3KP30A-TP Transient Voltage Suppressor Diode - Equivalent & Substitute Parts

Part Overview

The 3KP30A-TP is a unidirectional transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection applications. This through-hole component features a 30V reverse standoff voltage with a 48.4V maximum clamping voltage and 3kW peak pulse power rating. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining compatibility with through-hole axial mounting configurations.

Substiute Parts

3KP30A-TP

Micro Commercial CoIn Stock: 11483KP30A-TP Datasheet

Current PartRFQ

15KPA30A

Good-Ark SemiconductorIn Stock: 295615KPA30A Datasheet

SimilarRFQ

30KPA30A

MDE Semiconductor IncIn Stock: 127030KPA30A Datasheet

SimilarRFQ

5KP30A

Diotec SemiconductorIn Stock: 44475KP30A Datasheet

SimilarRFQ

5KP30A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 81635KP30A-E3/54 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): Must equal 30V
• Voltage - Breakdown (Min): Must equal or exceed 33.3V
• Type: Must be Zener unidirectional TVS diode
• Unidirectional Channels: Must equal 1
• Mounting Type: Must be Through Hole
• Applications: Must support General Purpose use
• RoHS Status: Must maintain ROHS3 Compliant certification

The identified substitute parts meet these core electrical and mechanical criteria. Variations in clamping voltage, peak pulse current, and power dissipation ratings reflect different device geometries and thermal capabilities within the same functional class.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance, meeting regulatory requirements for new designs. Selection between the main part and substitutes depends on application-specific power dissipation requirements:

3KP30A-TP and 5KP30A-E3/54 / 5KP30A: These parts share identical voltage characteristics (30V standoff, 33.3V breakdown, 48.4V clamping) and 5kW power rating. The 5KP30A-E3/54 from Vishay carries the TransZorb® series designation and maintains full temperature range (-55°C to 175°C). The 5KP30A from Diotec provides equivalent performance with slightly reduced minimum operating temperature (-50°C).

15KPA30A: This Good-Ark Semiconductor device provides 15kW peak pulse power with marginally higher clamping voltage (50.7V) and peak pulse current (297.8A). Operating temperature range is limited to -55°C to 150°C.

30KPA30A: The MDE Semiconductor part offers maximum power dissipation at 30kW with the highest clamping voltage (55.2V) and peak pulse current (548.9A). Full temperature range (-55°C to 175°C) is maintained.

Frequently Asked Questions (FAQ)

Q: Can I use a higher power-rated TVS diode as a direct substitute?

A: Yes, provided the voltage parameters (reverse standoff, breakdown, and clamping voltages) remain within specification. Higher power ratings indicate larger die geometry and improved thermal performance, making them suitable for applications with greater transient energy.

Q: What is the significance of the package designation change from R-6 to P600?

A: Both R-6 and P600 are through-hole axial packages. The P600 designation indicates a larger package geometry, typically associated with higher power dissipation capability. Physical dimensions differ, requiring PCB layout verification before substitution.

Q: Are all substitute parts suitable for the same circuit application?

A: Electrical substitution is valid when voltage parameters match. However, physical package differences (R-6 versus P600) require PCB footprint compatibility verification. Higher power-rated devices may occupy different board space.

Q: What does the clamping voltage variation mean for circuit protection?

A: Clamping voltage determines the maximum voltage presented to protected circuitry during a transient event. The 3KP30A-TP clamps at 48.4V. Substitutes with higher clamping voltages (50.7V or 55.2V) provide slightly less aggressive voltage suppression but maintain protection within the 30V standoff specification.

Q: Is temperature range a critical selection factor?

A: Temperature range becomes critical in applications with extreme ambient conditions or high-frequency switching environments. The 3KP30A-TP and 30KPA30A support -55°C to 175°C operation. The 15KPA30A is limited to -55°C to 150°C, which may be insufficient for high-temperature applications.

Q: Can I substitute based on power rating alone?

A: No. Voltage parameters (standoff, breakdown, and clamping) must match first. Power rating is a secondary consideration reflecting thermal capability. Mismatched voltage specifications will result in inadequate or excessive protection.