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貼片自恢復保險絲SMD2018

產(chǎn)品信息
產(chǎn)品類別:貼片自恢復保險絲
關(guān)鍵詞:SMD2018,保險絲,恢復,貼片
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發(fā)布時間:2022-10-24 15:32:58
全國服務熱線:13549460265
產(chǎn)品詳情

Performance Specification                                                  

Model

Maximum

Resistance

V max

Imax

I hold

I trip

Pd

Time To Trip

Marking

@25°C

@25°C

Typ.

Current

Time

R i min

R1max

(V dc)

(A)

(A)

(A)

(W)

(A)

(Sec)

(W)

(W)

 SMD2018-030SF

030

60

10

0.30

0.60

0.9

1.5

3.00

0.500

2.300

 SMD2018-050SF

050

60

10

0.55

1.20

1.0

2.5

3.00

0.200

1.000

 SMD2018-075SF

075

60

10

0.75

1.50

1.1

8.0

0.30

0.110

0.630

 SMD2018-100SF

100

15

35

1.10

2.20

1.1

8.0

0.40

0.060

0.360

 SMD2018-100SF33V

100

33

35

1.10

2.20

1.1

8.0

0.40

0.060

0.360

 SMD2018-150SF

150

15

35

1.50

3.00

1.1

8.0

0.80

0.050

0.170

 SMD2018-200SF

200

10

35

2.00

4.00

1.1

8.0

2.40

0.030

0.100

       V max  = Maximum operating voltage device can withstand without damage at rated current (Imax).

       I max   = Maximum fault current device can withstand without damage at rated voltage (V max).

       I hold   = Hold Current. Maximum current device will not trip in 25°C still air.

       I trip    = Trip Current. Minimum current at which the device will always trip in 25°C still air.

       Pd      = Power dissipation when device is in the tripped state in 25°C still air environment at rated voltage.

       Ri min/max  = Minimum/Maximum device resistance prior to tripping at 25°C.

       R1max  = Maximum device resistance is measured one hour post reflow.

       CAUTION : Operation beyond the specified ratings may result in damage and possible arcing and flame.


Environmental Specifications                                                

Test

Conditions

Resistance change

Passive aging

+85°C, 1000 hrs.

I HOLD/I TRIP PASS

Humidity aging

+85°C, 85% R.H. , 168 hours

I HOLD/I TRIP PASS

Thermal shock

+85°C to -40°C, 20 times

I HOLD/I TRIP PASS

Resistance to solvent

MIL-STD-202,Method 215

電阻不變化

Vibration

MIL-STD-202,Method 201

電阻不變化

Ambient operating conditions : - 40 °C to +85 °C

Maximum surface temperature of the device in the tripped state is 125 °C



Thermal Derading Chart                                                  

       Recommended Hold Current(A) at Ambient Temperature(°C)

Model

Ambient Operation Temperature

-40°C

-20°C

0°C

25°C

40°C

50°C

60°C

70°C

85°C

 SMD2018-030SF

0.48

0.42

0.35

0.30

0.24

0.21

0.17

0.15

0.10

 SMD2018-050SF

0.87

0.77

0.67

0.55

0.46

0.41

0.36

0.31

0.23

 SMD2018-075SF

1.19

1.05

0.91

0.75

0.61

0.54

0.47

0.41

0.32

 SMD2018-100SF

1.71

1.52

1.32

1.10

0.94

0.84

0.74

0.64

0.50

 SMD2018-150SF

2.38

2.10

1.82

1.50

1.27

1.13

0.99

0.85

0.64

 SMD2018-200SF

2.95

2.65

2.35

2.00

1.74

1.59

1.44

1.29

1.06







Thermal Derating Curve                                                  

     


Average Time-Current Curve                                                

     


Soldering Parameters  



Profile Feature

Pb-Free Assembly

Average Ramp-Up Rate(Ts max to T p)

3/second mac.

Preheat

  -Temperature Min(Ts min)

  -Temperature Max(Ts max)

  -Time(Ts min to Ts max)

150

200

60~180 seconds

Time maintained above:

  -Temperature(TL)

  -Time(tL)

217

60~150 seconds

Peak Temperature(Tp)

260

Ramp-Down Rate

6/second max.

Time 25 to Peak Temperature

8 minutes max

Storage Condition

0~30,30%~60%RH

        Recommended reflow methods: IR, vapor phase oven, hot air oven, N2 environment for lead-free

      Recommended maximum paste thickness is 0.25mm

      Devices can be cleaned using standard industry methods and solvents.

      Note 1:All temperature refer to topside of the package, measured on the package body surface.

      Note 2: If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements.



