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TC7WBL3305CFK~6LF

Toshiba TC7WBL3305CFK,LF USB Switch, 19Ohm, 1.65-3.6V

MPNTC7WBL3305CFK,LF
End of Life

Toshiba Semiconductor TC7WBL3305CFK,LF, USB switch IC, SPST dual, 19Ohm max on-resistance, 1.65V to 3.6V supply, 8-VFSOP (2.30mm width) package, Tape & Reel.

$0.49Ref. price · indicative, final on quote
Toshiba Semiconductor TC7WBL3305CFK,LF datasheet (PDF)
Packaging8-VFSOP (0.091", 2.30mm Width)
RoHSRoHS Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TC7WBL3305CFK,LF specifications
ParameterValue
MountingSurface Mount
Voltage - supply, single (V+)1.65V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Case8-VFSOP (0.091\", 2.30mm Width)
Channels2
On-State resistance19Ohm

Product details

Dual SPST USB switch with low on-resistance

The TC7WBL3305CFK,LF is a dual single-pole single-throw (SPST) analog switch from Toshiba's 7WBL series, designed for USB 2.0 signal switching and general-purpose analog or digital signal routing. Each of the two independent switches presents a maximum 19 Ohm on-resistance, keeping signal attenuation low in a 50-Ohm or 90-Ohm differential trace.

Supply voltage and logic-level compatibility

Operating from a single supply rail between 1.65 V and 3.6 V, the switch accepts control logic thresholds that track the supply.

Package footprint and board integration

Housed in an 8-VFSOP package (0.091" body width, 2.30 mm nominal), the part occupies a compact footprint roughly 2.3 mm x 2.0 mm. Surface-mount assembly with standard reflow profiles; no exposed thermal pad to manage.

Temperature grade and deployment environment

The 85°C ceiling means the part can sit next to a warm processor or power management IC without derating the on-resistance or leakage current.

RoHS compliant per the manufacturer's declaration. Sourced to order against BOM quantities; availability and current pricing confirmed at RFQ time.

Frequently asked questions

What is the on-resistance of the TC7WBL3305CFK,LF and why does it matter?

Maximum on-resistance is 19 Ohm. For a USB 2.0 differential pair, this adds about 0.2 dB of insertion loss at 480 Mbps — negligible in a short PCB trace, but worth budgeting if the switch is in series with a long cable run or multiple connectors.

Will TC7WBL3305CFK,LF drop into a board laid out for TC7W53FK,LF without rewiring?

No. The TC7W53FK,LF is a 2-channel multiplexer/demultiplexer (SPDT) with 100 Ohm on-resistance and a 2.0 V minimum supply, while the TC7WBL3305CFK,LF is a dual SPST switch with 19 Ohm on-resistance and a 1.65 V minimum supply. The pin functions differ — the TC7W53 uses a common I/O pin per channel, whereas the TC7WBL3305 has independent I/O for each SPST. A board respin is required.