5KP18AE3/TR13 Equivalent & Substitute Parts

Part Overview

The 5KP18AE3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This component features an 18V reverse standoff voltage with a 29.2V maximum clamping voltage and 171A peak pulse current capability, housed in a P600 axial through-hole package. The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical performance parameters and compatible mechanical packaging configurations.

Substiute Parts

5KP18AE3/TR13

Microchip TechnologyIn Stock: 9725KP18AE3/TR13 Datasheet

Current PartRFQ

5KP18A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 83655KP18A-E3/54 Datasheet

DirectRFQ

5KP18A

Diotec SemiconductorIn Stock: 42185KP18A Datasheet

SimilarRFQ

5KP18A-TP

Micro Commercial CoIn Stock: 20485KP18A-TP Datasheet

SimilarRFQ

LCE15A

Littelfuse Inc.In Stock: 2372LCE15A Datasheet

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LCE18A

Littelfuse Inc.In Stock: 1007LCE18A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP18AE3/TR13 are classified into two categories based on electrical and mechanical compatibility:

Direct Electrical Equivalents (Full Parameter Match): Parts that maintain identical voltage ratings (18V reverse standoff, 20V breakdown minimum, 29.2V clamping maximum), peak pulse current (171A), and power dissipation (5000W). These parts are interchangeable in applications where the original specification is required. Packaging may differ (Tape & Reel versus Cut Tape), but the P600 axial through-hole form factor remains consistent.

Similar Electrical Equivalents (Reduced Performance): Parts that share the same voltage ratings and general application category but with reduced peak pulse current and power dissipation capabilities. These parts are suitable for applications with lower transient energy requirements.

Key Parameters Determining Substitution:

• Voltage - Reverse Standoff: 18V (primary selection criterion)
• Voltage - Clamping (Max) @ Ipp: 29.2V (protection threshold)
• Current - Peak Pulse: 171A (full equivalency) or lower (reduced performance)
• Power - Peak Pulse: 5000W (full equivalency) or lower (reduced performance)
• Mounting Type: Through Hole (required)
• Package Configuration: P600 or compatible axial packages

Parameter Comparison

Engineering Selection Recommendations

Full Electrical Equivalents (Direct Substitution):

The 5KP18A-E3/54 (Vishay General Semiconductor), 5KP18A (Diotec Semiconductor), and 5KP18A-TP (Micro Commercial Co) are direct electrical equivalents to the 5KP18AE3/TR13. All three parts maintain identical voltage ratings (18V standoff, 20V breakdown, 29.2V clamping), peak pulse current (171A), and power dissipation (5000W). All substitute parts are ROHS3 compliant and rated for the same operating temperature range (-55°C to 175°C). These parts are suitable for direct replacement in applications requiring full 5000W peak pulse power handling.

The 5KP18A-E3/54 is available in Cut Tape packaging with 8300 units in stock. The 5KP18A is available in Tape & Reel packaging with 4200 units in stock. The 5KP18A-TP is available in Cut Tape packaging with 2026 units in stock. Selection between these three parts should be based on packaging format requirements and inventory availability.

Reduced Performance Equivalents (Conditional Substitution):

The LCE18A (Littelfuse Inc.) maintains identical voltage ratings (18V standoff, 20V breakdown, 29.2V clamping) but with reduced peak pulse current (51A) and power dissipation (1500W). This part is suitable for applications with lower transient energy requirements. The LCE18A uses a DO-201 package configuration, which differs from the P600 package of the main part. Physical board layout modifications may be required for mechanical accommodation.

The LCE15A (Littelfuse Inc.) has reduced voltage ratings (15V standoff, 16.7V breakdown, 24.4V clamping) and reduced peak pulse current (61A) and power dissipation (1500W). This part is not recommended as a direct substitute due to lower voltage protection thresholds. Use only in applications where 15V standoff voltage is acceptable.

All substitute parts maintain ROHS3 compliance and are rated for the same operating temperature range as the main part.

Frequently Asked Questions (FAQ)

Q: Can the 5KP18A-E3/54 be used as a direct replacement for the 5KP18AE3/TR13?

A: Yes. The 5KP18A-E3/54 is a direct electrical equivalent with identical voltage ratings (18V standoff, 29.2V clamping), peak pulse current (171A), and power dissipation (5000W). The primary difference is packaging format (Cut Tape versus Tape & Reel). Both parts are ROHS3 compliant and rated for -55°C to 175°C operation.

Q: What is the difference between the 5KP18A and 5KP18A-TP?

A: Both parts are electrical equivalents with identical voltage and current ratings. The 5KP18A uses a P600 axial package, while the 5KP18A-TP uses an R-6 axial package. Both are through-hole mounted components. The R-6 package may have different physical dimensions; verify mechanical compatibility with your board layout before substitution.

Q: Can the LCE18A replace the 5KP18AE3/TR13?

A: The LCE18A maintains identical voltage ratings but has reduced peak pulse current (51A versus 171A) and power dissipation (1500W versus 5000W). It is suitable only for applications with lower transient energy requirements. The LCE18A uses a DO-201 package, requiring mechanical board layout verification. Do not use in applications requiring 5000W peak pulse power handling.

Q: Why is the LCE15A listed as a substitute if it has different voltage ratings?

A: The LCE15A is listed as a similar equivalent but is not recommended for direct substitution. It has a lower reverse standoff voltage (15V versus 18V) and lower clamping voltage (24.4V versus 29.2V). Use only in applications where 15V standoff voltage is acceptable and lower transient energy protection is sufficient.

Q: What packaging formats are available for the 5KP18 series equivalents?

A: The 5KP18AE3/TR13 is supplied in Tape & Reel (TR) format. Direct equivalents are available in Tape & Reel (5KP18A) and Cut Tape (5KP18A-E3/54, 5KP18A-TP) formats. The LCE series parts use DO-201 package format. Verify packaging compatibility with your assembly process before selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (5KP18A-E3/54, 5KP18A, 5KP18A-TP, LCE18A, and LCE15A) are ROHS3 compliant, matching the compliance status of the main part 5KP18AE3/TR13.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts are rated for -55°C to 175°C operating temperature range, with the exception of the 5KP18A (Diotec Semiconductor), which is rated for -50°C to 175°C. Verify the lower temperature limit requirement for your application before selecting the Diotec part.

Q: Can I use the 5KP18A-TP if the peak pulse current specification is not listed?

A: The 5KP18A-TP has an unlisted peak pulse current specification in the provided data. However, it maintains the same 5000W peak pulse power rating as the main part. For applications requiring confirmed 171A peak pulse current specification, use the 5KP18A-E3/54 or 5KP18A instead.