HMR3500 Equivalent & Substitute Parts

Part Overview

The HMR3500 is a 3-axis digital compass module manufactured by Honeywell Aerospace, designed for heading, pitch, and roll measurement applications. This component features ±700 mGauss measuring range with 450µGauss resolution and operates across -40°C to 85°C. The HMR3500 is classified as obsolete, necessitating identification of active substitute components for new designs and ongoing system support. The module utilizes RS-232 interface communication and is supplied without external case packaging.

Substiute Parts

HMR3500

Honeywell AerospaceIn Stock: 833HMR3500 Datasheet

Current PartRFQ

HMR3300-D00-232

Honeywell AerospaceIn Stock: 1045HMR3300-D00-232 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HMR3500 is determined by the following critical parameters:

Primary Substitution Criteria:

• Manufacturer: Honeywell Aerospace (same manufacturer ensures design compatibility)
• Type: Digital Compass (functional equivalence)
• Axis Configuration: X, Y, Z (3-axis measurement capability)
• Interface: RS-232 (communication protocol compatibility)
• Package Type: Module (No Case) (physical form factor)
• Measurement Function: Heading, Pitch, and Roll (application compatibility)

Secondary Compatibility Factors:

• Measuring Range and Resolution (must support application requirements)
• Operating Temperature Range (must encompass or exceed operational environment)
• RoHS Compliance Status (regulatory alignment)

The HMR3300-D00-232 qualifies as a substitute based on matching manufacturer, type, axis configuration, interface protocol, and package format. Differences in measuring range, resolution, and operating temperature represent trade-offs that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

HMR3500 (Obsolete): This component is no longer in active production. While 821 units remain in inventory as new original stock, procurement for new designs is not recommended. The obsolete status indicates Honeywell Aerospace has transitioned support to successor models.

HMR3300-D00-232 (Active Substitute): This component is the designated active substitute, currently manufactured and supported by Honeywell Aerospace. With 1,018 units in new original inventory, this part provides continuity for applications previously using the HMR3500.

Compatibility Considerations:

The HMR3300-D00-232 maintains functional equivalence through identical 3-axis compass architecture, RS-232 interface, and module packaging. Both components are RoHS non-compliant and share the same ECCN and HTSUS classifications.

Parameter Trade-offs:

The HMR3300-D00-232 exhibits reduced measuring range (±2 Gauss versus ±700 mGauss) and coarser resolution (100µGauss, 0.1° versus 450µGauss, 0.04°). The operating temperature range is narrower (-20°C to 70°C versus -40°C to 85°C). These differences require evaluation against specific application magnetic field strength, accuracy, and thermal environment requirements.

For applications requiring the extended temperature range of the HMR3500 or its superior resolution, alternative Honeywell Aerospace compass modules outside this substitute group must be considered.

Frequently Asked Questions (FAQ)

Q: Can the HMR3300-D00-232 directly replace the HMR3500 in existing designs?

A: Direct replacement is possible from an interface and packaging perspective. Both components use RS-232 communication, feature 3-axis measurement capability, and employ identical module form factors. However, the reduced measuring range and resolution of the HMR3300-D00-232 must be verified against application requirements. The narrower operating temperature range (-20°C to 70°C) may not support systems requiring the HMR3500's -40°C to 85°C capability.

Q: What are the key differences in measurement capability?

A: The HMR3500 provides ±700 mGauss range with 450µGauss resolution and 0.04° angular resolution. The HMR3300-D00-232 offers ±2 Gauss range with 100µGauss resolution and 0.1° angular resolution. The HMR3300-D00-232 has broader magnetic field range but coarser resolution. Selection depends on whether applications require the HMR3500's finer resolution or the HMR3300-D00-232's extended magnetic field measurement capability.

Q: Are there packaging differences between these components?

A: Both the HMR3500 and HMR3300-D00-232 are supplied as modules without external case packaging. No packaging modifications are required for substitution from a physical form factor perspective.

Q: What is the significance of the obsolete status?

A: The HMR3500's obsolete classification indicates Honeywell Aerospace has discontinued production and transitioned product support to active alternatives. While existing inventory remains available, new designs should incorporate the HMR3300-D00-232 or other active Honeywell Aerospace compass modules to ensure long-term supply chain continuity and manufacturer support.

Q: Are both components RoHS compliant?

A: Neither the HMR3500 nor the HMR3300-D00-232 is RoHS compliant. Both components are classified as RoHS non-compliant. Applications subject to RoHS requirements must identify alternative compass modules with RoHS compliance certification.

Q: How do the operating temperature ranges affect substitution?

A: The HMR3500 operates from -40°C to 85°C, while the HMR3300-D00-232 operates from -20°C to 70°C. Systems requiring operation below -20°C or above 70°C cannot use the HMR3300-D00-232 as a substitute. Applications within the -20°C to 70°C window are compatible with both components from a thermal perspective.