List of integrated circuit packaging types explained

Integrated circuits are put into protective packages to allow easy handling and assembly onto printed circuit boards and to protect the devices from damage. A very large number of package types exist. Some package types have standardized dimensions and tolerances, and are registered with trade industry associations such as JEDEC and Pro Electron. Other types are proprietary designations that may be made by only one or two manufacturers. Integrated circuit packaging is the last assembly process before testing and shipping devices to customers.

Occasionally specially-processed integrated circuit dies are prepared for direct connections to a substrate without an intermediate header or carrier. In flip chip systems the IC is connected by solder bumps to a substrate. In beam-lead technology, the metallized pads that would be used for wire bonding connections in a conventional chip are thickened and extended to allow external connections to the circuit. Assemblies using "bare" chips have additional packaging or filling with epoxy to protect the devices from moisture.

Through-hole packages

See main article: dual in-line package. Through-hole technology uses holes drilled through the printed circuit board (PCB) for mounting the components. The component has leads that are soldered to pads on the PCB to electrically and mechanically connect them to the PCB.

Acronym	Full name	Remark
SIP
DIP		0.1abbr=onNaNabbr=on pin spacing, rows 0.3abbr=onNaNabbr=on or 0.6abbr=onNaNabbr=on apart. Other row spacings are used much less frequently, like 0.4abbr=onNaNabbr=on and 0.9abbr=onNaNabbr=on.
CDIP	Ceramic DIP^[1]
CERDIP	Glass-sealed ceramic DIP
QIP		Like DIP but with staggered (zig-zag) pins.
SKDIP	Skinny DIP	Standard DIP with 0.1abbr=onNaNabbr=on pin spacing, rows 0.3abbr=onNaNabbr=on apart.
SDIP	Shrink DIP	Non-standard DIP with smaller 0.07abbr=onNaNabbr=on pin spacing.
ZIP
MDIP	Molded DIP^[2]
PDIP	Plastic DIP

Surface mount

See also: Surface-mount technology.

Acronym	Full name	Remark
CCGA	Ceramic column-grid array (CGA)
CGA	Column-grid array
CERPACK	Ceramic package^[3]
CQGP^[4]	Ceramic Quad Grid Array Package
LLP	Lead-less lead-frame package	A package with metric pin distribution (0.5–0.8 mm pitch)^[5]
	Land grid array
	Low-temperature co-fired ceramic^[6]
	Multi-chip module^[7]
MICRO SMDXT	Micro surface-mount device extended technology^[8]

Chip on board is a packaging technique that directly connects a die to a PCB, without an interposer or lead frame.

Chip carrier

See main article: chip carrier.

A chip carrier is a rectangular package with contacts on all four edges. Leaded chip carriers have metal leads wrapped around the edge of the package, in the shape of a letter J. Leadless chip carriers have metal pads on the edges. Chip carrier packages may be made of ceramic or plastic and are usually secured to a printed circuit board by soldering, though sockets can be used for testing.

Acronym	Full name	Remark
BCC	Bump chip carrier
CLCC	Ceramic lead-less chip carrier
LCC	Lead-less chip carrier	Contacts are recessed vertically.
LCC	Leaded chip carrier
LCCC	Leaded ceramic-chip carrier
DLCC	Dual lead-less chip carrier (ceramic)
	Plastic leaded chip carrier

Pin grid arrays

See main article: article and Pin grid array.

Acronym	Full name	Remark
OPGA	Organic pin-grid array
FCPGA	Flip-chip pin-grid array
PGA	Pin-grid array	Also known as PPGA
CPGA	Ceramic pin-grid array

Flat packages

See main article: article and Quad flat package.

Acronym	Full name	Remark
-		Earliest version metal/ceramic packaging with flat leads
CFP	Ceramic flat-pack
CQFP	Ceramic quad flat-pack	Similar to PQFP
BQFP	Bumpered quad flat-pack
DFN	Dual flat-pack	No lead
ETQFP	Exposed thin quad flat-package^[9]
PQFN	Power quad flat-pack	No-leads, with exposed die-pad[s] for heatsinking^[10]
	Plastic quad flat-package
LQFP	Low-profile quad flat-package
QFN		Also called as micro lead frame (MLF).^[11]
QFP
MQFP	Metric quad flat-pack	QFP with metric pin distribution
HVQFN	Heat-sink very-thin quad flat-pack, no-leads
SIDEBRAZE^[12] ^[13]
TQFP	Thin quad flat-pack
VQFP	Very-thin quad flat-pack
TQFN	Thin quad flat, no-lead
VQFN	Very-thin quad flat, no-lead
WQFN	Very-very-thin quad flat, no-lead
UQFN	Ultra-thin quad flat-pack, no-lead
ODFN	Optical dual flat, no-lead	IC packaged in transparent packaging used in optical sensor

