GTCN28-900M-P05 Equivalent & Substitute Parts

Part Overview

The GTCN28-900M-P05 is a Gas Discharge Tube (GDT) rated at 90V DC spark-over voltage with 5000A (5kA) impulse discharge current capacity 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

GTCN28-900M-P05

Littelfuse Inc.In Stock: 752GTCN28-900M-P05 Datasheet

Current PartRFQ

SL1011A090C

Littelfuse Inc.In Stock: 823SL1011A090C Datasheet

DirectRFQ

CG90MS

Littelfuse Inc.In Stock: 3715CG90MS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GTCN28-900M-P05 are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Voltage - DC Spark Over (Nom): 90 V
• Number of Poles: 2
• Fail Short characteristic: No
• RoHS and REACH compliance status

Secondary Consideration:

• Impulse Discharge Current (8/20µs) capacity
• Mounting Type and Package configuration
• Product Status (Active vs. Obsolete)

Two substitute parts meet the primary electrical criteria. The first substitute maintains identical impulse discharge current rating, while the second substitute provides enhanced current capacity with a different mounting technology.

Parameter Comparison

Engineering Selection Recommendations

SL1011A090C is the direct functional equivalent to GTCN28-900M-P05. Both parts share identical electrical specifications (90V spark-over, 5kA impulse discharge current, 2-pole configuration) and identical package geometry (Cylinder No Lead). The SL1011A090C is currently in active production status, making it the primary replacement for obsolete GTCN28-900M-P05 applications. Both parts maintain ROHS3 compliance and REACH unaffected status.

CG90MS is a manufacturer-recommended alternative that maintains the same 90V spark-over voltage and 2-pole configuration but provides four times the impulse discharge current capacity (20kA vs. 5kA). This part uses surface mount technology (2-SMD Cylinder Square End package) rather than the user-defined mounting of the original part. CG90MS is suitable for applications requiring enhanced surge protection capability or where PCB assembly processes support surface mount components. This part is also in active production status.

Selection between SL1011A090C and CG90MS depends on circuit board assembly capabilities and surge protection requirements. For direct replacement in existing designs, SL1011A090C is appropriate. For new designs or applications requiring higher surge current handling, CG90MS offers enhanced protection with surface mount integration.

Frequently Asked Questions (FAQ)

Q: Can SL1011A090C be used as a direct replacement for GTCN28-900M-P05?

A: Yes. SL1011A090C is electrically and mechanically equivalent. Both parts have 90V spark-over voltage, 5kA impulse discharge current, 2-pole configuration, and identical Cylinder No Lead package geometry. Both are ROHS3 compliant and REACH unaffected.

Q: What is the difference between SL1011A090C and CG90MS?

A: The primary difference is impulse discharge current capacity: SL1011A090C provides 5kA while CG90MS provides 20kA. Additionally, CG90MS uses surface mount technology (2-SMD Cylinder Square End) whereas SL1011A090C uses the same user-defined mounting as the original part. Both maintain 90V spark-over voltage and 2-pole configuration.

Q: Can CG90MS replace GTCN28-900M-P05 in existing designs?

A: CG90MS can replace GTCN28-900M-P05 electrically but requires design modification due to different mounting technology. The original part uses Cylinder No Lead (through-hole or user-defined) mounting, while CG90MS is a surface mount component with 2-SMD Cylinder Square End package. Circuit board layout and assembly process must accommodate surface mount technology.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. GTCN28-900M-P05, SL1011A090C, and CG90MS are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Why is GTCN28-900M-P05 obsolete?

A: Product status information indicates obsolescence. SL1011A090C and CG90MS are active production parts from the same manufacturer, providing continuity for applications previously using GTCN28-900M-P05.