Equivalent & Substitute Parts: N0795YN180

Part Overview

The N0795YN180 is a high-current silicon-controlled rectifier (SCR) manufactured by IXYS, rated for 1.8 kV off-state voltage with a maximum RMS on-state current of 1580 A. This component is designed for standard recovery applications in chassis mount configurations using the TO-200AB, B-PuK package. The N0795YN180 is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and field replacement applications.

Substiute Parts

N0795YN180

IXYSIn Stock: 5404N0795YN180 Datasheet

Current PartRFQ

N0676YC180

IXYSIn Stock: 888N0676YC180 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the N0795YN180 is based on the following critical electrical and mechanical parameters:

Voltage Class Matching: Both the main part and substitute must operate at 1.8 kV off-state voltage to ensure compatibility within the same circuit topology and protection scheme.

SCR Type Consistency: Both components must be classified as Standard Recovery SCRs to maintain equivalent switching characteristics and recovery time performance.

Mounting Configuration: Both parts must use Chassis Mount configuration to ensure mechanical compatibility with existing thermal management and mechanical assembly designs.

Package Family Compatibility: The substitute part must belong to the TO-200 package family (TO-200AA, A-PUK) to ensure compatibility with existing PCB layouts and mounting hardware, though specific variant designations may differ.

Manufacturer Continuity: IXYS manufacture of both the main part and substitute ensures consistent quality standards, process control, and technical support.

The N0676YC180 meets all substitution criteria as an active, ROHS3-compliant alternative to the obsolete N0795YN180.

Parameter Comparison

Engineering Selection Recommendations

The N0676YC180 is the manufacturer-recommended substitute for the obsolete N0795YN180. Both components share identical off-state voltage ratings (1.8 kV) and SCR type classification (Standard Recovery), establishing functional equivalence for circuit topology and protection requirements.

The N0676YC180 is classified as Active product status, ensuring ongoing manufacturing support, technical documentation availability, and supply chain continuity. The N0795YN180, designated as Obsolete, presents supply risk and potential long-term unavailability.

Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for new production applications.

The N0676YC180 demonstrates improved on-state voltage performance (1.09 V maximum versus 2 V maximum), resulting in reduced conduction losses and improved thermal efficiency in high-current applications. However, the substitute part exhibits lower current ratings in both average (676 A versus 795 A) and surge (7500 A versus 10500 A) categories. Circuit design verification is required to confirm that the N0676YC180 current specifications satisfy application requirements.

Both components use TO-200 package family configurations with chassis mount design, supporting mechanical and thermal compatibility with existing assembly designs.

Frequently Asked Questions (FAQ)

Q: Can the N0676YC180 directly replace the N0795YN180 in existing designs?

A: The N0676YC180 is electrically equivalent in voltage class (1.8 kV) and SCR type (Standard Recovery), supporting direct substitution from a circuit topology perspective. However, the substitute part has lower current ratings (676 A average versus 795 A average, and 7500 A surge versus 10500 A surge). Circuit analysis must confirm that application current requirements do not exceed the N0676YC180 specifications.

Q: What are the package compatibility considerations?

A: The N0795YN180 uses TO-200AB, B-PuK packaging, while the N0676YC180 uses TO-200AA, A-PUK packaging. Both belong to the TO-200 family with chassis mount configuration. Mechanical compatibility depends on specific PCB layout, mounting hardware, and thermal interface design. Verify that existing mounting fixtures and thermal management solutions accommodate the substitute package variant.

Q: Why is the N0795YN180 classified as obsolete?

A: The N0795YN180 is no longer in active production. The N0676YC180 represents the active equivalent component from IXYS, ensuring continued availability and technical support for new designs and field replacements.

Q: Are there compliance differences between the two parts?

A: Both the N0795YN180 and N0676YC180 are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution in regulated applications.

Q: What is the significance of the lower on-state voltage in the N0676YC180?

A: The N0676YC180 maximum on-state voltage of 1.09 V is lower than the N0795YN180 specification of 2 V. This represents improved performance, reducing conduction losses and heat generation during operation. This characteristic is advantageous for thermal management in high-current applications.

Q: How do the current ratings affect substitution decisions?

A: The N0676YC180 has lower maximum current specifications than the N0795YN180 across all categories (average on-state current, RMS current, and non-repetitive surge current). Applications operating near the upper current limits of the N0795YN180 may exceed the N0676YC180 ratings. Detailed circuit analysis is required to confirm compatibility with specific application current profiles.