30KPA36C Equivalent & Substitute Parts

Part Overview

The 30KPA36C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 36V reverse standoff voltage with a 64.89V maximum clamping voltage and peak pulse current handling of 490.3A at 30kW peak pulse power. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this specific part number is no longer available from the original manufacturer.

Substiute Parts

30KPA36C

Littelfuse Inc.In Stock: 91030KPA36C Datasheet

Current PartRFQ

30KPA36CA

Good-Ark SemiconductorIn Stock: 173530KPA36CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 30KPA36C is determined by strict equivalence across the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute part must maintain the same 36V reverse standoff voltage specification to ensure proper circuit protection thresholds.

Current Handling Capacity: Peak pulse current of 490.3A at the 10/1000µs waveform is a mandatory requirement for equivalent protection performance.

Power Dissipation: 30kW peak pulse power rating must be matched to ensure the component can safely absorb transient energy without thermal failure.

Clamping Voltage Performance: The maximum clamping voltage must remain within acceptable limits to prevent downstream component damage during transient events.

Package and Mounting: P600 axial through-hole package is required for mechanical and electrical compatibility with existing PCB designs.

Bidirectional Operation: Single-channel bidirectional capability must be maintained for symmetric overvoltage protection.

Parameter Comparison

Engineering Selection Recommendations

The 30KPA36CA from Good-Ark Semiconductor is a direct functional equivalent to the obsolete 30KPA36C. Both components share identical reverse standoff voltage, peak pulse current, and peak pulse power ratings. The substitute part maintains ROHS3 compliance and is currently in active production status with confirmed inventory availability.

The 30KPA36CA exhibits a lower maximum clamping voltage (61.8V versus 64.89V), which represents improved clamping performance and provides enhanced protection margins for downstream circuitry. The breakdown voltage minimum specification of 40.2V is within acceptable tolerance relative to the original 37.99V specification for general-purpose TVS applications.

The operating temperature range of the substitute part extends to 150°C maximum junction temperature, compared to 175°C for the original component. This difference is acceptable for applications operating within standard industrial temperature ranges and does not impact performance in typical circuit protection scenarios.

Both parts are packaged in P600 axial through-hole format, ensuring direct mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 30KPA36CA be used as a direct replacement for the 30KPA36C in existing designs?

A: Yes. Both components share identical reverse standoff voltage (36V), peak pulse current (490.3A), and peak pulse power (30kW) specifications. The P600 axial through-hole package ensures mechanical compatibility. The substitute part's lower clamping voltage provides equivalent or improved protection performance.

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

A: The 30KPA36CA clamps at 61.8V maximum compared to 64.89V for the 30KPA36C. Lower clamping voltage indicates faster response to transient events and tighter voltage regulation, which benefits downstream component protection without compromising circuit functionality.

Q: Are there any temperature-related limitations when substituting the 30KPA36CA?

A: The 30KPA36CA operates to 150°C junction temperature versus 175°C for the original part. For applications requiring sustained operation above 150°C, thermal analysis of the specific circuit is necessary. For standard industrial and commercial applications, this temperature range is sufficient.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the 30KPA36C and 30KPA36CA are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications, ensuring equivalent regulatory status for procurement and export purposes.

Q: What packaging format is used for the 30KPA36CA?

A: The 30KPA36CA is supplied in Cut Tape (CT) packaging in the P600 axial through-hole format, identical to the original component's package specification. This ensures compatibility with standard PCB assembly processes and manual insertion applications.