SL1024B230RG Gas Discharge Tube - Equivalent & Substitute Parts

Part Overview

The SL1024B230RG is a 3-pole gas discharge tube (GDT) rated for 230V DC spark-over voltage with an impulse discharge current capacity of 20kA (8/20µs). Manufactured by Littelfuse Inc., this component is designed for through-hole mounting applications requiring overvoltage protection in multi-pole configurations.

The SL1024B230RG is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

SL1024B230RG

Littelfuse Inc.In Stock: 1084SL1024B230RG Datasheet

Current PartRFQ

SL1021B230RF

Littelfuse Inc.In Stock: 3407SL1021B230RF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL1024B230RG is determined by strict equivalence across the following critical parameters:

• Voltage - DC Spark Over (Nominal): 230 V
• Impulse Discharge Current (8/20µs): 20000A (20kA)
• 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 substitute part SL1021B230RF meets all these criteria. Differences in series designation (SL1024B vs. SL1021B), product status (obsolete vs. active), and packaging format (bulk vs. tray) do not affect functional equivalence for overvoltage protection applications.

Parameter Comparison

Engineering Selection Recommendations

The SL1021B230RF is the direct functional equivalent for the obsolete SL1024B230RG. Both components are manufactured by Littelfuse Inc. and share identical electrical and mechanical specifications across all critical parameters.

Selection of the SL1021B230RF is supported by:

• Active product status, ensuring ongoing availability and manufacturer support
• ROHS3 compliance certification, meeting environmental and regulatory requirements
• Identical voltage and current ratings, guaranteeing functional compatibility in existing circuit designs
• Matching mechanical form factor and mounting configuration, enabling direct board-level substitution

The transition from SL1024B230RG to SL1021B230RF requires no circuit redesign or application re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the SL1021B230RF be used as a direct replacement for the SL1024B230RG?

A: Yes. Both components share identical electrical ratings (230V DC spark-over, 20kA impulse discharge current), pole configuration (3-pole), fail-short characteristic, mounting type (through-hole), and physical package (axial cylinder, 3-lead radial bend). No circuit modifications are required.

Q: What is the difference between the SL1024B and SL1021B series designations?

A: Series designation reflects internal Littelfuse product line organization. The SL1021B series represents the current active product line, while SL1024B is obsolete. Functionally, both series deliver equivalent performance for 230V, 20kA 3-pole gas discharge tube applications.

Q: Does the packaging format difference (bulk vs. tray) affect compatibility?

A: No. Packaging format affects only handling, storage, and supply chain logistics. The electrical and mechanical properties of the component remain identical regardless of whether it is supplied in bulk or tray format.

Q: Are both parts RoHS compliant?

A: Yes. Both the SL1024B230RG and SL1021B230RF are ROHS3 compliant, meeting environmental and regulatory standards for electronic component manufacturing.

Q: What is the Moisture Sensitivity Level (MSL) for these components?

A: Both components carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.