iButton® Specialist and Manufacturer of Dallas Keys

DS1990A IButton

DS1990A-F5 iButton®

Regular price

exc. VAT

Sale price
£3.60 exc. VAT
Regular price
exc. VAT
Sold out
Unit price
Shipping calculated at checkout.

As a top of the range rugged data carrier, the DS1990A-F5 functions as an electronic registration number for automatic identification. 

Transferring data through the 1-Wire protocol, it requires only a single data lead and a ground return in order to operate. This makes it incredibly easy and lightweight to transport and use so that you never have to worry about carrying it with you.

Made of durable stainless steel, the DS1990A-F5 is highly resistant to environmental hazards. Designed to withstand dirt, moisture, and shock without issue, it is an ideal choice for even the harshest and most rugged of conditions.

Thanks to its self-aligning mating receptacles, the DS1990A-F5 iButton has the added boon of being incredibly easy to use. Made so that it can be mounted on an array of objects, from containers and pallets to bags and textiles, you can take advantage of its data-carrying features no matter how basic the facilities.

The device’s applications are extensive. Suitable for use for everything from access control through to work-in-progress tracking, tool management, and inventory control, it has an impressive operating range of -40°C through to +85°C, making it a versatile piece of equipment for even the most extreme expeditions.



  • Access Control
  • Work-In-Progress Tracking
  • Tool Management
  • Inventory Control


  • Can be Read in Less Than 5ms
  • Operating Range: 2.8V to 6.0V, -40°C to +85°C


  • Unique Factory-Lasered 64-Bit Registration Number Assures Error-Free Device Selection and Absolute Traceability Because no two parts are alike
  • Built-In Multidrop Controller for 1-Wire Net
  • Digital Identification by Momentary Contact
  • Data can be Accessed While Affixed to Object
  • Economically Communicates to Bus Master with a Single Digital Signal at 16.3kbps
  • Button Shape is Self-Aligning with Cup-Shaped Probes
  • Durable Stainless-Steel Case Engraved with Registration Number Withstands Harsh Environments, Easily Affixed with Self-Stick Adhesive Backing, Latched by its Flange, or Locked with a Ring Pressed Onto its Rim
  • Meets UL#913 (4th Edit.); Intrinsically Safe Apparatus: Approved Under Entity Concept for use in Class I, Division 1, Group A, B, C, and D Locations

DS1990A - Datasheet