CG41.2SM Gas Discharge Tube 1200V 3kA 2-Pole SMD Equivalent & Substitute Parts

Part Overview

The CG41.2SM is a Gas Discharge Tube (GDT) manufactured by Littelfuse Inc., designed for overvoltage protection applications requiring 1200V DC spark-over voltage with 3000A (3kA) impulse discharge current capacity. This 2-pole surface mount component is classified as Active product status and is ROHS3 compliant. Alternative equivalent parts may be required due to supply chain considerations, inventory availability, or specific procurement requirements while maintaining identical electrical and mechanical performance characteristics.

Substiute Parts

CG41.2SM

Littelfuse Inc.In Stock: 1427CG41.2SM Datasheet

Current PartRFQ

2093-120-SM-RPLF

Bourns Inc.In Stock: 19872093-120-SM-RPLF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CG41.2SM are determined by strict equivalence across the following critical parameters:

• Voltage - DC Spark Over (Nominal): 1200 V
• Impulse Discharge Current (8/20µs): 3000A (3kA)
• Number of Poles: 2
• Mounting Type: Surface Mount
• Package / Case: 2-SMD Cylinder Square End
• Fail Short characteristic: No

The substitute part 2093-120-SM-RPLF manufactured by Bourns Inc. meets all these electrical and mechanical requirements, ensuring functional interchangeability in circuit applications. Both parts maintain identical spark-over voltage, discharge current capacity, pole configuration, and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

Both the CG41.2SM and 2093-120-SM-RPLF are Active product status components with full ROHS3 compliance and REACH unaffected status. Selection between these parts may be based on:

• Procurement availability and lead time requirements
• Inventory stock levels (CG41.2SM: 1391 pcs; 2093-120-SM-RPLF: 1972 pcs)
• Supplier preference and established vendor relationships
• Cost considerations within equivalent electrical specifications

Both components are suitable for direct substitution in 1200V 3kA 2-pole surface mount GDT applications without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the 2093-120-SM-RPLF replace the CG41.2SM in existing designs?

A: Yes. Both components share identical electrical specifications (1200V spark-over, 3kA discharge current), pole configuration (2-pole), mounting type (surface mount), and physical package (2-SMD Cylinder Square End). Direct substitution is electrically and mechanically compatible.

Q: Are there differences in tolerance specifications between these parts?

A: The CG41.2SM lists tolerance as not specified in the provided data. The 2093-120-SM-RPLF specifies ±20% tolerance. Both parts meet the same nominal 1200V spark-over voltage requirement.

Q: Do both parts have identical moisture sensitivity requirements?

A: Yes. Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry the same ECCN classification (EAR99), ensuring equivalent regulatory status for procurement and use.

Q: What is the physical package compatibility?

A: Both parts use the 2-SMD Cylinder Square End package, ensuring identical PCB footprint and assembly compatibility without layout modifications.