Different Types of IC Mounting

**Chris1992** · 10-09-2005, 01:32 PM

Draft as of now. Will be improved.

SOIC
Stands for Small Outline Integrated Circuit. Looks like a DIP, but way smaller and surface mount. Used in tight spaces.

QFP
Stands for Quad Flat Pack. It's a large chip with legs on all four sides and SMT.

DIP
Stands for Dual Inline Package. This type of mounting has been around since the 1970s. Thru-hole.

**PeteS in CA** · 10-09-2005, 05:43 PM

Your SMT devices are both "J-lead", i.e. the leads bend outward. Gull-wing (IIRC) leads bend inward, under the device. SOIC packages are often identified by the number of pins, e.g. SO-8, SO-14, or SO-16. I've seen some power MOSFETs in SO-8 packages.

There also are BGA, "Ball Grid Array", parts, which have an array of little balls of solder on the bottom; you have similar little solder balls on the PBC, and the solder is reflowed for installation.

On the small side, you may find reference ICs in SOT-23 packages, and op-amps or comparators in SOT-23-5 (5-pin) packages.

**arneson** · 10-09-2005, 06:09 PM

Can I use my (Chrismas present) cold soldering tool on these? LOL

I actually got 3 of them as gifts.
They'r good for "regifting". LOL

**Chris1992** · 10-10-2005, 06:02 AM

Pete, I would appreciate pics and thanks for the help. I knew about BGA but did not have a pic.

10-09-2005, 05:43 PM	#2
PeteS in CA Badcaps Veteran Join Date: Aug 2005 City & State: San Jose, CA My Country: USA, Unsure of Planet Line Voltage: 120VAC, 60Hz & 115VAC, 400Hz I'm a: Professional Tech Posts: 3,504	Re: Different Types of IC Mounting Your SMT devices are both "J-lead", i.e. the leads bend outward. Gull-wing (IIRC) leads bend inward, under the device. SOIC packages are often identified by the number of pins, e.g. SO-8, SO-14, or SO-16. I've seen some power MOSFETs in SO-8 packages. There also are BGA, "Ball Grid Array", parts, which have an array of little balls of solder on the bottom; you have similar little solder balls on the PBC, and the solder is reflowed for installation. On the small side, you may find reference ICs in SOT-23 packages, and op-amps or comparators in SOT-23-5 (5-pin) packages. __________________ PeteS in CA Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells. ************************** To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it. ************************** Anti-Covid-Vaxxer pig crap claim/prediction, Doctor: Heart Failure from mRNA Jabs "Will Kill Most People" \| Principia Scientific Intl. ; Dr. Geert Vanden Bossche Warns COVID-19 Jab Injuries and Deaths Will Soon "Collapse Our Health System" (VIDEO) ; Fully Vaxxed May 2021; Since that time I've done 13 5Ks, 1 8K, 12 10Ks, and 4 half marathons

10-09-2005, 06:09 PM	#3
arneson Badcaps Veteran Join Date: Sep 2005 City & State: SWF Posts: 1,258	Re: Different Types of IC Mounting Can I use my (Chrismas present) cold soldering tool on these? LOL I actually got 3 of them as gifts. They'r good for "regifting". LOL __________________ Jim

10-10-2005, 06:02 AM	#4
Chris1992 Badcaps Veteran Join Date: Apr 2005 City & State: Michigan, USA Posts: 557	Re: Different Types of IC Mounting Pete, I would appreciate pics and thanks for the help. I knew about BGA but did not have a pic.

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