TO38-31549-B21

$34.65

Description：MICROPHONE
Series：-
Mfr：Knowles
Package：Tray

SKU:3ccc61cf98d5 Category: Microphones Brand: Knowles

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Product introduction

Product Detailed Parameters

Description：MICROPHONE
Series：-
Mfr：Knowles
Package：Tray
Type：-
Output Type：-
Direction：-
Frequency Range：-
Sensitivity：-
S/N Ratio：-
Impedance：-
Voltage Range：-
Current - Supply：-
Port Location：-
Ratings：-
Termination：-
Size / Dimension：-
Height (Max)：-
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Grade：-
Qualification：-
Voltage - Rated：-

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TO38-31549-B21

Overview

The Knowles TO38-31549-B21 is a small, thin omni-directional microphone designed for applications requiring minimal space. It belongs to the TO/BTO series of microphones. The component is identified with the YP-2018 marking and carries the date code 1751+. It is currently listed as an active product within the manufacturer's portfolio.

Feature Summary

Omni-directional acoustic response pattern
Compact form factor suitable for space-constrained designs

Applications

General audio recording devices
Voice recognition systems
Consumer electronics with limited internal volume

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly from Knowles Precision Devices before integration. Confirm that the YP-2018 marking aligns with your manufacturing timeline requirements. Ensure the active product status remains valid for long-term supply planning.

Selection Notes

Select this component when an omni-directional pickup pattern is required in a miniature package. Evaluate the physical dimensions against the available PCB real estate. Consider the electrical interface compatibility with the target audio processing circuitry prior to finalizing the design.

Part Context

This model is part of the broader TO/BTO microphone family produced by Knowles. These components are engineered for high reliability in consumer audio applications. The series emphasizes miniaturization while maintaining standard acoustic performance characteristics for general-purpose sound capture.

Replacement Considerations

Consult official substitution guides for compatible alternatives within the TO series. Verify pinout and acoustic specifications match before replacing existing inventory or redesigning circuits.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.