MARR-5-22-38 Equivalent & Substitute Parts

Part Overview

The MARR-5-22-38 is a glass body reed switch manufactured by Littelfuse, 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 through-hole axial termination. The MARR-5-22-38 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

MARR-5-22-38

LittelfuseIn Stock: 750MARR-5-22-38 Datasheet

Current PartRFQ

MVSR-20-22-38

Littelfuse Inc.In Stock: 1247MVSR-20-22-38 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MARR-5-22-38 are identified based on electrical and mechanical parameter equivalence. The critical parameters determining substitutability are:

• Circuit configuration (SPST-NO)
• Current switching ratings (350mA AC / 500mA DC minimum)
• Voltage switching ratings (265V AC / 1000V DC minimum)
• Power rating (10W minimum)
• Operate range (22 ~ 38AT)
• Physical form factor (glass body reed, through-hole axial termination)
• Operating temperature range (-75°C ~ 125°C)

The MVSR-20-22-38 meets all these criteria and is therefore classified as a direct equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The MVSR-20-22-38 is the direct equivalent substitute for the obsolete MARR-5-22-38. Both components are manufactured by Littelfuse and share identical electrical and mechanical specifications across all critical parameters. The MVSR-20-22-38 holds active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain ROHS3 compliance and identical regulatory classifications (ECCN: EAR99, HTSUS: 8536.50.9065). The MVSR-20-22-38 is suitable for direct replacement in applications currently using the MARR-5-22-38 without design modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the MVSR-20-22-38 be used as a direct replacement for the MARR-5-22-38?

A: Yes. The MVSR-20-22-38 is electrically and mechanically equivalent to the MARR-5-22-38. All switching parameters, voltage ratings, current ratings, physical dimensions, and operating temperature ranges are identical. No circuit modifications are required.

Q: What is the primary reason for substitution?

A: The MARR-5-22-38 is classified as obsolete. The MVSR-20-22-38 is an active product from the same manufacturer with identical specifications, ensuring component availability for production and field service applications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain ROHS3 compliance, identical MSL ratings (1 - Unlimited), and the same regulatory classifications (ECCN: EAR99, HTSUS: 8536.50.9065).

Q: Do the physical dimensions match exactly?

A: Yes. Both components have identical overall length (2.235" / 56.77mm), body diameter (0.105" / 2.66mm), and body length (0.775" / 19.69mm). Through-hole axial termination is identical on both parts.

Q: Are there any electrical parameter differences?

A: No. Switching current (350mA AC / 500mA DC), switching voltage (265V AC / 1000V DC), power rating (10W), operate range (22 ~ 38AT), operate time (0.75 ms), release time (0.3 ms), and DC carry current (1.3A) are identical.