Small outline packages

A small outline integrated circuit (SOIC) is a surface-mounted integrated circuit (IC) package which occupies an area about 30–50% less than an equivalent dual in-line package (DIP), with a typical thickness being 70% less. They are generally available in the same pin-outs as their counterpart DIP ICs.

Acronym	Full name	Remark
	Small-outline package
CSOP	Ceramic small-outline package
DSOP	Dual small-outline package
HSOP	Thermally-enhanced small-outline package
HSSOP	Thermally-enhanced shrink small-outline package^[14]
HTSSOP	Thermally-enhanced thin shrink small-outline package
	Mini small-outline integrated circuit
	Mini small-outline package	Maxim uses the trademarked name μMAX for MSOP packages
PSOP	Plastic small-outline package
PSON	Plastic small-outline no-lead package
QSOP	Quarter-size small-outline package	The terminal pitch is 0.635 mm.
	Small-outline integrated circuit	Also known as SOIC NARROW and SOIC WIDE
	Small-outline J-leaded package
SON	Small-outline no-lead package
	Shrink small-outline package
	Thin small-outline package
	Thin shrink small-outline package
TVSOP	Thin very-small-outline package
VSOP	Very-small-outline package
VSSOP	Very-thin shrink small-outline package	Also referred as MSOP = micro small-outline package
WSON	Very-very-thin small-outline no-lead package
USON	Very-very-thin small-outline no-lead package	Slightly smaller than WSON

Chip-scale packages

According to IPC's standard J-STD-012, Implementation of Flip Chip and Chip Scale Technology, in order to qualify as chip scale, the package must have an area no greater than 1.2 times that of the die and it must be a single-die, direct surface mountable package. Another criterion that is often applied to qualify these packages as CSPs is their ball pitch should be no more than 1 mm. Chip-scale package

Acronym	Full name	Remark
BL	Beam lead technology	Bare silicon chip, an early chip-scale package
	Chip-scale package	Package size is no more than 1.2× the size of the silicon chip^[15]
TCSP	True chip-size package	Package is same size as silicon^[16]
TDSP	True die-size package	Same as TCSP
WCSP or WL-CSP or WLCSP	Wafer-level chip-scale package	A WL-CSP or WLCSP package is just a bare die with a redistribution layer (or I/O pitch) to rearrange the pins or contacts on the die so that they can be big enough and have sufficient spacing so that they can be handled just like a BGA package.^[17]
PMCP	Power mount CSP (chip-scale package)	Variation of WLCSP, for power devices like MOSFETs. Made by Panasonic.^[18]
Fan-out WLCSP		Variation of WLCSP. Like a BGA package but with the interposer built directly atop the die and encapsulated alongside it.
eWLB	Embedded wafer level ball grid array	Variation of WLCSP.
MICRO SMD	-	Chip-size package (CSP) developed by National Semiconductor^[19]
COB		Bare die supplied without a package. It is mounted directly to the PCB using bonding wires and covered with a blob of black Epoxy.^[20] Also used for LEDs. In LEDs, transparent epoxy or a silicon caulk-like material that may contain a phosphor is poured into a mold containing the LED(s) and cured. The mold forms part of the package.
COF	Chip-on-flex	Variation of COB, where a chip is mounted directly to a flex circuit. Unlike COB, it may not use wires nor be covered with epoxy, using underfill instead.
TAB		Variation of COF, where a flip chip is mounted directly to a flex circuit without the use of bonding wires. Used by LCD driver ICs.
COG	Chip-on-glass	Variation of TAB, where a chip is mounted directly to a piece of glass - typically an LCD. Used by LCD and OLED driver ICs.

Ball grid array

See main article: article and Ball grid array.

