FT234XD-T FTDI, FT234XD-T Datasheet - Page 33

• Manufacturer Part Number: FT234XD-T
• Description: USB Interface IC USB to Basic Serial UART IC
• Manufacturer: FTDI

Specifications of FT234XD-T

• Rohs: yes
• Product: USB 2.0
• Interface Type: UART, USB
• Operating Supply Voltage: 3.3 V to 5.25 V
• Operating Supply Current: 8 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: DFN-12
• Minimum Operating Temperature: - 40 C

9.3 Solder Reflow Profile
The FT234XD is supplied in a Pb free DFN-12 package. The recommended solder reflow profile is shown
in Figure 9.3.
Figure 9.3 FT234XD Solder Reflow Profile
The recommended values for the solder reflow profile are detailed in Table 9.1. Values are shown for both
a completely Pb free solder process (i.e. the FT234XD is used with Pb free solder), and for a non-Pb free
solder process (i.e. the FT234XD is used with non-Pb free solder).
Table 9.1 Reflow Profile Parameter Values
25
Time Maintained Above Critical Temperature
Time within 5°C of actual Peak Temperature
Time for T= 25°C to Peak Temperature, T
T
T
p
L
T Max
T Min
S
S
Average Ramp Up Rate (T
- Temperature Max (T
- Temperature Min (T
- Time (t
Peak Temperature (T
- Temperature (T
Profile Feature
Ramp Down Rate
- Time (t
Preheat
s
T = 25º C to T
Preheat
Copyright © 2013 Future Technology Devices International Limited
Time, t (seconds)
Min to t
(t
T
t
L
p
S
:
)
L
)
s
P
Max)
s
s
L
)
Min.)
Max.)
Ramp Up
s
p
)
to T
p
)
p
Pb Free Solder Process
t
p
3°C / second Max.
60 to 120 seconds
60 to 150 seconds
6°C / second Max.
20 to 40 seconds
8 minutes Max.
t
L
150°C
200°C
217°C
260°C
Document No.: FT_000753 Clearance No.: FTDI#324
Ramp
FT234XD USB TO BASIC UART IC
Down
Critical Zone: when
T is in the range
T to T
L
p
Non-Pb Free Solder Process
3°C / Second Max.
60 to 120 seconds
60 to 150 seconds
6°C / second Max.
20 to 40 seconds
6 minutes Max.
100°C
150°C
183°C
240°C
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