Post by thread:[EE]: DIP package trouble

I am new to electronics and I need some help. This may sound stupid (it *is* stupid!), but I have the hardest time getting DIP package ICs into DIP sockets. The pins are bent too far out and I can't figure out the best way to do it. Is there a tool that can bent the pins in before putting them into the socket? Any suggestions? Thanks! -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email spam_OUTlistservTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body

The easiest way to do this is to put the chip on it's side and gently bend all the pins on one side slightly at the same time. Then turn the chip over and do the other side. Just bend a little, not too much. I remember the days of PC's that used RAM chips. Once I installed 90 DIP's to bring the PC's memory up to a whopping 640K! John Hansen At 05:14 PM 7/19/02 -0500, you wrote: {Quote hidden}> I am new to electronics and I need some help. This may sound > stupid (it >*is* stupid!), but I have the hardest time getting DIP package ICs into DIP >sockets. The pins are bent too far out and I can't figure out the best way >to do it. Is there a tool that can bent the pins in before putting them into >the socket? Any suggestions? Thanks! > >-- >http://www.piclist.com#nomail Going offline? Don't AutoReply us! >email .....listservKILLspam@spam@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listservKILLspammitvma.mit.edu with SET PICList DIGEST in the body

At 05:14 PM 7/19/02 -0500, you wrote: > I am new to electronics and I need some help. This may sound > stupid (it >*is* stupid!), but I have the hardest time getting DIP package ICs into DIP >sockets. The pins are bent too far out and I can't figure out the best way >to do it. Is there a tool that can bent the pins in before putting them into >the socket? Any suggestions? Thanks! For a few pieces/hobbyist or small scale production, just use a smooth bench top or table top, lay them on side and gently and evenly press each side toward the center. Cheaper production sockets are more forgiving of misalignment than the more expensive screw machine sockets. It's a skill, after you do a dozen or so, it's easy. For production, there are machines.. but you don't need that. Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" .....speffKILLspam.....interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com 9/11 United we Stand -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email EraseMElistservspam_OUTTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body

Richard Mellina <PICLISTspam_OUTmitvma.mit.edu> wrote: > I have the hardest time getting DIP package ICs into DIP sockets. > The pins are bent too far out and I can't figure out the best way > to do it. Is there a tool that can bent the pins in before putting > them into the socket? Yes. Outside of a production environment, the most commonly-used "tool" for this job is a tabletop, against which you press the leads (one side at a time) to bend them into alignment. -Andy === Andrew Warren -- @spam@aiwKILLspamcypress.com === Principal Design Engineer === Cypress Semiconductor Corporation === === Opinions expressed above do not === necessarily represent those of === Cypress Semiconductor Corporation -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email KILLspamlistservKILLspammitvma.mit.edu with SET PICList DIGEST in the body

For Richard Mellina Find a nice piece of hardwood, oak, maple, poplar or what ever that is about .350 think. If you have a good power saw you can cut it close to this thickness. Carefully sand down the wood until it is .280 thick. Put your chip on the edge and press the pins hard against the wood. If you have it sanded properly it will fit a DIP socket perfectly. Took me about an hour to make one just right but it works perfectly, and it will last forever. Sid -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email RemoveMElistservTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body

I almost always do the bending on a tabletop as other list members have described so well. But, if you have problems bending the pins without breaking them, a good set of tools can save you a bunch of broken chips. I use the WK-7 set from these guys: http://www.okindustries.com/products/4.4.htm This set does the job for all DIP sizes but, it costs about $70.00 and it takes longer to use the tools than to bend the pins by hand. Paul > {Original Message removed}

www.jdr.com/interact/item.asp?itemno=INS-DIP INS-DIP IC Insertion Tool 14-16 PIN $6.99 Laying them on the side to bend the pins in is pretty easy with wide 28-40 pin parts. If you're dealing with skinny dip parts try the insertion tool above. After enough practice on the wide chips you'll be able to do the skinny chips by hand but until then an insertion that straightens the leads is a lot less painful. chuckc {Original Message removed}

