5KP8.5CE3/TR13 Equivalent & Substitute Parts

Part Overview

The 5KP8.5CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with a reverse standoff voltage of 8.5V and provides peak pulse current handling of 314A at a clamping voltage of 15.9V. The component is packaged in P600 axial through-hole configuration and is currently in active production status with 929 pieces available in stock.

TVS diodes require substitute evaluation when original components face supply constraints, end-of-life transitions, or when alternative manufacturers offer equivalent electrical performance within specified parameters. Substitute parts must maintain compatibility across voltage ratings, current handling capacity, clamping characteristics, and physical packaging to ensure reliable circuit protection without redesign.

Substiute Parts

5KP8.5CE3/TR13

Microchip TechnologyIn Stock: 10195KP8.5CE3/TR13 Datasheet

Current PartRFQ

SA8.5CA

Taiwan Semiconductor CorporationIn Stock: 16110SA8.5CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP8.5CE3/TR13 is determined by the following critical parameters:

Voltage Compatibility: The reverse standoff voltage (8.5V typical) and breakdown voltage (9.44V minimum) must remain constant across substitute parts to maintain circuit protection thresholds. The clamping voltage specification establishes the maximum transient voltage presented to protected circuitry.

Current Handling: Peak pulse current rating (314A at 10/1000µs waveform) defines the maximum transient energy the device can suppress. Substitute parts must support equivalent or superior current capacity.

Power Dissipation: Peak pulse power rating (5000W) indicates thermal performance during transient events. This parameter constrains the physical size and thermal characteristics of acceptable substitutes.

Package and Mounting: Through-hole axial packages (P600 or equivalent DO-204AC/DO-15 configurations) ensure mechanical compatibility with existing PCB layouts and assembly processes.

Environmental and Compliance: Operating temperature range (-55°C to 175°C), RoHS3 compliance, and MSL rating (1 - Unlimited) establish baseline reliability and regulatory requirements.

The SA8.5CA from Taiwan Semiconductor Corporation qualifies as a substitute based on matching voltage parameters (8.5V standoff, 9.44V breakdown) and identical environmental specifications. However, the SA8.5CA exhibits reduced peak pulse current (36A) and power dissipation (500W) compared to the 5KP8.5CE3/TR13, restricting its application to circuits with lower transient energy requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (5KP8.5CE3/TR13): Retain the original Microchip part for applications requiring full 314A peak pulse current and 5000W power dissipation. This device is actively manufactured, RoHS3 compliant, and maintains unlimited moisture sensitivity rating. The P600 axial package provides standard through-hole compatibility.

Substitute Selection (SA8.5CA): The Taiwan Semiconductor SA8.5CA is suitable only for applications where transient energy levels do not exceed 500W peak pulse power and peak currents remain below 36A. Both devices share identical voltage thresholds (8.5V standoff, 9.44V breakdown) and operating temperature ranges, ensuring equivalent circuit protection activation characteristics. The SA8.5CA uses DO-204AC (DO-15) axial packaging, which is mechanically compatible with standard through-hole PCB layouts. Both parts maintain active production status and full RoHS3 compliance.

Compliance Verification: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. MSL rating of 1 (Unlimited) applies to both devices, eliminating moisture-related storage constraints.

Frequently Asked Questions (FAQ)

Q: Can the SA8.5CA directly replace the 5KP8.5CE3/TR13 in all applications?

A: No. While both devices share identical voltage specifications (8.5V standoff, 9.44V breakdown), the SA8.5CA is rated for only 36A peak pulse current and 500W power dissipation compared to the 5KP8.5CE3/TR13's 314A and 5000W ratings. Substitution is valid only for circuits where transient energy remains within the SA8.5CA's power budget.

Q: Are the P600 and DO-204AC packages physically interchangeable?

A: Both packages are axial through-hole configurations suitable for standard PCB layouts. P600 and DO-204AC (DO-15) are distinct package designations with similar form factors. Verify PCB pad spacing and hole diameter specifications before substitution to confirm mechanical compatibility.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both the 5KP8.5CE3/TR13 and SA8.5CA operate across -55°C to 175°C junction temperature range, are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). Compliance requirements are identical.

Q: What is the primary difference between these two TVS diodes?

A: The primary difference is transient energy handling capacity. The 5KP8.5CE3/TR13 handles 314A peak pulse current and 5000W power dissipation, while the SA8.5CA handles 36A and 500W. Voltage protection thresholds are identical. Select based on circuit transient energy requirements.

Q: Can I use the SA8.5CA in a high-energy transient environment designed for the 5KP8.5CE3/TR13?

A: No. Using an undersized TVS diode in a high-energy environment risks device failure and loss of circuit protection. The SA8.5CA must be used only in applications with transient energy levels within its 500W power rating.

Q: Are there inventory considerations between these parts?

A: The 5KP8.5CE3/TR13 has 929 pieces in stock, while the SA8.5CA has 16,100 pieces available. Availability may influence substitution decisions in supply-constrained scenarios, provided application requirements align with the SA8.5CA's reduced power rating.