SCHURTER 7022.0690 Ceramic Fuse 8A 500VAC Equivalent & Substitute Parts

Part Overview

The SCHURTER 7022.0690 is an 8A 500VAC ceramic cartridge fuse in the 3AB/3AG form factor (1/4" x 1-1/4"). This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system maintenance and new designs. The fuse requires a compatible holder and is designed for fast-blow response in AC/DC applications with a 10kA breaking capacity at rated voltage.

Substiute Parts

7022.0690

SCHURTER Inc.In Stock: 10497022.0690 Datasheet

Current PartRFQ

8020.5077

SCHURTER Inc.In Stock: 32878020.5077 Datasheet

Parametric EquivalentRFQ

8020.5077.G

SCHURTER Inc.In Stock: 14808020.5077.G Datasheet

Parametric EquivalentRFQ

23118000029

Littelfuse Inc.In Stock: 85923118000029 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters:

• Current Rating: 8 A (exact match required)
• Voltage Rating (AC): 500 V (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Physical Dimensions: 0.250" Dia x 1.252" L (exact match required)

All identified substitutes meet these core electrical and mechanical parameters. Differences in breaking capacity, melting I²t, approval agencies, and operating temperature ranges are secondary considerations that do not prevent functional substitution within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts meet the core electrical and mechanical specifications of the 7022.0690. Selection should be based on product availability and active status:

SCHURTER 8020.5077 and 8020.5077.G are both active products from the original manufacturer, providing direct continuity with the obsolete 7022.0690. The 8020.5077.G variant includes DC voltage rating specification (400V DC) in addition to the AC rating, offering expanded application flexibility for mixed AC/DC circuits.

Littelfuse 23118000029 is an active alternative from a different manufacturer. Physical dimensions show minor variation (0.248" Dia x 1.260" L versus 0.250" Dia x 1.252" L), remaining within typical mechanical tolerance for 3AB/3AG form factor holders. This part is suitable for applications where multi-source qualification is required.

All substitutes carry ROHS3 compliance and are suitable for the -40°C to 85°C operating range of the original part, with the Littelfuse option limited to -25°C to 70°C.

Frequently Asked Questions (FAQ)

Q: Can SCHURTER 8020.5077 directly replace the obsolete 7022.0690?

A: Yes. Both parts share identical current rating (8A), AC voltage rating (500V), fuse type (ceramic cartridge), response time (fast blow), and package dimensions (3AB/3AG, 1/4" x 1-1/4"). The 8020.5077 is an active product and is the primary equivalent.

Q: What is the difference between SCHURTER 8020.5077 and 8020.5077.G?

A: The 8020.5077.G includes a DC voltage rating specification of 400V, whereas the standard 8020.5077 does not specify DC rating. Both are electrically and mechanically identical for AC applications. Select 8020.5077.G if DC voltage rating documentation is required for your application.

Q: Are there dimensional differences between the Littelfuse 23118000029 and the SCHURTER parts?

A: The Littelfuse part measures 0.248" Dia x 1.260" L (6.30mm x 32.00mm) compared to 0.250" Dia x 1.252" L (6.35mm x 31.80mm) for SCHURTER parts. These variations are within standard mechanical tolerance for 3AB/3AG form factor holders and do not prevent physical installation.

Q: Which substitute part should I select for new designs?

A: SCHURTER 8020.5077 or 8020.5077.G are recommended for new designs, as they are from the original manufacturer and maintain full compatibility with the obsolete 7022.0690 specification. The Littelfuse 23118000029 is suitable where multi-source qualification or alternative supplier availability is required.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. All three substitute parts are ROHS3 compliant, matching the compliance status of the original 7022.0690.

Q: What is the operating temperature range for each substitute?

A: SCHURTER 8020.5077 and 8020.5077.G operate across -40°C to 85°C, matching the original part. Littelfuse 23118000029 operates across -25°C to 70°C, which is narrower. Select SCHURTER parts if full -40°C to 85°C range is required.