GTCA28-801L-P05 Equivalent & Substitute Parts

Part Overview

The GTCA28-801L-P05 is a Gas Discharge Tube (GDT) rated for 800V DC spark-over voltage with 5kA impulse discharge current capacity in a 2-pole through-hole configuration. Manufactured by Littelfuse Inc., this component is classified as obsolete. Due to its obsolete status, equivalent substitute parts with enhanced specifications and active product status are available to ensure design continuity and supply chain reliability.

Substiute Parts

GTCA28-801L-P05

Littelfuse Inc.In Stock: 1185GTCA28-801L-P05 Datasheet

Current PartRFQ

CG2800LTR

Littelfuse Inc.In Stock: 2358CG2800LTR Datasheet

DirectRFQ

CG2800L

LittelfuseIn Stock: 1314CG2800L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GTCA28-801L-P05 is based on the following critical parameters that must remain constant or be enhanced:

• Voltage Rating (800V DC Spark Over): All substitute parts maintain the identical 800V nominal spark-over voltage, ensuring compatibility with the original circuit protection design.
• Number of Poles (2-Pole): Substitute parts retain the 2-pole configuration for equivalent circuit topology.
• Mounting Type (Through Hole): All alternatives use through-hole mounting to maintain PCB compatibility.
• Package Type (Axial Cylinder): Physical form factor remains consistent across all parts.
• Fail Short Characteristic (No): All parts maintain the non-shorting failure mode.

The substitute parts CG2800LTR and CG2800L offer enhanced impulse discharge current capacity (10kA versus 5kA), providing superior surge protection performance while maintaining all other electrical and mechanical specifications. Both substitute parts carry active product status and full RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Both CG2800LTR and CG2800L are qualified substitutes for the obsolete GTCA28-801L-P05. Selection between the two substitute parts should be based on packaging requirements:

• CG2800LTR is supplied in Cut Tape (CT) packaging, suitable for automated assembly processes and component feeders.
• CG2800L is supplied in Tray packaging, suitable for manual handling and bulk storage applications.

Both parts maintain full RoHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original part. The enhanced 10kA impulse discharge current rating provides increased protection margin compared to the original 5kA specification, while maintaining identical voltage and pole configuration.

Frequently Asked Questions (FAQ)

Q: Can CG2800LTR or CG2800L be used as direct replacements for GTCA28-801L-P05?

A: Yes. Both substitute parts maintain the critical electrical parameters: 800V DC spark-over voltage, 2-pole configuration, through-hole mounting, and axial cylinder package. The enhanced 10kA impulse discharge current provides equivalent or superior protection performance.

Q: What is the primary difference between CG2800LTR and CG2800L?

A: The parts are electrically identical. The difference is packaging: CG2800LTR uses Cut Tape (CT) for automated assembly, while CG2800L uses Tray packaging for manual handling.

Q: Does the increased impulse discharge current (10kA vs. 5kA) affect circuit compatibility?

A: No. The higher current rating represents enhanced surge protection capability. The voltage rating, pole count, and mounting configuration remain identical, ensuring full circuit compatibility.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both CG2800LTR and CG2800L are ROHS3 compliant and REACH unaffected, meeting the same regulatory standards as the original GTCA28-801L-P05.

Q: Why is the original GTCA28-801L-P05 marked as obsolete?

A: The original part has been superseded by the CG2 series, which offers improved specifications and active manufacturing status. Littelfuse recommends transitioning to the CG2800L or CG2800LTR for new designs and ongoing supply assurance.