onsemi FSA551UCX Analog Switches - Special Purpose
Audio Switch IC 2 Channel 9-WLCSP (1.22x1.22)
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
FSA551UCX
Detailed Description
IC AUDIO SWITCH DUAL SPST 9WLCSP
Package
9-UFBGA, WLCSP
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
FSA551UCX Datasheet
Quick Jump:
Technical Specifications
onsemi FSA551UCX Analog Switches - Special Purpose technical specifications.
General
Series
FSA551
RoHS
Yes
Number of Channels
2
Package / Case
9-UFBGA
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.5 V ~ 3 V
Lifecycle Status
Obsolete
Multiplexer Demultiplexer Circuit
1:1
Switch Circuit
SPST
Alternate Parts Comparison (FSA551UCX vs FSA2258L10X vs FSA1258L8X vs FSA2467UMX)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 9-UFBGA | 10-UFQFN Exposed Pad | 8-UFQFN | 16-UFQFN |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete |
| 3db Bandwidth | 240MHz | 50MHz | 300MHz | 85MHz |
| Multiplexer Demultiplexer Circuit | 1:1 | 2:1 | 1:1 | 2:2 |
| On State Resistance Max | 600mOhm | 500mOhm (Typ) | 1.15Ohm | 400Ohm (Typ) |
| Package | WLCSP-9 | 10-UFQFNExposedPad | UFQFN-8 | UQFN-16 |
| Switch Circuit | SPST | SPDT | SPST - NO/NC | DPDT |
| Voltage Supply Single V | 1.5V ~ 3V | 1.65V ~ 4.3V | 1.65V ~ 5.5V | 1.65V ~ 4.3V |
| Series | FSA551 | FSA2258 | FSA1258 | -- |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
More Parts in Special Purpose Analog Switches
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
