> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# MOSWITCH - 9A/28V SPDT MOSFET Switch

**Type:** Product page · **SKU:** CE08489 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/moswitch-9a-28v-spdt-mosfet-switch.html ([markdown](https://core-electronics.com.au/moswitch-9a-28v-spdt-mosfet-switch.html.md))

The MOSWITCH is a Single Pole Double Throw (SPDT) switch implemented with MOSFETs, with a very small footprint (2cm x 2cm). The diagram below shows the...

## Pricing

- **Price:** $11.85 (inc GST) — $10.77 AUD, exc GST
- **Quantity discounts:** 10+ $10.35 (exc GST) · 25+ $10.02 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE08489:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/CE08489:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The MOSWITCH is a Single Pole Double Throw (SPDT) switch implemented with MOSFETs, with a very small footprint (2cm x 2cm).

The diagram below shows the equivalent model of this product:

![](https://core-electronics.com.au/attachments/localcontent/SPDT_10146898c3e.png)

The control signal (CTRL) and main power rails have common ground and this product can connect the positive pole of V-IN to either OUT-A (default) or OUT-B (when CTRL is HIGH). It works like a relay, but is quiet, has higher switching speed and longer life cycle.

An optical coupler is used on the board to isolate the control signal and the main power rails. It is very easy and safe to use low voltage signal (e.g. 3.3V or 5V) to control higher voltage (up to 28V) and higher current (up to 9A for resistive load) circuit.

**Important!** **NEVER adjust wiring when a power supply is connected** - the spike could damage the device. The specification of MOSWITCH is measured when it is reliably connected. If you manually connect/disconnect the power supply with load connected to the device, it could damage the module (even if the voltage or current is way lower than the specification).

**Resources**

- [User manual](https://core-electronics.com.au/attachments/localcontent/MOSWITCH_SPDT_UserManual_59935f1dc5d.pdf)

**Specification**

- Dimensions: 20mm x 20mm x 3.7mm
- Weight: 4g
- Dual P-MOSFET: AO4805 ([datasheet](https://core-electronics.com.au/attachments/localcontent/AO4805_2551657b6a1.pdf))
- LED:
    - Blue LED for OUT-A (channel A)
    - Red LED for OUT-B (channel B)
- Input Voltage: DC 3~28V
- CTRL Signal Range: 0~28V (voltage > ~2.5V is considered HIGH)
- Output Current: Up to 9A (for resistive load, see remarks below)
- Channel Resistance: 15mOhm @20V, 18mOhm @10V, 24mOhm @5V, 70mOhm @3V
- Quiescent Current:
    - 0.3mA@3V, 0.7mA@5V, 1.5mA@9V, 2.1mA@12V, 5.4mA@24V, 6.6mA@28V
    - The quiescent current is mainly consumed by the LEDs
- Switching Speed
    - OUT-A turns on: 52µs (40µs delay + 12µs rise)
    - OUT-A turns off: 22µs (4µs delay + 18µs fall)
    - OUT-B turns on: 16µs (7us delay + 9µs rise)
    - OUT-B turns off: 91µs (49µs delay + 32µs fall)
- Operating Temperature: -30ºC ~ 80ºC (-22F~176F)
- Storage Temperature: -40ºC ~ 85ºC (-40F~185F)
- Humidity: 0~80%RH, no condensing

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_13634.jpg)