Ball grid array (BGA) uses the underside of the package to place pads with balls of solder in grid pattern as connections to PCB.^[1]

Acronym	Full name	Remark
	Fine-pitch ball-grid array	A square or rectangular array of solder balls on one surface
LBGA	Low-profile ball-grid array	Also known as laminate ball-grid array
TEPBGA	Thermally-enhanced plastic ball-grid array
CBGA	Ceramic ball-grid array
OBGA	Organic ball-grid array
TFBGA	Thin fine-pitch ball-grid array
PBGA	Plastic ball-grid array
MAP-BGA	Mold array process - ball-grid array http://www.freescale.com/files/dsp/doc/eng_bulletin/EB362.pdf
UCSP	Micro (μ) chip-scale package	Similar to a BGA (A Maxim trademark example)^[21]
μBGA	Micro ball-grid array	Ball spacing less than 1 mm
LFBGA	Low-profile fine-pitch ball-grid array
TBGA	Thin ball-grid array
SBGA	Super ball-grid array	Above 500 balls
UFBGA	Ultra-fine ball-grid array^[22]

Transistor, diode, small-pin-count IC packages

• MELF: Metal electrode leadless face (usually for resistors and diodes)
• SOD: Small-outline diode.
• SOT: Small-outline transistor (also SOT-23, SOT-223, SOT-323).
• TO-XX: wide range of small pin count packages often used for discrete parts like transistors or diodes.
  • TO-3: Panel-mount with leads
  • TO-5: Metal can package with radial leads
  • TO-18: Metal can package with radial leads
  • TO-39
  • TO-46
  • TO-66: Similar shape to the TO-3 but smaller
  • TO-92: Plastic-encapsulated package with three leads
  • TO-99: Metal can package with eight radial leads
  • TO-100: Metal can package with ten radial leads, similar to TO-99
  • TO-126: Plastic-encapsulated package with three leads and a hole for mounting on a heat sink
  • TO-220: Through-hole plastic package with a (usually) metal heat sink tab and three leads
  • TO-226^[23]
  • TO-247:^[24] Plastic-encapsulated package with three leads and a hole for mounting on a heat sink
  • TO-251:^[24] Also called IPAK: SMT package similar to the DPAK but with longer leads for SMT or TH mounting
  • TO-252:^[24] (also called SOT428, DPAK):^[24] SMT package similar to the DPAK but smaller
  • TO-262:^[24] Also called I2PAK: SMT package similar to the D2PAK but with longer leads for SMT or TH mounting
  • TO-263:^[24] Also called D2PAK: SMT package similar to the TO-220 without the extended tab and mounting hole
  • TO-274:^[24] Also called Super-247: SMT package similar to the TO-247 without the mounting hole

Dimension reference

Surface-mount

C: Clearance between IC body and PCB

H: Total height

T: Lead thickness

L: Total carrier length

L_W: Lead width

L_L: Lead length

P: Pitch

Through-hole

C: Clearance between IC body and board

H: Total height

T: Lead thickness

L: Total carrier length

L_W: Lead width

L_L: Lead length

P: Pitch

W_B: IC body width

W_L: Lead-to-lead width

Package dimensions

All measurements below are given in mm. To convert mm to mils, divide mm by 0.0254 (i.e., 2.54 mm / 0.0254 = 100 mil).

C: Clearance between package body and PCB.

H: Height of package from pin tip to top of package.

T: Thickness of pin.

L: Length of package body only.

L_W: Pin width.

L_L: Pin length from package to pin tip.

P: Pin pitch (distance between conductors to the PCB).

W_B: Width of the package body only.

W_L: Length from pin tip to pin tip on the opposite side.

