5KP43CE3/TR13 Equivalent & Substitute Parts

Part Overview

The 5KP43CE3/TR13 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This zener-type TVS diode features a 43V reverse standoff voltage, 76.7V maximum clamping voltage, and 5000W peak pulse power rating in a P600 axial through-hole package. The device is Active product status and RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified based on matching or compatible electrical characteristics including reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and power dissipation capability, combined with compatible through-hole mounting packages and operating temperature ranges.

Substiute Parts

5KP43CE3/TR13

Microchip TechnologyIn Stock: 7595KP43CE3/TR13 Datasheet

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5KP43CA

Littelfuse Inc.In Stock: 43425KP43CA Datasheet

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P6KE47CA

Diotec SemiconductorIn Stock: 25492P6KE47CA Datasheet

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P6KE56CA

Taiwan Semiconductor CorporationIn Stock: 58134P6KE56CA Datasheet

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SA48CA

Taiwan Semiconductor CorporationIn Stock: 300442SA48CA Datasheet

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SLD43-018-B

Littelfuse Inc.In Stock: 1494SLD43-018-B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP43CE3/TR13 are grouped into two categories based on package compatibility and electrical performance:

Category 1: P600 Package Equivalents (Direct Package Match) These substitutes maintain the P600 axial through-hole package and support the full 5000W peak pulse power rating. Substitution is valid when reverse standoff voltage is 43V and peak pulse current capability is 65A or greater.

Category 2: DO-15 Package Alternatives (Reduced Power Rating) These substitutes use the DO-15 (DO-204AC) axial through-hole package with reduced peak pulse power ratings (500W to 600W). Substitution is valid for applications where lower current handling (6.7A to 9.7A) and reduced power dissipation are acceptable, while maintaining compatible reverse standoff voltage ranges (40.2V to 48V).

Key Parameters Determining Substitution:

• Reverse Standoff Voltage: 43V ± tolerance
• Bidirectional Channels: 1
• Type: Zener
• Mounting: Through Hole
• Operating Temperature: -55°C to 175°C minimum
• RoHS3 Compliance: Required
• Package: P600 (preferred) or DO-15 (alternative)

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (P600 Package Category):

The 5KP43CA (Littelfuse Inc.) and SLD43-018-B (Littelfuse Inc.) are direct functional equivalents in the P600 package. Both maintain the 43V reverse standoff voltage, 5000W peak pulse power rating, and -55°C to 175°C operating temperature range. The 5KP43CA offers higher peak pulse current (73.5A versus 65.2A) and lower clamping voltage (69.4V versus 76.7V), providing superior transient suppression performance. The SLD43-018-B is qualified to AEC-Q101 automotive standards and carries Littelfuse SLD series designation, suitable for automotive-grade applications requiring formal qualification documentation.

Secondary Substitutes (DO-15 Package Category):

The P6KE47CA (Diotec Semiconductor), P6KE56CA (Taiwan Semiconductor Corporation), and SA48CA (Taiwan Semiconductor Corporation) are functionally compatible alternatives using the smaller DO-15 package. These devices are suitable for applications with reduced current handling requirements (6.7A to 9.7A) and lower power dissipation (500W to 600W). The P6KE47CA operates at -50°C minimum temperature (versus -55°C for the main part). The P6KE56CA and SA48CA maintain the full -55°C to 175°C temperature range. All three DO-15 alternatives are RoHS3 compliant and suitable for general-purpose protection circuits where board space constraints or lower current transients justify the reduced power rating.

Compliance and Certification:

All identified substitutes maintain RoHS3 compliance, MSL 1 (unlimited) moisture sensitivity level, and REACH unaffected status, matching the regulatory profile of the 5KP43CE3/TR13. The SLD43-018-B provides additional AEC-Q101 automotive qualification for applications requiring formal automotive component certification.

Frequently Asked Questions (FAQ)

Q: Can the 5KP43CA replace the 5KP43CE3/TR13 in all applications?

A: Yes, the 5KP43CA is a direct substitute. Both devices share identical reverse standoff voltage (43V), operating temperature range (-55°C to 175°C), and peak pulse power rating (5000W). The 5KP43CA provides equivalent or superior performance with higher peak pulse current (73.5A) and lower clamping voltage (69.4V). The primary difference is packaging format: 5KP43CE3/TR13 is supplied in Tape & Reel (TR), while 5KP43CA is supplied in Cut Tape (CT).

Q: What is the difference between P600 and DO-15 package substitutes?

A: P600 and DO-15 are different axial through-hole package formats. The P600 package supports higher current handling and power dissipation (5000W, 65A+), while DO-15 packages are physically smaller and rated for lower power (500W to 600W, 6.7A to 9.7A). Both are through-hole mounted and suitable for axial component placement. Selection depends on circuit current requirements and available board space.

Q: Are DO-15 package alternatives suitable for high-current transient protection?

A: No. DO-15 package substitutes (P6KE47CA, P6KE56CA, SA48CA) are rated for peak pulse currents of 6.7A to 9.7A and power dissipation of 500W to 600W. The original 5KP43CE3/TR13 handles 65.2A and 5000W. DO-15 alternatives are appropriate only for applications with lower transient current levels. For high-current protection circuits, P600 package equivalents (5KP43CA or SLD43-018-B) are required.

Q: Does the SLD43-018-B automotive qualification affect general-purpose applications?

A: No. The SLD43-018-B is AEC-Q101 qualified, meaning it meets automotive industry standards. This qualification does not restrict use in general-purpose applications. The SLD43-018-B is suitable for both automotive and non-automotive circuits requiring 43V TVS protection with 5000W power rating and P600 package format.

Q: What is the significance of reverse standoff voltage matching?

A: Reverse standoff voltage determines the maximum voltage the TVS diode tolerates without conducting. The 5KP43CE3/TR13 has 43V reverse standoff voltage. Substitutes with 43V standoff (5KP43CA, SLD43-018-B) are direct equivalents. Substitutes with higher standoff voltages (P6KE56CA at 47.8V, SA48CA at 48V) conduct at higher voltages and may not suppress transients as effectively in circuits designed for 43V protection. Substitutes with lower standoff voltage (P6KE47CA at 40.2V) conduct earlier and may cause unwanted circuit interference.

Q: Can packaging format (Tape & Reel versus Cut Tape versus Bulk) affect electrical performance?

A: No. Packaging format (TR, CT, Bulk) affects only handling, storage, and assembly processes. Electrical performance is determined by the semiconductor die and package type (P600 or DO-15), not the supply format. The 5KP43CE3/TR13 (TR format) and 5KP43CA (CT format) are electrically identical despite different packaging formats.

Q: What operating temperature range should be verified when selecting a substitute?

A: The 5KP43CE3/TR13 operates from -55°C to 175°C junction temperature. All P600 package substitutes (5KP43CA, SLD43-018-B) maintain this range. The P6KE47CA (DO-15) operates from -50°C minimum, which is 5°C warmer than the original part. For applications requiring full -55°C operation, use P600 equivalents or the P6KE56CA and SA48CA DO-15 alternatives, which specify -55°C minimum temperature.