MB6027ASC-1L Equivalent & Substitute Parts

Part Overview

The MB6027ASC-1L is an electret condenser microphone manufactured by Knowles, designed for analog audio capture applications requiring omnidirectional pickup. This component features a 0.236" diameter circular form factor with solder pad termination and operates across a 2V to 10V supply range. The product is currently obsolete, making equivalent substitute parts necessary for ongoing design support, maintenance, and new production requirements where compatible alternatives are available.

Substiute Parts

MB6027ASC-1L

KnowlesIn Stock: 824MB6027ASC-1L Datasheet

Current PartRFQ

CMC-2742PBJ-A

CUI DevicesIn Stock: 18966CMC-2742PBJ-A Datasheet

MFR RecommendedRFQ

POM-2742L-2-R

PUI Audio, Inc.In Stock: 1307POM-2742L-2-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MB6027ASC-1L are qualified based on the following core electrical and mechanical parameters:

Critical Matching Parameters:

• Microphone type: Electret Condenser
• Output configuration: Analog
• Directional pattern: Omnidirectional
• Sensitivity: -42dB ±3dB @ 94dB SPL
• Impedance: 2.2 kOhms
• Voltage range: 2 V ~ 10 V (minimum overlap required)
• Physical form factor: 0.236" diameter circular
• Port location: Top

Allowable Variations:

• Frequency range: Extended ranges are acceptable if minimum 100 Hz lower bound is maintained
• Current consumption: Variations within typical operating margins
• Termination type: Solder pads or PC pins (both compatible with standard PCB assembly)
• Height: Minor variations acceptable within mechanical envelope constraints
• S/N ratio: Variations acceptable if sensitivity specification is maintained

Two substitute parts meet these criteria: CMC-2742PBJ-A (CUI Devices) and POM-2742L-2-R (PUI Audio, Inc.).

Parameter Comparison

Engineering Selection Recommendations

CMC-2742PBJ-A (CUI Devices) is an active product with extended frequency response (100 Hz ~ 20 kHz) and lower supply current (400 µA). This part maintains identical sensitivity, impedance, and voltage specifications. The primary design consideration is termination type: CMC-2742PBJ-A uses PC pins rather than solder pads, requiring PCB footprint modification. CUI Devices maintains active product support and RoHS3 compliance certification.

POM-2742L-2-R (PUI Audio, Inc.) is an active product with extended lower frequency response (30 Hz ~ 15 kHz) and maintains solder pad termination matching the original design. This part preserves the original termination interface, minimizing PCB redesign requirements. Height specification is 0.126" (3.20mm) versus the original 0.114" (2.90mm), requiring mechanical envelope verification. PUI Audio maintains active product support and RoHS3 compliance certification.

Both substitutes are REACH Unaffected and classified under ECCN EAR99 and HTSUS 8518.10.8030, matching the original part's regulatory classification.

Frequently Asked Questions (FAQ)

Q: Can CMC-2742PBJ-A replace MB6027ASC-1L directly on existing PCBs?

A: CMC-2742PBJ-A uses PC pins instead of solder pads. Direct PCB replacement requires footprint modification. The electrical specifications are compatible; mechanical integration requires design review.

Q: What is the primary difference between the two substitute options?

A: CMC-2742PBJ-A offers extended frequency response (to 20 kHz) with PC pin termination and lower current draw (400 µA). POM-2742L-2-R maintains solder pad termination with extended lower frequency response (to 30 Hz) and identical current specification (500 µA).

Q: Are both substitute parts currently available?

A: Yes. CMC-2742PBJ-A has 18,928 units in stock. POM-2742L-2-R has 1,216 units in stock. Both manufacturers maintain active product status.

Q: Does the height difference of POM-2742L-2-R affect compatibility?

A: POM-2742L-2-R maximum height is 0.126" (3.20mm) versus the original 0.114" (2.90mm). Mechanical envelope clearance must be verified for applications with height constraints.

Q: Are the sensitivity specifications identical across all three parts?

A: MB6027ASC-1L and CMC-2742PBJ-A specify -42dB ±3dB @ 94dB SPL. POM-2742L-2-R specifies -42dB ±3dB without SPL reference. All three maintain equivalent sensitivity performance within stated tolerances.

Q: What compliance certifications apply to the substitute parts?

A: Both CMC-2742PBJ-A and POM-2742L-2-R are RoHS3 compliant, REACH Unaffected, and classified as ECCN EAR99 and HTSUS 8518.10.8030, matching the original part's regulatory status.