SPM0404UD5 Equivalent & Substitute Parts

Part Overview

The SPM0404UD5 is an ultrasonic sensor manufactured by Knowles, operating in the 10 kHz to 65 kHz frequency range with a rated voltage of 1.5 V to 3.6 V. This receiver-type sensor is designed for ultrasonic detection applications requiring sensitivity across the specified frequency band. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SPM0404UD5

KnowlesIn Stock: 1056SPM0404UD5 Datasheet

Current PartRFQ

SPU0410LR5H-QB

KnowlesIn Stock: 17502SPU0410LR5H-QB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPM0404UD5 is based on the following critical parameters:

• Voltage Compatibility: The substitute must operate within the 1.5 V to 3.6 V range to ensure direct integration into existing power supply designs.
• Frequency Coverage: The substitute must support the 10 kHz to 65 kHz operating band or provide overlapping coverage within this range.
• Series Alignment: Both the main part and substitute belong to the Knowles SiSonic™ product family, ensuring design consistency and performance characteristics.
• Regulatory Compliance: Both components maintain REACH Unaffected status and EAR99 classification, ensuring no additional compliance barriers for substitution.

The SPU0410LR5H-QB qualifies as a substitute based on voltage range compatibility (1.5 V ~ 3.6 V) and extended frequency coverage (100 Hz ~ 80 kHz), which encompasses the original 10 kHz to 65 kHz specification. Both components are manufactured by Knowles within the SiSonic™ series.

Parameter Comparison

Engineering Selection Recommendations

The SPU0410LR5H-QB is an active product with current manufacturing support from Knowles, providing supply chain continuity for applications previously using the obsolete SPM0404UD5. Both components maintain identical voltage operating ranges and regulatory compliance classifications (REACH Unaffected, EAR99).

The substitute component offers extended frequency coverage (100 Hz ~ 80 kHz) compared to the original specification (10 kHz ~ 65 kHz), ensuring full compatibility with the original frequency band while providing additional bandwidth capability. Both components are part of the Knowles SiSonic™ family, maintaining design consistency.

Selection of the SPU0410LR5H-QB eliminates obsolescence risk while maintaining regulatory and electrical compatibility with existing system designs.

Frequently Asked Questions (FAQ)

Q: Can the SPU0410LR5H-QB directly replace the SPM0404UD5 in existing designs?

A: Yes. Both components operate within the identical 1.5 V to 3.6 V voltage range and maintain the same regulatory compliance status (REACH Unaffected, EAR99). The substitute's frequency range (100 Hz ~ 80 kHz) fully encompasses the original specification (10 kHz ~ 65 kHz).

Q: What is the primary reason for substitution?

A: The SPM0404UD5 is obsolete. The SPU0410LR5H-QB is an active product with ongoing manufacturing support from Knowles, ensuring long-term component availability.

Q: Are there packaging differences between these components?

A: The SPM0404UD5 packaging is specified as "-" in the provided data. The SPU0410LR5H-QB is supplied in Cut Tape (CT) and Digi-Reel® packaging formats. Packaging compatibility should be evaluated based on specific assembly requirements.

Q: Do both components share the same series designation?

A: Both components are part of the Knowles SiSonic™ family. The SPM0404UD5 belongs to the base SiSonic™ series, while the SPU0410LR5H-QB is designated as SiSonic™ SPU, indicating a microphone variant within the same product family.

Q: What compliance certifications apply to both components?

A: Both the SPM0404UD5 and SPU0410LR5H-QB maintain REACH Unaffected status and EAR99 export classification, ensuring no additional regulatory barriers for substitution.