UPDATE.JAN–SC
Product Update:
Sockets and adapters
Today's IC and test and burn-in sockets and adapters come in many shapes and
sizes to help designers solve many prototyping, test, and burn-in problems.
Here's a look at some of the latest products
Emulator adapters for Intel microprocessor Emulator adapters are now
available for the Intel i960 family of embedded microprocessors. They
convert an i960 PGA or PLCC emulator pod into the QFP footprint of an i950
embedded microprocessor, simplifying prototyping. The adapters come in
surface-mountable, socketable, or clip-on versions. They are available for
80-, 132-, and 196-pin QFPs. (Clip-on, surface-mount, and socketable
versions: 80-pin QFP, $480; 132-pin QFP, $680; 196-pin QFP, $750–10 days
ARO.) Emulation Technology, Inc. Santa Clara, CA Tricia Bannister
408-982-0660 Fax 408-982-0664
PGA socket press-fits into pc boards
The Preci-DIP PGA socket has compliant tail pins that enable the socket to
press-fit into plated-through-holes. The compliant pin design uses a hollow
slotted tail that conforms to the plated-through-hole, preventing damage. A
series of serrations forms a gas-tight connection with the tin plating of
the plated-through-hole. Compliant tail lengths come in two sizes for 0.060
to 0.100-in. or 0.090 to 0.130-in.-thick panels. The socket is available
with molded polyester insulators having grids up to 21 x 21. An ultra
low-force contact minimizes component insertion and extraction forces. (Part
#546-93-169-17-101012, 169-pin PGA socket, $9.17 ea/large qty–2 weeks ARO.)
Mill-Max Manufacturing Corp. Oyster Bay, NY Stephen Kuncio 516-922-6000,
ext. 212 Fax 516-922-9253
SIMM socket has rugged design
The Advanced Latch SIMM socket has a formed spring contact and rugged
snap-in plastic latch for durability and wider board tolerances. The contact
ensures a gas-tight, low-resistance connection. A wide module-entry area
provides zero insertion force. The snap-in plastic latch has a smooth ramp
for easy module insertion. The socket is available in a standard 30-position
vertical configuration and accommodates JEDEC MO-O64 modules. The socket
body and latch are liquid-crystal polymer. ($1.35 ea/1,000–3 to 4 weeks
ARO.) Wearnes Hollingsworth Corp. Irvine, CA Jim Donaldson 714-855-6404 Fax
714-855-8264
PGA socket accepts ASICs
An interstitial PGA socket, the series 585, accepts ASICs on 0.050 x
0.100-in. centers. Its contacts have an insertion force of just 1 oz,
compared to 2 1/2 oz or more for other sockets. The contact opening is 0.005
in., and the contact length is 0.065 in. The socket is available in 243,
293, 365, 369, 391, 447, and 545 contacts. (Typical cost, $0.09 per
pin/small qty–stock to 4 weeks.) Andon Electronics Corp. Lincoln, RI Peter
Gallotello 401-333-0388 Fax 401-333-0287
Socket has pc board that increases packaging flexibility
The Correct-A-Chip socket is a two-piece socket with a pc board in the
middle. This design enables the socket to perform several functions, in a
single product, that normally require several different sockets. For
instance, the pc board can contain vias that reroute the pinouts to another
pattern. This configuration is useful where the chip and board patterns may
have the same number of pins, but different pin patterns. The socket permits
conversion between different package styles such as PLCC to PGA, SOIC to
DIP, and surface-mount to through-hole. Normally, separate adapter sockets
are required for each task. Moreover, circuit components can be placed on
the board between the mating socket halves. This allows the addition of
various ICs and discrete components to meet user needs. Aries customizes the
socket to the user's requirements with any combination of circuits, traces,
and functions. (Typical socket, $15 ea/500–4 to 6 weeks ARO.) Aries
Electronics, Inc. Frenchtown, NJ Frank Folmsbee 908-996-6841 Fax
908-996-3891
PGA sockets come in many versions
Pin-grid-array sockets come in matrix sizes from 10 x 10 through 25 x 25
with standard 0.100-in. spacing, as well as in carrier-compatible grid zip
sockets for 2- and 2 3/4-in.2 carriers. Also available are staggered
(interstitial) versions with a 19 x 19 outer matrix and 18 x 18 inner
matrix. The sockets are constructed of polyethersulfone rated to
150
beryllium copper or nickel with gold or nickel boron plating. (Typical price
for 150-lead, 150 degreesC-rated, gold-plated socket, $29.57 ea/1,000;
interstitial version, $64 ea/1,000–available now.) 3M Co., Electronic
Products Div. Austin, TX Product Information 800-225-5373
ZIF PGA socket holds Intel processor
A zero-insertion-force pin-grid-array socket accommodates the Intel
OverDrive processor for 486-DX2-based CPU systems. The socket is between 15%
and 20% smaller than conventional handle-actuated PGA sockets. It is
actuated by a bail actuator that has a locking detent for security and
easily clears the processor and its heat sink during opening and closing.
