SHT1X Ver la hoja de datos (PDF) - Unspecified

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componentes Descripción

Fabricante

SHT1X

Humidity & Temperature Sensor

Unspecified 

SHT1x / SHT7x Relative Humidity & Temperature Sensor System

5 Package Information

5.1 SHT1x (surface mountable)

Pin Name Comment

1 GND Ground

2 DATA Serial data, bidirectional

3 SCK Serial clock, input

4 VDD Supply 2.4 - 5.5 V

NC

Remaining pins must be left unconnected

Table 10 SHT1x Pin Description

5.1.1 Package type

The SHT1x is supplied in a surface-mountable LCC

(Leadless Chip Carrier) type package. The sensors housing

consists of a Liquid Crystal Polymer (LCP) cap with epoxy

glob top on a standard 0.8 mm FR4 substrate. The device is

free of lead, Cd and Hg.

Device size is 7.42 x 4.88 x 2.5 mm (0.29 x 0.19 x 0.1 inch)

Weight 100 mg

The production date is printed onto the cap in white numbers

in the form wwy. e.g. ”351” = week 35, 2001.

5.1.2 Delivery Conditions

The SHT1x are shipped in 12mm tape at 100pcs or 400pcs..

Reels are individually labelled with barcode and human

readable labels. The Lot numbers allow full traceability

through production, calibration and test.

2.8mm

Carrier Tape

Cover Tape

Trailer Tape

300mm minimum

Components

Leader Tape

480mm minimum

Figure 12 Tape configuration and unit orientation

5.1.3 Soldering Information

Standard reflow soldering ovens may be used. For details

please see application note "soldering procedure".

For manual soldering contact time must be limited to 5

seconds at up to 350 °C.

After soldering the devices should be stored at >74 %RH for

at least 24h to allow the polymer to rehydrate.

Please consult the application note “Soldering procedure” for

more information.

5.1.4 Mounting Examples

Slit to minimize heat

transfer from the PCB

Figure 13 SHT1x PCB Mounting example

The SF1 membrane filter cap is available for optimal IP67

protection. When mounted through a housing the interior can

be protected from the environment while still allowing high

quality humidity measurements (see example below).

o-ring

housing

Filtercap

SHT1x

PCB

housing

melted plastic pin

Figure 14 SF1 IP67 filter cap mounting example

Top View

1.15

(0.04)

NC

1.9

(0.07)

1.49

(0.06)

sensor opening

NC

1

NC

2

NC

3

NC

4

NC

Side View

Recommended PCB Footprint

2.44

(0.1)

4.88 (0.19)

actual size

Figure 15 SHT1x drawing and footprint dimensions in mm (inch)

www.sensirion.com

v2.02 July 2004

1.8 3.48 (0.137) 1.8

(0.07) 7.08 (0.278) (0.07)

7/9

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