Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
Etmax
User Rank
Author
re: Toyota accelerations revisited—hanging by a (tin) whisker
Etmax   1/11/2012 11:39:04 AM
NO RATINGS
Please don't forget that apart from needing almost twice the energy in production (I thought carbon emissions were to be avoided) lead free PCB's generally don't survive rework/repair due to copper migration from the PCB surface to the tin. This results in more scrap/waste. Also I have read that lead doesn't leach out of solder in land fill (one of the excuses for RoHS) and there has been no noticeable increase in lead levels of people performing materials recovery (the other excuse for RoHS) That said, many of the other substances banned under RoHS legislation are a problem and the world is better without them, eg. Chromium VI and Cadmium.

MN0
User Rank
Author
re: Toyota accelerations revisited—hanging by a (tin) whisker
MN0   1/11/2012 10:15:07 AM
NO RATINGS
It's becoming increasingly obvious that the RoHS push for lead-free solder and platings was extremely poorly thought out. As well as the tin whisker problem, lead-free solder requires higher temperature soldering (putting more stress on components), and solder joints are much more likely to suffer mechanical fatigue. Just another example of environmentalists creating huge problems in the "real world".

eembedded_janitor
User Rank
Author
re: Toyota accelerations revisited—hanging by a (tin) whisker
eembedded_janitor   1/10/2012 9:56:59 PM
NO RATINGS
Faults like tin whiskers are exactly the reason why the pedal sensor has two pots. The values of the two pots are compared against an expected profile and if there is any discrepancy, the sensor is deemed to be faulty and power is limited to "limp home" mode. By the way, more modern sensors use hall effect sensing which is not prone to mechanical damage like pot wipers.

<<   <   Page 2 / 2


Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Radio
LATEST ARCHIVED BROADCAST

What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.

Brought to you by:

Like Us on Facebook
Special Video Section
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27
The LT8602 has two high voltage buck regulators with an ...
05:18
Silego Technology’s highly versatile Mixed-signal GreenPAK ...
The quality and reliability of Mill-Max's two-piece ...
01:34
Why the multicopter? It has every thing in it. 58 of ...
Security is important in all parts of the IoT chain, ...
Infineon explains their philosophy and why the multicopter ...
The LTC4282 Hot SwapTM controller allows a board to be ...
This video highlights the Zynq® UltraScale+™ MPSoC, and sho...
Homeowners may soon be able to store the energy generated ...
The LTC®6363 is a low power, low noise, fully differential ...
See the Virtex® UltraScale+™ FPGA with 32.75G backplane ...
Vincent Ching, applications engineer at Avago Technologies, ...