Surface Mount Rotary Encoder - EC11J

SKU: ADA5454 Brand: Adafruit

For projects that need a rotary encoder but need to keep it single-sided or need to avoid interrupting traces or devices on the other side, here's an...

$9.70 AUD, inc GST

$8.82 AUD, exc GST

Available with a lead time
Expect dispatch between May 09 and May 13

Quantity Discounts:

10-25 $8.46 (exc GST)
25+ $8.20 (exc GST)

For projects that need a rotary encoder but need to keep it single-sided or need to avoid interrupting traces or devices on the other side, here's an all-SMT rotary encoder! It's a high-quality 15-pulse encoder from Alps, with detents and a nice feel. There's a nice smooth bushing for placement in a box.

Knob not included, but you can pick one up here.

This encoder also has a push-button built into it so you can press onto the knob to close a separate switch. One side has a 3 pad connector (ground and two coding pins) and the other side has two pad for a normally open switch. There's also 6 large mechanical pads for making a strong physical connection: best to use a ground plane with 6 open pads so that there's a solid sheet to protect against the encoding shearing off.

Rotary encoders are useful as rotation sensors or selectors and look similar to potentiometers. However they are not like potentiometers at all, so it's important to realize the difference! These rotary encoders rotate all the way around continuously and are divided up into 15 'segments'. Each segment has a clicky feeling to it, and each movement clockwise or counter-clockwise causes the two switches to open and close. There is no way to know what the current 'position' is - instead you would use a microcontroller to count how many 'clicks' left or right it has been turned. If you need to detect rotational 'position' a potentiometer would be a better choice.

Technical Details

Specifications:

15mm long flat shaft
30 positions 15 pulses
Press-switch travel: 1.5mm
Operating life: 100,000 cycles
Operating temperature range: -40°C to +85°C
10mA 5V DC
Output signal: A, B, 2-phase output
Maximum/minimum operating current (resistive load): 10mA/1mA
Insulation resistance: 100MO min. 250V DC
Withstand voltage: 300V AC for 1 minute or 360V AC for 1s
Detent torque:
- 12±5mN·m (initial stage)
- 10±4mN·m (after reflow)
Shaft push and pull strength: 100N
Journey: 0.5±0.3mm
Action force: 5±2N

Datasheet

Product Comments

Start the conversation

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$6+ for Standard Post (typically 6+ business days, tracked)
$10+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$11+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!