GTCN28-601L-P05 Equivalent & Substitute Parts

Part Overview

The GTCN28-601L-P05 is a Gas Discharge Tube (GDT) rated for 600V DC spark-over voltage with 5kA impulse discharge current in a 2-pole configuration. Manufactured by Littelfuse Inc., this component is classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

GTCN28-601L-P05

Littelfuse Inc.In Stock: 996GTCN28-601L-P05 Datasheet

Current PartRFQ

CG2600

Littelfuse Inc.In Stock: 1138CG2600 Datasheet

DirectRFQ

CG2600MS

Littelfuse Inc.In Stock: 1887CG2600MS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the GTCN28-601L-P05 is determined by the following critical parameters:

• Voltage Rating (600V DC Spark Over): All substitute parts must maintain the same nominal spark-over voltage to ensure circuit protection at the design threshold.
• Number of Poles (2-Pole): The 2-pole configuration must be preserved for proper circuit topology compatibility.
• Fail Short Characteristic (No): All substitutes must maintain the non-fail-short behavior to prevent unintended circuit closure.
• RoHS3 Compliance: All substitute parts must meet the same environmental and regulatory standards.
• Moisture Sensitivity Level (MSL 1): All substitutes must have unlimited moisture sensitivity rating for storage and handling compatibility.

The substitute parts CG2600 and CG2600MS meet these core substitution criteria. Both are active products from Littelfuse Inc. in the CG2 series, maintaining the 600V rating and 2-pole configuration. The primary difference between substitutes is the impulse discharge current rating and mounting type, which represent enhanced or alternative form factors rather than incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

CG2600 is the direct functional equivalent for through-hole or user-defined mounting applications. As an active product with ROHS3 compliance and REACH unaffected status, it provides immediate availability and regulatory continuity. The increased impulse discharge current rating (20kA versus 5kA) represents enhanced surge handling capability and does not create incompatibility with the original design specification.

CG2600MS is the surface-mount alternative for designs requiring SMD assembly. It maintains identical electrical specifications to CG2600 while offering a 2-SMD Cylinder Square End package format. This option is suitable for applications transitioning to surface-mount technology or requiring automated assembly processes. Both substitute parts are currently in active production status, ensuring long-term component availability.

Frequently Asked Questions (FAQ)

Q: Can CG2600 or CG2600MS be used as direct replacements for GTCN28-601L-P05?

A: Yes. Both substitute parts maintain the critical electrical parameters: 600V DC spark-over voltage, 2-pole configuration, and non-fail-short characteristic. The higher impulse discharge current rating (20kA) provides enhanced protection capability without creating circuit incompatibility.

Q: What is the difference between CG2600 and CG2600MS?

A: The primary difference is mounting type and package format. CG2600 uses a Cylinder No Lead package for user-defined mounting, while CG2600MS uses a 2-SMD Cylinder Square End package for surface-mount assembly. Both have identical electrical specifications.

Q: Why does the substitute part have a higher impulse discharge current rating?

A: The CG2 series represents a newer product generation with improved surge handling characteristics. The 20kA rating is a design enhancement that maintains backward compatibility while providing superior transient protection.

Q: Are there any compliance or regulatory differences between the main part and substitutes?

A: No. All parts are ROHS3 compliant, REACH unaffected, and have MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental compliance is maintained across all options.

Q: Which substitute should be selected for new designs?

A: Selection depends on assembly method. For through-hole or user-defined mounting, use CG2600. For surface-mount assembly, use CG2600MS. Both are active products with equivalent electrical performance.