Datasheet > VJ1812A220MFAAR4X

VJ1812A220MFAAR4X

更新时间： 2023-05-15 00:00:00

品牌	Logo	应用领域
威世 - VISHAY		/
页数	文件大小	规格书
8页	144K
描述
CAPACITOR, CERAMIC, MULTILAYER, 50 V, C0G, 0.000022 uF, SURFACE MOUNT, 1812, CHIP, HALOGEN FREE AND ROHS COMPLIANT

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VJ OMD - C0G (NP0)

Surface Mount Multilayer Ceramic Chip Capacitor Solutions

Vishay Vitramon

for Boardflex Sensitive Applications

BOARDFLEX SENSITIVE APPLICATIONS - SOLUTION:

A predominant failure mode in multilayer ceramic chip capacitors is cracking caused by board flexure. Cracks can then create a

path for current to pass from one electrode through the dielectric to an opposing electrode or from the terminations at one end of

the MLCC through the dielectric to an opposing electrode. This may subsequently result in capacitance loss, leakage - low

Insulation Resistance (IR) - and/or more seriously, high current shorts. A short circuit condition in the surface mounted capacitors

can cause further failures of downstream components. Vishay’s Open Mode Design Capacitors (VJ OMD - Cap series) reduce

the risk of these destructive conditions through MLCC designs that prevent board flexure cracks reaching the opposing electrode.

VJ OMD - Cap MLCCs reduce the risk of early field failures associated with board flex cracks. However, it is important to note

that even in the open mode designs the presence of flexure related cracks can cause capacitance loss leading to localized

stresses on the parts. eventually, depending on the application environment, including such factors and high voltage pulse

frequency and thermal cycling this may lead to internal breakdown of the component.

POLYMER TERMINATION

Polymer termination provides additional protection against board flexure damage by absorbing greater mechanical and thermal

stresses. Components can be packaged, transported, stored and handled the same standard terminated product. Wave and

reflow soldering of MLCC does not require modification to equipment and/or process. Polymer termination greatly reduces the

risk of mechanical cracking however it does not completely eliminate.

STANDARD TERMINATION

OMD CAP PLUS POLYMER TERMINATION

Exposed Electrodes = Electrical short

No Exposed Electrodes = No Electrical short

BEND TEST RESULTS 2220 CASE SIZE

100 %

Standard Termination

90 %

80 %

70 %

60 %

50 %

40 %

30 %

20 %

10 %

0 %

Polymer Termination

Log. (Standard Termination)

Log. (Polymer Termination)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

BOARD FLEXURE in (mm)

www.vishay.com

For technical questions, contact: mlcc@vishay.com

Document Number: 45047

Revision: 26-Feb-10

1...3 4 567 8

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