Dual row

Image	Family	Pin	Name	Package	L	WB	WL	H	C	P	LL	T	LW
	DIP	Dual inline package	8-DIP	9.2–9.8	6.2–6.48	7.62	7.7		2.54 (0.1in)	3.05–3.6		1.14–1.73
		32-DIP			15.24			2.54 (0.1in)
			Lead-frame chip-scale package							0.5
	MSOP	Mini small-outline package	8-MSOP	3	3	4.9	1.1	0.10	0.65	0.95	0.18	0.17–0.27
		10-MSOP	3	3	4.9	1.1	0.10	0.5	0.95	0.18	0.17–0.27
		16-MSOP	4.04	3	4.9	1.1	0.10	0.5	0.95	0.18	0.17–0.27
	SO SOIC SOP	Small-outline integrated circuit	8-SOIC	4.8–5.0	3.9	5.8–6.2	1.72	0.10–0.25	1.27	1.05	0.19–0.25	0.39–0.46
		14-SOIC	8.55–8.75	3.9	5.8–6.2	1.72	0.10–0.25	1.27	1.05	0.19–0.25	0.39–0.46
		16-SOIC	9.9–10	3.9	5.8–6.2	1.72	0.10–0.25	1.27	1.05	0.19–0.25	0.39–0.46
		16-SOIC	10.1–10.5	7.5	10.00–10.65	2.65	0.10–0.30	1.27	1.4	0.23–0.32	0.38–0.40
			Small-outline transistor	SOT-23-6	2.9	1.6	2.8	1.45		0.95	0.6		0.22–0.38
			Shrink small-outline package							0.65
			Thin dual flat no-lead	8-TDFN	3	3	3	0.7–0.8		0.65			0.19–0.3
			Thin small-outline package							0.5
			Thin shrink small-outline package	8-TSSOP^[25]	2.9-3.1	4.3-4.5	6.4	1.2	0.15	0.65		0.09–0.2	0.19–0.3
		Y		14-TSSOP^[26]	4.9-5.1	4.3-4.5	6.4	1.1	0.05-0.15	0.65		0.09-0.2	0.19-0.30
				20-TSSOP^[27]	6.4-6.6	4.3-4.5	6.4	1.1	.05-0.15	0.65		0.09-0.2	0.19-0.30
			Micro small-outline package^[28]	μSOP-8	3		4.9	1.1		0.65
	US8^[29]		US8 package		2	2.3	3.1	.7		0.5

Quad rows

Image	Family	Pin	Name	Package	WB	WL	H	C	L	P	LL	T	LW
			Plastic leaded chip-carrier							1.27
			Ceramic leadless chip-carrier	48-CLCC	14.22	14.22	2.21		14.22	1.016			0.508
			Low-profile quad flat package							0.50
			Thin quad flat-package	TQFP-44	10.00	12.00		0.35–0.50		0.80	1.00	0.09–0.20	0.30–0.45
			Thin quad flat no-lead

LGA

Package	x	y	z
52-ULGA	12mm	17mm	0.65mm
52-ULGA	14mm	18mm	0.10mm
52-VELGA	?	?	?

Multi-chip packages

A variety of techniques for interconnecting several chips within a single package have been proposed and researched:

• SiP (system in package)
• PoP (package on package)
• 3D-SICs, Monolithic 3D ICs, and other three-dimensional integrated circuits
• Multi-chip module
• WSI (wafer-scale integration)
• Proximity communication

By terminal count

See main article: Chip carrier.

Surface-mount components are usually smaller than their counterparts with leads, and are designed to be handled by machines rather than by humans. The electronics industry has standardized package shapes and sizes (the leading standardisation body is JEDEC).

The codes given in the chart below usually tell the length and width of the components in tenths of millimeters or hundredths of inches. For example, a metric 2520 component is 2.5 mm by 2.0 mm which corresponds roughly to 0.10 inches by 0.08 inches (hence, imperial size is 1008). Exceptions occur for imperial in the two smallest rectangular passive sizes. The metric codes still represent the dimensions in mm, even though the imperial size codes are no longer aligned. Problematically, some manufacturers are developing metric 0201 components with dimensions of 0.25x,^[30] but the imperial 01005 name is already being used for the 0.4× package. These increasingly small sizes, especially 0201 and 01005, can sometimes be a challenge from a manufacturability or reliability perspective.^[31]

Two-terminal packages

Rectangular passive components

Mostly resistors and capacitors.

Package		Approximate dimensions, length × width	Typical resistor power rating (W)
Metric	Imperial
0201	008004	0.25 mm × 0.125 mm	0.010 in × 0.005 in
03015	009005	0.3 mm × 0.15 mm	0.012 in × 0.006 in	0.02^[32]
0402	01005	0.4 mm × 0.2 mm	0.016 in × 0.008 in	0.031^[33]
0603	0201	0.6 mm × 0.3 mm	0.02 in × 0.01 in	0.05
1005	0402	1.0 mm × 0.5 mm	0.04 in × 0.02 in	0.062^[34] –0.1
1608	0603	1.6 mm × 0.8 mm	0.06 in × 0.03 in	0.1
2012	0805	2.0 mm × 1.25 mm	0.08 in × 0.05 in	0.125
2520	1008	2.5 mm × 2.0 mm	0.10 in × 0.08 in
3216	1206	3.2 mm × 1.6 mm	0.125 in × 0.06 in	0.25
3225	1210	3.2 mm × 2.5 mm	0.125 in × 0.10 in	0.5
4516	1806	4.5 mm × 1.6 mm	0.18 in × 0.06 in^[35]
4532	1812	4.5 mm × 3.2 mm	0.18 in × 0.125 in	0.75
4564	1825	4.5 mm × 6.4 mm	0.18 in × 0.25 in	0.75
5025	2010	5.0 mm × 2.5 mm	0.20 in × 0.10 in	0.75
6332	2512	6.3 mm × 3.2 mm	0.25 in × 0.125 in	1
6863	2725	6.9 mm × 6.3 mm	0.27 in × 0.25 in	3
7451	2920	7.4 mm × 5.1 mm	0.29 in × 0.20 in^[36]

