ATQR1/10 Equivalent & Substitute Parts Reference

Part Overview

The ATQR1/10 is a 600V 1/10A CC TD fuse manufactured by Mersen USA Newburyport-MA L.L.C. This component is classified as an uncategorized fuse and maintains Active product status. The part is ROHS3 compliant and carries EAR99 export classification. Finding equivalent substitute parts is necessary to ensure supply chain continuity, optimize inventory management, and maintain design flexibility across manufacturing environments.

Substiute Parts

ATQR1/10

Mersen USA Newburyport-MA L.L.C.In Stock: 804ATQR1/10 Datasheet

Current PartRFQ

KLDR.100TXP

Littelfuse Inc.In Stock: 1171KLDR.100TXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATQR1/10 is determined by the following critical parameters:

• Voltage Rating: 600V AC minimum
• Current Rating: 100mA (1/10A)
• Fuse Class: CC (Cartridge Class)
• Response Time: Slow Blow (TD equivalent)
• Product Status: Active
• Regulatory Compliance: ROHS3 Compliant

The KLDR.100TXP from Littelfuse Inc. qualifies as a direct substitute based on matching voltage ratings (600 VAC), identical current rating (100mA), CC class designation, and slow blow response time. Both parts share the same HTSUS classification and maintain ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Both the ATQR1/10 and KLDR.100TXP maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The KLDR.100TXP carries additional third-party certifications (CE, CSA, UL) and specifies DC voltage capability (300 VDC), providing expanded application flexibility. Selection between these parts should be based on specific application requirements, existing supply chain relationships, and packaging format preferences (Box versus Bulk).

Frequently Asked Questions (FAQ)

Q: Can KLDR.100TXP directly replace ATQR1/10 in all applications?

A: Yes, provided the application operates within the specified parameters. Both parts share identical AC voltage ratings (600V), current ratings (100mA), fuse class (CC), and response time characteristics (slow blow). The KLDR.100TXP offers additional DC voltage capability (300 VDC), which does not restrict its use in AC-only applications.

Q: What is the significance of the CC fuse class designation?

A: CC (Cartridge Class) designates the physical form factor and breaking capacity characteristics of the fuse. Both parts conform to this classification, ensuring mechanical and electrical compatibility within CC-rated fuse holders.

Q: Does packaging format affect electrical performance?

A: No. The ATQR1/10 is supplied in Box packaging while KLDR.100TXP is supplied in Bulk packaging. Packaging format affects logistics and inventory management only, not electrical or mechanical performance.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and carry EAR99 export classification. The KLDR.100TXP includes documented CE, CSA, and UL approvals, while the ATQR1/10 approval agencies are not specified in available documentation.

Q: What does the TD designation mean on the ATQR1/10?

A: TD indicates Time Delay response, equivalent to Slow Blow fuse characteristics. This allows the fuse to tolerate temporary inrush currents without nuisance operation while providing protection against sustained overcurrent conditions.