30KP33A-TP Equivalent & Substitute Parts

Part Overview

The 30KP33A-TP is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient protection applications. This through-hole component operates across a temperature range of -55°C to 175°C and is ROHS3 compliant. The part is currently active in production with 808 units in stock. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility to support procurement flexibility and supply chain continuity.

Substiute Parts

30KP33A-TP

Micro Commercial CoIn Stock: 88430KP33A-TP Datasheet

Current PartRFQ

30KPA33A

MDE Semiconductor IncIn Stock: 203830KPA33A Datasheet

DirectRFQ

5KP33A

Diotec SemiconductorIn Stock: 43285KP33A Datasheet

SimilarRFQ

5KP33A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 28815KP33A-E3/54 Datasheet

SimilarRFQ

5KP33AHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 21005KP33AHE3/54 Datasheet

SimilarRFQ

BZW50-33

STMicroelectronicsIn Stock: 1510BZW50-33 Datasheet

SimilarRFQ

BZW50-33RL

STMicroelectronicsIn Stock: 2825BZW50-33RL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 30KP33A-TP are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent (Same Power Rating):

• 30KPA33A (MDE Semiconductor Inc): Maintains identical voltage specifications (33V reverse standoff, 36.9V breakdown minimum, 58.5V clamping maximum) and 30kW peak pulse power rating. Package variant P600 (axial) differs from R-6 but maintains through-hole mounting compatibility.

Similar Substitutes (Reduced Power Rating):

• 5KP33A, 5KP33A-E3/54, 5KP33AHE3/54 (Diotec Semiconductor, Vishay General Semiconductor): Maintain 33V reverse standoff and 36.7V breakdown minimum specifications. Clamping voltage ranges from 53.3V to 53.3V. Power rating reduced to 5kW. Package P600 (axial) maintains through-hole mounting.
• BZW50-33, BZW50-33RL (STMicroelectronics): Maintain 33V reverse standoff and 36.6V breakdown minimum. Clamping voltage 76V (higher than main part). Power rating 5kW. Package R-6 (axial) matches main part packaging.

Substitution eligibility is determined by: (1) matching reverse standoff voltage of 33V, (2) breakdown voltage within 36.6V–36.9V range, (3) through-hole axial mounting configuration, and (4) operating temperature range compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Power Dissipation Requirements): The 30KPA33A from MDE Semiconductor Inc is the primary direct equivalent, maintaining identical voltage specifications and 30kW peak pulse power rating. Both parts are ROHS3 compliant and active in production. Package transition from R-6 to P600 requires PCB layout verification but does not affect electrical performance. This option is suitable when 30kW transient protection capacity is mandatory.

For Reduced Power Applications: The 5KP33A-E3/54 and 5KP33AHE3/54 from Vishay General Semiconductor are suitable substitutes for applications requiring 5kW peak pulse protection. Both maintain ROHS3 compliance and the full -55°C to 175°C operating temperature range. The 5KP33AHE3/54 carries AEC-Q101 automotive qualification, making it appropriate for automotive-grade applications. Clamping voltage is reduced to 53.3V compared to the main part's 58.5V.

For Package Compatibility: The BZW50-33 and BZW50-33RL from STMicroelectronics maintain the R-6 axial package of the main part, eliminating PCB layout changes. Both are ROHS3 compliant and rated for 5kW peak pulse power. Clamping voltage is elevated to 76V. These options are preferred when package footprint preservation is critical.

Compliance Considerations: All listed substitutes maintain ROHS3 compliance and active product status. The 5KP33A from Diotec Semiconductor carries "Not applicable" RoHS status and should be avoided in applications requiring explicit ROHS3 certification.

Frequently Asked Questions (FAQ)

Q: Can the 30KPA33A replace the 30KP33A-TP in all applications? A: Yes, the 30KPA33A is a direct electrical equivalent with identical voltage and power specifications. The package change from R-6 to P600 requires PCB layout verification to confirm lead spacing and hole diameter compatibility, but electrical performance is unchanged.

Q: What is the difference between the 5KP series and the main 30KP33A-TP part? A: The 5KP series substitutes operate at reduced peak pulse power (5kW versus 30kW). They maintain the same 33V reverse standoff voltage and similar breakdown characteristics. Selection depends on whether your application requires the full 30kW transient protection capacity or if 5kW is sufficient.

Q: Why does the BZW50-33 have a higher clamping voltage (76V) than the main part (58.5V)? A: The BZW50-33 is from a different manufacturer series (STMicroelectronics TRANSIL™) with different internal design characteristics. The higher clamping voltage may provide additional margin in some applications but requires circuit analysis to confirm compatibility with downstream components.

Q: Are the Vishay 5KP33A-E3/54 and 5KP33AHE3/54 interchangeable? A: Both parts are electrically identical with matching voltage and power specifications. The 5KP33AHE3/54 carries AEC-Q101 automotive qualification, making it the preferred choice for automotive applications. In non-automotive contexts, either part is acceptable.

Q: What is the impact of the -50°C lower temperature limit on the Diotec 5KP33A? A: The Diotec 5KP33A operates from -50°C to 175°C, compared to -55°C to 175°C for most alternatives. If your application requires operation below -50°C, this part is not suitable. For applications within -50°C to 175°C, this limitation does not apply.

Q: Can I use a 5kW-rated substitute in a 30kW application? A: No. The 5kW-rated parts (5KP series and BZW50 series) are designed for lower transient energy levels. Using them in 30kW applications will result in component failure. The 30KPA33A is the only substitute maintaining 30kW capacity.

Q: Does package type affect electrical performance? A: No. The R-6 and P600 packages are both axial through-hole configurations with identical electrical properties. Package selection is driven by PCB layout constraints and lead spacing requirements, not electrical performance.