Surface Mount Multilayer Varistor

SC0805ML - SC2220ML Series

Description

The SC Series is based on Multilayer fabrication technology.

These components are designed to suppress a variety of
transient events, including those specified in IEC 61000-4-2 or
other standards used for Electromagnetic Compliance (EMC).
The SC Series is typically applied to protect integrated circuits
and other components at the circuit board level. It can operate
over a wider temperature range than zener diodes.

Features

u Rectangle, sizes serialization for hybrid integrated circuit

or printed circuit surface mount components Equivalent Circuits
u There are many side electrode lead-out material,
particularly suitable for surface mount technology for
solderability and resistance to soldering heat of the
stringent requirements
u Fast response (<1ns)
u Low leakage current, low clamping voltage
u Suitable for reflow, wave soldering and hot air hand
soldering

Applicable
u Application for Mother Board, Notebook, Cellular Phone,
PDA, handheld device, DSC, DV, Scanner, and Set- Top
Box…etc.
u Suitable for Push-Button, Power Line and Low
Frequency single line over-voltage protect.

Explanation of Part Number

SC 0805 ML 080 M
(1) (2) (3) (4) (5)

(1) Socay Logo

(2) Chip Size (EIA): 0402 / 0603
(3) Series Type: ML- Multilayer Varistor
0 0
(4) Varistor Voltage: Value - 080= 08X10 =8V, 120=12X10 =12V
(5) Varistor Voltage Tolerance: N - ±30%, M - ±20%, L - ±15%, K - ±10%

SOCAY Electronics Co., Ltd. www.socay.com

@SOCAY Electronics Co., Ltd. 2013
Revision November 28, 2013 1/8 Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Multilayer Varistor
SC0805ML - SC2220ML Series

Electrical Characteristics (25±5ºC)

SC0805ML Series
Varistor Clamping Peak Transient
Working Voltage Capacitance
Voltage Voltage Current Energy
<20μA
Test Condition @1mA DC 8/20μs 8/20μs 10/1000μs 1KHz
DC AC RMS
Symbol VDC VRMS VB VC IP ET CP
Volts Volts Volts Amps Joules
Units Volts pF
(Max.) (Max.) (Max.) (Max.) (Max.)
SC0805ML050M 3.3 2.0 4.0~6.0 10.0 40 0.1 1190~2210
SC0805ML080M 5.6 4.0 6.4~10.1 15.5 40 0.1 770~1430
SC0805ML120M 9.0 6.0 10.8~16.2 25.0 40 0.1 560~1040
SC0805ML150M 11.0 8.0 13.2~19.8 30.0 40 0.1 525~975
SC0805ML180K 14.0 11.0 16.8~25.2 40.0 40 0.1 434~806
SC0805ML240K 18.0 14.0 21.6~32.4 54.0 40 0.1 385~715
SC0805ML270K 22.0 17.0 26.4~39.6 65.0 40 0.1 336~624
SC0805ML330K 26.0 20.0 31.2~46.8 75.0 40 0.1 280~520
SC0805ML390K 30.0 25.0 36.0~54.0 85.0 40 0.1 210~390

SC1206ML Series
Varistor Clamping Peak Transient
Working Voltage Capacitance
Voltage Voltage Current Energy
<20μA
Test Condition @1mA DC 8/20μs 8/20μs 10/1000μs 1KHz
DC AC RMS
Symbol VDC VRMS VB VC IP ET CP
Volts Volts Volts Amps Joules
Units Volts pF
(Max.) (Max.) (Max.) (Max.) (Max.)
SC1206ML050M 3.3 2.0 4.0~6.0 10.0 100 1.0 3010~5590
SC1206ML080M 5.6 4.0 6.4~10.1 15.5 100 1.0 2170~4030
SC1206ML120M 9.0 6.0 10.8~16.2 25.0 100 1.0 1400~2600
SC1206ML180K 14.0 11.0 16.8~25.2 40.0 100 1.0 1120~2080
SC1206ML240K 18.0 14.0 21.6~32.4 54.0 100 1.0 980~1820
SC1206ML270K 22.0 17.0 26.4~39.6 62.0 100 1.0 910~1690
SC1206ML330K 26.0 20.0 31.2~46.8 73.0 100 1.0 770~1430
SC1206ML390K 30.0 25.0 36.0~54.0 85.0 100 1.0 700~1300
SC1206ML470K 39.0 30.0 46.8~70.2 105.0 100 1.0 560~1040
SC1206ML680K 56.0 40.0 67.2~100.8 150.0 100 1.0 300~500
SC1206ML101K 75.0 50.0 90.0~135.0 200.0 100 1.0 180~380

