UJA1065 NXP Semiconductors, UJA1065 Datasheet - Page 70

• Manufacturer Part Number: UJA1065
• Manufacturer: NXP Semiconductors

Specifications of UJA1065

• Lead Free Status / RoHS Status: Supplier Unconfirmed

NXP Semiconductors
UJA1065_7
Product data sheet
13.4 Reflow soldering
Key characteristics in reflow soldering are:
Table 28.
Table 29.
Moisture sensitivity precautions, as indicated on the packing, must be respected at all
times.
Studies have shown that small packages reach higher temperatures during reflow
soldering, see
Package thickness (mm)
< 2.5
≥ 2.5
Package thickness (mm)
< 1.6
1.6 to 2.5
> 2.5
•
•
•
Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to
higher minimum peak temperatures (see
reducing the process window
Solder paste printing issues including smearing, release, and adjusting the process
window for a mix of large and small components on one board
Reflow temperature profile; this profile includes preheat, reflow (in which the board is
heated to the peak temperature) and cooling down. It is imperative that the peak
temperature is high enough for the solder to make reliable solder joints (a solder paste
characteristic). In addition, the peak temperature must be low enough that the
packages and/or boards are not damaged. The peak temperature of the package
depends on package thickness and volume and is classified in accordance with
Table 28
SnPb eutectic process (from J-STD-020C)
Lead-free process (from J-STD-020C)
and
Figure
29
Rev. 07 — 25 February 2010
30.
Package reflow temperature (°C)
Volume (mm
< 350
235
220
Package reflow temperature (°C)
Volume (mm
< 350
260
260
250
High-speed CAN/LIN fail-safe system basis chip
3
3
)
)
Figure
350 to 2000
260
250
245
30) than a SnPb process, thus
≥ 350
220
220
245
> 2000
260
245
UJA1065
© NXP B.V. 2010. All rights reserved.
70 of 76