WM-63PRT Equivalent & Substitute Parts

Part Overview

The WM-63PRT is an electret condenser microphone manufactured by Panasonic Electronic Components, designed for analog audio applications requiring omnidirectional pickup in the 40 Hz to 9 kHz frequency range. This component operates across a 2 V to 10 V supply range with a sensitivity of -44dB ±3dB at 94dB SPL. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support, design updates, and production continuity.

Substiute Parts

WM-63PRT

Panasonic Electronic ComponentsIn Stock: 875WM-63PRT Datasheet

Current PartRFQ

POM-1345P-C3310-R

PUI Audio, Inc.In Stock: 2702POM-1345P-C3310-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the WM-63PRT are identified based on the following critical parameters that determine functional compatibility:

Electrical Compatibility Parameters:

• Microphone type: Electret Condenser
• Output configuration: Analog
• Directional pattern: Omnidirectional
• Impedance: 2.2 kOhms
• Voltage range: 2 V ~ 10 V
• Supply current: 500 µA

Mechanical Compatibility Parameters:

• Termination style: PC Pins
• Physical diameter: 0.236" (6.00mm)
• Port location: Top

Performance Parameters:

• Frequency range: 40 Hz ~ 9 kHz minimum coverage
• Sensitivity: Within ±5dB of -44dB specification
• Signal-to-noise ratio: 55dB minimum

The POM-1345P-C3310-R from PUI Audio, Inc. meets all critical electrical and mechanical compatibility criteria, with sensitivity variation within acceptable engineering tolerances for this component category.

Parameter Comparison

Engineering Selection Recommendations

The POM-1345P-C3310-R is a direct functional substitute for the obsolete WM-63PRT. Selection is supported by the following engineering factors:

Electrical Compatibility: Both components operate identically across the 2 V to 10 V supply range with matching impedance (2.2 kOhms) and current draw (500 µA). Sensitivity values differ by 1dB nominal (-44dB vs. -45dB), which is within standard microphone tolerance specifications and does not require circuit redesign.

Mechanical Compatibility: Identical termination (PC Pins), diameter (0.236" / 6.00mm), and port location (Top) ensure direct physical substitution without PCB layout modification. Height difference (0.051" vs. 0.071") must be verified against available board clearance in the target application.

Product Status & Compliance: The POM-1345P-C3310-R is an active product with ROHS3 compliance and REACH unaffected status, providing supply chain continuity and regulatory alignment for new designs and production updates.

Availability: The substitute part maintains higher inventory levels (2655 Pcs vs. 861 Pcs), supporting both immediate replacement needs and future production requirements.

Frequently Asked Questions (FAQ)

Q: Can the POM-1345P-C3310-R replace the WM-63PRT without circuit modifications?

A: Yes. Both components share identical electrical specifications (voltage range, impedance, supply current) and mechanical interfaces (PC Pins termination, 6.00mm diameter). The 1dB sensitivity difference (-44dB vs. -45dB) is within standard microphone tolerance and does not require amplifier or signal conditioning changes.

Q: What is the impact of the height difference between these components?

A: The substitute part is 0.020" (0.50mm) taller (0.071" vs. 0.051"). Verify that the target PCB assembly has sufficient clearance above the microphone mounting location. If clearance is limited, mechanical redesign or component repositioning may be necessary.

Q: Are there any compliance or regulatory differences?

A: The substitute part (POM-1345P-C3310-R) carries ROHS3 compliance certification, which the original part data does not specify. Both components share identical MSL ratings (1 - Unlimited) and ECCN classification (EAR99). The substitute's active product status ensures ongoing regulatory support.

Q: What is the signal-to-noise ratio difference, and does it affect system performance?

A: The substitute has a 3dB lower S/N ratio (55dB vs. 58dB). This represents a minor performance difference typical in component substitution. Evaluate against your application's noise floor requirements; for most consumer and industrial audio applications, this difference is not perceptible.

Q: Can I use the substitute in new designs, or only for legacy system replacement?

A: The POM-1345P-C3310-R is an active product suitable for both legacy system replacement and new design implementation. Its active status and compliance certifications make it appropriate for production designs requiring long-term supply chain stability.