HMR3601 Equivalent & Substitute Parts

Part Overview

The HMR3601 is a digital magnetometer manufactured by Honeywell Aerospace, designed for compass applications requiring three-axis magnetic field measurement. This component measures heading, pitch, and roll with a measuring range of ±0.9 Gauss and resolution of 150µGauss, 0.15°, and 0.2° across X, Y, and Z axes. The HMR3601 is part of the µPOINT® series and is currently classified as obsolete. Due to its discontinued status, equivalent substitute parts are necessary for new designs and ongoing production requirements.

Substiute Parts

HMR3601

Honeywell AerospaceIn Stock: 1062HMR3601 Datasheet

Current PartRFQ

HMC6343

Honeywell AerospaceIn Stock: 1605HMC6343 Datasheet

SimilarRFQ

HMR3300

Honeywell AerospaceIn Stock: 1157HMR3300 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the HMR3601 is determined by the following critical parameters:

Primary Substitution Criteria:

• Three-axis (X, Y, Z) magnetic field measurement capability
• Digital compass functionality for heading, pitch, and roll measurement
• Measuring range compatibility (HMR3601: ±0.9 Gauss)
• Resolution specifications (HMR3601: 150µGauss, 0.15°, 0.2°)
• Serial or equivalent digital interface
• RoHS compliance status
• Moisture sensitivity level (MSL) rating

Substitute Parts Identified:

1. HMC6343 – Active product with enhanced measuring range (±2 Gauss), improved resolution (0.1°), I2C interface, 36-LCC package
2. HMR3300 – Active product with extended measuring range (±2 Gauss, ±60°), comparable resolution (100µGauss, 0.1°), UART/SPI interface, module package

Both substitute parts maintain three-axis measurement capability and are manufactured by Honeywell Aerospace within the magnetic sensor category.

Parameter Comparison

Engineering Selection Recommendations

HMC6343 Selection Criteria:

• Active product status ensures long-term availability and supply chain stability
• ROHS3 compliance meets current environmental regulations
• Extended measuring range (±2 Gauss) provides broader application flexibility compared to HMR3601 (±0.9 Gauss)
• Improved angular resolution (0.1°) exceeds HMR3601 specifications (0.15°, 0.2°)
• I2C interface requires circuit redesign from original Serial interface
• 36-LCC package differs from 3-SMD Module, necessitating PCB layout modifications
• MSL rating of 3 (168 Hours) requires controlled moisture handling during assembly

HMR3300 Selection Criteria:

• Active product status with established production history
• MSL rating of 1 (Unlimited) matches HMR3601 moisture sensitivity requirements
• Extended measuring range (±2 Gauss, ±60°) provides enhanced measurement capability
• Resolution (100µGauss, 0.1°) is comparable to HMR3601 specifications
• UART and SPI interface options provide flexibility; UART is compatible with original Serial interface concept
• Module (No Case) package maintains form factor similarity to 3-SMD Module
• RoHS non-compliance status may restrict use in applications with environmental compliance mandates

Compliance Considerations:

• HMC6343 is recommended for applications requiring RoHS3 compliance
• HMR3300 is suitable for applications where RoHS compliance is not mandatory
• Both parts maintain the same HTSUS classification (9014.10.9000) and ECCN category as HMR3601

Frequently Asked Questions (FAQ)

Q: Can HMC6343 directly replace HMR3601 without circuit modifications?

A: No. While both are three-axis digital compass sensors, the HMC6343 uses I2C interface versus the HMR3601's Serial interface. Additionally, the package type differs (36-LCC versus 3-SMD Module), requiring PCB layout redesign and firmware updates to accommodate the new communication protocol.

Q: What is the primary advantage of HMR3300 over HMC6343 for HMR3601 substitution?

A: The HMR3300 maintains MSL rating 1 (Unlimited) identical to HMR3601, whereas HMC6343 has MSL rating 3 (168 Hours). For applications with stringent moisture sensitivity requirements or high-volume assembly processes, HMR3300 eliminates the need for specialized moisture control procedures. Additionally, HMR3300 offers UART interface compatibility with the original Serial interface concept.

Q: Are there operating temperature limitations when substituting HMR3601?

A: Yes. HMR3601 operating temperature is not specified in available documentation. HMC6343 operates from -40°C to 85°C, and HMR3300 operates from -20°C to 70°C. Applications requiring operation outside the HMR3300 temperature range should select HMC6343. Verify your application's temperature requirements against substitute part specifications.

Q: How does the measuring range difference affect substitution suitability?

A: HMR3601 has a measuring range of ±0.9 Gauss, while both HMC6343 and HMR3300 have ±2 Gauss range. The wider range in substitute parts accommodates stronger magnetic field environments without saturation. For applications operating within ±0.9 Gauss, both substitutes function correctly with improved headroom. Applications requiring measurement precision at the lower end of the range should verify that the substitute's resolution (0.1° or 100µGauss) meets accuracy requirements.

Q: What package considerations apply when selecting a substitute?

A: HMR3601 uses a 3-SMD Module package. HMC6343 uses 36-LCC (Leadless Chip Carrier), requiring different PCB footprint and assembly process. HMR3300 uses Module (No Case) format, maintaining closer physical similarity to HMR3601. Package selection impacts PCB design, assembly compatibility, and thermal management. Verify PCB layout compatibility and assembly equipment capability before final selection.

Q: Does resolution improvement in substitute parts affect system calibration?

A: HMC6343 and HMR3300 offer improved angular resolution (0.1°) compared to HMR3601 (0.15°, 0.2°). Enhanced resolution does not require recalibration but may improve measurement accuracy in applications sensitive to small angular variations. Firmware and software must be verified to properly utilize the improved resolution specifications of substitute parts.