Bourns 2026-09-ALF Gas Discharge Tube Equivalent & Substitute Parts

Part Overview

The Bourns 2026-09-ALF is a 3-pole gas discharge tube (GDT) rated for 90V DC spark-over voltage with 20kA impulse discharge current capacity. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and component procurement.

Gas discharge tubes in the TRIGARD® 2026 series provide transient overvoltage protection through fail-short operation, suitable for applications requiring multi-pole surge suppression in user-defined mounting configurations.

Substiute Parts

2026-09-ALF

Bourns Inc.In Stock: 9552026-09-ALF Datasheet

Current PartRFQ

2026-09-A1FLF

Bourns Inc.In Stock: 7092026-09-A1FLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2026-09-ALF is determined by the following critical parameters:

• Voltage rating: 90V DC spark-over (nominal)
• Discharge current capacity: 20kA (8/20µs impulse)
• Pole configuration: 3-pole
• Fail-short characteristic
• Series compatibility: TRIGARD® 2026 base product family
• Regulatory compliance: ROHS3 and REACH status

The identified substitute part maintains electrical equivalence across all specified parameters while differing in product status (active vs. obsolete) and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The 2026-09-A1FLF serves as the active-status equivalent to the obsolete 2026-09-ALF. Both components maintain identical electrical specifications: 90V spark-over voltage, 20kA discharge current, 3-pole configuration, and fail-short operation.

The primary distinction is packaging: the substitute features a 1-lead cylinder configuration versus the no-lead design of the main part. This packaging difference requires mechanical compatibility assessment within the target application's mounting structure.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying current regulatory requirements for component procurement and deployment.

Frequently Asked Questions (FAQ)

Q: Can the 2026-09-A1FLF directly replace the 2026-09-ALF in existing designs?

A: Electrical substitution is valid based on identical voltage rating, discharge current capacity, pole count, and fail-short characteristics. Mechanical compatibility must be confirmed, as the substitute features a 1-lead cylinder package versus the no-lead design of the original part.

Q: What is the significance of the packaging difference between these parts?

A: The main part uses a cylinder no-lead, 3-terminal configuration, while the substitute uses a cylinder 1-lead, 3-terminal configuration. This affects mounting and PCB layout considerations. Verify that the substitute's lead configuration accommodates the existing mounting structure.

Q: Why is the 2026-09-ALF listed as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 2026-09-A1FLF, as an active-status component within the same TRIGARD® 2026 series, provides continued availability for equivalent electrical performance.

Q: Are there compliance differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence for procurement and deployment.

Q: What parameters must remain constant for valid substitution?

A: Voltage rating (90V), discharge current (20kA), pole count (3), fail-short operation, and series family (TRIGARD® 2026) must remain unchanged. Packaging and product status may differ without affecting electrical equivalence.