> **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 # FEETECH Sub-Micro Servo FS0403 **Type:** Product page · **SKU:** POLOLU-3421 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia) **Page:** https://core-electronics.com.au/feetech-sub-micro-servo-fs0403.html ([markdown](https://core-electronics.com.au/feetech-sub-micro-servo-fs0403.html.md)) The FS0403 analog sub-micro servo from FEETECH is a great tiny actuator for a small robot mechanism. Servo horns and associated hardware are included.... ## Pricing - **Price:** $16.85 (inc GST) — $15.32 AUD, exc GST - **Quantity discounts:** 10+ $14.71 (exc GST) · 25+ $14.25 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 21 and Aug 24. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-3421:1` (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/POLOLU-3421:1.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 | [![](https://core-electronics.com.au/attachments/localcontent/0J8282_1618380c860.jpg)](https://core-electronics.com.au/attachments/localcontent/0J8282_1491398004d.jpg) | |---| | FEETECH FS0403 Sub-Micro Servo with a LEGO Minifigure as a size reference. | This is a great general-purpose actuator for tiny mechanisms. The FS0403 is a very small 5 g analog servo from FEETECH (formerly known as Fitec) that offers position control over an approximate 120° operating angle for servo pulses between 900 µs and 2100 µs. As with most servos, the pulse range can be expanded to achieve an expanded operating angle, but the limits of this are not specified by FEETECH. (In Pololu's tests, Pololu were able to get an expanded range of approximately 180° over a pulse range of 650 µs to 2500 µs, but as this is not part of FEETECH’s official specifications, it is possible different units will behave differently in this regard.) The servo has a 6" (15 cm) cable that is terminated with a standard [JR-style connector](https://core-electronics.com.au/jr-connector-pack-female.html), which is Futaba-compatible, and it includes additional servo horns and mounting hardware. | \| [![](https://core-electronics.com.au/attachments/localcontent/0J8366_1264031a604.jpg)](https://core-electronics.com.au/attachments/localcontent/0J8366_106616ebcce.jpg) \| \|---\| \| The servo cable is terminated with a Futaba-compatible JR-style connector. \| | \| [![](https://core-electronics.com.au/attachments/localcontent/0J8283_15534afd6a2.jpg)](https://core-electronics.com.au/attachments/localcontent/0J8283_62654ff53ba.jpg) \| \|---\|---\| \| An example of hardware included with the FEETECH FS0403 sub-micro servo. Actual hardware might vary. \| | |---| You can find more information about this servo in its [datasheet](https://core-electronics.com.au/attachments/localcontent/FS0403-specs_970243717f8.pdf) (97k pdf). For more advanced robotics applications, please note that Pololu also carry a [**version of this servo that is specially modified**](https://core-electronics.com.au/feetech-sub-micro-servo-fs0403-fb-with-position-feedback.html) to provide access to the feedback potentiometer through a fourth (green) wire, which lets you monitor the actual position of the servo from your controller: | [![](https://core-electronics.com.au/attachments/localcontent/0J9682_21108076f86.jpg)](https://core-electronics.com.au/attachments/localcontent/0J9682_19807158b0a.jpg) | |---| | FEETECH Sub-Micro Servo FS0403-FB with Position Feedback. | Note that, as with most hobby servos, stalling or back-driving this servo can damage **People often buy this product together with:** | [![Power HD Sub-Micro Servo HD-1440A](https://core-electronics.com.au/attachments/localcontent/0J2014_4637a98b25.jpg)](https://core-electronics.com.au/power-hd-sub-micro-servo-hd-1440a.html) | [Power HD Sub-Micro Servo HD-1440A](https://core-electronics.com.au/power-hd-sub-micro-servo-hd-1440a.html) | |---|---| | [![Sub-Micro Servo 3.7g](https://core-electronics.com.au/attachments/localcontent/0J4128_4341e5cf36.jpg)](https://core-electronics.com.au/sub-micro-servo-3-7g-generic.html) | [Sub-Micro Servo 3.7g](https://core-electronics.com.au/sub-micro-servo-3-7g-generic.html) | |---|---| | [![Power HD High-Speed Digital Micro Servo DSM44](https://core-electronics.com.au/attachments/localcontent/0J2818_5557d18cb3.jpg)](https://core-electronics.com.au/power-hd-high-speed-digital-micro-servo-dsm44.html) | [Power HD High-Speed Digital Micro Servo DSM44](https://core-electronics.com.au/power-hd-high-speed-digital-micro-servo-dsm44.html) | |---|---| **Dimensions** | Size: | 20.0 × 8.3 × 19.3 mm | |---|---| | Weight: | 5 g | **General specifications** | Digital?: | N | |---|---| | Speed @ 6V: | 0.08 sec/60° | | Stall torque @ 6V: | 0.7 kg·cm | | Speed @ 4.8V: | 0.09 sec/60° | | Stall torque @ 4.8V: | 0.6 kg·cm | | Hardware included?: | Y | | Lead length: | 6 in | **File downloads** - **[Datasheet for the FEETECH Sub-Micro Servo FS0403](https://core-electronics.com.au/attachments/localcontent/FS0403-specs_970243717f8.pdf) (97k pdf)** ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_11712.jpg)