Version 1.2

Date: 2023-04-20

- 7 -

MEMS Microphone IC

3SM123C4T1VA-R

WWW.3SYSTEM.COM.TW

Reflow Profile

Table 5. Recommended Reflow Profile Limits

Profile Feature

Pb-free

Preheat

Minimum temperature (Tsmin)

Maximum temperature (Tsmax)

Time (ts)

Average Ramp up rate (Tsmax to Tp)

Melting area

Melting temperature (TL)

Time maintained above melting (tl)

Peak Temperature (TP)

Time within 5℃ of actual peak temperature

Ramp down rate

Time 25℃ to peak temperature

150 ℃

200 ℃

60~180 sec

3 ℃/sec

217 ℃

60~150 sec

260 ℃

20~40 sec

6 ℃/sec maximum

8 minute maximum

Notes: Based on IPC/JDEC J-STD-020 Revision F.

All temperatures refer to topside of the package, measured on the package body surface.