Bourns 2028-42-CLF Gas Discharge Tube Equivalent & Substitute Parts

Part Overview

The Bourns 2028-42-CLF is a 3-pole gas discharge tube (GDT) rated for 420V DC spark-over voltage with 20kA impulse discharge current capacity. This component is designed for through-hole mounting in surge protection and overvoltage suppression applications. The 2028-42-CLF is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

2028-42-CLF

Bourns Inc.In Stock: 9162028-42-CLF Datasheet

Current PartRFQ

2026-42-CLF

Bourns Inc.In Stock: 10412026-42-CLF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns 2026-42-CLF qualifies as a direct substitute for the 2028-42-CLF based on matching electrical and mechanical specifications. Substitution eligibility is determined by the following criteria:

• Voltage - DC Spark Over (Nominal): 420 V (identical)
• Impulse Discharge Current (8/20µs): 20000A (20kA) (identical)
• Tolerance: ±20% (identical)
• Number of Poles: 3 (identical)
• Fail Short characteristic: No (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: Axial Cylinder, 3 Lead (T-Shape) (identical)

The 2026-42-CLF is part of the TRIGARD® 2026 series and maintains active product status, providing long-term availability and support compared to the obsolete 2028 series.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 2026-42-CLF is the appropriate selection for applications currently specified with the 2028-42-CLF. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The 2026-42-CLF offers the advantage of active product status, ensuring continued availability, technical support, and manufacturing consistency. All electrical performance parameters, mechanical dimensions, and mounting characteristics are identical between the two parts, enabling direct substitution without circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can the 2026-42-CLF be used as a direct replacement for the 2028-42-CLF?

A: Yes. Both components share identical electrical ratings (420V DC spark-over, 20kA impulse discharge current), mechanical packaging (axial cylinder, 3-lead T-shape), and mounting method (through-hole). No circuit modifications are required.

Q: What is the primary advantage of switching to the 2026-42-CLF?

A: The 2026-42-CLF maintains active product status, whereas the 2028-42-CLF is obsolete. Active status ensures long-term availability, consistent manufacturing, and ongoing technical support from Bourns Inc.

Q: Are there any compliance differences between these parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, and classified under the same ECCN (EAR99) and HTSUS (8536.30.8000) codes.

Q: Will the 2026-42-CLF fit existing PCB layouts designed for the 2028-42-CLF?

A: Yes. The package type (Axial Cylinder, 3 Lead T-Shape) and through-hole mounting configuration are identical, allowing direct board-level substitution without layout changes.

Q: Are the electrical performance characteristics identical?

A: Yes. Voltage rating (420V nominal), impulse discharge current (20kA at 8/20µs), tolerance (±20%), pole count (3), and fail-short characteristic (No) are identical across both components.