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Smart Reasoning:

C&E

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Qaagi - Book of Why

Causes

Effects

heat issuescausingsolder failure

cause the motor drive current to increasecausingsolder failure

This structuremay causesoldering failure

the mismatch in CTE of different componentscausesolder failure

no clean temperature stable low temp lead free solder eutectic temperatureleadfree solder

dueto leadfree solder

goingto leadfree solder

Pressure on the broochcan causesolder to break

the moveto leadfree solder

using kesterleadfree solder

50/50 solderleadfree solder

While not as prevalent as thermomechanical solder fatigue , vibration fatigue and cyclic mechanical fatigue are also knownto causesolder failures

Wire cutters , safety goggles ,leadfree solder

Pura ... We are changingto leadfree solder

heatingcan causesolder points

thingspaintedsolder points

heat stress accelerated by(passive) caused bysolder deformation

excessive gold in a solder jointcan causesolder embrittlement

that ... to solder to eithercausessolder embrittlement

eithercausessolder embrittlement

of solder alloys(passive) are composedSolder preforms

solderingcausingsolder voids

Excess heatingcausessolder brittleness

the jointswould causesolder voids

heatingto causesolder reflow

too small copper padseventually causingempty soldering

too small copper padscausingempty soldering

the optical elements ... sufficientto causesolder reflow

to seal specific packages(passive) are designedSolder preforms

by the exposure of the base material(passive) caused bysolder wettability

the stencil printing process(passive) was ... caused bysolder splatter

Transfer overmoldingcausedsolder extrusions

by conventional processes(passive) caused bysolder wettability

tiles (may leadto solder voiding

Too much solder pastewill causesolder

the solder ironcausingsolder t

Rapid heating of soldercausedsolder

to get sufficient heat into the leadto causesolder

of tin and lead alloys(passive) may be composedSolder

to have thixotropic property ( time - dependent shear thinning property(passive) are designedSolder pastes

to the motorsleadsto the motors

for us hackers to tap into an i / o linedesignedfor us hackers to tap into an i / o line

to the bottom of the bulbsleadsto the bottom of the bulbs

from the introduction of the SMT assembly methodresultingfrom the introduction of the SMT assembly method

to be soft soldereddesignedto be soft soldered

diode failurecausediode failure

failure in electric connection between themay causefailure in electric connection between the

to leaksleadto leaks

jointscan leadjoints

device resetscausingdevice resets

ShortCausesShort

I 1 E 1 E 2leadsI 1 E 1 E 2

in attachment between the chip and the substrateresultsin attachment between the chip and the substrate

This Pin(passive) was discovered byThis Pin

a bridge to form between leadscausesa bridge to form between leads

different types of defectscausingdifferent types of defects

failurecausingfailure

excessive heatingwill causeexcessive heating

a reduction of the adhesive strength of the terminationswill causea reduction of the adhesive strength of the terminations

the machinery breakdown(passive) caused bythe machinery breakdown

of Sncomposedof Sn

of Sn and Pbcomposedof Sn and Pb

a malfunctionmay causea malfunction

of the lasersleadsof the lasers

for electronic usedesignedfor electronic use

to enhance reliability and heat transfer through the reduction of voiding underdesignedto enhance reliability and heat transfer through the reduction of voiding under

to enhance reliability and heat transfer through the reductiondesignedto enhance reliability and heat transfer through the reduction

to meet the voiding requirements of today 's high reliability applicationsare designedto meet the voiding requirements of today 's high reliability applications

bad joint quality due to insufficient soldercausesbad joint quality due to insufficient solder

to enhance reliability and heat transfer through the reduction of voiding under bottom termination componentsdesignedto enhance reliability and heat transfer through the reduction of voiding under bottom termination components

the low resistance problem(passive) Could ... be caused bythe low resistance problem

to dry solder jointsleadingto dry solder joints

to the pads on the back of the board with the soldering ironleadsto the pads on the back of the board with the soldering iron

connection failures of the solder or chip displacementwould ... causeconnection failures of the solder or chip displacement

free solderleadfree solder

of gold / lead / tin alloy , indium , or indium / tin alloy as the solder materialcomposedof gold / lead / tin alloy , indium , or indium / tin alloy as the solder material

to the pads with the soldering ironleadsto the pads with the soldering iron

the solder to crackcan causethe solder to crack

without stand - offleadswithout stand - off

the wire to break just past where the solder endswill causethe wire to break just past where the solder ends

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Smart Reasoning:

C&E

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