Sometimes I find I can align one side of the chip with the socket, then carefully push sideways until the pins on the opposite side just come into alignment. Then I push down for a nice snug fit. Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams Andrew Warren wrote: > Yes. Outside of a production environment, the most commonly-used > "tool" for this job is a tabletop, against which you press the > leads (one side at a time) to bend them into alignment. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email spamBeGonelistservspamBeGonemitvma.mit.edu with SET PICList DIGEST in the body

I am surprised to see that I jump through exactly the same hoops that so many do when correcting 'the spread' seen on this DIPs! I have also resorted to applying WD-40 (a lightweight lubricant) to some ICs via a cotton swab for those situations where I know IC insertion is going to require *more* downward force than I feel comfortable applying to a board ... I recently did this to a rather largish LCD display that had really loooong pins - this piece of instrumentation (a JCI-111 Electro Static Fieldmeter) manufactured in '85 had a little problem and required removing this largish LCD display for service - and I bent one of the LCD's pins ... prior to re-insertion I applied WD-40 to the pins to reduce the forces seen by all parts involved. No ill effects seen through the use of WD-40 on any low-voltage electronics treated this way to date for many years now ... Jim {Original Message removed}

At 05:14 PM 7/19/02 -0500, Richard Mellina wrote: > I am new to electronics and I need some help. This may sound > stupid (it >*is* stupid!), but I have the hardest time getting DIP package ICs into DIP >sockets. The pins are bent too far out and I can't figure out the best way >to do it. Is there a tool that can bent the pins in before putting them into >the socket? Any suggestions? Thanks! Many others have suggested the time honored technique of just using a flat surface to bend the leads to the proper spacing. It works and I recommend it. If you are looking for inexpensive tools to do this for you, we use 2 different units. One is made be Fancourt, the other is made by Hakko. They are both *very* quick to use: the Fancourt unit is double sided and handles both 0.300" and 0.600" DIP packages, the Hakko unit is single size only but allows a DIP rail to be attached to the unit so that all you do is grab the chip as it leaves the tube and slide it through the pressure wheels. Total time: about 1 second. You can make your own unit easily: a block of wood or aluminum or anti-static plastic with a guide fastened down the center and a pair of 1" OD ball bearing races. The guide is just wide enough to slide the DIP package on, the ball bearing races are spaced the correct distance apart to push the DIP leads in. I'll take pictures Monday and post them on our web site: look at <http://www.trinity-electronics.com> and they will be somewhere under the tech notes heading. But not until Monday. dwayne -- Dwayne Reid <TakeThisOuTdwaynerEraseMEspam_OUTplanet.eon.net> Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 18 years of Engineering Innovation (1984 - 2002) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com hint: To leave the PICList RemoveMEpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu

On Fri, 19 Jul 2002, Richard Mellina wrote: > I am new to electronics and I need some help. This may sound stupid (it >*is* stupid!), but I have the hardest time getting DIP package ICs into DIP >sockets. The pins are bent too far out and I can't figure out the best way >to do it. Is there a tool that can bent the pins in before putting them into >the socket? Any suggestions? Thanks! There are pin formers out there but the manual way is to grab the chip by the plastic with four fingers (two from each hand), put all the pins on a side, flush down on a hard-topped flat table, pins away from you, and push down and forward on the body using your fingers. The pins will give and bend while staying all parallel. Repeat for the other side. Practice makes perfect but does not replace a proper pin bender jig. Peter -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestEraseME.....mitvma.mit.edu

Spehro Pefhany wrote: > > At 05:14 PM 7/19/02 -0500, you wrote: > > I am new to electronics and I need some help. This may sound > > stupid (it > >*is* stupid!), but I have the hardest time getting DIP package ICs into DIP > >sockets. The pins are bent too far out and I can't figure out the best way > >to do it. Is there a tool that can bend the pins? We use a plastic hand operated "squeezer" that fits both width chips, one in each side. From a local hobby electronics store, about $3 US. :o) -Roman -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestmitvma.mit.edu

