PUM-3546L Equivalent & Substitute Parts

Part Overview

The PUM-3546L is an analog electret condenser microphone manufactured by PUI Audio, Inc., designed for unidirectional audio capture with a sensitivity of -46dB ±3dB. This component features a compact circular form factor (0.236" diameter) with solder pad termination, operating across a 2V to 10V supply range. The PUM-3546L is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

PUM-3546L

PUI Audio, Inc.In Stock: 1050PUM-3546L Datasheet

Current PartRFQ

PUM-3546L-R

PUI Audio, Inc.In Stock: 5603PUM-3546L-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PUM-3546L is determined by strict equivalence across the following critical parameters:

• Microphone type: Electret Condenser
• Output configuration: Analog
• Directional pattern: Unidirectional
• Sensitivity specification: -46dB ±3dB
• Signal-to-noise ratio: 55dB
• Impedance: 2.2 kOhms
• Operating voltage range: 2V ~ 10V
• Supply current: 500 µA
• Physical form factor: Circular, 0.236" diameter, 0.146" maximum height
• Termination method: Solder Pads
• Port location: Top

The PUM-3546L-R qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters. The primary distinction is product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The PUM-3546L-R is the direct substitute for the obsolete PUM-3546L. Both components share identical electrical specifications and mechanical form factors, ensuring pin-compatible and functionally equivalent operation within existing circuit designs.

The PUM-3546L-R offers the additional advantage of active product status, ensuring continued availability and supply chain reliability. The component also meets ROHS3 compliance requirements, addressing regulatory requirements for new designs and manufacturing environments where RoHS compliance is mandated.

Selection between these parts should be based on regulatory requirements and supply availability. For applications requiring RoHS compliance or long-term production support, the PUM-3546L-R is the appropriate choice. The electrical performance and physical compatibility remain identical across both variants.

Frequently Asked Questions (FAQ)

Q: Can the PUM-3546L-R be used as a direct replacement for the PUM-3546L?

A: Yes. The PUM-3546L-R is electrically and mechanically equivalent to the PUM-3546L. All critical parameters—sensitivity, impedance, voltage range, supply current, and physical dimensions—are identical. The components are pin-compatible and functionally interchangeable.

Q: What is the primary difference between these two parts?

A: The PUM-3546L is classified as obsolete, while the PUM-3546L-R maintains active product status. Additionally, the PUM-3546L-R is ROHS3 compliant, whereas the PUM-3546L is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between the PUM-3546L and PUM-3546L-R?

A: The PUM-3546L-R is supplied in bulk packaging, while the original PUM-3546L packaging designation is not specified. This distinction does not affect component functionality or electrical performance.

Q: What frequency range does the PUM-3546L operate within?

A: The original PUM-3546L does not specify a frequency range in the provided documentation. The PUM-3546L-R specifies 30 Hz ~ 15 kHz. For applications requiring confirmed frequency response characteristics, the PUM-3546L-R documentation should be consulted.

Q: Are both components suitable for new product designs?

A: The PUM-3546L-R is recommended for new designs due to its active product status and ROHS3 compliance. The PUM-3546L, being obsolete, is not suitable for new production unless existing inventory is available and regulatory compliance is not a requirement.

Q: What is the moisture sensitivity level for these microphones?

A: Both the PUM-3546L and PUM-3546L-R have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without special moisture control measures.