20KPA80C Equivalent & Substitute Parts

Part Overview

The 20KPA80C is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This through-hole component features an 80V reverse standoff voltage with a 136.5V maximum clamping voltage and 155.4A peak pulse current capability. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

20KPA80C

Littelfuse Inc.In Stock: 117820KPA80C Datasheet

Current PartRFQ

20KPA80CA

MDE Semiconductor IncIn Stock: 208720KPA80CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 20KPA80C is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 80V
• Voltage - Clamping (Max) @ Ipp: Maximum 136.5V (lower values acceptable)
• Current - Peak Pulse (10/1000µs): 155.4A minimum
• Power - Peak Pulse: 20000W (20kW) minimum
• Mounting Type: Through Hole
• Package / Case: P600, Axial
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Bidirectional Channels: 1
• Type: Zener

The substitute part 20KPA80CA meets these criteria while maintaining compatibility with existing PCB layouts and circuit designs. Both components share identical reverse standoff voltage, peak pulse current, power dissipation capability, and thermal operating range. The substitute operates within the same package footprint and mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

The 20KPA80CA is a direct functional equivalent to the obsolete 20KPA80C. Both components maintain identical electrical performance specifications across reverse standoff voltage, peak pulse current, and power dissipation ratings. The substitute part is manufactured by MDE Semiconductor Inc. and carries active product status, ensuring ongoing availability and supply chain continuity.

The 20KPA80CA demonstrates improved clamping voltage performance (130V versus 136.5V), which provides enhanced transient suppression characteristics while remaining within the functional requirements of the 20KPA series. Both parts are ROHS3 compliant and operate across the identical temperature range of -55°C to 175°C.

The identical P600 axial through-hole package ensures direct PCB compatibility without layout modifications. Selection of the 20KPA80CA eliminates obsolescence risk while maintaining full electrical and mechanical interchangeability with the original 20KPA80C design.

Frequently Asked Questions (FAQ)

Q: Can the 20KPA80CA be used as a direct replacement for the 20KPA80C in existing designs?

A: Yes. Both components share identical reverse standoff voltage (80V), peak pulse current (155.4A), power dissipation (20kW), operating temperature range (-55°C to 175°C), and P600 axial through-hole package configuration. No circuit modifications or PCB layout changes are required.

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

A: The 20KPA80C specifies a maximum clamping voltage of 136.5V, while the 20KPA80CA specifies 130V. The lower clamping voltage of the substitute part represents improved transient suppression performance and does not compromise circuit protection.

Q: Why is the 20KPA80C classified as obsolete?

A: The 20KPA80C is no longer manufactured by Littelfuse Inc. The 20KPA80CA, manufactured by MDE Semiconductor Inc., is the active equivalent within the 20KPA series and is currently available for procurement.

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

A: Both the 20KPA80C and 20KPA80CA are ROHS3 compliant. The substitute part carries REACH Unaffected status and Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: What is the package configuration for both parts?

A: Both components use the P600 axial through-hole package, which is a standard configuration for TVS diodes in this voltage and current class. This identical packaging ensures direct mechanical and electrical compatibility on existing PCBs.

Q: Can the 20KPA80CA handle the same transient energy levels as the 20KPA80C?

A: Yes. Both parts are rated for identical peak pulse power of 20000W (20kW) and peak pulse current of 155.4A at the 10/1000µs waveform. Energy handling capability is equivalent across both components.