# Bourns EMS22A Non-Contacting Absolute Magnetic Encoder, 10-bit, 5 V (EMS22A50-B28-LS6)

![Bourns EMS22A Non-Contacting Absolute Magnetic Encoder, 10-bit, 5 V (EMS22A50-B28-LS6)](https://parts.trymaglev.com/img/ac-bourns-ems22a50-b28-ls6.webp)

Panel/bushing-mount 22 mm magnetic absolute encoder with its own shaft; a cheap, easy-to-source output-angle sensor for prototypes and slow joints.

- Maglev ID: ac-bourns-ems22a50-b28-ls6
- Brand: Bourns
- MPN: EMS22A50-B28-LS6
- Category: actuators / Magnetic Encoders
- Origin: US (maker HQ, factory not confirmed)
- Maker: Bourns (brand, US)
- NDAA: unknown · Blue UAS: unknown · FCC: n/a
- HTS: 9031.80.80.85 (typical)
- MOQ: unknown · Lead time: unknown
- Confidence: VERIFIED

## Price
- 1+: $62.56 (distributor, 2026-10-30, https://www.digikey.com/en/products/detail/bourns-inc/EMS22A50-B28-LS6/3694111)
- 100+: $40.26 (distributor, 2026-10-30, https://www.digikey.com/en/products/detail/bourns-inc/EMS22A50-B28-LS6/3694111)
- 250+: $37.58 (distributor, 2026-10-30, https://www.digikey.com/en/products/detail/bourns-inc/EMS22A50-B28-LS6/3694111)

## Specifications
- Resolution: 1024 positions (10 bit absolute)
- Accuracy: ±0.7° nominal or better; ±1.4° worst case; linearity 0.5 %
- Max speed: 10,000 rpm maximum (ball bearing shaft)
- Interface: Absolute serial (SSI-style 3-wire: CLK, DO, CS)
- Form: on-axis module: housed encoder with shaft and bushing, PC pins
- Sensing: Hall (non-contacting magnetic)
- Supply: 5.0 VDC ±10 % (EMS22A50); 3.3 V option
- Bore / ring ID: n/a
- Operating temp: -40 °C to +125 °C

## Links
- Product: https://www.digikey.com/en/products/detail/bourns-inc/EMS22A50-B28-LS6/3694111
- Datasheet: https://www.bourns.com/docs/Product-Datasheets/EMS22A.pdf
- CAD: none

## Sources
- https://www.digikey.com/en/products/detail/bourns-inc/EMS22A50-B28-LS6/3694111 (price breaks, stock, image)
- https://www.bourns.com/ (datasheet: resolution, accuracy, speed, supply)