15KP40A-TP Equivalent & Substitute Parts

Part Overview

The 15KP40A-TP is an active, through-hole Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co. This unidirectional zener diode is designed for general-purpose transient voltage suppression applications with a 40V reverse standoff voltage and 65.8V maximum clamping voltage. The part is supplied in R-6 axial packaging on tape and reel, with 15kW peak pulse power handling capability and full RoHS3 compliance. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the through-hole axial package category.

Substiute Parts

15KP40A-TP

Micro Commercial CoIn Stock: 107315KP40A-TP Datasheet

Current PartRFQ

15KPA40A

MDE Semiconductor IncIn Stock: 176315KPA40A Datasheet

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5KP40A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 17535KP40A-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 15KP40A-TP is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 40V
• Voltage - Clamping (Max) @ Ipp: 65.8V (±tolerance acceptable)
• Power - Peak Pulse: 15000W minimum
• Mounting Type: Through Hole
• Package / Case: Axial configuration
• Type: Zener, Unidirectional (1 channel)
• Operating Temperature Range: -55°C to 175°C (TJ)

Two substitute parts meet these criteria:

15KPA40A (MDE Semiconductor Inc): Matches all critical electrical parameters with identical 40V standoff, 65.8V clamping voltage, and 15kW peak pulse power. Through-hole axial mounting (P600 package). Active product status with RoHS3 compliance.

5KP40A-E3/54 (Vishay General Semiconductor - Diodes Division): Matches voltage parameters (40V standoff, 64.5V clamping) within acceptable tolerance. Through-hole axial mounting (P600 package). However, peak pulse power is 5kW, which is below the 15kW specification of the main part. RoHS non-compliant status limits suitability for regulated applications.

Parameter Comparison

Engineering Selection Recommendations

15KPA40A is the primary equivalent substitute for the 15KP40A-TP. Both parts maintain identical electrical specifications (40V standoff, 65.8V clamping, 15kW peak pulse power), operate across the same temperature range, and hold active product status with RoHS3 compliance. The P600 axial package is mechanically compatible with through-hole PCB layouts. This substitute is suitable for direct replacement in applications requiring full 15kW transient suppression capability.

5KP40A-E3/54 is a secondary substitute with voltage compatibility but reduced power handling. The 5kW peak pulse power rating is 67% lower than the main part specification. This substitute is appropriate only for applications where transient energy levels do not exceed 5kW. The RoHS non-compliant status restricts use in regulated industries and applications subject to environmental compliance requirements. Selection of this part requires explicit design review to confirm reduced power handling is acceptable.

Frequently Asked Questions (FAQ)

Q: Can 15KPA40A directly replace 15KP40A-TP without circuit modification?

A: Yes. Both parts share identical voltage ratings (40V standoff, 65.8V clamping) and peak pulse power (15kW). The P600 axial package is mechanically compatible with R-6 through-hole footprints. No circuit modification is required.

Q: What is the key difference between 15KPA40A and 5KP40A-E3/54?

A: The primary difference is peak pulse power handling. 15KPA40A delivers 15kW, matching the main part specification. 5KP40A-E3/54 is rated for 5kW only. Voltage parameters are similar across both substitutes. Selection depends on application transient energy requirements.

Q: Is 5KP40A-E3/54 suitable for all applications using 15KP40A-TP?

A: No. The 5kW power rating is insufficient for applications requiring full 15kW transient suppression. Additionally, RoHS non-compliance may disqualify this part from regulated applications. Use only when design analysis confirms transient energy remains below 5kW and RoHS compliance is not required.

Q: Are package differences between R-6 and P600 significant?

A: Both are through-hole axial packages with compatible PCB mounting. Physical dimensions may vary slightly, but electrical performance and thermal characteristics remain equivalent. Verify PCB footprint compatibility before substitution.

Q: What compliance certifications apply to these substitutes?

A: 15KPA40A holds RoHS3 compliance, matching the main part. 5KP40A-E3/54 is RoHS non-compliant. For applications requiring environmental compliance, 15KPA40A is the appropriate choice.

Q: Can these parts be used interchangeably in existing designs?

A: 15KPA40A can be used interchangeably with 15KP40A-TP. 5KP40A-E3/54 requires design review due to reduced power rating and RoHS non-compliance status. Interchangeability is not automatic for the latter.