Tantalum capacitors

See main article: Tantalum capacitor.

Package	Dimensions (Length, typ. × width, typ. × height, max.)
EIA 2012-12 (KEMET R, AVX R)	2.0 mm × 1.3 mm × 1.2 mm
EIA 3216-10 (KEMET I, AVX K)	3.2 mm × 1.6 mm × 1.0 mm
EIA 3216-12 (KEMET S, AVX S)	3.2 mm × 1.6 mm × 1.2 mm
EIA 3216-18 (KEMET A, AVX A)	3.2 mm × 1.6 mm × 1.8 mm
EIA 3528-12 (KEMET T, AVX T)	3.5 mm × 2.8 mm × 1.2 mm
EIA 3528-21 (KEMET B, AVX B)	3.5 mm × 2.8 mm × 2.1 mm
EIA 6032-15 (KEMET U, AVX W)	6.0 mm × 3.2 mm × 1.5 mm
EIA 6032-28 (KEMET C, AVX C)	6.0 mm × 3.2 mm × 2.8 mm
EIA 7260-38 (KEMET E, AVX V)	7.2 mm × 6.0 mm × 3.8 mm
EIA 7343-20 (KEMET V, AVX Y)	7.3 mm × 4.3 mm × 2.0 mm
EIA 7343-31 (KEMET D, AVX D)	7.3 mm × 4.3 mm × 3.1 mm
EIA 7343-43 (KEMET X, AVX E)	7.3 mm × 4.3 mm × 4.3 mm

^{[37] [38]}

Aluminum capacitors

See main article: Electrolytic capacitor.

Package	Dimensions (Length, typ. × width, typ. × height, max.)
Cornell-Dubilier A	3.3 mm × 3.3 mm × 5.5 mm
Chemi-Con D	4.3 mm × 4.3 mm × 5.7 mm
Panasonic B	4.3 mm × 4.3 mm × 6.1 mm
Chemi-Con E	5.3 mm × 5.3 mm × 5.7 mm
Panasonic C	5.3 mm × 5.3 mm × 6.1 mm
Chemi-Con F	6.6 mm × 6.6 mm × 5.7 mm
Panasonic D	6.6 mm × 6.6 mm × 6.1 mm
Panasonic E/F, Chemi-Con H	8.3 mm × 8.3 mm × 6.5 mm
Panasonic G, Chemi-Con J	10.3 mm × 10.3 mm × 10.5 mm
Chemi-Con K	13 mm × 13 mm × 14 mm
Panasonic H	13.5 mm × 13.5 mm × 14 mm
Panasonic J, Chemi-Con L	17 mm × 17 mm × 17 mm
Panasonic K, Chemi-Con M	19 mm × 19 mm × 17 mm

^{[39] [40] [41]}

Small-outline diode (SOD)

Package	Dimensions (Length, typ. × width, typ. × height, max.)
SOD-80C	3.5 mm × ⌀ 1.5 mm^[42]
SOD-123	2.65 mm × 1.6 mm × 1.35 mm^[43]
SOD-128	3.8 mm × 2.5 mm × 1.1 mm^[44]
SOD-323 (SC-76)	1.7 mm × 1.25 mm × 1.1 mm^[45]
SOD-523 (SC-79)	1.2 mm × 0.8 mm × 0.65 mm^[46]
SOD-723	1.0 mm × 0.6 mm × 0.65 mm^[47]
SOD-923	0.8 mm × 0.6 mm × 0.4 mm^[48]

Metal electrode leadless face (MELF)

See main article: Metal electrode leadless face. Mostly resistors and diodes; barrel shaped components, dimensions do not match those of rectangular references for identical codes.^[49]

Package	Dimensions	Typical resistor rating
		Power (W)	Voltage (V)
MicroMELF (MMU), 0102	2.2 mm × ⌀ 1.1 mm	0.2–0.3	150
MiniMELF (MMA), 0204	3.6 mm × ⌀ 1.4 mm	0.25–0.4	200
MELF (MMB), 0207	5.8 mm × ⌀ 2.2 mm	0.4–1.0	300

DO-214

See main article: DO-214. Commonly used for rectifier, Schottky, and other diodes.

