SL1024B450C Equivalent & Substitute Parts

Part Overview

The SL1024B450C is a Gas Discharge Tube (GDT) rated for 450V DC spark-over voltage with 20kA impulse discharge current capacity in a 3-pole configuration. This component is classified as Obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The SL1024B series has been superseded by active production alternatives that maintain identical electrical and mechanical specifications.

Substiute Parts

SL1024B450C

Littelfuse Inc.In Stock: 726SL1024B450C Datasheet

Current PartRFQ

SL1021B450C

Littelfuse Inc.In Stock: 1459SL1021B450C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL1024B450C is based on electrical and mechanical parameter equivalence. The following criteria determine direct substitutability:

• Voltage - DC Spark Over (Nominal): 450V
• Impulse Discharge Current (8/20µs): 20000A (20kA)
• Number of Poles: 3
• Package / Case: Cylinder No Lead, 3 Terminal
• Fail Short characteristic: No
• RoHS3 Compliance and MSL Level 1 rating

The SL1021B450C meets all these criteria and is classified as Active product status, making it a direct functional equivalent for the obsolete SL1024B450C.

Parameter Comparison

Engineering Selection Recommendations

The SL1021B450C is the direct substitute for the SL1024B450C. Both components are manufactured by Littelfuse Inc. and share identical electrical ratings (450V DC spark-over, 20kA impulse discharge current) and mechanical specifications (3-pole, cylinder no-lead package). The SL1021B450C carries Active product status, ensuring continued availability and supply chain reliability. Both parts maintain ROHS3 compliance and identical export classification (EAR99), supporting regulatory requirements across applications. The transition from SL1024B to SL1021B involves no electrical or mechanical redesign considerations.

Frequently Asked Questions (FAQ)

Q: Can the SL1021B450C be used as a direct replacement for the SL1024B450C?

A: Yes. Both components have identical voltage ratings (450V DC spark-over), discharge current capacity (20kA), pole configuration (3-pole), and package type (Cylinder No Lead, 3 Terminal). No circuit modifications are required.

Q: What is the difference between the SL1024B and SL1021B series?

A: The SL1024B series is Obsolete, while the SL1021B series is Active. The electrical and mechanical specifications are equivalent. The series designation change reflects manufacturing evolution within the Littelfuse GDT product line.

Q: Are there packaging differences between these parts?

A: The SL1024B450C uses standard packaging, while the SL1021B450C is supplied in Tray packaging. Both maintain identical component specifications and terminal configuration. Tray packaging is standard for active production parts and does not affect electrical performance or mechanical fit.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SL1024B450C and SL1021B450C are ROHS3 compliant with MSL Level 1 (Unlimited) rating. Both carry EAR99 export classification and share the same HTSUS code (8536.30.8000).

Q: Is the SL1021B450C available in sufficient quantity?

A: The SL1021B450C is classified as Active product status with 1432 pieces in stock, ensuring reliable supply availability compared to the Obsolete SL1024B450C.