SM1812A270K [SUNMATE]

METAL OXIDE VARISTORS;


型号：	SM1812A270K
厂家：	SUNMATE electronic Co., LTD
描述：	METAL OXIDE VARISTORS
文件：	总4页 (文件大小：996K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SM1812A Series

METAL OXIDE VARISTORS

Features

EIA size:1812

Variable capacitance

Operating voltage: 18Vdc ~385Vdc

High surge suppress capability

Bidirectional and symmetrical V/I characteristics

Multilayer ceramic construction technology

RoHS & Halogen Free (HF) compliant

Operating temperature range: -40℃ ~ +85℃

Storage temperature range: -40℃ ~ +125℃

Applications

Used to Help Achieve Electromagnetic Compliance of End Products

Provides On-Board Transient Voltage Protection for ICs, CMOS and MOSFET

Suppression of Inductive Switching or Other Transient Events Such as EFT and Surge Voltage at the Circuit Board.

Protection of Components and Circuits Sensitive to ESD Transients Occurring on Power supplies, Control and Signal

Lines.

Part Number Code

Packaging

1812

Standard

Varistor Voltage

24V

Tolerance

LOGO

K:±10%

Electrical Characteristics

Max.

Energy

(10/1000μs)

Max. Clamping

Voltage

Withstanding

Surge Current

(8/20μs)

Varistor

Voltage

Max. Allowable

Voltage

Type Number

(8/20μs)

V_1mA(V)

V_AC(V)

V_DC(V)

(J)

1.5

2.3

I_P(A)

V_C(V)

I(A)

500

800

500

400

SM1812A240K

SM1812A270K

21.6~27

26.4~33

28.8~36

33.6~42

36~45

SM1812A300K

SM1812A360K

SM1812A390K

45.6~57

50.4~63

54~67.5

57.6~72

67.2~84

72~90

125

138

148

158

184

198

214

224

247

280

290

340

360

415

475

650

710

775

SM1812A470K

SM1812A530K

SM1812A560K

SM1812A600K

SM1812A680K

SM1812A760K

SM1812A820K

SM1812A900K

SM1812A950K

SM1812A101K

SM1812A121K

SM1812A151K

SM1812A181K

SM1812A241K

SM1812A271K

SM1812A391K

SM1812A431K

SM1812A471K

78~97.5

81.6~102

90~112.5

102~127.5

108~132

135~165

162~198

216~264

243~297

351~429

387~473

423~517

110

150

200

225

320

350

385

115

150

175

250

275

300

Environmental Performance

Item

Specifications

Test Condition

Bias Humidity

Thermal Shock

Full Load Voltage

V_V/ V_V≤±10%

90%RH, 40ºC, Working Voltage, 1000 hrs

-40ºC to 85ºC,30min.cycle,5 cycles

Working Voltage,85ºC,1000 hrs

General Technical Data

Operating Temperature

Storage Temperature

Response Time

-40~+85 ºC

-40~+125 ºC

<1ns

Solderability

245±5 ºC, 3±1sec

260±5 ºC,10±1sec

5~40ºC

Solder leach resistance

Storage Temperature

Relative Humidity

Storage Time

To 65%

Taping Package Storage Condition

12 Months max

Soldering Parameters - Reflow Soldering (Surface Mount Devices)

Reflow Condition

Pb - Free assembly

150°C

T_P

Critical Zone

Ramp-up

-Temperature Min (T_s(min)

)

-Temperature Max (T_s(max)

- Time (min to max) (t_s)

T_Lto T_P

T_L

Pre

Heat

)

200°C

T_S(max)

60 -180 Seconds

Ramp-down

Average ramp up rate ( Liquids

Temp T_L) to peak

3°C/second max

217°C

T_S(min)

T_S(max)to TL - Ramp-up Rate

- Temperature (T_L)

Preheat

Reflo

(Liquids)

Time to peak temperature

Time

(t 25℃ to peak)

- Time (min to max) (t_s)

60 -150 Seconds

Peak Temperature (T_P)

260 +0/-5°C

Precaution for soldering

Time within 5°C of actual peak

Temperature (t_p)

20 - 40 Seconds

Note that this product will be easily damaged by rapid heating, rapid

cooling or local heating.

Ramp-down Rate

6°C/second max

8 minutes Max

260°C

Do not give heat shock over 100°C in the process of soldering. We

recommend to take preheating and gradual cooling

Time 25°C to peak Temperature (T_P)

Soldering gun procedure

Do not exceed

Note the follows, in case of using solder gun for replacement.

1)The tip temperature must be less than 280 for the period within 3

seconds by using soldering gun under 30W

2) The soldering gun tip shall not touch this product directly.

Soldering volume

Note that excess of soldering volume will easily get crack the body of

this product.

Dimensions And Recommended Pad Layout

Symbol

Millimeters

4.50±0.40

3.20±0.20

3.40

Inches

0.177±0.016

0.126±0.008

0.134

T_max.

0.60±0.25

3.7

0.024±0.01

0.146

5.4

0.213

3.2

0.126

Recommended Soldering Pad Layout

Taping and Reel Specifications

Symbol

Millimeters

12.00±0.20

1.75±0.10

5.50±0.05

1.55±0.05

Φ1.50±0.05

8.00±0.10

4.00±0.05

2.00±0.05

5.45±0.10

4.20±0.10

Inches

0.472±0.008

0.069±0.004

0.217±0.002

0.061±0.002

Φ0.059±0.002

0.315±0.004

0.157±0.002

0.079±0.002

0.215±0.004

0.165±0.004

Packing Specifications

Symbol

Millimeters

13.5±0.1

Inches

0.531±0.004

7.008±0.079

Φ2.362±0.02

0.515±0.008

178±2.0

Φ60.0±0.5

13.08±0.2

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)

1812

1000

Standard Packing Quantity (PCS/reel)

相关型号：