SPK0833LM4H-T Audio Microphone Equivalent & Substitute Parts

Part Overview

The SPK0833LM4H-T is an audio microphone manufactured by Knowles, currently in Active product status. This component is used in applications requiring audio signal acquisition and conversion. Substitute parts may be necessary due to inventory availability, design optimization requirements, or end-of-life considerations for related product lines. The identification of equivalent components ensures design flexibility and supply chain continuity while maintaining functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	SPK0833LM4H-T
Manufacturer	Knowles
Category	Audio Microphone
Product Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS Code	8518.10.8030
Inventory Status	1075 Pcs New Original In Stock

Substitute Part Grouping Explanation

Substitute parts for the SPK0833LM4H-T are identified based on the following criteria established by the manufacturer's specifications:

Primary Substitution Criteria:

Manufacturer: Knowles
ECCN Classification: EAR99
HTSUS Code: 8518.10.8030
Moisture Sensitivity Level: 1 (Unlimited)
Product Category: Microphone

The substitute parts SPH0641LM4H-1 and SPH0644LM4H-1 share identical regulatory classifications, moisture sensitivity ratings, and tariff codes. Both are MEMS silicon microphones from the Knowles product portfolio with solder pad termination and rectangular form factors. These components operate within compatible voltage ranges and supply current specifications suitable for audio microphone applications.

Parameter Comparison

Parameter	SPK0833LM4H-T	SPH0641LM4H-1	SPH0644LM4H-1
Manufacturer	Knowles	Knowles	Knowles
Type	Audio Microphone	MEMS (Silicon)	MEMS (Silicon)
Output Type	Not Specified	Digital, PDM	Digital, PDM
Direction	Not Specified	Omnidirectional	Omnidirectional
Frequency Range	Not Specified	45 Hz ~ 14.5 kHz	20 Hz ~ 10 kHz
Sensitivity	Not Specified	-26dB ±1dB @ 94dB SPL	-37dB ±1dB @ 94dB SPL
Voltage Range	Not Specified	1.6 V ~ 3.6 V	1.6 V ~ 3.6 V
Size / Dimension	Not Specified	0.138" L x 0.104" W (3.50mm x 2.65mm)	0.138" L x 0.104" W (3.50mm x 2.65mm)
Height (Max)	Not Specified	0.043" (1.08mm)	0.043" (1.08mm)
Termination	Not Specified	Solder Pads	Solder Pads
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99
HTSUS Code	8518.10.8030	8518.10.8030	8518.10.8030
Product Status	Active	Active	Not For New Designs

Engineering Selection Recommendations

SPH0641LM4H-1 Substitution: This part maintains Active product status and shares all regulatory and compliance classifications with the SPK0833LM4H-T. The SPH0641LM4H-1 is suitable for applications requiring digital PDM output with omnidirectional pickup patterns. Inventory availability is substantial at 29,258 units. This component is appropriate for new design implementations.

SPH0644LM4H-1 Substitution: This part carries a "Not For New Designs" product status designation. While it shares identical regulatory classifications, MSL ratings, and physical dimensions with the main part, its discontinued design status restricts its application to legacy system support or existing production continuity only. Current inventory of 40,628 units is available. This component should not be selected for new design initiatives.

Both substitute parts comply with ROHS3 standards and maintain the same moisture sensitivity rating as the SPK0833LM4H-T, ensuring equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the SPK0833LM4H-T?

A: Substitution eligibility is based on matching manufacturer (Knowles), regulatory classifications (ECCN: EAR99, HTSUS: 8518.10.8030), moisture sensitivity level (MSL 1), and physical form factor compatibility. Both substitute parts meet these criteria.

Q: Can SPH0644LM4H-1 be used in new product designs?

A: No. The SPH0644LM4H-1 carries a "Not For New Designs" product status. This part is restricted to legacy system support and existing production continuity only. The SPH0641LM4H-1 is the appropriate choice for new design implementations.

Q: Are the substitute parts physically compatible with the SPK0833LM4H-T?

A: Both SPH0641LM4H-1 and SPH0644LM4H-1 share identical dimensions (0.138" L x 0.104" W / 3.50mm x 2.65mm) and maximum height (0.043" / 1.08mm). Both use solder pad termination. Physical compatibility is confirmed for PCB layout purposes.

Q: What is the difference in electrical specifications between the substitute parts?

A: SPH0641LM4H-1 operates at -26dB sensitivity with a frequency range of 45 Hz to 14.5 kHz and 700 µA supply current. SPH0644LM4H-1 operates at -37dB sensitivity with a frequency range of 20 Hz to 10 kHz and 1.4 mA supply current. Both support 1.6 V to 3.6 V operating voltage range.

Q: Do the substitute parts require different handling procedures?

A: No. All three parts maintain MSL 1 (Unlimited) rating, indicating identical moisture sensitivity and storage requirements. Standard handling procedures for MSL 1 components apply uniformly.

Q: What packaging options are available for substitute parts?

A: SPH0644LM4H-1 is available in Tape & Reel (TR) packaging. SPH0641LM4H-1 packaging specification is not provided in the available data.

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