SL1024B090RF Gas Discharge Tube - Equivalent & Substitute Parts

Part Overview

The SL1024B090RF is a 3-pole gas discharge tube (GDT) rated for 90V DC spark-over voltage with 20kA impulse discharge current capacity. Designed for through-hole mounting in axial cylinder configuration, this component is used for overvoltage protection in telecommunications, industrial control, and power distribution applications.

The SL1024B090RF is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or field replacement requirements for systems utilizing this component.

Substiute Parts

SL1024B090RF

Littelfuse Inc.In Stock: 960SL1024B090RF Datasheet

Current PartRFQ

SL1021B090RF

Littelfuse Inc.In Stock: 877SL1021B090RF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SL1024B090RF is determined by strict equivalence across the following critical parameters:

• Voltage - DC Spark Over (Nominal): 90V
• Impulse Discharge Current (8/20µs): 20000A (20kA)
• Number of Poles: 3
• Fail Mode: Short
• Mounting Type: Through Hole
• Package / Case: Axial Cylinder, 3 Lead (Radial Bend)
• RoHS Status: ROHS3 Compliant

The SL1021B090RF meets all substitution criteria. While the SL1024B090RF is obsolete and the SL1021B090RF is active, both components share identical electrical ratings, mechanical configuration, and compliance certifications, making them functionally interchangeable for circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

The SL1021B090RF is the direct substitute for the obsolete SL1024B090RF. Both components are manufactured by Littelfuse Inc. and maintain identical electrical performance specifications and mechanical form factors.

The SL1021B090RF carries active product status, ensuring ongoing manufacturer support, documentation availability, and supply chain continuity. Both parts are ROHS3 compliant and carry MSL 1 rating, indicating no moisture sensitivity constraints during storage or handling.

The primary distinction is packaging format: the SL1024B090RF was supplied in bulk, while the SL1021B090RF is supplied in tray packaging. This packaging difference does not affect electrical or mechanical compatibility and is a standard industry practice for active product lines.

Frequently Asked Questions (FAQ)

Q: Can the SL1021B090RF be used as a direct replacement for the SL1024B090RF in existing designs?

A: Yes. The SL1021B090RF is electrically and mechanically equivalent to the SL1024B090RF. Both components share identical voltage ratings (90V DC spark-over), current capacity (20kA), pole configuration (3-pole), fail mode (short), mounting type (through-hole), and package geometry (axial cylinder, 3-lead radial bend). No circuit modifications are required.

Q: Why is the SL1024B090RF listed as obsolete?

A: The SL1024B090RF has been superseded by the SL1021B090RF within Littelfuse's product portfolio. The SL1021B090RF is the active equivalent and is the recommended part for new designs and ongoing production.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the SL1024B090RF and SL1021B090RF are ROHS3 compliant, carry identical MSL 1 ratings, and share the same ECCN and HTSUS classifications. Compliance certifications are equivalent.

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

A: No. Packaging format is a supply chain and handling consideration only. It does not affect electrical performance, mechanical fit, or circuit functionality. The components are pin-for-pin and functionally identical.

Q: What are the critical parameters for substitution eligibility?

A: Substitution is valid when the following parameters match: DC spark-over voltage (90V), impulse discharge current (20kA), number of poles (3), fail mode (short), mounting type (through-hole), and package geometry (axial cylinder, 3-lead radial bend). The SL1021B090RF meets all these criteria.