Jul 28, 2004 if you need to fix joint, use either a vacuum solder sucker or solder braidwick to remove the old stuff, then re do the job. Reliability analysis of snpb and snagcu solder joints in fc. Playstation 2 lasers have a tendency to go bad, especially now that they have aged so much. Leadless packages with enhanced board level solder joint reliability. Tools adafruit guide to excellent soldering adafruit. A controlchart based method for solder joint crack detection. Wave soldering defects cracked joint on a printed circuit board. Mar 21, 2005 the main points of soldering are to clean the surfaces well immediately before applying flux, insert the pipe fully into the fitting, apply heat evenly around the joint until the joint is hot enough to melt the solder, keep the joint immobile while it cools naturally no water added. This eventually leads to crack initiation and propagation which can be. This page introduces major causes and countermeasures of solder crack in mlccs multilayer ceramic chip capacitors. Jan 29, 2012 once the water has been in the joint, the only think you can do to it is drain all of the water, then disassemble the joint completely, clean the old solder out of the fitting or use a new one, then redo the joint.
This method is based on the assumption that resistance will increase significantly or an electrical discontinuity will occur if there is a crack or cracks in a solder joint. These filler materials have good brazing properties and are suitable for placement in the joint or for manual feeding into the joint. For joining most ferrous and nonferrous metals except aluminum and magnesium. Technical stressstrain curves were recorded, for which the stress was defined with respect to the original area about 7 mm 2 of the solder joint. Ive heard around that theres a anti static point that needs to be soldered for it to work. Ps2 laser lens playstation 2 fat removing anti static. Experiment results fcbga test data with preload has been reported in 2. Last week i replaced the lens in my scph50k, it had a khs 400c too. Random voids generation and effect of thermal shock load. Totalconsole khs 400c playstation 2 fat laser lens for ps2 original version. Impact of cracking beneath solder pads in printed board. Solder fatigue crack initiation and growth was studied in wlcsp assemblies. Cold joints can usually be repaired by simply reheating the joint with a hot iron until the solder flows.
The melting point of solder depends upon the percent of the two metals used. Hand soldering on occasion, we have had to place a skip in our smt placement machine due to unavailability of a surface mount component. Crack length refers to the length of the crack near the interface with the board, as observed in a sectional view though the center of the joint, and is expressed as a percentage of the pad diameter. Cracked joint on a printed circuit board wave soldering. Solder reflow failures in electronic components during. How to remove the antistatic solder ball from a replacement laser for an xbox 360. Read 10589 times 0 members and 1 guest are viewing this topic. Solder can be a right pain if it starts leaking, i have just visited a customer with a leak in their under floor central heating pipes, the solder joint on a tee had gone. Solder joint reliability is often a pain point in the design of an electronic system. Is there a putty or something on the market to plug the joint. Khs 400c or khs 400b model lens are similar in this. Examples include triangular shaped bars for bar solder, green plastic containers for solder paste products as well as other labeling practices including the use of the leadfree symbol that is recommended in the ipcjedec jstd609 document see figure 61. The temperature should be set high enough so that the solder flows rapidly in the joint and you can complete each joint within 35 seconds. Proprietary information this guide may contain proprietary or protected information for access by authorized persons only.
The joint has failed due to expansion and contraction of the lead in the joint. Addressing the issues around solder joint voids in surface. Could selective soldering provide more consistent solder joints and thus reduce or eliminate the cracking. Details about ps2 khs 400b laser lens for sony ps2 playsation 2 v1 to v4 new. Skimp or cheat on any of these steps can give a bad joint. Mar 19, 2014 ok so the laser on my ps2 phat scph 30001 system failed so i bought a new one on ebay and it didnt work. A metallurgical approach to cracked solder joints observations made on the structure of failed joints lead to some useful conclusions but also indicate the need for more research by d. Leadless package soldering joint stress mechanism at pcb board level. Joint fracture caused by creep solder joint fracture caused by creep is especially important at temperatures higher than room temperature, but, with common solder alloys, such cracks may be formed even at room temperature. Understanding the reliability of solder joints used in. New khs400c laser lens driver for sony playstation 2 ps2. In this paper, crack propagation in solder joints made of two solder alloys, 62sn36pb2ag by weight, a commonly used solder paste for smt reflow applications, and 96. In these cases the shear strength of the solder is exceeded, resulting in fracture of the joint.
Fatigue crack propagation behavior of leadfree solder. We proposed two useful methods to keep off solder joints cracks during bonding. Can you give me a remedy for a weeping soldered joint without having to drain down the whole central heating system for one tiny leak. A large crack is observed between the remaining au layer and the ausn imc layer. Hello, i just bought a new khs 400c laser to replace my ps2 broken one and ive run into some trouble. New khs 400c laser lens driver for sony playstation 2 ps2 replacement. Solder reflow failures in electronic components during manual soldering alexander teverovsky, chris greenwell, frederick felt perot systemsnasa gsfc, code 562, parts, packaging, and assembly technologies office alexander. Understanding crack growth in solder joints is important for predicting the fatigue life of solder interconnects. Comparisons of solder joint failure criteria different electrical failure criteria, 20% resistance rise, 500.
