DS9107: iButton Capsule
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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 CONDITIONS MIN TYP MAX UNITS
Weight Empty 18.4 grams
Physical Dimensions See technical drawing mm
Torque for Tightening the Plug (Note 1) 36.5 Nm
Number of Open/Close Cycles Maximum torque applied 500
Number of Autoclave Cycles
From 25°C @ 101.3kPa (14.7psia) to
121°C @ 205kPa (29.7psia), tightened
to maximum torque (Note 2)
100
Thermal Response Time
Constant
(Note 3) 150 s
Note 1:
Equivalent to 2.5ft/lbs.
Note 2:
Absolute pressure is specified; the autoclave peak pressure is 103.4 kPa (15 psig) above the standard
atmospheric pressure.
Note 3:
The value was derived from submerging an i
Button capsule with DS1922T inside into 55°C water. The
initial temperature of i
Button and capsule was 23.5°C. Without capsule, the response time constant is
approximately 30s. Do not drop an unprotected i
Button 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 i
Button 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 i
Button 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 i
Button Capsule. To download the logged
temperature data, the logger needs to be taken out of the i
Button Capsule.
Ryton is a registered trademark of Chevron Phillips Chemical Company LP.