SOCAY Electronics Co., Ltd. www.socay.com

@SOCAY Electronics Co., Ltd. 2013
Revision November 28, 2013 2/8 Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Multilayer Varistor
SC0805ML - SC2220ML Series

Electrical Characteristics (25±5ºC) (Continue)

SC1210ML Series
Varistor Clamping Peak Transient
Working Voltage Capacitance
Voltage Voltage Current Energy
<20μA
Test Condition @1mA DC 8/20μs 8/20μs 10/1000μs 1KHz
DC AC RMS
Symbol VDC VRMS VB VC IP ET CP
Volts Volts Volts Amps Joules
Units Volts pF
(Max.) (Max.) (Max.) (Max.) (Max.)
SC1210ML180K 14.0 11.0 16.8~25.2 40 250 1.5 1190~2210
SC1210ML240K 18.0 14.0 21.5~32.4 51 250 1.5 532~988
SC1210ML270K 22.0 17.0 26.4~39.6 62.0 250 1.5 490~910
SC1210ML330K 27.0 20.0 32.4~46.8 75.0 250 1.5 476~884
SC1210ML390K 30.0 25.0 36.0~54.0 85.0 250 1.5 378~702
SC1210ML470K 40.0 30.0 48.0~86.4 105.0 250 1.5 336~624
SC1210ML560K 45.0 35.0 54.0~81.0 125.0 250 1.5 413~767
SC1210ML680K 56.0 40.0 67.2~100.8 150.0 250 1.5 280~520
SC1210ML101K 75.0 50.0 90.0~135.0 200.0 250 1.5 203~377

SC1812ML Series
Varistor Clamping Peak Transient
Working Voltage Capacitance
Voltage Voltage Current Energy
<20μA
Test Condition @1mA DC 8/20μs 8/20μs 10/1000μs 1KHz
DC AC RMS
Symbol VDC VRMS VB VC IP ET CP
Volts Volts Volts Amps Joules
Units Volts pF
(Max.) (Max.) (Max.) (Max.) (Max.)
SC1812ML240K 18.0 14.0 21.6~32.4 51.0 800 2.3 3080~5720
SC1812ML270K 24.0 18.0 28.8~43.2 67.0 800 2.7 2100~3900
SC1812ML330K 28.0 21.0 33.6~50.4 78.0 800 2..9 1820~3380
SC1812ML390K 30.0 22.0 36.0~54.0 83.0 800 2.9 1610~2290
SC1812ML560K 45.0 33.0 54.0~81.0 124.0 800 3.1 1260~2340
SC1812ML620K 48.0 35.0 57.6~86.4 132.0 800 3.2 910~1690

SOCAY Electronics Co., Ltd. www.socay.com

@SOCAY Electronics Co., Ltd. 2013
Revision November 28, 2013 3/8 Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Multilayer Varistor
SC0805ML - SC2220ML Series

Electrical Characteristics (25±5ºC) (Continue)

SC2220ML Series
Varistor Clamping Peak Transient
Working Voltage Capacitance
Voltage Voltage Current Energy
<20μA
Test Condition @1mA DC 8/20μs 8/20μs 10/1000μs 1KHz 1Vrms
DC AC RMS
Symbol VDC VRMS VB VC IP ET CP
Volts Volts Volts Amps Joules
Units Volts pF
(Max.) (Max.) (Max.) (Max.) (Max.)
SC2220ML240K 18.0 14.0 21.6~27.0 51.0 1200 5.8 9800~18200
SC2220ML270K 22.0 17.0 26.4~39.6 62.0 1200 7.2 7700~14300
SC2220ML330K 27.0 20.0 32.4~46.8 75.0 1200 7.8 7000~13000
SC2220ML390K 30.0 25.0 36.0~54.0 85.0 1200 7.8 6300~11700

SOCAY Electronics Co., Ltd. www.socay.com

@SOCAY Electronics Co., Ltd. 2013
Revision November 28, 2013 4/8 Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Multilayer Varistor
SC0805ML - SC2220ML Series

Dimensions

Size EIA Length (L) Width (W) Thickness (T)