Package	Dimensions (leads) (Length, typ. × width, typ. × height, max.)
DO-214AA (SMB)	5.4 mm × 3.6 mm × 2.65 mm^[50]
DO-214AB (SMC)	7.95 mm × 5.9 mm × 2.25 mm
DO-214AC (SMA)	5.2 mm × 2.6 mm × 2.15 mm

Three- and four-terminal packages

Small-outline transistor (SOT)

See main article: Small-outline transistor.

Package	Aliases	Dimensions (excl. leads) (Length, typ. × width, typ. × height, max.)	Number of terminals	Remark
SOT-23-3	TO-236-3, SC-59	2.92 mm × 1.3 mm × 1.12 mm^[51]	3
SOT-89	TO-243,^[52] SC-62^[53]	4.5 mm × 2.5 mm × 1.5 mm^[54]	4	Center pin is connected to a large heat-transfer pad
SOT-143	TO-253	2.9 mm × 1.3 mm × 1.22 mm^[55]	4	Tapered body, one larger pad denotes terminal 1
SOT-223	TO-261	6.5 mm × 3.5 mm × 1.8 mm^[56]	4	One terminal is a large heat-transfer pad
SOT-323	SC-70	2 mm × 1.25 mm × 1.1 mm^[57]	3
SOT-416	SC-75	1.6 mm × 0.8 mm × 0.9 mm^[58]	3
SOT-663		1.6 mm × 1.2 mm × 0.6 mm^[59]	3
SOT-723		1.2 mm × 0.8 mm × 0.55^[60]	3	Has flat leads
SOT-883	SC-101	1 mm × 0.6 mm × 0.5 mm^[61]	3	Is lead-less

Other

• DPAK (TO-252, SOT-428): Discrete Packaging. Developed by Motorola to house higher powered devices. Comes in three^[62] or five-terminal^[63] versions.
• D2PAK (TO-263, SOT-404): Bigger than the DPAK; basically a surface mount equivalent of the TO220 through-hole package. Comes in 3, 5, 6, 7, 8 or 9-terminal versions.^[64]
• D3PAK (TO-268): Even larger than D2PAK.^{[65] [66]}

Five- and six-terminal packages

Small-outline transistor (SOT)

Package	Aliases	Dimensions (excl. leads) (Length, typ. × width, typ. × height, max.)	Number of terminals	Leaded or leadless
SOT-23-6	SOT-26, SC-74	2.9 mm × 1.3 mm × 1.3 mm^[67]	6	Leaded
SOT-353	SC-88A	2 mm × 1.25 mm × 0.95 mm^[68]	5	Leaded
SOT-363	SC-88, SC-70-6	2 mm × 1.25 mm × 0.95 mm^[69]	6	Leaded
SOT-563		1.6 mm × 1.2 mm × 0.6 mm^[70]	6	Leaded
SOT-665		1.6 mm × 1.6 mm × 0.55 mm^[71]	5	Leaded
SOT-666		1.6 mm × 1.2 mm × 0.6 mm^[72]	6	Leaded
SOT-886		1.45 mm × 1 mm × 0.5 mm^[73]	6	Leadless
SOT-891		1 mm × 1 mm × 0.5 mm^[74]	6	Leadless
SOT-953		1 mm × 0.8 mm × 0.5 mm^[75]	5	Leaded
SOT-963		1 mm × 1 mm × 0.5 mm^[76]	6	Leaded
SOT-1115		1 mm × 0.9 mm × 0.35 mm^[77]	6	Leadless
SOT-1202		1 mm × 1 mm × 0.35 mm^[78]	6	Leadless

Packages with more than six terminals

Dual-in-line

See main article: Dual in-line package.

