SL1024B250RF Equivalent & Substitute Parts

Part Overview

The SL1024B250RF is a Gas Discharge Tube (GDT) rated for 250V DC spark-over voltage with 20kA impulse discharge current capacity in a 3-pole through-hole configuration. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement planning. The SL1024B series has been superseded by the SL1021B series while maintaining identical electrical and mechanical specifications.

Substiute Parts

SL1024B250RF

Littelfuse Inc.In Stock: 1119SL1024B250RF Datasheet

Current PartRFQ

SL1021B250RF

Littelfuse Inc.In Stock: 1181SL1021B250RF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SL1021B250RF qualifies as a direct substitute for the SL1024B250RF based on the following critical parameters:

• Voltage Rating: Both parts specify 250V DC spark-over voltage
• Discharge Current: Both parts are rated for 20kA impulse discharge current (8/20µs)
• Pole Configuration: Both are 3-pole devices
• Fail Mode: Both fail short
• Mounting and Package: Both utilize through-hole mounting with identical axial cylinder, 3-lead radial bend package geometry
• Environmental Compliance: Both meet ROHS3 compliance and MSL 1 (unlimited moisture sensitivity)

The substitution is valid across all specified electrical and mechanical parameters. The primary distinction is product status: SL1024B is obsolete while SL1021B is active.

Parameter Comparison

Engineering Selection Recommendations

The SL1021B250RF is the appropriate substitute for the obsolete SL1024B250RF. Both parts are manufactured by Littelfuse Inc. and maintain identical electrical performance characteristics and mechanical form factors. The SL1021B series represents the active product line continuation, ensuring long-term availability and supply chain stability. Both parts satisfy ROHS3 compliance requirements and carry equivalent environmental ratings. Selection of the SL1021B250RF eliminates obsolescence risk while preserving circuit performance and PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SL1021B250RF be used as a direct replacement for the SL1024B250RF?

A: Yes. Both parts share identical electrical specifications (250V spark-over, 20kA discharge current), 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: What is the primary reason for substitution?

A: The SL1024B250RF is classified as obsolete. The SL1021B250RF is the active equivalent from the same manufacturer, ensuring continued availability and supply chain support.

Q: Are there packaging differences between these parts?

A: The SL1024B250RF is supplied in standard packaging, while the SL1021B250RF is supplied in trays. Both parts use identical through-hole package geometry and are mechanically interchangeable on PCBs.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SL1024B250RF and SL1021B250RF are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). Both carry EAR99 ECCN classification and the same HTSUS code (8536.30.8000).

Q: Are there any electrical performance differences?

A: No. Both parts are specified for identical voltage ratings, discharge current capacity, and fail-short characteristics. They are electrically equivalent.