30KPA66C Equivalent & Substitute Parts

Part Overview

The 30KPA66C is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This component features a 66V reverse standoff voltage with a 112.35V maximum clamping voltage and 283.2A peak pulse current capability. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent performance is required.

Substiute Parts

30KPA66C

Littelfuse Inc.In Stock: 89230KPA66C Datasheet

Current PartRFQ

30KPA66CA

MDE Semiconductor IncIn Stock: 225830KPA66CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 30KPA66C is determined by the following critical parameters:

• Voltage Rating Match: Reverse standoff voltage of 66V and breakdown voltage minimum of 69.65V
• Current Handling: Peak pulse current of 283.2A at 10/1000µs pulse width
• Clamping Performance: Maximum clamping voltage capability at rated peak pulse current
• Package Compatibility: Through-hole P600 axial package format
• Thermal Range: Operating temperature range of -55°C to 175°C (TJ)
• Electrical Type: Zener-type TVS diode with single bidirectional channel

The 30KPA66CA qualifies as a direct substitute based on matching all critical electrical parameters and package specifications, despite minor variations in clamping voltage performance.

Parameter Comparison

Engineering Selection Recommendations

The 30KPA66CA is a qualified substitute for the obsolete 30KPA66C based on the following factors:

Compliance and Certification: Both components maintain ROHS3 compliance and share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications, ensuring regulatory equivalence for procurement and export purposes.

Active Product Status: The 30KPA66CA is currently in active production status, providing supply chain continuity and long-term availability compared to the obsolete 30KPA66C.

Electrical Performance: The substitute maintains identical reverse standoff voltage (66V), peak pulse current (283.2A), and power dissipation (30kW) specifications. The clamping voltage of 107V is lower than the original 112.35V, representing improved performance in transient suppression with a 5V margin reduction.

Package and Thermal Compatibility: Identical through-hole P600 axial packaging and operating temperature range (-55°C to 175°C) ensure direct mechanical and thermal interchangeability without circuit board redesign.

Frequently Asked Questions (FAQ)

Q: Can the 30KPA66CA be used as a direct replacement for the 30KPA66C in existing designs?

A: Yes. Both components share identical reverse standoff voltage (66V), peak pulse current (283.2A), power rating (30kW), package format (P600 axial), and operating temperature range. The lower clamping voltage of the substitute (107V vs. 112.35V) represents improved transient suppression performance.

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

A: The 30KPA66CA exhibits a lower maximum clamping voltage (107V) compared to the 30KPA66C (112.35V). Lower clamping voltage indicates more effective voltage suppression during transient events, providing enhanced circuit protection with a 5V margin improvement.

Q: Are there any compliance or certification differences between these components?

A: No. Both components are ROHS3 compliant and share identical ECCN and HTSUS classifications. The 30KPA66CA includes documented REACH compliance information availability, while the 30KPA66C does not specify this status.

Q: What is the moisture sensitivity level difference?

A: The 30KPA66C does not specify a moisture sensitivity level (MSL). The 30KPA66CA is rated MSL 1 (Unlimited), indicating no moisture-related storage restrictions for the substitute component.

Q: Are the packaging formats identical?

A: Yes. Both components use P600 axial through-hole packaging, enabling direct mechanical interchangeability without printed circuit board modifications.