• Flatpack was one of the earliest surface-mounted packages.
• Small-outline integrated circuit (SOIC): dual-in-line, 8 or more pins, gull-wing lead form, pin spacing 1.27 mm.
• Small-outline package, J-leaded (SOJ): The same as SOIC except J-leaded.^[79]
• Thin small-outline package (TSOP): thinner than SOIC with smaller pin spacing of 0.5 mm.
• Shrink small-outline package (SSOP): pin spacing of 0.65 mm, sometimes 0.635 mm or in some cases 0.8 mm.
• Thin shrink small-outline package (TSSOP).
• Quarter-size small-outline package (QSOP): with pin spacing of 0.635 mm.
• Very small outline package (VSOP): even smaller than QSOP; 0.4-, 0.5-, or 0.65-mm pin spacing.
• Dual flat no-lead (DFN): smaller footprint than leaded equivalent.

Quad-in-line

See main article: Quad in-line package.

• Plastic leaded chip carrier (PLCC): square, J-lead, pin spacing 1.27 mm
• Quad flat package (QFP): various sizes, with pins on all four sides
• Low-profile quad flat-package (LQFP): 1.4 mm high, varying sized and pins on all four sides
• Plastic quad flat-pack (PQFP), a square with pins on all four sides, 44 or more pins
• Ceramic quad flat-pack (CQFP): similar to PQFP
• Metric quad flat-pack (MQFP): a QFP package with metric pin distribution
• Thin quad flat-pack (TQFP), a thinner version of LQFP
• Quad flat no-lead (QFN): smaller footprint than leaded equivalent
• Leadless chip carrier (LCC): contacts are recessed vertically to "wick-in" solder. Common in aviation electronics because of robustness to mechanical vibration.
• Micro leadframe package (MLP, MLF): with a 0.5 mm contact pitch, no leads (same as QFN)
• Power quad flat no-lead (PQFN): with exposed die-pads for heatsinking

Grid arrays

• Ball grid array (BGA): A square or rectangular array of solder balls on one surface, ball spacing typically 1.27mm
  • Fine-pitch ball grid array (FBGA): A square or rectangular array of solder balls on one surface
  • Low-profile fine-pitch ball grid array (LFBGA): A square or rectangular array of solder balls on one surface, ball spacing typically 0.8 mm
  • Micro ball grid array (μBGA): Ball spacing less than 1 mm
  • Thin fine-pitch ball grid array (TFBGA): A square or rectangular array of solder balls on one surface, ball spacing typically 0.5 mm
• Land grid array (LGA): An array of bare lands only. Similar to in appearance to QFN, but mating is by spring pins within a socket rather than solder.
• Column grid array (CGA): A circuit package in which the input and output points are high-temperature solder cylinders or columns arranged in a grid pattern.
  • Ceramic column grid array (CCGA): A circuit package in which the input and output points are high-temperature solder cylinders or columns arranged in a grid pattern. The body of the component is ceramic.
• Lead-less package (LLP): A package with metric pin distribution (0.5 mm pitch).

Non-packaged devices

Although surface-mount, these devices require specific process for assembly.

• Chip-on-board (COB), a bare silicon chip, that is usually an integrated circuit, is supplied without a package (which is usually a lead frame overmolded with epoxy) and is attached, often with epoxy, directly to a circuit board. The chip is then wire bonded and protected from mechanical damage and contamination by an epoxy "glob-top".
• Chip-on-flex (COF), a variation of COB, where a chip is mounted directly to a flex circuit. Tape-automated bonding process is also a chip-on-flex process as well.
• Chip-on-glass (COG), a variation of COB, where a chip, typically a liquid crystal display (LCD) controller, is mounted directly on glass.
• Chip-on-wire (COW), a variation of COB, where a chip, typically a LED or RFID chip, is mounted directly on wire, thus making it a very thin and flexible wire. Such wire may then be covered with cotton, glass or other materials to make into smart textiles or electronic textiles.

There are often subtle variations in package details from manufacturer to manufacturer, and even though standard designations are used, designers need to confirm dimensions when laying out printed circuit boards.

See also

• Surface-mount technology
• Three-dimensional integrated circuit
• Interposer
• IPC (electronics)
• List of chip carriers
• List of electronics package dimensions
• Redistribution layer
• Small-outline transistor
• Wafer-level packaging

External links

• JEDEC JEP95 official list of all (over 500) standard electronic packages
• Fairchild Index of Package Information
• An illustrated listing of different package types, with links to typical dimensions/features of each
• Intersil packaging information
• ICpackage.org
• Solder Pad Layout Dimensions
• International Microelectronics And Packaging Society

Notes and References

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