MARR-5-22-33 Equivalent & Substitute Parts

Part Overview

The MARR-5-22-33 is a glass body reed switch manufactured by Littelfuse Inc., configured as a SPST-NO (Single Pole Single Throw - Normally Open) device. This component is rated for 350mA AC / 500mA DC switching at 265V AC and 1000V DC, with a 10W power rating and 22–33AT operate range. The part is classified as obsolete, making identification of active equivalent components essential for ongoing system support and new design implementations.

Substiute Parts

MARR-5-22-33

Littelfuse Inc.In Stock: 792MARR-5-22-33 Datasheet

Current PartRFQ

MVSR-20-22-33

Littelfuse Inc.In Stock: 2200MVSR-20-22-33 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete MARR-5-22-33 is based on electrical and mechanical parameter equivalence. The MVSR-20-22-33 qualifies as a direct substitute because it maintains identical specifications across all critical switching parameters: SPST-NO circuit configuration, 22–33AT operate range, 350mA AC / 500mA DC switching current, 265V AC / 1000V DC switching voltage, 10W power rating, and matching timing characteristics (0.75ms operate time, 0.3ms release time). Physical dimensions, mounting type (through hole), termination style (axial), and operating temperature range are identical. The substitute part is manufactured by the same supplier (Littelfuse Inc.) and carries active product status with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

The MVSR-20-22-33 is the direct equivalent for the obsolete MARR-5-22-33. Selection of the MVSR-20-22-33 is supported by its active product status, ensuring availability for current procurement and future replenishment. Both components carry identical ROHS3 compliance and EAR99 export classification, maintaining regulatory and trade compliance. The substitute part is available in bulk packaging with confirmed inventory levels, supporting both prototype and production-volume requirements. No electrical or mechanical redesign is required for component substitution.

Frequently Asked Questions (FAQ)

Q: Can the MVSR-20-22-33 be used as a direct replacement for the MARR-5-22-33 in existing designs?

A: Yes. The MVSR-20-22-33 maintains identical electrical specifications (350mA AC / 500mA DC switching current, 265V AC / 1000V DC switching voltage, 10W power rating), mechanical dimensions (2.235" overall length, 0.105" diameter body), and timing characteristics (0.75ms operate time, 0.3ms release time). Through-hole mounting and axial termination are identical, requiring no PCB redesign.

Q: What is the primary reason for substitution?

A: The MARR-5-22-33 is classified as obsolete. The MVSR-20-22-33 is an active product from the same manufacturer, ensuring long-term supply continuity and regulatory compliance.

Q: Are there packaging differences between the two parts?

A: The MARR-5-22-33 was supplied with standard packaging. The MVSR-20-22-33 is available in bulk packaging. Both parts are identical in form, fit, and function.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the MARR-5-22-33 and MVSR-20-22-33 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and EAR99 export classification.

Q: What is the operate range specification, and does it differ between the two parts?

A: Both parts operate in the 22–33AT (Ampere-Turn) range, which defines the magnetic field strength required to activate the reed switch. This specification is identical for both components.