30KPA72 Equivalent & Substitute Parts

Part Overview

The 30KPA72 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 72V reverse standoff voltage rating and provides peak pulse current handling of 265.8A with a maximum clamping voltage of 119.7V at peak pulse current. The part is packaged in a P600 axial through-hole configuration and operates across a temperature range of -55°C to 175°C.

The 30KPA72 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this TVS diode specification.

Substiute Parts

30KPA72

Littelfuse Inc.In Stock: 99130KPA72 Datasheet

Current PartRFQ

30KPA72A

MDE Semiconductor IncIn Stock: 225130KPA72A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 30KPA72 is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 72V
• Voltage - Clamping (Max) @ Ipp: Must remain within acceptable operating margins
• Current - Peak Pulse (10/1000µs): 265.8A
• Power - Peak Pulse: 30000W (30kW)
• Mounting Type: Through Hole
• Package / Case: P600, Axial
• Operating Temperature Range: -55°C to 175°C (TJ)
• Unidirectional Channels: 1

The 30KPA72A qualifies as a direct substitute based on matching reverse standoff voltage (72V), identical peak pulse current rating (265.8A), identical power dissipation capability (30kW), compatible package configuration (P600 axial through-hole), and overlapping operating temperature range. The clamping voltage differential (119.7V vs. 114V) remains within acceptable design tolerances for general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

The 30KPA72A is an active product manufactured by MDE Semiconductor Inc. and represents the primary substitute for the obsolete 30KPA72. Both components maintain ROHS3 compliance and identical regulatory classification (ECCN: EAR99, HTSUS: 8541.10.0080).

The 30KPA72A demonstrates superior supply chain availability (2146 pcs in stock versus 933 pcs for the original part) and active product status, ensuring long-term procurement viability. The electrical parameter alignment—particularly matching reverse standoff voltage, peak pulse current, and power dissipation—supports direct functional equivalence in existing circuit designs.

The clamping voltage specification of the 30KPA72A (114V) is lower than the original part (119.7V), resulting in improved transient suppression performance. This characteristic is favorable for protective applications and does not introduce compatibility concerns for general-purpose transient voltage suppression.

Frequently Asked Questions (FAQ)

Q: Can the 30KPA72A be used as a direct replacement for the 30KPA72 in existing designs?

A: Yes. Both components share identical reverse standoff voltage (72V), peak pulse current (265.8A), power dissipation (30kW), package configuration (P600 axial through-hole), and operating temperature range (-55°C to 175°C). The 30KPA72A is electrically and mechanically compatible for direct substitution.

Q: What is the significance of the clamping voltage difference between the two parts?

A: The 30KPA72A exhibits a lower maximum clamping voltage (114V) compared to the 30KPA72 (119.7V). This represents improved transient suppression performance, as the component clamps voltage transients to a lower level, providing enhanced protection margins in the circuit.

Q: Why is the 30KPA72 classified as obsolete?

A: The 30KPA72 is no longer in active production. The 30KPA72A serves as the active replacement, offering equivalent electrical performance with improved supply chain availability and long-term procurement support.

Q: Are there any compliance or certification differences between the two parts?

A: Both the 30KPA72 and 30KPA72A maintain ROHS3 compliance and identical regulatory classifications. No compliance barriers exist for substitution.

Q: What packaging format is used for both components?

A: Both the 30KPA72 and 30KPA72A utilize P600 axial through-hole packaging, ensuring mechanical compatibility in existing PCB layouts and assembly processes.