> Sometimes I find I can align one side of the chip with the socket, then > carefully push sideways until the pins on the opposite side just come > into alignment. Then I push down for a nice snug fit. I don't suggest you do this. Way back when I first started in industry I was assigned to a project to determine why a particular product had so many field failures after being out in the field for 3 to 6 months. The product would fail in the field and was shipped back for repair, where they could not find any problems (no defect found). After looking at many units over many months, 30% of the failures were due to intermittent socket connects. During the production process, some chips were inserted by hand as opposed to using a pick and place machine. The hand inserts were put in by line workers that basically "levered" the chips in by pushing against one side of the socket, deforming the spring contacts beyond their elasticity point. Enough to still make contact, but not enough for a "gas tight" connection. Over time, the connection would oxidize and fail. A slight flexing (even shipping) would restore operation. The solution was to either not use sockets or "pre-bend" the legs - in our case with a proper tool. In short, use a tool, or bend against a workbench, never against the socket itself. Ken {Original Message removed}

Dave King wrote: > > >We use a plastic hand operated "squeezer" that fits > >both width chips, one in each side. From a local > >hobby electronics store, about $3 US. :o) > >-Roman > > Gee Roman I was sort of expecting something more > along the lines of "Real Techies use their TEETH" > from you ;-] Cheeky! :o) Real techies "dont need no stinkin' DIP sockets" (obscure movie reference). We solder the resistors etc straight to the PIC pins, and build rat's nest circuits. Ahh nostalgia... ;o) -Roman -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

On Mon, 22 Jul 2002 00:15:15 +1000, you wrote: >Dave King wrote: >> >> >We use a plastic hand operated "squeezer" that fits >> >both width chips, one in each side. From a local >> >hobby electronics store, about $3 US. :o) >> >-Roman >> >> Gee Roman I was sort of expecting something more >> along the lines of "Real Techies use their TEETH" >> from you ;-] > > >Cheeky! :o) Real techies "dont need no stinkin' DIP >sockets" (obscure movie reference). We solder the >resistors etc straight to the PIC pins, and build >rat's nest circuits. Ahh nostalgia... ;o) >-Roman Pins ? "Pins are for Wimps" (another movie reference) - if it ain't BGA, CSP or die, it ain't worth talkin 'bout! ;-) "Hey, dude - fire up the gas-fired wire-bonding iron & peel me off me some o that-thar 50 guage gold wire... " -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

On Mon, 22 Jul 2002, Roman Black wrote: >> Gee Roman I was sort of expecting something more >> along the lines of "Real Techies use their TEETH" >> from you ;-] > > >Cheeky! :o) Real techies "dont need no stinkin' DIP >sockets" (obscure movie reference). We solder the >resistors etc straight to the PIC pins, and build >rat's nest circuits. Ahh nostalgia... ;o) What nostalgia ?! Do you think I have time to wait for boards and stuff when I have an idea ? Or use the solderless breadboard with 20pF (measured) between each rail ? Sheesh. Of course some of the 'airwired' parts are SMD. Oh well, so what ? ;-) Peter -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> I am new to electronics and I need some help. This may sound stupid (it > *is* stupid!), but I have the hardest time getting DIP package ICs into DIP > sockets. The pins are bent too far out and I can't figure out the best way > to do it. Is there a tool that can bent the pins in before putting them into > the socket? Any suggestions? Thanks! I just press the line of pins against my desk, I guess you have compareable tools available. There are devices, pin straigteners or something, quite cheap but I never used one. Wouter van Ooijen -- Van Ooijen Technische Informatica: http://www.voti.nl Jal compiler, Wisp programmer, WLoader bootloader, PICs kopen -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads