Equivalent & Substitute Parts for 20KPA96 TVS Diode

Part Overview

The 20KPA96 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 96V reverse standoff voltage with a 162.75V maximum clamping voltage and peak pulse current capability of 130.3A at 20kW peak pulse power. The part is currently classified as obsolete, making identification of suitable equivalent and substitute components essential for ongoing system support and new design implementations.

Substiute Parts

20KPA96

Littelfuse Inc.In Stock: 118920KPA96 Datasheet

Current PartRFQ

20KPA96A

MDE Semiconductor IncIn Stock: 188920KPA96A Datasheet

DirectRFQ

P6KE110A-G

Comchip TechnologyIn Stock: 867P6KE110A-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 20KPA96 is determined by the following critical parameters:

• Voltage - Reverse Standoff: Must be 96V (±tolerance as specified by manufacturer)
• Voltage - Clamping (Max) @ Ipp: Must accommodate the 162.75V maximum clamping specification
• Current - Peak Pulse (10/1000µs): Must support minimum 130.3A capability
• Power - Peak Pulse: Must support 20kW minimum dissipation
• Mounting Type: Through Hole configuration required
• Package / Case: P600 or equivalent axial package
• Type: Zener diode, unidirectional (1 channel)
• Operating Temperature: Must cover -55°C ~ 175°C range or equivalent

The identified substitute parts meet these core electrical and mechanical requirements while maintaining functional compatibility within the specified application envelope.

Parameter Comparison

Engineering Selection Recommendations

20KPA96A (MDE Semiconductor Inc) is the primary direct equivalent. This part maintains identical reverse standoff voltage (96V), peak pulse current (130.3A), and peak pulse power (20kW) specifications. The clamping voltage is reduced to 155V compared to the original 162.75V, representing improved performance within the protection envelope. Both parts share the P600 axial package and identical operating temperature range. The 20KPA96A holds Active product status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and supply chain stability.

P6KE110A-G (Comchip Technology) is listed as a manufacturer-recommended substitute but presents significant electrical differences. While maintaining the 96V reverse standoff voltage and Through Hole mounting configuration, this part operates at substantially reduced current and power levels (3.95A peak pulse current, 600W peak pulse power versus 130.3A and 20kW). The operating temperature maximum is reduced to 150°C. This part is suitable only for applications with lower transient energy requirements and cannot serve as a direct replacement in high-current protection circuits. The P6KE110A-G uses a DO-15 package rather than P600, requiring PCB layout modifications.

For obsolete part replacement, the 20KPA96A is the recommended selection based on electrical parameter alignment and active product status.

Frequently Asked Questions (FAQ)

Q: Can the 20KPA96A directly replace the 20KPA96 in existing designs?

A: Yes. The 20KPA96A maintains identical reverse standoff voltage (96V), peak pulse current (130.3A), and peak pulse power (20kW) specifications. The reduced clamping voltage (155V versus 162.75V) represents improved clamping performance. Both parts use the P600 axial package and support the same operating temperature range (-55°C ~ 175°C). No circuit modifications are required.

Q: What are the key differences between 20KPA96A and P6KE110A-G?

A: The primary differences are current and power handling capabilities. The 20KPA96A supports 130.3A peak pulse current and 20kW peak pulse power, while the P6KE110A-G is rated for only 3.95A and 600W. Additionally, the P6KE110A-G uses a DO-15 package instead of P600, requiring PCB layout changes. The P6KE110A-G maximum operating temperature is 150°C versus 175°C for the 20KPA96A. These differences make the P6KE110A-G unsuitable for high-current transient protection applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both the 20KPA96A and P6KE110A-G are ROHS3 compliant, matching the compliance status of the original 20KPA96.

Q: Does package compatibility affect substitution?

A: The 20KPA96A uses the same P600 axial package as the original 20KPA96, ensuring direct PCB compatibility without layout modifications. The P6KE110A-G uses a DO-15 package, requiring PCB redesign and is not recommended for direct substitution in existing layouts.

Q: What is the significance of the clamping voltage difference in the 20KPA96A?

A: The 20KPA96A clamping voltage of 155V is lower than the original 162.75V, indicating improved transient suppression performance. Lower clamping voltage provides better protection by limiting voltage peaks to a lower threshold, which is advantageous in most protection applications.