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Datasheet Humidity Filter Cap SF2

Datasheet Humidity Filter Cap SF2
5Pages

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Datasheet Filter Cap SF2 For Humidity and Temperature Sensor SHT2x Protection against dust and particles Protection against water immersion Designed to match on SHT2x DFN type sensors Optimized for response time of sensor Product Summary The filter cap SF2 protects SHT2x humidity and temperature sensors against dust, water immersion as well as against contamination by particles. The cavity inside is made such that the volume between membrane and sensor is kept minimal and hence the impact on response time for humidity measurements is reduced to a minimum. The filter cap SF2 is available in black color with a black filter membrane. The filter cap SF2 is made of a single piece of Polybutylene Terephthalate (PBT) with a filter membrane welded on it. The SF2 filter cap is designed to be mounted after soldering by clipping the four pins into openings in the PCB. Together with the sensor it provides a compact entity which may serve as an adaptor to the device housing. Adding adhesive for seal to PCB and using an oring it serves for a waterproof mounting solution. Technical Specifications Parameter Operating Range IP1 RoHS Body material Body Color UL94 (Body material only) Filter material Filter Color Filter Thickness Filter pore size Filtration efficiency 2 Oleophobic Rating (Filter)3 Mullen Hydrostatic Figure 1: Drawing of the filter cap SF2 (body only). Dimensions are given in mm (1mm = 0.039inch), tolerances are ±0.1mm. Add 0.15 to total height due to the filter membrane. The cavity inside the cap fits to SHT2x sensors. Additional space for solder joints are left open around the sensor. Value -40 … 125°C IP67 Compliant Polybutylene Terephthalate (PBT) Black UL94 V-0 (0.73mm) PTFE with polyester scrim Black 0.13 mm 1.5 μm 99.99% 8 >100mbar (>1m water) IP67: dust tight, protected against harmful water immersion up to 1m water column. (http://en.wikipedia.org/wiki/IP67) . To achieve IP67 at the connections between the housing or the PCB and the SF2 is up to the customer. 0.1µm particles at 0.05m/s air flow. Repellence of oil and hydrocarbons according to AATCC 118-1992 standard. Rating goes from 0 – 8 while 8 is most repellent.

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User’s Guide Filter Cap SF2 Mounting Instruction The filter cap SF2 is mounted to the PCB after soldering the SHT2x sensor by clipping the four pins into the openings in the PCB. The filter cap may be fixed by adhesive or by the force of the pins itself – compare Figure 2. By choosing different distances between the openings the SF2 either clips itself on the PCB by mechanical force or the pins can be used for positioning only – compare Figure 3. The recommended PCB thickness for mounting with clips is ≥ 0.8mm. Please note that when mounting the filter cap with clips, a hermetic seal...

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Labeling of the shipment Each shipment is labeled with product and tracking information – compare Figure 4. Part Description: Production Date: The SF2 are provided in trays of 100 pieces per tray. Shipping Package Figure 4: Label on shipment packaging: Customer P/N refers to the Sensirion product number, Lot No. refers to suppliers tracking information. Production Date is given as MM = month, DD = day, YYYY = year.

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Revision History Date August 2010 December 2011 Changes Changed front picture, completed technical spec. and labeling (DBO) More detailed information to mounting of filter cap, reference to application note.

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Important Notices Warning, Personal Injury Do not use this product as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. Do not use this product for applications other than its intended and authorized use. Before installing, handling, using or servicing this product, please consult the data sheet and application notes. Failure to comply with these instructions could result in death or serious injury. If the Buyer shall purchase or use SENSIRION products for any unintended or unauthorized application, Buyer shall defend,...

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Datasheet Humidity Filter Cap SF2 5Pages

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Datasheet Humidity Filter Cap SF2
5Pages