The connection has an eggshaped, spherical or oval profile that follows the contour of the terminal and wire wrap. I have 4 ps2 models here in portugal and all came with khs 400c. Avoids static buildup nonflammable nonozone depleting moisture free zero residue safe on plastics chills down to 400c. Its in a tight spot and im wondering if it would be possible to fix without separating the joint. Voids in solder joints, by raiyo f, aspandiar, intel corp 2. The results show that estimated timetofailure based on the. Bhatti1, min pei2, and xuejun fan1 1intel corporation, ms ch5263, 5000 w chandler blvd, chandler, az 85226 2georgia tech, 801 ferst dr. I have another 30004r which came with khs 400c, and another 30004r motherboard i bought for partsrepair the dms4 one. Buy original replacement khs400c laser lens driver for sony ps2 fat optical. Prior to installation, you must remove this anti static solder point. This paper deals with brittle fracture of flipchip bga packages with electroless nickel immersion gold enig substrate pad finish.
I add some solder to connection so that heat transfers to solder joint and then i pull out bad cap easy. Contains additive that avoids static buildup, critical when working with esd sensitive components. Tin melts at 450 degrees f, and lead melts at 621 degrees f. Creep and failure of leadfree solder alloys materials technology. Khs400c laser lens pickup repair part replacement for.
Many researchers have used different failure criteria in the published solder joint reliability studies. For many through hole connectors one side is totally covered. Solder fatigue is the mechanical degradation of solder due to deformation under cyclic loading. Through hole connector solder joint hole fill when looking at ipc610d in relation to through hole connectors and class iii level soldering.
Finish by heating the fitting just before you touch solder to the joint. Details about khs 400c laser lens pickup repair part replacement for sony playstation 2 new khs 400c laser lens pickup repair part replacement for sony playstation 2 new item information. Reliability analysis of snpb and snagcu solder joints in fcbga packages with thermal enabling preload pardeep k. On gold surfaces goldindium intermetallics tend to be formed, and the joint then fails in the golddepleted zone and the. Samples were surface mounted to test boards, then extracted at regular intervals of thermal cycling. If your solder does not make good contact with the component lead and the pcb then you have a cold solder or cold joint. Any moisture in the pipes will create steam when heated and a small amount of steam will prevent a good solder joint. The maximum shear strain elongation relative to thickness of solder joints before fracture was measured to characterize this ductility, as shown in fig. Design and material parameter effects on bga solderjoint. Solder joint cracks caused by overloading are often the result of an accident or harsh treatment. Remember to remove antistatic solder joint before installation.
Study on solder joint reliability of fine pitch csp. Throughhole soldering high voltage terminations cont. Cracked joint on a printed circuit board wave soldering defects. Visit my cool website at see below for even more amazing stuff. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. Many cold joints such as the one pictured also suffer from too much solder. The micrograph clearly shows the crack between the contact area of the component and the solder. The customer called british gas who came and resoldered the joint, three weeks later the joint is leaking again, they called another plumber, same again now its my turn. Jan 24, 2008 i really cant see a solder joint in our setups reaching anywhere near 375f. Ok so the laser on my ps2 phat scph 30001 system failed so i bought a new one on ebay and it didnt work. What is the recommended inspection method to ensure the 75% fill requirement is being met. Crosssectioning and scanning electron microscopy sem is a destructive method.
Solder melting temperature what is it, and why is it. You probably had just a small whisker of solder making the connection and after a year of vibration in the dashboard, that whisker finally broke. Resoldering with leadtin solder forms indiumtin and indiumlead phases and leads to formation of cracks between the phases, joint weakening and failure. Outline this document includes figures and tables for solder joint acceptability criteria on a variety of component types. Youll see the stem packing sizzle as the torch approches the connection. Learn more about solder melting temperature in detail.
Sony khs400c replacement laser lens for ps2 playstation 2. Visit my cool website at net see below for even more amazing stuff. Addressing the issues around solder joint voids in surface mount products 1. For example, when using too much force to mount a soldered assembly in position in an enclosure, or when dropping a mobile phone. Crack initiation and growth in wlcsp solder joints request pdf. Solder follows heat, so heat from the side you do not have solder on, if you can for a pipe joint, for instance, heat the pipe mostly, a little bit away from the joint, and heat the fitting only a little, it will get hot. The most common way is through resistance measurement of a solder joint or a daisy chain. Cracking of a solder joint on a plated through joint is uncommon.
Major causes of solder cracks solder cracks on mlccs developed from severe usage conditions after going on the market and during manufacturing processes such as soldering. A first individual solder joint encapsulant adhesive dr. Having this point is one way to know that the lens is new. The boards are used in an automotive dash board application. California polytechnic state university, san luis obispo, ca 93407. Sony playstation 1 psu cracked solder joint repair youtube. Crack initiation and growth in wlcsp solder joints. You must remove the antistatic solder joint before installation to. Apparently, i wasnt aware that theres something called a anti static point on the laser and im not sure where its located or how to remove it.
