Bourns 2028-42-C2LF Gas Discharge Tube - Equivalent & Substitute Parts

Part Overview

The Bourns 2028-42-C2LF is a 3-pole gas discharge tube (GDT) rated for 420V DC spark-over voltage with 20kA impulse discharge current capacity. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The 2028 series has been superseded by the TRIGARD® 2026 series, which maintains identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

2028-42-C2LF

Bourns Inc.In Stock: 10032028-42-C2LF Datasheet

Current PartRFQ

2026-42-C2LF

Bourns Inc.In Stock: 11592026-42-C2LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2028-42-C2LF is determined by strict equivalence across the following parameters:

• Voltage - DC Spark Over (Nominal): 420 V
• Impulse Discharge Current (8/20µs): 20000A (20kA)
• Tolerance: ±20%
• Number of Poles: 3
• Fail Short characteristic: No
• Mounting Type: Through Hole
• Package / Case: Axial Cylinder, 3 Lead (Radial Bend)
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The Bourns 2026-42-C2LF meets all substitution criteria as a direct equivalent. Both parts share identical electrical ratings, mechanical form factors, and compliance certifications. The primary distinction is product lifecycle status: the 2028 series is obsolete, while the 2026 series (TRIGARD®) is active.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 2026-42-C2LF is the direct substitute for the obsolete 2028-42-C2LF. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The 2026 series maintains full electrical and mechanical compatibility while offering active product status, ensuring long-term availability and supply chain continuity. Selection of the 2026-42-C2LF eliminates obsolescence risk without requiring circuit redesign or performance compromise.

Frequently Asked Questions (FAQ)

Q: Can the 2026-42-C2LF be used as a direct replacement for the 2028-42-C2LF?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 420V DC spark-over voltage, 20kA impulse discharge current, 3-pole configuration, through-hole mounting, and identical package geometry. No circuit modifications are required.

Q: What is the primary reason for substitution?

A: The 2028-42-C2LF is classified as obsolete. The 2026-42-C2LF is the active equivalent from Bourns, providing identical performance with assured long-term availability.

Q: Are there any compliance differences between these parts?

A: No. Both parts carry identical certifications: ROHS3 compliant and REACH unaffected. Regulatory requirements are met by either component.

Q: Is the package form factor identical?

A: Yes. Both parts use the same Axial Cylinder, 3 Lead (Radial Bend) package with through-hole mounting, ensuring mechanical and electrical compatibility in existing PCB layouts.

Q: What is the tolerance specification for both parts?

A: Both the 2028-42-C2LF and 2026-42-C2LF carry a ±20% tolerance on the 420V DC spark-over voltage rating.