HMR3200 Equivalent & Substitute Parts

Part Overview

The HMR3200 is a digital compass module manufactured by Honeywell Aerospace, designed for heading measurement applications. This component features a 2-axis (X, Y) magnetic sensing capability with a measuring range of ±2 Gauss and 100µGauss resolution. The module operates via UART and SPI interfaces across a temperature range of -40°C to 85°C.

The HMR3200 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support ongoing production or maintenance requirements for applications currently utilizing this component.

Substiute Parts

HMR3200

Honeywell AerospaceIn Stock: 1043HMR3200 Datasheet

Current PartRFQ

HMC6343

Honeywell AerospaceIn Stock: 1605HMC6343 Datasheet

SimilarRFQ

HMR3300

Honeywell AerospaceIn Stock: 1157HMR3300 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HMR3200 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Measuring range of ±2 Gauss (magnetic field detection capability)
• Digital compass functionality for heading measurement
• UART and/or SPI interface support
• Operating temperature range compatibility or overlap with -40°C ~ 85°C
• Module form factor or equivalent packaging

Substitution Logic:

The HMR3200 accepts substitutes that maintain the core magnetic sensing range (±2 Gauss) and support heading measurement. Substitutes may extend functionality (additional axes, pitch/roll measurement) or modify interface protocols, provided the application requirements permit such changes. Temperature range variations are acceptable if the substitute's operating range encompasses the application's actual operating conditions.

Two substitute parts meet these criteria:

1. HMC6343 - Extends to 3-axis sensing with enhanced resolution (0.1°), different interface (I2C), and different package (36-LCC). Active product status.

2. HMR3300 - Extends to 3-axis sensing with same interface options (UART, SPI), same resolution format (100µGauss, 0.1°), and same module packaging. Active product status.

Parameter Comparison

Engineering Selection Recommendations

HMR3300 Selection Criteria:

The HMR3300 is the primary substitute for direct replacement applications. This part maintains identical interface protocols (UART, SPI), identical packaging (Module, No Case), and identical resolution specifications (100µGauss, 0.1°). The HMR3300 extends functionality to 3-axis measurement (X, Y, Z) and supports pitch and roll measurement in addition to heading.

The HMR3300 is an active product with current manufacturing support. However, the operating temperature range is reduced to -20°C ~ 70°C compared to the HMR3200's -40°C ~ 85°C. This substitution is valid only for applications operating within the -20°C ~ 70°C window.

Both parts maintain RoHS non-compliant status and MSL Level 1 rating, ensuring consistency in supply chain handling and environmental compliance posture.

HMC6343 Selection Criteria:

The HMC6343 is an alternative substitute for applications where interface protocol change is acceptable. This part maintains the ±2 Gauss measuring range and identical operating temperature range (-40°C ~ 85°C). The HMC6343 operates via I2C interface instead of UART/SPI and is packaged in 36-LCC form factor instead of module format.

The HMC6343 is an active product with ROHS3 compliance, offering improved environmental compliance compared to the HMR3200. The MSL rating is Level 3 (168 Hours), requiring more stringent moisture control during handling and storage.

Selection of HMC6343 requires system-level interface redesign to accommodate I2C protocol and PCB layout modification for 36-LCC package integration.

Frequently Asked Questions (FAQ)

Q: Can the HMR3300 directly replace the HMR3200 without firmware changes?

A: The HMR3300 maintains UART and SPI interface compatibility with the HMR3200. However, the HMR3300 provides additional Z-axis data and pitch/roll measurement outputs. Firmware integration must account for these additional data channels. Interface protocol compatibility does not guarantee plug-and-play operation; application software must be evaluated for compatibility with the extended output format.

Q: What is the primary limitation when substituting HMR3300 for HMR3200?

A: The operating temperature range is the primary constraint. The HMR3300 operates from -20°C to 70°C, while the HMR3200 operates from -40°C to 85°C. Applications requiring operation below -20°C or above 70°C cannot use the HMR3300 as a substitute.

Q: Why does the HMC6343 require interface redesign?

A: The HMC6343 uses I2C communication protocol, whereas the HMR3200 uses UART and SPI. I2C is a two-wire serial bus protocol fundamentally different from UART (asynchronous serial) and SPI (synchronous serial). System firmware, driver software, and PCB routing must be redesigned to support I2C communication. Additionally, the 36-LCC package requires different PCB footprint and layout considerations compared to the module form factor.

Q: Are there inventory considerations for these substitutes?

A: The HMR3200 has 1003 pieces in stock (obsolete status). The HMR3300 has 1075 pieces in stock (active status). The HMC6343 has 1552 pieces in stock (active status). For long-term supply assurance, active products (HMR3300, HMC6343) are preferable to obsolete inventory.

Q: What is the difference between 100µGauss and 0.1° resolution?

A: 100µGauss is a magnetic field strength resolution specification, indicating the smallest detectable change in magnetic field magnitude. 0.1° is an angular resolution specification, indicating the smallest detectable change in heading angle. The HMR3300 provides both specifications; the HMC6343 provides only angular resolution (0.1°). Resolution type selection depends on application requirements for either raw magnetic field data or processed heading angle data.

Q: Can the HMR3200 be used in new designs?

A: The HMR3200 is classified as obsolete. Honeywell Aerospace no longer manufactures this component. New designs should not incorporate the HMR3200. Existing designs currently using the HMR3200 should transition to either HMR3300 or HMC6343 based on the specific application requirements outlined in this document.