MRMS201A Equivalent & Substitute Parts

Part Overview

The MRMS201A is a magnetoresistive digital switch sensor manufactured by Murata Electronics, designed for unipolar switching applications with a 3-MM package form factor. This component operates as a push-pull output device with a sensing range of 3mT trip and 0.2mT release, suitable for applications requiring magnetic field detection in the -40°C to 85°C temperature range.

The MRMS201A is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems currently utilizing this component.

Substiute Parts

MRMS201A

Murata ElectronicsIn Stock: 6769MRMS201A Datasheet

Current PartRFQ

MRMS201A-001

Murata ElectronicsIn Stock: 16523MRMS201A-001 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MRMS201A is determined by the following critical parameters:

• Manufacturer & Base Product Line: Both the main part and substitute must originate from Murata Electronics within the MRMS2 base product family to ensure design compatibility and performance consistency.
• Package & Mounting: Identical 3-MM supplier device package and TO-236-3/SC-59/SOT-23-3 case format with surface mount technology ensures mechanical and electrical compatibility.
• Voltage Supply Range: The substitute must operate within the 1.6V to 4.6V supply voltage window to function in existing circuit designs.
• Current Specifications: Maximum supply current of 12µA must be maintained to preserve power consumption characteristics.
• Operating Temperature Range: The -40°C to 85°C operating window must be supported by the substitute.
• Technology Platform: Magnetoresistive technology is required to maintain the sensing principle and application compatibility.

The MRMS201A-001 qualifies as a direct substitute based on these parameters. While the MRMS201A-001 operates as a latch function (versus unipolar switch) and supports dual polarization (North and South Pole), it maintains all critical electrical and mechanical compatibility requirements. The sensing range differs (2.5mT trip / 0.5mT release versus 3mT / 0.2mT), which represents a functional variation that must be evaluated within the specific application context.

Parameter Comparison

Engineering Selection Recommendations

The MRMS201A-001 is the designated substitute for the obsolete MRMS201A. Selection of this substitute is supported by the following engineering criteria:

Product Status & Availability: The MRMS201A is obsolete with no ongoing manufacturing. The MRMS201A-001 maintains active product status with confirmed inventory availability (16,462 pcs in stock), ensuring reliable supply chain access for new production and field replacements.

Compliance & Regulatory Status: Both parts maintain identical REACH compliance status (REACH Unaffected) and ECCN classification (EAR99). The MRMS201A-001 achieves RoHS3 compliance, providing enhanced environmental and regulatory alignment for modern manufacturing standards.

Electrical & Mechanical Compatibility: The substitute maintains identical voltage supply range (1.6V – 4.6V), maximum supply current (12µA), operating temperature range (-40°C to 85°C), and physical package format (TO-236-3/SC-59/SOT-23-3 in 3-MM configuration). These parameters ensure direct compatibility with existing PCB layouts and circuit designs.

Functional Differences: The MRMS201A-001 operates as a latch function with dual polarization capability, compared to the unipolar switch function of the original part. The sensing range differs at 2.5mT trip and 0.5mT release versus 3mT trip and 0.2mT release. These functional variations require application-level evaluation to confirm suitability for the intended magnetic field detection requirements.

Frequently Asked Questions (FAQ)

Q: Can the MRMS201A-001 be used as a direct pin-for-pin replacement?

A: Yes, the MRMS201A-001 is mechanically and electrically compatible with the MRMS201A. Both components share identical package format (TO-236-3/SC-59/SOT-23-3), supply voltage range (1.6V – 4.6V), and operating temperature specifications (-40°C to 85°C). PCB layout and footprint compatibility is maintained.

Q: What are the functional differences between these parts?

A: The MRMS201A operates as a unipolar switch with South Pole polarization and a sensing range of 3mT trip / 0.2mT release. The MRMS201A-001 operates as a latch with dual polarization (North and South Pole) and a sensing range of 2.5mT trip / 0.5mT release. The latch function maintains state until a reverse magnetic field is applied, whereas the unipolar switch responds directly to magnetic field presence.

Q: Are there packaging differences between these parts?

A: The MRMS201A is supplied in bulk packaging, while the MRMS201A-001 is supplied in Tape & Reel (TR) format. Both use the same 3-MM supplier device package and are compatible with standard surface mount assembly equipment.

Q: What is the compliance status of the MRMS201A-001?

A: The MRMS201A-001 is RoHS3 compliant and maintains REACH unaffected status. Both parts share identical ECCN classification (EAR99) and HTSUS code (8536.41.0030).

Q: How do the sensing ranges differ, and does this affect substitution?

A: The MRMS201A-001 has a lower trip threshold (2.5mT versus 3mT) and higher release threshold (0.5mT versus 0.2mT). This represents a narrower hysteresis window. Application-specific magnetic field strength and switching behavior requirements must be evaluated to confirm the MRMS201A-001 is suitable for the intended use case.

Q: Is the MRMS201A-001 available in inventory?

A: Yes, the MRMS201A-001 is in active production status with 16,462 pcs confirmed in stock, providing reliable availability for production and replacement applications.