SL1024A450R Gas Discharge Tube - Equivalent & Substitute Parts

Part Overview

The SL1024A450R is a 3-pole gas discharge tube (GDT) rated for 450V DC spark-over voltage with 10kA impulse discharge current capacity. Designed for through-hole mounting in axial cylinder configuration, this component is classified as obsolete. Due to its obsolete status, identifying active equivalent parts is essential for ongoing design support, maintenance, and new production requirements.

Substiute Parts

SL1024A450R

Littelfuse Inc.In Stock: 1273SL1024A450R Datasheet

Current PartRFQ

SL1021A450R

Littelfuse Inc.In Stock: 1324SL1021A450R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL1024A450R is determined by strict equivalence across the following critical parameters:

• Voltage - DC Spark Over (Nominal): 450 V
• Impulse Discharge Current (8/20µs): 10000A (10kA)
• Number of Poles: 3
• Mounting Type: Through Hole
• Package / Case: Axial Cylinder, 3 Lead (Radial Bend)
• Fail Short Characteristic: No

The SL1021A450R meets all these criteria and is manufactured by the same supplier (Littelfuse Inc.), ensuring functional and mechanical compatibility. The primary distinction is product status: SL1021A450R is active, whereas SL1024A450R is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The SL1021A450R is the direct equivalent for the obsolete SL1024A450R. Both components share identical electrical specifications (450V spark-over, 10kA impulse current), mechanical configuration (3-pole through-hole axial cylinder), and regulatory compliance (ROHS3, EAR99 classification). The SL1021A450R maintains active product status with current manufacturing support from Littelfuse Inc., making it the appropriate selection for applications requiring the SL1024A450R performance envelope.

Frequently Asked Questions (FAQ)

Q: Can SL1021A450R be used as a direct replacement for SL1024A450R?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 450V spark-over voltage, 10kA impulse discharge current, 3-pole configuration, through-hole mounting, and axial cylinder package. The SL1021A450R is the active equivalent.

Q: What is the difference between SL1024A450R and SL1021A450R?

A: The primary difference is product lifecycle status. SL1024A450R is obsolete; SL1021A450R is active. All electrical, mechanical, and compliance parameters are equivalent.

Q: Are there packaging differences between these parts?

A: Both parts use identical package configuration: Axial Cylinder, 3 Lead (Radial Bend). The SL1024A450R was supplied in standard packaging, while SL1021A450R is supplied in tray packaging. The component itself is unchanged.

Q: What compliance certifications apply to both parts?

A: Both SL1024A450R and SL1021A450R are ROHS3 compliant, classified under ECCN EAR99, and carry HTSUS code 8536.30.8000. Moisture sensitivity level is 1 (Unlimited) for both.

Q: Is the SL1021A450R suitable for new designs?

A: Yes. As an active product with current manufacturing support, SL1021A450R is appropriate for new designs requiring 450V, 10kA, 3-pole gas discharge tube protection in through-hole configuration.