gtl1655 NXP Semiconductors, gtl1655 Datasheet - Page 20

• Manufacturer Part Number: gtl1655
• Description: Lvttl-to-gtl/gtl+ Bus Transceiver With Live Insertion.
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 12936
Product data
13.4 Manual soldering
13.5 Package related soldering information
During placement and before soldering, the package must be fixed with a droplet of
adhesive. The adhesive can be applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the adhesive is cured.
Typical dwell time of the leads in the wave ranges from 3 to 4 seconds at 250 C or
265 C, depending on solder material applied, SnPb or Pb-free respectively.
A mildly-activated flux will eliminate the need for removal of corrosive residues in
most applications.
Fix the component by first soldering two diagonally-opposite end leads. Use a low
voltage (24 V or less) soldering iron applied to the flat part of the lead. Contact time
must be limited to 10 seconds at up to 300 C.
When using a dedicated tool, all other leads can be soldered in one operation within
2 to 5 seconds between 270 and 320 C.
Table 18:
[1]
[2]
Package
BGA, HTSSON..T
SSOP..T
DHVQFN, HBCC, HBGA, HLQFP, HSO, HSOP,
HSQFP, HSSON, HTQFP, HTSSOP, HVQFN,
HVSON, SMS
PLCC
LQFP, QFP, TQFP
SSOP, TSSOP, VSO, VSSOP
CWQCCN..L
•
•
For packages with leads on two sides and a pitch (e):
The footprint must incorporate solder thieves at the downstream end.
For packages with leads on four sides, the footprint must be placed at a 45 angle
to the transport direction of the printed-circuit board. The footprint must
incorporate solder thieves downstream and at the side corners.
– larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be
– smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the
For more detailed information on the BGA packages refer to the (LF)BGA Application Note
(AN01026); order a copy from your Philips Semiconductors sales office.
All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the
maximum temperature (with respect to time) and body size of the package, there is a risk that internal
or external package cracks may occur due to vaporization of the moisture in them (the so called
popcorn effect). For details, refer to the Drypack information in the Data Handbook IC26; Integrated
Circuit Packages; Section: Packing Methods .
parallel to the transport direction of the printed-circuit board;
transport direction of the printed-circuit board.
[5]
, SO, SOJ
[3]
[1]
, TFBGA, USON, VFBGA
Suitability of surface mount IC packages for wave and reflow soldering
methods
[8]
, PMFP
[3]
, LBGA, LFBGA, SQFP,
Rev. 01 — 11 May 2004
16-bit LVTTL-to-GTL/GTL+ bus transceiver with live insertion
[9]
, WQCCN..L
[8]
Soldering method
Wave
not suitable
not suitable
suitable
not recommended
not recommended
not suitable
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
[4]
[5][6]
[7]
GTL1655
Reflow
suitable
suitable
suitable
suitable
suitable
not suitable
[2]
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