PCA9547_2

© Koninklijke Philips Electronics N.V. 2006. All rights reserved.

Product data sheet

Rev. 02 — 12 September 2006

23 of 26

Philips Semiconductors

PCA9547

[3]

These transparent plastic packages are extremely sensitive to reflow soldering conditions and must on no

account be processed through more than one soldering cycle or subjected to infrared reflow soldering with

peak temperature exceeding 217

°C ± 10 °C measured in the atmosphere of the reflow oven. The package

body peak temperature must be kept as low as possible.

[4]

These packages are not suitable for wave soldering. On versions with the heatsink on the bottom side, the

solder cannot penetrate between the printed-circuit board and the heatsink. On versions with the heatsink

on the top side, the solder might be deposited on the heatsink surface.

[5]

If wave soldering is considered, then the package must be placed at a 45

° angle to the solder wave

direction. The package footprint must incorporate solder thieves downstream and at the side corners.

[6]

Wave soldering is suitable for LQFP, QFP and TQFP packages with a pitch (e) larger than 0.8 mm; it is

definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.

[7]

Wave soldering is suitable for SSOP, TSSOP, VSO and VSSOP packages with a pitch (e) equal to or larger

than 0.65 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.

[8]

Image sensor packages in principle should not be soldered. They are mounted in sockets or delivered

pre-mounted on flex foil. However, the image sensor package can be mounted by the client on a flex foil by

using a hot bar soldering process. The appropriate soldering profile can be provided on request.

[9]

Hot bar soldering or manual soldering is suitable for PMFP packages.

14. Abbreviations

Table 12.

Abbreviations

Acronym

Description

CDM

Charged Device Model

ESD

ElectroStatic Discharge

HBM

Human Body Model

Inter-Integrated Circuit bus

LSB

Least Significant Bit

MM

Machine Model

PCB

Printed-Circuit Board

SMBus

System Management Bus