FT4222HQ-C-R datasheet(44/49 Pages) FTDI

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FT4222H USB2.0 TO QUADSPI/I2C BRIDGE IC

1.3

Document No.: FT_001011 Clearance No.: FTDI#405

10.3

Solder Reflow Profile

The FT4222H is supplied in a Pb free VQFN-32 package. The recommended solder reflow profile is shown

in Figure 10.3.

Figure 10.3 FT4222H Solder Reflow Profile

The recommended values for the solder reflow profile are detailed in Table 10.1. Values are shown for

both a completely Pb free solder process (i.e. the FT4222H is used with Pb free solder), and for a non-Pb

free solder process (i.e. the FT4222H is used with non-Pb free solder).

Profile Feature

Pb Free Solder Process

Non-Pb Free Solder Process

Average Ramp Up Rate (Ts to Tp)

3°C / second Max.

3°C / Second Max.

Preheat

- Temperature Min (Ts Min.)

- Temperature Max (Ts Max.)

- Time (ts Min to ts Max)

150°C

200°C

60 to 120 seconds

100°C

150°C

60 to 120 seconds

Time Maintained Above Critical Temperature

TL:

- Temperature (TL)

- Time (tL)

217°C

60 to 150 seconds

183°C

60 to 150 seconds

Peak Temperature (Tp)

260°C

240°C

Time within 5°C of actual Peak Temperature

(tp)

20 to 40 seconds

Ramp Down Rate

6°C / second Max.

Time for T= 25°C to Peak Temperature, Tp

8 minutes Max.

6 minutes Max.

Table 10.1 Reflow Profile Parameter Values

Critical Zone: when

T is in the range

T to T

Time, t (seconds)

T = 25ºC to T

Preheat

Ramp Up

Ramp

Down

T Max

T Min

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