SL1024A230RF Gas Discharge Tube - Equivalent & Substitute Parts

Part Overview

The SL1024A230RF is a 3-pole gas discharge tube (GDT) rated for 230V DC spark-over voltage with 10kA impulse discharge current capacity. Designed for through-hole mounting in axial cylinder configuration, this component is used for overvoltage protection in industrial and telecommunications applications.

The SL1024A230RF is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or field replacement requirements.

Substiute Parts

SL1024A230RF

LittelfuseIn Stock: 756SL1024A230RF Datasheet

Current PartRFQ

SL1021A230RF

Littelfuse Inc.In Stock: 710SL1021A230RF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SL1024A230RF is determined by strict equivalence across the following critical parameters:

• Voltage - DC Spark Over (Nominal): 230 V
• Impulse Discharge Current (8/20µs): 10000A (10kA)
• Number of Poles: 3
• Fail Short characteristic: Yes
• Mounting Type: Through Hole
• Package / Case: Axial Cylinder, 3 Lead (Radial Bend)
• RoHS Status: ROHS3 Compliant

The SL1021A230RF meets all substitution criteria. While classified as a different series within the Littelfuse product line, it maintains identical electrical performance specifications and mechanical compatibility with the original design.

Parameter Comparison

Engineering Selection Recommendations

The SL1021A230RF is a direct functional equivalent to the SL1024A230RF. Selection between these parts should be based on the following factors:

Product Status: The SL1024A230RF is obsolete, while the SL1021A230RF maintains active product status. For new designs or long-term supply assurance, the SL1021A230RF is the preferred selection.

Compliance & Certifications: Both parts are ROHS3 compliant and carry identical electrical and mechanical specifications. Both are rated for unlimited moisture sensitivity (MSL 1), indicating no special storage or handling requirements.

Availability: Current inventory levels support both options. Selection may depend on immediate procurement requirements and supply chain logistics.

Packaging Consideration: The SL1024A230RF is supplied in standard packaging, while the SL1021A230RF is supplied in tray packaging. Verify packaging compatibility with assembly equipment and handling procedures.

Frequently Asked Questions (FAQ)

Q: Can the SL1021A230RF directly replace the SL1024A230RF in existing designs?

A: Yes. The SL1021A230RF is electrically and mechanically equivalent. It maintains identical voltage rating (230V DC spark-over), discharge current capacity (10kA), pole configuration (3-pole), and mounting characteristics (through-hole, axial cylinder). No circuit modifications are required.

Q: Why are these parts from different series (SL1024A vs. SL1021A) if they are equivalent?

A: Series designation reflects product line evolution within the Littelfuse portfolio. The SL1021A represents an active product line, while the SL1024A is obsolete. Both series share identical electrical and mechanical specifications for this voltage and current rating.

Q: Are there any differences in reliability or performance between these parts?

A: No differences are specified in the provided technical parameters. Both parts are ROHS3 compliant, carry identical MSL ratings, and meet the same electrical performance standards.

Q: What is the significance of the "Fail Short" characteristic?

A: The "Fail Short" designation indicates that upon overvoltage event, the gas discharge tube transitions to a low-impedance state, effectively shorting the protected circuit. This is a standard protective behavior for GDT devices in this application class.

Q: Does packaging type affect electrical performance?

A: No. Packaging type (standard vs. tray) is a logistics and handling consideration only. It does not affect electrical characteristics, performance, or compatibility with circuit designs.

Q: Are both parts suitable for new product designs?

A: The SL1021A230RF is recommended for new designs due to its active product status. The SL1024A230RF, being obsolete, is suitable for replacement or field service applications where existing inventory is available.