(EIAJ) Inches Millimeters Inches Millimeters Inches Millimeters

L 0805
0.079±0.008 2.00±0.20 0.049±0.006 1.25±0.15 0.047 Max 1.20 Max
(2012)
W
1206
0.126±0.008 3.20±0.20 0.063±0.006 1.60±0.15 0.059 Max 1.50 Max
T (3216)
1210
0.126±0.008 3.20±0.20 0.098±0.008 2.50±0.20 0.059 Max 1.50 Max
(3225)
1812
0.177±0.008 4.50±0.20 0.126±0.008 3.20±0.20 0.079 Max 2.00 Max
(4532)
2220
0.224±0.008 5.70±0.20 0.197±0.008 5.00±0.20 0.098 Max 2.50 Max
(5750)

Soldering Recommendations

l Recommended solder Pad Layout

Size EIA A B C D
(EIAJ) Inches Millimeters Inches Millimeters Inches Millimeters Inches Millimeters

0805 (2012) 0.039~0.059 1.0~1.5 0.126~0.150 3.2~3.8 0.047~0.055 1.2~1.4 0.012~0.024 0.3~0.6

1206 (3216) 0.071~0.098 1.8~2.5 0.165~0.228 4.2~5.8 0.047~0.063 1.2~1.6 0.016~0.032 0.4~0.8

1210 (3225) 0.071~0.098 1.8~2.5 0.165~0.228 4.2~5.8 0.071~0.098 1.8~2.5 0.020~0.040 0.5~1.0

1812 (4532) 0.098~0.138 2.5~3.5 0.217~0.240 5.5~6.1 0.091~0.126 2.3~3.2 0.024~0.043 0.6~1.1

2220 (5750) 0.138~0.181 3.5~4.6 0.236~0.283 6.0~7.2 0.189~0.217 4.8~5.5 0.047~0.090 1.2~2.3

Avoid material run this area

l The solder paste shall be printed in a thickness of 150 to 200μm.

l The SIR test of the solder paste shall be done (Base on JIS-Z-3284)

l IR Soldering
Rapid heating, partial heating or rapid cooling will easily cause defect of the component. So preheating and gradual cooling
process is suggested. IR soldering has the highest yields due to controlled heating rates and solder liquidus times. Make sure
that the element is not subjected to a thermal gradient steeper than 4 degrees per second. 2 degrees per second is the ideal
gradient. During the soldering process, pre-heating to within 100 degrees of the solder peak temperature is essential to
minimize thermal shock.

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Revision November 28, 2013 5/8 Specifications are subject to change without notice.
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Surface Mount Multilayer Varistor
SC0805ML - SC2220ML Series

Soldering Recommendations (Continue)

250 (a) Preheat

Max. temperature 225ºC 1. The temperature rising speed is suggested to be
200 2~4 ºC /s
45-80
Seconds above 2. Appropriate preheat time will be from 60 to 120
Temperature (ºC)

solder melting point

150 seconds.
(b) Heating
Ramp rate <2 ºC /s
100 1. Careful about sudden rise in temperture as it may
Preheat dwell
worser the solder ability.
50 Preheat zone 2. Set the peal temperature in the range from 215 ºC
to 225 ºC.
0 (c) Cooling
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
1. Careful about slow cooling as it may cause the
Time (Minutes) position shift of component.

l 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 as cracking or breakings of the devices. The soldering shall be
carefully controlled and carried out so that the temperature gradient is kept minimum with following recommended conditions
for hand soldering.
(a) Recommended Soldering Condition 1
1. Solder：
1mm Thread solder (sn63:pb37) 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 ºC or below.
3. Soldering Iron
Rated Power of 20w max with 3mm soldering tip in diameter.
Temperature of soldering iron tip 300C 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.
(b) 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.

l Post Soldering Cleaning

(a) 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.
(b) 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

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@SOCAY Electronics Co., Ltd. 2013
Revision November 28, 2013 6/8 Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Multilayer Varistor
SC0805ML - SC2220ML Series

Surge Waveform

Wave shape “Short Circuit” (Current Isc)

IEC61000-4-5 Standards
I
SEVERITY LEVEL T1 T2
1.0
0.9 1 8μs 20μs

2 10μs 1000μs

0.5

0.1
0.0
T1 T
30% Max
T2

IEC 61000-4-2 Compliant ESD Current Pulse Waveform

Environmental & Reliability Testing

Characteristic Test method and description

The specimen shall be subjected to125±2℃ for 1000±2 hours in a thermostatic bath without load
High Temperature Storage and then stored at room temperature and humidity for 1 to 2 hours. The change of varistor voltage
shall be within 10%.

