SL1024A250RF Gas Discharge Tube - Equivalent & Substitute Parts

Part Overview

The SL1024A250RF is a 3-pole gas discharge tube (GDT) rated for 250V DC spark-over voltage with 10kA impulse discharge current capacity. Designed for through-hole mounting in axial cylinder configuration, this component is used for transient overvoltage protection in industrial and telecommunications applications.

The SL1024A250RF 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

SL1024A250RF

Littelfuse Inc.In Stock: 934SL1024A250RF Datasheet

Current PartRFQ

SL1021A250RF

LittelfuseIn Stock: 717SL1021A250RF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SL1024A250RF is determined by strict equivalence across the following critical parameters:

• Voltage - DC Spark Over (Nominal): 250 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 SL1021A250RF meets all substitution criteria. Both parts are manufactured by Littelfuse Inc., share identical electrical ratings, mechanical configuration, and regulatory compliance status. The primary distinction is product status: SL1024A250RF is obsolete, while SL1021A250RF is active production.

Parameter Comparison

Engineering Selection Recommendations

The SL1021A250RF is the direct substitute for the obsolete SL1024A250RF. Both components are manufactured by Littelfuse Inc. and maintain identical electrical performance, mechanical form factor, and regulatory compliance.

Selection of SL1021A250RF is supported by:

• Active product status ensuring ongoing availability and supply chain support
• ROHS3 compliance matching the original part specification
• Identical electrical ratings (250V DC spark-over, 10kA impulse discharge current)
• Identical mechanical configuration (3-pole, through-hole, axial cylinder package)
• EAR99 export classification and HTSUS code alignment

No additional qualification or testing parameters are introduced by this substitution.

Frequently Asked Questions (FAQ)

Q: Can SL1021A250RF be used as a direct replacement for SL1024A250RF in existing designs?

A: Yes. The SL1021A250RF is electrically and mechanically equivalent to the SL1024A250RF. Both components share identical voltage ratings, discharge current capacity, pole configuration, mounting type, and package specification. No circuit redesign is required.

Q: What is the primary reason for substitution?

A: The SL1024A250RF is classified as obsolete. The SL1021A250RF is the active production equivalent from the same manufacturer, ensuring continued supply availability.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, carry identical ECCN (EAR99) and HTSUS classifications, and maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: Does packaging differ between these parts?

A: The electrical and mechanical specifications are identical. The SL1024A250RF is listed with standard packaging, while the SL1021A250RF is supplied in tray packaging. The component itself maintains the same axial cylinder, 3-lead radial bend configuration in both cases.

Q: Are there inventory considerations for this substitution?

A: The SL1021A250RF is actively manufactured and stocked. The SL1024A250RF, being obsolete, has limited remaining inventory. For new designs or ongoing production, SL1021A250RF should be specified.