19-4880; Rev 11/09 DS9107 iButton Capsule www.maxim-ic.com DESCRIPTION TECHNICAL DRAWING The iButton Capsule is a mechanical enclosure to protect Temperature Logger iButtons (DS1921 and DS1922 series) from moisture, solvents and pressure. It provides IP68 protection to the iButton inside (refer to Application Note 4126: Understanding the IP (Ingress Protection) Ratings of iButton Data Loggers and Capsule). The protection level exceeds the “Water Resistant 3 ATM” requirements. Screws 25.4 Top The DS9107 consists of a base with the cavity for a F5 iButton, a screw-in plug with O-ring to seal the enclosure, and a top with two stainless-steel screws to mount the iButton Capsule to a cable, e.g., to measure temperature at different levels within a liquid. The cable is inserted into the notch of the plug where it is held in place by the matching protrusion of the top piece. 2.54 3.3 Protrusion Notch 25.4 Plug 6.35 Base, plug, and top are made of polyphenylene sulfide (PPS). This material is chosen for its mechanical properties (remains stable during both long and short-term exposure to high temperatures), inherent flame resistance, and outstanding chemical resistance (inert to steam, strong bases, fuels and acids). Although PPS is virtually insoluble below 200°C, it can be attacked by chlorinated hydrocarbons. The silicone O-ring matches the temperature and chemical qualities of the PPS. In addition, it is resistant to sunlight, ozone, oxygen, and UV light. The chemical stability of the screws does not compromise that of the PPS and the silicone. 12.7 O-Ring 25.4 Base 16.5 Cavity for F5-size iButton 6.35 APPLICATIONS Autoclave Sterilization Seawater temperature profiling Monitoring of beverage production Scientific research 22.2 All dimensions are in millimeters. ORDERING INFORMATION PART DS9107+ 5.1 DESCRIPTION iButton Capsule +Denotes a lead(Pb)-free/RoHS-compliant product. iButton is a registered trademark of Maxim Integrated Products, Inc. 1 of 3 DS9107: iButton Capsule ABSOLUTE MAXIMUM RATINGS Temperature Range -40°C to +140°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device. SPECIFICATIONS PARAMETER Weight Physical Dimensions Torque for Tightening the Plug Number of Open/Close Cycles Number of Autoclave Cycles Thermal Response Time Constant Note 1: Note 2: Note 3: CONDITIONS Empty (Note 1) Maximum torque applied From 25°C @ 101.3kPa (14.7psia) to 121°C @ 205kPa (29.7psia), tightened to maximum torque (Note 2) MIN TYP MAX UNITS 18.4 See technical drawing 36.5 500 grams mm Nm 100 (Note 3) 150 s Equivalent to 2.5ft/lbs. Absolute pressure is specified; the autoclave peak pressure is 103.4 kPa (15 psig) above the standard atmospheric pressure. The value was derived from submerging an iButton capsule with DS1922T inside into 55°C water. The initial temperature of iButton and capsule was 23.5°C. Without capsule, the response time constant is approximately 30s. Do not drop an unprotected iButton into water or any other liquid. Top, Plug, Base Material: Polyphenylene sulfide (PPS Ryton) with black flat finish, electrically non-conductive. The injection molding compounds (Ryton® PPS) used in the DS9107 are subject to the general safety provisions of the U.S. Food, Drug and Cosmetic Act. It is the responsibility of the purchaser/user of the DS9107 iButton Capsule to determine the safety and suitability of the injection molding compounds for their specific application. O-Ring Material: S500-70 Silicone Compound, orange, FDA approved. Replacement O-Rings: Size AS568-019, inner diameter 13/16 inch, outer diameter 15/16 inch, cross section 1/16 inch, nominal values. Screws Material: Type 303 austenitic stainless-steel. Replacement Screws: flat-head Phillips countersunk, self-tapping, M2.3, 9mm long. APPLICATIONS INFORMATION The iButton is inserted into the base part with the data contact towards the bottom of the base. The plug is then placed into the base and initially tightened by hand. Then the base is held with a wrench, and using a metal stick inserted horizontally into the notch of the plug, the plug is tightened until its head touches the top of the base. It is important not to exceed the maximum permissible torque. The iButton Capsule does not provide electrical contact to the iButton inside. Therefore it is necessary to setup (mission) the temperature logger first before inserting it into the iButton Capsule. To download the logged temperature data, the logger needs to be taken out of the iButton Capsule. Ryton is a registered trademark of Chevron Phillips Chemical Company LP. 2 of 3 DS9107: iButton Capsule REVISION HISTORY REVISION DATE 8/09 11/09 DESCRIPTION Added the + sign to the PART number in the Ordering Information table, indicating a lead(Pb)-free/RoHS-compliant package. Added a reference to the device’s ingress protection rating and Application Note 4126. Added statement to Note 3: “Do not drop an unprotected iButton into water or any other liquid.” PAGES CHANGED 1 1 2 3 of 3 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.