30KP78CA-TP Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 30KP78CA-TP is an active-status Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient voltage protection in through-hole applications. This bidirectional zener TVS diode operates with a 78V reverse standoff voltage and provides 30kW peak pulse power dissipation capability. The part is packaged in R-6 axial configuration with tape and reel delivery. Finding equivalent or substitute parts may be necessary due to inventory constraints, lead time requirements, or application-specific packaging preferences while maintaining electrical and mechanical compatibility.

Substiute Parts

30KP78CA-TP

Micro Commercial CoIn Stock: 96030KP78CA-TP Datasheet

Current PartRFQ

15KPA78CA

MDE Semiconductor IncIn Stock: 188515KPA78CA Datasheet

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30KPA78CA

MDE Semiconductor IncIn Stock: 160730KPA78CA Datasheet

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5KP78CA

Littelfuse Inc.In Stock: 33025KP78CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 30KP78CA-TP are qualified based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 78V (exact match required)
• Voltage - Breakdown (Min): 87.1V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 126V to 129V (within acceptable range)
• Type: Zener (bidirectional, single channel)
• Bidirectional Channels: 1
• Operating Temperature: -55°C ~ 175°C (TJ)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole (required)
• Package / Case: Axial configuration (R-6 or P600 acceptable)
• Applications: General Purpose

Regulatory & Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Product Status: Active

The three substitute parts listed below meet all electrical parameters within specified tolerances and maintain through-hole axial mounting compatibility. Packaging format differences (R-6 versus P600) and delivery method variations (Tape & Reel versus Bulk) do not affect electrical or mechanical substitution viability.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Preferred for 30kW Applications): The 30KPA78CA from MDE Semiconductor Inc is the closest electrical equivalent to the 30KP78CA-TP. Both parts maintain identical 78V reverse standoff voltage, 87.1V minimum breakdown voltage, 129V clamping voltage, and 30kW peak pulse power rating. The primary difference is packaging format (P600 axial versus R-6 axial) and delivery method (Bulk versus Tape & Reel). Both are ROHS3 compliant and active-status products. This substitute is suitable for applications requiring the full 30kW power dissipation capability.

Alternative Substitutes (Lower Power Applications): The 15KPA78CA and 5KP78CA are qualified substitutes when application requirements permit reduced peak pulse power dissipation. The 15KPA78CA provides 15kW capability with identical voltage parameters, while the 5KP78CA provides 5kW capability. Both maintain the 78V reverse standoff voltage and through-hole axial mounting configuration. These alternatives are appropriate only when circuit design specifications allow for lower transient energy absorption.

All substitute parts are active-status products with ROHS3 compliance and identical operating temperature ranges (-55°C to 175°C junction temperature).

Frequently Asked Questions (FAQ)

Q: Can the 30KPA78CA replace the 30KP78CA-TP in my circuit? A: Yes. Both parts share identical electrical specifications: 78V reverse standoff voltage, 87.1V minimum breakdown voltage, 129V clamping voltage, and 30kW peak pulse power rating. The package format differs (P600 versus R-6 axial), but both are through-hole axial configurations suitable for PCB mounting. Verify your PCB footprint accommodates the P600 package dimensions if substituting.

Q: What is the difference between the 30KP78CA-TP and 15KPA78CA? A: The primary difference is peak pulse power rating: 30kW versus 15kW. Both maintain identical 78V reverse standoff voltage and 129V clamping voltage. The 15KPA78CA is suitable only for applications where transient energy absorption does not exceed 15kW. Voltage protection characteristics are equivalent.

Q: Can I use the 5KP78CA as a substitute for the 30KP78CA-TP? A: The 5KP78CA is electrically compatible for voltage protection (78V reverse standoff, 126V clamping voltage) but provides only 5kW peak pulse power dissipation. Use this substitute only if your application circuit design permits reduced transient energy absorption. Exceeding 5kW peak pulse conditions may cause device failure.

Q: Are all substitute parts ROHS3 compliant? A: Yes. The 30KPA78CA, 15KPA78CA, and 5KP78CA are all ROHS3 compliant, matching the compliance status of the 30KP78CA-TP.

Q: What is the difference between R-6 and P600 package formats? A: Both are through-hole axial packages for TVS diodes. R-6 and P600 refer to different package outline specifications. Verify your PCB footprint and lead spacing accommodate the substitute package before implementation. Consult manufacturer datasheets for precise dimensional specifications.

Q: Are all substitute parts available in active product status? A: Yes. The 30KPA78CA, 15KPA78CA, and 5KP78CA are all active-status products, ensuring ongoing availability and manufacturer support.