Approval sheet

Page 5 of 7

ASC_VH0201 Green Series- V04

Aug.2018

2.

Resistance to soldering heat-High Temperature Resistance:260℃, 10 sec-3times.

3.

Hand Soldering

In hand soldering of the Varistors. Large temperature gradient between preheated the Varistors and the tip of

soldering iron may cause electrical failures and mechanical damages such s crackings or breakings of the devices.

The soldering shall be carefully conditions for hand solding.

3-1 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 380℃max,3-5sec ( 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.

3-2 Recommended Soldering Condition 2（Without preheating）

(1) Solder iron tip shall not directly touch to ceramic dielectrics.

(2) Solder iron tip shall be fully preheated before soldering while soldering iron tip to the external electrode of

Varistors.

4.

Post Soldering Cleaning

4-1 Residues of corrosive soldering fluxes on the PC board after cleaning may greatly have influences on the

electrical characteristic and the reliability (such as humidity resistance)of the Varistors which have been mounted

on the board. It shall be confirmed that the characteristic and the reliability of the devices are not affected by the

applied cleaning conditions.

4-2 When an ultrasonic cleaning is applied to the mounted Varistors on PC Boards. Following conditions are

recommended for preventing failures or damages of the devices due to the large vibration energy and the

resonance caused by the ultrasonic waves

(1) Frequency 29MHz max

(2) Radiated Power 20w/lithr max

(3) Period 5minuets max

ORDERING CODE

VH

0201

M

050

C

G

T

330

Type

Code

Chip

Size

Style

Rated

Voltage

Control Code

Termination

Packing

Capacitance Code (pF)

Internal

Code

V: Walsin

Varistor

H: High

Speed or

RF

0201

0402

0603

M:

Multilayer

A:

Array

050 = 5.5V

120 = 12V

C: Capacitance

control code for

ESD protection

varistor

G:Green

Material

T:

Reeled

B:

Bulk

Two significant digits

followed by number of zeros

2R5 = 2.5pF (when C< 10pF)

100 = 10 x 10

150 = 15 x 10

220 = 22 x 10

330 = 33 x 10

560 = 56 x 10

101 = 10 x 10

Blank: None

N: New item

Minimum Ordering Quantity: 15000 pcs per reel.