FSA859UCX

$0.37

Description：IC SWITCH SPDTX1 750MOHM 8WLCSP
Series：-

SKU:8283f4138456 Category: Analog Switches, Multiplexers, Demultiplexers Brand: Fairchild Semiconductor

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Product introduction

Product Detailed Parameters

Description：IC SWITCH SPDTX1 750MOHM 8WLCSP
Series：-
Mfr：Fairchild Semiconductor
Package：Bulk
Switch Circuit：SPDT
Multiplexer/Demultiplexer Circuit：2:01
On-State Resistance (Max)：750mOhm
Channel-to-Channel Matching (ΔRon)：-
Voltage - Supply, Single (V+)：1.65V ~ 5.5V
Voltage - Supply, Dual (V±)：-
Switch Time (Ton, Toff) (Max)：25ns, 20ns
-3db Bandwidth：60MHz
Charge Injection：70pC
Channel Capacitance (CS(off), CD(off))：50pF
Current - Leakage (IS(off)) (Max)：10nA
Crosstalk：-55dB @ 1MHz
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：8-UFBGA, WLCSP
Supplier Device Package：8-WLCSP (1.91x0.91)
Number of Circuits：1
Grade：-
Qualification：-

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FSA859UCX

Overview

The FSA859UCX is a single-channel SPDT analog switch manufactured by onsemi, formerly Fairchild Semiconductor. It operates within a supply voltage range of 1.65V to 5.5V and features a maximum on-resistance of 750mΩ. The device provides a -3dB bandwidth of 60MHz with a charge injection of 70pC and leakage current of 10nA. Switching times are specified at 25ns for turn-on and 20ns for turn-off. It is housed in an 8-WLCSP package measuring 1.91x0.91mm and supports an operating temperature range from -40°C to 85°C.

Feature Summary

Single-pole double-throw (SPDT) configuration for signal routing
Low on-resistance for minimal signal attenuation
Compact wafer-level chip scale packaging

Applications

Portable multimedia devices
Mobile phone audio paths
MP3 players and digital voice recorders

Procurement Notes

Verify component authenticity through authorized distributors or certified secondary market suppliers. Confirm the part status as obsolete when planning long-term production. Ensure that any replacement components maintain compatible pinout and electrical specifications to avoid redesign efforts.

Selection Notes

Select this component for low-voltage applications requiring efficient signal switching. Evaluate the 750mΩ on-resistance against load requirements. Consider the 8-WLCSP footprint for space-constrained designs. Verify thermal performance within the specified operating temperature range.

Part Context

This component belongs to the FSA85 series of analog switches designed for portable electronics. It represents a transition period where Fairchild Semiconductor products were integrated into onsemi's portfolio. The technology focuses on miniaturization and power efficiency for mobile communication devices.

Replacement Considerations

The TS5A6542YZPR from Texas Instruments is documented as a similar substitute. Verify functional equivalence regarding pin configuration and electrical parameters before implementation.

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.