onsemi FSA515UCX Low Side 1, SPST Depletion Power Switch IC 4-Pin, WLCSP

This image is representative of the product range

View all Power Switch ICs
Bulk discount available

Subtotal (1 pack of 25 units)*

SGD20.40

(exc. GST)

SGD22.225

(inc. GST)

Add to Basket
Select or type quantity
Temporarily out of stock
  • Shipping from 14 August 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units
Per unit
Per Pack*
25 - 25SGD0.816SGD20.40
50 - 75SGD0.799SGD19.98
100 - 225SGD0.776SGD19.40
250 - 975SGD0.752SGD18.80
1000 +SGD0.729SGD18.23

*price indicative

Packaging Options:
RS Stock No.:
189-0531
Mfr. Part No.:
FSA515UCX
Manufacturer:
onsemi
Find similar products by selecting one or more attributes.
Select all

Brand

onsemi

Product Type

Power Switch IC

Power Switch Topology

Low Side

Power Switch Type

SPST Depletion

Switch On Resistance RdsOn

1.1Ω

Number of Inputs

1

Mount Type

Surface

Minimum Supply Voltage

0V

Package Type

WLCSP

Pin Count

4

Maximum Supply Voltage

5.5V

Minimum Operating Temperature

-40°C

Maximum Operating Temperature

85°C

Operating Current

350mA

Standards/Approvals

No

Length

0.84mm

Height

0.27mm

Automotive Standard

No

The FSA515 is a high-performance single-pole single-throw (SPST) depletion switch. The depletion technology allows the device to conduct signals when there is no VDD is available and to isolate signals when VDD is present. The FSA515 is 5.5V tolerant and can pass or isolate negative signal swings down to -3.0V.

SPST Depletion Switch

Normally Closed when VCC<0.5V

VSW: -3V to +5.5V

RON: 0.7Ω (Typical)

RFLAT: 1.1mΩ (Typical)

End Products

Mobile Accessories, Adapters, and Cables

Phones, Tablets, and Laptops

Headsets

Related links