2SK1109(2)-A

$0.26

Description：JFET N-CH
Series：*

SKU:9bf986b0b69e Category: JFETs Brand: Renesas Electronics Corporation

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Product introduction

Product Detailed Parameters

Description：JFET N-CH
Series：*
Mfr：Renesas Electronics Corporation
Package：Bulk
FET Type：-
Voltage - Breakdown (V(BR)GSS)：-
Drain to Source Voltage (Vdss)：-
Current - Drain (Idss) @ Vds (Vgs=0)：-
Current Drain (Id) - Max：-
Voltage - Cutoff (VGS off) @ Id：-
Input Capacitance (Ciss) (Max) @ Vds：-
Resistance - RDS(On)：-
Power - Max：-
Operating Temperature：-
Mounting Type：-
Package / Case：-
Supplier Device Package：-
Grade：-
Qualification：-

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2SK1109(2)-A

Overview

The 2SK1109(2)-A is an N-channel silicon junction field-effect transistor (JFET) manufactured by Renesas Electronics Corporation. Designed specifically for impedance conversion applications in electret condenser microphones (ECM), this component operates with a drain-source voltage of 1V and a drain current of 600uA. It features a low input capacitance of 7pF and a maximum power dissipation of 80mW, ensuring efficient signal processing within compact electronic audio devices.

Feature Summary

N-channel silicon JFET construction optimized for microphone impedance conversion
Low input capacitance design supporting high-fidelity audio signal integrity
Suitable for integration into compact electret condenser microphone modules

Applications

Impedance converter circuits for electret condenser microphones
Audio input stages in consumer electronics
Signal conditioning for MEMS or ECM audio sensors

Procurement Notes

Verify the specific ordering suffix and package configuration against the official Renesas datasheet to ensure compatibility with your PCB layout. Confirm that the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components and ensure supply chain authenticity.

Selection Notes

Select this component when designing low-voltage audio interfaces requiring minimal input capacitance. The 1V operating limit dictates its use in battery-powered or low-voltage portable devices. Ensure the application circuit can accommodate the 600uA drain current specification without exceeding the 80mW thermal dissipation limits defined in the technical documentation.

Part Context

This device belongs to the Renesas JFET family, specifically engineered for audio pre-amplification tasks. It serves as a critical interface between high-impedance acoustic sensors and low-impedance amplifier stages. The 2SK1109 series is widely recognized in the audio industry for its stability and noise performance in miniature microphone assemblies.

Replacement Considerations

Consult the official Renesas replacement guide for direct equivalents. Verify pinout compatibility and electrical parameter overlap before substituting with other N-channel JFETs such as the 2SK1108 variants, ensuring the alternative meets the 7pF capacitance and 1V rating constraints.

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

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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

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Mode of Transportation

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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.