Recommended Soldering Condition 1

（

1） Solder ：

0.12~0.18mm Thread solder (Sn96.5:Ag3.5) with soldering flux in the core.

Rosin-based and non-activated flux is recommended.

（

2） Preheating

The Varistors shall be preheated so that Temperature Gradient between the devices and the tip of

soldering iron is 150℃ or below.

（

3）Soldering Iron

Rated Power of 20w max with 3mm soldering tip in diameter.

Temperature of soldering iron tip 300℃ max ( The required amount of solder shall be melted in advance

on the soldering tip.)

（

4）Cooling :After soldering. The Varistors shall be cooled gradually at room ambient temperature.

The IR reflow and temperature of Soldering for normal

☆

IR reflow Process suggestion profile

(1) Soldering recommend is Sn 63: Pb 37

(2) Ramp-up rate (183℃ to Peak) + 3℃/second max

(3) Temp. maintain at 125 +/-25℃ 120 seconds max

(4) Temp. maintain above 183 ℃ 60-150 seconds

(5) Peak temperature range

225℃ +/-10 ℃( 215℃~235℃) time within 5 ℃ of actually peak temperature (tp)

10-20 seconds

(6) Ramp down rate +6 ℃/second max.

* Recommended Soldering Condition 1

（

1） Solder ：

0.12~0.18mm Thread solder

(Sn63:pb 37) with soldering flux in the core. Rosin-based and

non-activated flux is recommended.

（

2） Preheating

The Varistors shall be preheated so that Temperature Gradient between the devices and the tip of

soldering iron is 150℃ or below.

（

3）Soldering Iron

Rated Power of 20w max with 3mm soldering tip in diameter.

Temperature of soldering iron tip 300℃ max ( The required amount of solder shall be melted in advance

on the soldering tip.)

（

4）Cooling

After soldering. The Varistors shall be cooled gradually at room ambient temperature.

Peak temp. 225℃

※

Perform adequate test in advance as the reflow temperature profile will vary according to the conditions of

the manufacturing process, and the specification of the reflow furnace.

SMD Transient Voltage Suppressors

Recommendation for Soldering