30KP45A-TP Equivalent & Substitute Parts

Part Overview

The 30KP45A-TP is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient voltage protection in through-hole applications. This component features a 45V reverse standoff voltage with a 77.4V maximum clamping voltage and 30kW peak pulse power rating. The part is ROHS3 compliant and currently active in production with 769 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges.

Substiute Parts

30KP45A-TP

Micro Commercial CoIn Stock: 85430KP45A-TP Datasheet

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15KPA45A

MDE Semiconductor IncIn Stock: 213015KPA45A Datasheet

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5KP45A

Littelfuse Inc.In Stock: 30585KP45A Datasheet

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5KP45A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 14105KP45A-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 30KP45A-TP are qualified based on the following critical parameters:

• Voltage - Reverse Standoff (Typ): 45V
• Voltage - Breakdown (Min): 50V or higher
• Voltage - Clamping (Max) @ Ipp: 72.7V to 77.4V range
• Operating Temperature Range: -55°C to 175°C (TJ)
• Mounting Type: Through Hole
• Type: Zener, Unidirectional
• RoHS Status: ROHS3 Compliant

The 30KP45A-TP operates at 30kW peak pulse power. Substitute parts with lower power ratings (5kW and 15kW) maintain the same voltage protection characteristics and thermal operating range, making them functionally equivalent for applications where the full 30kW capacity is not required. All substitute parts maintain identical reverse standoff voltage, comparable breakdown voltage, and compatible clamping voltage performance within engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance, ensuring regulatory alignment with the original 30KP45A-TP. The 15KPA45A provides the closest power rating match at 15kW while maintaining identical reverse standoff voltage and comparable clamping voltage performance. The 5KP45A and 5KP45A-E3/54 are suitable for applications requiring lower transient energy dissipation, with both offering identical voltage protection characteristics and thermal operating ranges. Selection between substitute parts should be based on application-specific peak pulse power requirements and available inventory.

Frequently Asked Questions (FAQ)

Q: Can the 5KP45A substitute for the 30KP45A-TP in all applications?

A: The 5KP45A maintains identical reverse standoff voltage (45V) and comparable clamping voltage (72.7V vs. 77.4V). Substitution is valid only for applications where peak pulse power does not exceed 5kW. Applications requiring the full 30kW capacity require the original part or the 15KPA45A intermediate option.

Q: What is the difference between the R-6 and P600 package formats?

A: Both are axial through-hole packages suitable for PCB mounting. The R-6 package is specific to the 30KP45A-TP, while P600 is used by the substitute parts. Physical dimensions and lead spacing may differ; verify PCB footprint compatibility before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 30KP45A-TP, 15KPA45A, 5KP45A, and 5KP45A-E3/54 are all ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the significance of the clamping voltage difference between the main part and substitutes?

A: The 30KP45A-TP clamps at 77.4V maximum, while substitutes clamp at 72.7V to 72.8V. This 4.6V to 4.7V difference remains within acceptable engineering tolerance for general-purpose transient voltage suppression. Both ranges protect circuits designed for 45V standoff voltage operation.

Q: Can the 15KPA45A be used as a direct replacement for the 30KP45A-TP?

A: The 15KPA45A is functionally equivalent for voltage protection characteristics but provides half the peak pulse power rating (15kW vs. 30kW). Substitution is appropriate for applications where transient energy levels do not exceed 15kW.

Q: What inventory considerations apply to these substitute parts?

A: The 30KP45A-TP has 769 units in stock. The 15KPA45A has 2080 units, the 5KP45A has 3006 units, and the 5KP45A-E3/54 has 1400 units available. Higher inventory levels for substitute parts may support supply chain continuity.