SL1024B500C Equivalent & Substitute Parts

Part Overview

The SL1024B500C is a Gas Discharge Tube (GDT) rated for 500V DC spark-over voltage with 20kA impulse discharge current capacity in a 3-pole configuration. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and procurement planning. The SL1024B500C maintains ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), suitable for applications requiring reliable overvoltage protection in multi-pole configurations.

Substiute Parts

SL1024B500C

Littelfuse Inc.In Stock: 694SL1024B500C Datasheet

Current PartRFQ

SL1021B500C

Littelfuse Inc.In Stock: 1311SL1021B500C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL1024B500C is determined by strict equivalence across the following critical parameters:

• Voltage - DC Spark Over (Nominal): 500V
• Impulse Discharge Current (8/20µs): 20000A (20kA)
• Number of Poles: 3
• Package / Case: Cylinder No Lead, 3 Terminal
• Fail Short Characteristic: No
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The SL1021B500C qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction is product status: SL1021B500C is Active, whereas SL1024B500C is Obsolete.

Parameter Comparison

Engineering Selection Recommendations

The SL1021B500C is the direct equivalent for SL1024B500C applications. Selection of SL1021B500C is supported by:

• Identical electrical specifications: 500V DC spark-over voltage and 20kA impulse discharge current
• Identical mechanical configuration: 3-pole, Cylinder No Lead, 3 Terminal package
• Active product status ensures ongoing availability and supply chain continuity
• Equivalent compliance certifications: ROHS3 Compliant, MSL 1 (Unlimited)
• Same manufacturer (Littelfuse Inc.) ensures design and performance consistency

For new designs or component replenishment, SL1021B500C is the appropriate selection due to its Active status and equivalent functional performance.

Frequently Asked Questions (FAQ)

Q: Can SL1021B500C directly replace SL1024B500C in existing applications?

A: Yes. Both components share identical electrical ratings (500V DC spark-over, 20kA impulse discharge current), mechanical configuration (3-pole, Cylinder No Lead, 3 Terminal), and compliance certifications. Direct substitution is supported without circuit modification.

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

A: The SL1024B500C is Obsolete, while SL1021B500C is Active. Both are manufactured by Littelfuse Inc. and meet identical electrical and mechanical specifications. The packaging differs: SL1024B500C uses standard packaging while SL1021B500C is supplied in Tray packaging.

Q: Are there any compliance or certification differences?

A: No. Both components are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating. Regulatory compliance is equivalent.

Q: What parameters must remain constant for substitution?

A: Voltage - DC Spark Over (500V), Impulse Discharge Current (20kA), Number of Poles (3), Package / Case (Cylinder No Lead, 3 Terminal), and Fail Short characteristic (No) must all remain constant for functional equivalence.