Solder joints pressure ratings engineering toolbox. This provides a more reliable solder joint and potentially allows for easy rework since the pad will extend outside the package. Solder joints and their pressure ratings according asme b16. Fatigue damage in solder joints materials technology eindhoven. Playstation 2 mechacon adjustment program pmap page 4. Ps2 khs 400b laser lens for sony ps2 playsation 2 v1 to v4 new. Thermal mismatch between ceramic ball grid array cgba components and organic printed boards not only causes fatigue of the solder joints when exposed to thermal changes, but may also cause cracking of the printed board laminate beneath solder pads. The crack area as percentage of total solder joint area is plotted in figure 2. Jlead components gull wing components class 2 class 3 photos area array components jlead components gull wing components class 2 class 3 photos end joint width c the width of the solder joint at its narrowest point must be a minimum of 50% the width of the component termination w, or 50% of the width of the land p, whichever is less. Expert panel responses that solder joint appears to have been defective from the getgo. In order to meet the demand of fine pitch and 3d package, eliminate solder joint crack, solder joint voids and complex underfilling process, and improve solder joint reliability.
Mechanism of solder joint cracks in anisotropic conductive. Playstation 2 fat lens khs 400c or khs 400b new lens have anti static solder point must remove duration. Novick introduction in the past five years, considerable attention has. Maybe the parts you are trying to solder may have oxide or just gunk on them that is preventing a good soldering job. Figure 3 shows the results for fatigue crack growth in a eutectic snpb solder joint on cu pads. If i just cleaned the joint as it is, applied flux and solder is that likely to fix it. A controlchart based method for solder joint crack. The cusoldercu sandwiches were mounted in a tensile test machine and sheared parallel to the cu plates at a constant rate of 0. View a shows the solder ball with the underside of the ripped off pad and view b shows the location on the pcb where the ball was attached there is not much written about laminate cracking beneath solder pads in the literature. Analysis of crack growth in solder joints deepdyve. By far the most preferable solder for use in stained glass is called 6040 solid core solder. Before the use, please remove the solder joint which is designed originally for antistatic disturbance.
A wide variety of factors affect solder joint reliability and any one. Notification of shipment will be sent to buyer from ebay email. If you are 100% certain you used the correct diagram, and your solder joints are perfect remove the chip and replace with new chip. Figure 3a plots crack length against the number of bending cycles n. In this chapter, solder joint cracks at snbi58 solder acf joints were investigated in conventional thermal compression bonding and ultrasonic bonding. Reliability study of low silver alloy solder pastes. Khs 400c laser lenspickup replacement part for playstation 2 ps2 console o du. A common nondestructive test method is to monitor resistance increase in a solder joint or a daisychain. We are seeing field returns after a year in the field due to solder joint cracking on the pins of a 16 pin throughhole connector. The other times it was opened it was to change laser unit and it was a khs 400c in it. The reason i dont want to separate it is that im concerned about putting strain on the other soldered joints nearby which arent leaking. But i notice that on some motherboards, or device that i try to remove, the solder that i add will not mix with solder that is used in production, so the solder i add melts but factory solder stay hard and i cant make it melt. The fatigue life of a solder joint depends on several factors including. In addition to high strength, a solder joint should possess adequate ductility in order to absorb sufficient amounts of mechanical energy before cracks and failures are induced.
Try a very fine xacto blade to clean the pcb pad, or a pencil eraser, or even super fine sand paper. The intention is to build the circuit card assembly and then hand place and solder the missing components when available. Sac solder joints, cracks parallel to the interface and perpendicular to these cracks. Vixen air 12 od heavy duty nylon hose up to 435psi 100 feet for suspension applications and trainair horn systems. Reliability analysis of snpb and snagcu solder joints in. Before the use, please remove the solder joint which is designed originally for antistatic disturbance scph30006r scph30002. Bottom line is the skill level of the torchbearer is the key to any sucessful solder joint. Overcoming the challenges of the qfn package, by karl seelig and kevin pigeon 4. It replaces both the khs 400b and khs 400c, but i havent seen one for sale in ages. Mechanical properties of pbfree snag solder joints.
Design and material parameter effects on bga solder joint reliability for automotive applications burton carpenter freescale semiconductor, inc. Practice is the only way to get there from here although i swear some of the cheap import valves have components with a melting point lower than solder. Could someone please help remove the static point on my. Leadfree and mixed assembly solder joint reliability trends. Fatigue crack propagation behavior of leadfree solder joints. A high speed 4point bend test has been used to evaluate the flexural strength of different component sizes and pincounts with eutectic snpb and leadfree snagcu solder. Tell me about silver solder the home shop machinist. A first individual solder joint encapsulant adhesive. However, crack formation of the solder joint crack was occurred at low temperature curable acrylic polymer resins after bonding processes. This shopping feature will continue to load items when the enter key is pressed. Ps2 khs400b laser lens for sony ps2 playsation 2 v1. Powerflat solder joint cross sections and crack area evolution.
It is therefore necessary to take care that no permanent load is present in the soldered joints that is, less than 1 nmm 2. Cracks in a real solder joint are difficult to identify using an xray system. The solder bond will be poor and the cracks may develop in the joint over time. Solder crack countermeasures in mlccs multilayer ceramic.