate the expected peak pulse current and power dissipation during transient events. If these values exceed 36A or 500W, the 5KP8.5E3/TR13 is required. If transient energy remains below these thresholds, the SA8.5A is applicable. Verify package compatibility with your PCB layout. Confirm that the 8.5V standoff voltage and 9.44V breakdown minimum are appropriate for your circuit protection point.

Q: Are both parts available in the same packaging format?

A: Yes. Both the 5KP8.5E3/TR13 and SA8.5A are supplied in tape and reel (TR) packaging, suitable for automated assembly processes. However, the physical package dimensions differ (P600 versus DO-204AC/DO-15), requiring layout verification.