Bourns 2028-35-CLF Gas Discharge Tube Equivalent & Substitute Parts

Part Overview

The Bourns 2028-35-CLF is a 3-pole gas discharge tube (GDT) rated for 350V DC spark-over voltage with 20kA impulse discharge current capacity. This component is designed for overvoltage protection in telecommunications and industrial applications. The 2028-35-CLF is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new design implementations.

Substiute Parts

2028-35-CLF

Bourns Inc.In Stock: 9882028-35-CLF Datasheet

Current PartRFQ

2026-35-CLF

Bourns Inc.In Stock: 11682026-35-CLF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2028-35-CLF is determined by electrical and mechanical parameter matching across the following criteria:

• Voltage - DC Spark Over (Nominal): 350 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 (T-Shape)
• RoHS Status: ROHS3 Compliant

The Bourns 2026-35-CLF meets all specified electrical and mechanical parameters, providing direct functional equivalence. The primary distinction is product status: the 2028 series is obsolete while the 2026 series (TRIGARD® 2026) remains active.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 2026-35-CLF is the direct equivalent for the obsolete 2028-35-CLF. Both components share identical electrical specifications (350V spark-over, 20kA impulse current) and mechanical form factors (3-pole through-hole axial cylinder package). The 2026-35-CLF maintains full compliance with ROHS3, REACH, and EAR99 classifications, ensuring regulatory continuity.

Selection of the 2026-35-CLF is appropriate for replacement applications, redesigns, and new implementations requiring 350V/20kA 3-pole GDT protection. The active product status of the 2026 series ensures long-term availability and supply chain stability compared to the obsolete 2028 series.

Frequently Asked Questions (FAQ)

Q: Can the 2026-35-CLF directly replace the 2028-35-CLF in existing designs?

A: Yes. Both components share identical electrical parameters (350V DC spark-over, 20kA impulse discharge current, ±20% tolerance) and mechanical specifications (3-pole through-hole axial cylinder package). Direct pin-for-pin substitution is supported.

Q: What is the primary reason for substitution?

A: The 2028-35-CLF is classified as obsolete. The 2026-35-CLF provides equivalent functionality with active product status, ensuring continued availability and supply chain support.

Q: Are there any compliance differences between the two parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, and classified as EAR99. Regulatory and environmental compliance is identical.

Q: Does the packaging differ between these parts?

A: The electrical and mechanical packaging specifications are identical. The 2028-35-CLF is listed as through-hole with axial cylinder form factor, as is the 2026-35-CLF. Both use the same 3-lead T-shape configuration.

Q: Are there inventory considerations for this substitution?

A: The 2026-35-CLF is actively manufactured and stocked. The 2028-35-CLF, being obsolete, has limited remaining inventory. For new procurements and long-term applications, the 2026-35-CLF is the recommended selection.