ILPS28QSW datasheet(12/52 Pages) STMICROELECTRONICS

No. de pieza	ILPS28QSW

Descripción Electrónicos	Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with Qvar detection in a water-resistant package

PDF	52 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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5.4

Device structure

The ILPS28QSW has a unique cylindrical package solution with a full metal lid assembled on ceramic substrate

and this cylindrical package provides an easy assembly with O-rings in the end user’s application.

Figure 5. ILPS28QSW internal structure

This structure (Figure 5) is designed and verified to resist water pressure up to 10 ATM and the potting gel in the

ILPS28QSW has been proven to protect electronic components from long-term exposure to harsh environments

such as water mixed with chlorine, bromine, commercial washing detergent and fuels, solvents and chemicals.

It also provides excellent low-stress encapsulation performance for sensitive electronic components from severe

environmental conditions such as high temperature and humidity, refer to the properties of the gel that are given

in the following table.

Table 10. Potting gel properties

Properties

Potting gel

Permeability g/m2·24 hr

Hardness (penetration) based on ASTM D1403

Ultralow Young's modulus

Less than 0.01 GPa

TCE (thermal coefficient of expansion)

300 ppm/°C

ILPS28QSW

Device structure

DS13905 - Rev 1

page 12/52

ILPS28QSW Datasheet(PDF) 12 Page - STMicroelectronics