Physical Dimensions(mm.)  


                                                

 

        

Model

A

B

C

D

E

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Min.

 SMD2018-

4.72

5.44

4.22

4.93

0.50

1.20

0.30

0.25

       Termination Pad Characteristics

       Terminal pad materials:Tin-plated Nickel-Copper

       Terminal pad solder ability:Meets EIA specification RS186-9E and ANSI/J-STD-002 Category 3.


Recommended Pad Layout (mm.)                                         

    





注:在此印錫面積條件下,推薦鋼網(wǎng)厚度為≧0.12MM(鋼網(wǎng)厚度不夠要增大刷錫面積)


Packaging Quantity                                                       

Part Number

Quantity

 SMD2018-0100SF33V

2500 pcs/reel

Tape & reel packaging per EIA481-1



Tape And Reel Specifications (mm)       

Governing Specifications

EIA 481-1

W

12.0 ± 0.2

P0

4.0 ± 0.10

P1

8.0 ± 0.10

P2

2.0 ± 0.05

A0

4.40 ± 0.10

B0

5.50 ± 0.10

B1max.

8.20

D0

1.50 + 0.1, -0

F

5.5 ± 0.05

E1

1.75 ± 0.10

E2min.

10.25

T

0.6

T1max.

0.1

K0

1.36 ± 0.1

Leader min.

390

Trailer min.

160

Reel Dimensions

A max.

178

N min.

50

W1

12.4 ± 0.5

W2

18.4 ± 0.5

Storage And Handling

? Storage conditions0~30, 30%~60% R.H.

? Devices may not meet specified performance

  if storage conditions are exceeded.




注意事項                                                                

PPTC使用注意事項:

·PPTC為熱敏元件,對環(huán)境溫度比較敏感,建議在PPTC周圍不要設(shè)計熱源元件,盡量減少外部熱源的影響。

·請在規(guī)格書規(guī)定的參數(shù)下(<10%)使用,超出電壓電流規(guī)格值,會導致PPTC出現(xiàn)電弧,阻值升高,甚至燒片。

·規(guī)格書的電氣特性,均是基于在大容指定測試板經(jīng)過一次回流焊之后的測試;如果客戶有二次回流焊或者注塑點膠等其他熱工序,會對上述參數(shù)有一定程度的衰減,需要驗證其適用性。

·PPTC貼片產(chǎn)品是為SMT工藝設(shè)計的封裝形式,焊接工藝為回流焊;要求客戶遵守我們推薦的焊盤布局和回流焊配置文件。不正確的電路板布局或回流配置可能會對PPTC的可焊性性能產(chǎn)生負面影響。焊接工藝可參考大容推薦的回流焊曲線。如果回流焊溫度超過推薦的值,PPTC將有可能受到損傷。使用手工焊及波峰焊接PPTC可能會導致產(chǎn)品焊后電阻超出規(guī)格。

·某些注塑料、單組份、雙組份固化膠粘劑、硅膠、侵蝕性溶劑污染PPTC材料破壞芯片,需要對注塑料膠料等材料牌號以及應用參數(shù)(如溫度、時間等)進行驗證,以確保產(chǎn)品及工藝的匹配性,確認不會影響PPTC性能之后方可使用。PPTC在充電線端應用中,建議使用PP類材料做內(nèi)膜,禁止使用TPE類與PVC類等材料做內(nèi)膜。

·PPTC貼裝或使用過程中,不建議使用洗板水或其他清洗劑進行清洗。如必須使用,需要驗證各類清洗劑、洗板水以及溶劑的適用性,確認不會影響PPTC性能之后方可使用。已知對PPTC有影響的化學藥品包括但不于醚類、苯類、酮類以及脂類等較強溶解性、破壞性的有機化合物,清洗后將產(chǎn)品放置于敞開的環(huán)境中至少24小時,將殘留的溶劑進行充分的揮發(fā)。

·裝配過程中,避免用暴力砸、擠、壓、拉、扭、刺等方式作用PPTC本體,以免引起PPTC 性能衰減。

·PPTC元件是為電路中偶爾出現(xiàn)的過流而設(shè)計的,不建議用在連續(xù)且持續(xù)過流的電路中。

·大容SMD PPTC濕敏等級為2級,為密封包裝??蛻羧缭趲齑嬷邪l(fā)現(xiàn)有包裝破損的,立即將產(chǎn)品隔離處理;使用時如有余料,需恢復之前包裝狀態(tài),做密封保存,否則會影響產(chǎn)品性能導致焊后電阻越規(guī)格。

·產(chǎn)品廢棄時,可按照一般電子廢棄物處理,具體材料組成可參見MSDS



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