The temperature cycle of specified temperature shall Step Temperture Period

be repeated five times and then stored at room 1 -40±3℃ 30min±3
Temperature Cycle temperature and humidity for one two hours. The 2 Room Temperature 1~2hours
change of varistor voltage shall be within 10% and 3 125±2℃ 30min±3
mechanical damage shall be examined.
4 Room Temperature 1~2hours
After being continuously applied the maximum allowable voltage at 85℃ for 1000hours, the
High Temperature Load specimen shall be stored at room temperature and humidity for one or hours, the change of varistor
voltage shall be within 10%.
The specimen should be subjected to 40℃,90 to 95%RH environment, and the maximum
Damp Heat Load/
allowable voltage applied for 1000 hours, then stored at room temperature and humidity for one or
Humidity Load
two hours. The change of varistor voltage shall be within 10%.

The specimen should be subjected to -40℃, without load for 1000 hours and then stored at room
Low Temperature Storage
temperature for one two hours. The change of varistor voltage shall be within 10%.

General Technical Data

Operating Temperature -55~85ºC

Storage Temperature -55~150ºC
Response Time <1 ns
Solderability 245±5ºC, 3±1sec
Solder Leach Resistance 260±5ºC, 10±1sec

SOCAY Electronics Co., Ltd. www.socay.com

@SOCAY Electronics Co., Ltd. 2013
Revision November 28, 2013 7/8 Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Multilayer Varistor
SC0805ML - SC2220ML Series

Packaging Information

Carrier Tape Dimensions

Carrier tape transparent cover tape should be
Carrier Tape heat-sealed to carry the products, and the reel
should be used to reel the carrier tape.

The adhesion of the heat-sealed cover tape

shall be 40+20/-15 grams.

Both the head and the end portion of taping

shall be empty for reel package and SMT
auto-pickup machine. And a normal paper tape
shall be connected in the head of taping for the
operator handle.
Cover Tape
Unit: mm

D0
A0 B0 K0 T T1 D1 P1 P2 P0 W E F
Symbol +0.10
±0.10 ±0.10 ±0.10 ±0.05 ±0.05 ±0.05 ±0.10 ±0.05 ±0.050 ±0.20 ±0.10 ±0.05
-0.00
0805 1.42 2.30 1.04 0.22 0.10 1.50 1.00 4.00 2.00 4.00 8.00 1.75 3.50
1206 1.88 3.50 1.27 0.20 0.10 1.50 1.00 4.00 2.00 4.00 8.00 1.75 3.50
1210 2.18 3.46 1.45 0.22 0.10 1.50 1.00 4.00 2.00 4.00 8.00 1.75 3.50
1812 3.66 4.95 1.74 0.25 0.10 1.50 1.50 8.00 2.00 4.00 12.00 1.75 5.50
2220 5.10 5.97 2.80 0.25 0.10 1.50 1.50 8.00 2.00 4.00 12.00 1.75 5.50

Taping Reel Dimensions

Unit: mm Symbol A B C D W W1
0805 178.0±1.0 60.0±0.5 13.0±0.2 110.0±0.5 9.0±0.5 1.5±0.15
1206 178.0±1.0 60.0±0.5 13.0±0.2 110.0±0.5 9.0±0.5 1.5±0.15
1210 178.0±1.0 60.0±0.5 13.0±0.2 110.0±0.5 9.0±0.5 1.5±0.15
1812 178.0±1.0 60.0±0.5 13.0±0.2 110.0±0.5 13.6±0.5 1.5±0.15
2220 178.0±1.0 60.0±0.5 13.0±0.2 110.0±0.5 13.6±0.5 1.5±0.15

Taping Specifications
There Shall be the portion having no product in both the head and
the end of taping, and there shall be the cover tape in the heat of
taping.

Quantity of products in the taping package

SIZE EIA (EIAJ) 0805 (2012) 1206 (3216) 1210 (3225) 1812 (4532) 2220 (5750)
Standard Packing Quantity (PCS / reel) 3,000 3,000 2,000 1,000 1,000

The contents of a box : Label and Marking:

0805 Series: 6 reels / inner box The paper label shall be plastered on the obvious side of the reel,
1206 Series: 6 reels / inner box and the information show as right side
1210 Series: 6 reels / inner box
1812 Series: 6 reels / inner box
2220 Series: 6 reels / inner box

SOCAY Electronics Co., Ltd. www.socay.com

@SOCAY Electronics Co., Ltd. 2013
Revision November 28, 2013 8/8 Specifications are subject to change without notice.
Please refer to www.socay.com for current information.