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TC7W66FU~6LF

TC7W66FU,LF Toshiba Bilateral FET Switch, 2V-12V, SM8

MPNTC7W66FU,LF
End of Life

Toshiba TC7W66FU,LF Bilateral FET Switch, TC7W series, 1 x 1:1 circuit, 2V-12V single supply, surface mount SM8 package, -40°C to 85°C.

$0.42Ref. price · indicative, final on quote
Toshiba Semiconductor TC7W66FU,LF datasheet (PDF)
Packaging8-TSSOP, 8-MSOP (0.110", 2.80mm Width)
RoHSROHS3 Compliant
SeriesTC7W
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TC7W66FU,LF specifications
ParameterValue
TypeBilateral, FET Switches
SeriesTC7W
MountingSurface Mount
Voltage2V ~ 12V
Voltage supply sourceSingle Supply
Operating temperature-40°C ~ 85°C
Circuit1 x 1:1
PackageTape & Reel (TR); Cut Tape (CT)
Case8-TSSOP, 8-MSOP (0.110\", 2.80mm Width)
Independent circuits2

Product details

The Toshiba TC7W66FU,LF is a bilateral FET switch from the TC7W series, configured as 1 x 1:1 SPST with two independent circuits on a single die.

Supplied in an SM8 package (8-pin SSOP, 2.80 mm body width), the footprint matches standard 8-TSSOP and 8-MSOP land patterns — a single PCB pad layout serves both package variants. Surface-mount assembly with the SM8 body keeps the component height low, suited for dense mixed-signal boards where an analog switch sits adjacent to an op-amp or ADC.

Lifecycle and compliance

Fully ROHS3 compliant, with no restricted substances above the threshold limits per the EU directive.

Frequently asked questions

What is the TC7W66FU,LF used for?

It is a bilateral FET switch that passes analog or digital signals in either direction when enabled. Typical uses include audio muting, signal multiplexing, sample-and-hold circuits, and power-domain isolation in battery-powered devices.

Is TC7W66FU,LF a direct drop-in for TC7W66FK,LF?

Both share the same die and electrical ratings, but the TC7W66FK,LF comes in a different package (8-VSSOP) with a smaller body width. The SM8 package of the FU variant has a different footprint — the two are not pin-compatible without a board layout change.