JVC VN-V685U White paper: Thermal Simulation is Key to JVC CCTV Product Relia - Page 2

Selecting the right components is an important first step. For example, not all capacitors are

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Selecting the right components is an important first step. For example, not all capacitors are alike. Some manufacturers prefer ceramic capacitors, which can be more tolerant of heat but are highly intolerant of voltage fluctuations. Outside the product design laboratory, power fluctuations can be a regular occurrence. JVC uses electrolytic capacitors that are far more reliable under power fluctuations (and are carefully tested for heat tolerance). Better parts only provide part of the key to better reliability. The internal temperature of products significantly affects how long these components will last. As illustrated in Figure 1, some repercussions of excessive heat include: ・failure of solder joints due to component swelling. ・shorter component life span. ・loss of mechanical safety due to component degradation. Figure 1. Failure of solder joints (where the components connect to the board) due to component swelling. Reliability White Paper - Page 2 of 7 ©2011 JVC Professional Products Company

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Selecting the right components is an important first step. For example, not all capacitors are
alike. Some manufacturers prefer ceramic capacitors, which can be more tolerant of heat but
are highly intolerant of voltage fluctuations. Outside the product design laboratory, power
fluctuations can be a regular occurrence. JVC uses electrolytic capacitors that are far more
reliable under power fluctuations (and are carefully tested for heat tolerance).
Better parts only provide part of the key to better reliability. The internal temperature of
products significantly affects how long these components will last. As illustrated in Figure 1,
some repercussions of excessive heat include:
・
failure of solder joints due to component swelling.
・
shorter component life span.
・
loss of mechanical safety due to component degradation.
Figure 1. Failure of solder joints (where the components connect to the board) due to component swelling.
Reliability White Paper – Page
2
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7
©2011 JVC Professional Products Company