SE95U,025 NXP Semiconductors, SE95U,025 Datasheet - Page 23

• Manufacturer Part Number: SE95U,025
• Description: IC TEMP SENSOR DGTL
• Manufacturer: NXP Semiconductors

Specifications of SE95U,025

• Function: Temp Sensor, Watchdog
• Topology: ADC (Sigma Delta), Comparator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 125°C
• Output Type: I²C™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 2.8 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: Die
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
SE95_7
Product data sheet
16.4 Reflow soldering
Key characteristics in reflow soldering are:
Table 19.
Table 20.
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
Package thickness (mm)
< 1.6
1.6 to 2.5
> 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 19
SnPb eutectic process (from J-STD-020C)
Lead-free process (from J-STD-020C)
and
Ultra high accuracy digital temperature sensor and thermal watchdog
Figure
20
Rev. 07 — 2 September 2009
21.
Package reflow temperature ( C)
Volume (mm
< 350
235
220
Package reflow temperature ( C)
Volume (mm
< 350
260
260
250
3
3
)
)
Figure
350 to 2000
260
250
245
21) than a SnPb process, thus
220
220
350
> 2000
260
245
245
© NXP B.V. 2009. All rights reserved.
SE95
23 of 27