SL1024B350RG Gas Discharge Tube - Equivalent & Substitute Parts

Part Overview

The SL1024B350RG is a 3-pole gas discharge tube (GDT) rated for 350V 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 SL1024B350RG is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

SL1024B350RG

Littelfuse Inc.In Stock: 997SL1024B350RG Datasheet

Current PartRFQ

SL1021B350RF

Littelfuse Inc.In Stock: 1467SL1021B350RF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL1024B350RG is determined by strict equivalence across the following critical parameters:

• Voltage - DC Spark Over (Nominal): 350V
• 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
• Moisture Sensitivity Level: 1 (Unlimited)

The SL1021B350RF meets all specified electrical and mechanical parameters and is therefore classified as a direct substitute for the obsolete SL1024B350RG.

Parameter Comparison

Engineering Selection Recommendations

The SL1021B350RF is the direct substitute for the obsolete SL1024B350RG. Both components are manufactured by Littelfuse Inc. and share identical electrical ratings (350V DC spark-over, 20kA impulse discharge current) and mechanical specifications (3-pole, through-hole, axial cylinder package).

The SL1021B350RF carries Active product status, ensuring ongoing availability and supply chain support. Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) ratings, confirming equivalent environmental and reliability characteristics.

The primary difference is packaging format: the SL1024B350RG is supplied in bulk, while the SL1021B350RF is supplied in trays. This packaging distinction does not affect electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SL1021B350RF be used as a direct replacement for the SL1024B350RG?

A: Yes. The SL1021B350RF is a direct substitute. Both components have identical electrical ratings (350V DC spark-over, 20kA impulse discharge current), identical mechanical specifications (3-pole, through-hole mounting, axial cylinder package), and equivalent compliance certifications (ROHS3, MSL 1).

Q: What is the difference between these two part numbers?

A: The SL1024B350RG is obsolete, while the SL1021B350RF is active. Both are manufactured by Littelfuse Inc. and share the same electrical and mechanical characteristics. The packaging differs: bulk versus tray. The series designation also differs (SL1024B versus SL1021B), reflecting different product generations within the Littelfuse GDT portfolio.

Q: Are there any compatibility concerns when substituting the SL1021B350RF for the SL1024B350RG?

A: No compatibility concerns exist. The components are mechanically and electrically equivalent. Both feature the same axial cylinder, 3-lead radial bend package suitable for through-hole PCB mounting. Electrical performance, including spark-over voltage and impulse discharge current, is identical.

Q: Does the packaging format (bulk versus tray) affect component performance?

A: No. Packaging format affects only handling, storage, and ordering logistics. Electrical and mechanical performance is unaffected. The tray packaging of the SL1021B350RF may provide improved handling and traceability benefits compared to bulk packaging.

Q: Are both parts RoHS compliant?

A: Yes. Both the SL1024B350RG and SL1021B350RF are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, confirming equivalent environmental compliance.