The socket comes in 238 positions with a 19 x 19 grid and a 169 positions
with a 17 x 17 grid. ($0.03 per line–4 to 6 weeks ARO.) AMP Inc.,
Harrisburg, PA Product information 800-522-6752
Adapter for DIP programmers
The PA-MACH84 is the latest addition to the company's line of AMD MACH
adapters. This adapter plugs into the 28-pin ZIF socket of the MACH84
programmer for programming the MACH 130 and 230 devices. The adapter allows
live-bug insertion of the MACH device with gentle pressure. The open-top
design of the adapter's socket portion visually confirms proper seating of
the device. (PA-MACH84, $199–stock to 2 weeks.) Logical Systems Corp.
Syracuse, NY Mitchell Burko 315-478-0722 Fax 315-475-8460
Emulation adapter for 68340 processors
The PC-PGA/QFP-68340-L-01 adapter connects 68340 processors packaged in
145-pin PGAs to 144-pin QFP land patterns. It consists of a PGA socket and a
QFP surface-mountable foot. This QFP foot is soldered to the target QFP land
pattern on the pc board. The PGA socket is then inserted onto the QFP foot.
The adapter is constructed with gold-plated machined pins. ($350–available
now.) Ironwood Electronics, Inc. St. Paul, MN Paul Jasmin 612-431-7025 Fax
612-432-8616
2-mm socket has reliable contact design
A vertical 2-mm socket has a twin-leaf, box contact with an early point of
contact for added reliability and a tapered entry point for easy mating with
2-mm headers. Contact material is phosphor bronze with a tin or gold-plated
finish. Body material is glass-filled thermoplastic, UL 94V-0 rated. The
socket stands just 4.5 mm high and can be stacked end to end or side to
side. It is available in 2 through 25 positions with single or double rows.
(Typical price, dual-row, five-position, tin-plated socket, $0.47
ea/1,000–6 weeks ARO.) E-Mark, Inc., Trumbull, CT Janice White
800-831-5383; in CT, 203-452-1003 Fax 203-261-7423
Socket holds thin quad flatpacks
Designed to hold 1- and 1.4-mm-thick thin plastic quad flatpacks, the QP1
series small-outline socket comes in sizes for 80-, 100-, 144-, and 176-pin
packages. It has a lid that distributes mating force uniformly along all
four sides of the package. A floating base seals the package body while
maintaining lead alignment. The socket body is glass-filled
polyethersulfone; contacts are beryllium copper with gold-over-nickel
plating. The operating temperature is -55 degrees to +170 degreesC; contact
resistance is 30 milliohms. (100-pin socket, from $49.03 ea/100, depending
on package design–stock to 4 weeks.) Nepenthe, Palo Alto, CA Diana Morgan
800-NEPENTHE; in CA, 415-496-6666 Fax 415-856-8650
LGA socket houses Intel 486 processor
A land-grid-array socket interfaces Intel's 486SL microprocessor, which
comes in an LGA package, to the pc board. Based on the company's CinApse
technology, the socket can be assembled to the pc board using either
conventional mounting hardware or with plastic studs integral to the socket
body. A compression spring, also integral to the socket, readily snaps open
or closed, thus permitting easy assembly or removal of the microprocessor.
An optional thermal pad aids heat dissipation. The socket stands just 0.200
in. high and comes in both the standard Intel footprint and a smaller
footprint. (From $12 to $20, depending on volume and options–4 to 6 weeks
ARO.) Cinch Connectors Elk Grove Village, IL Anthony Kalaijakis
708-981-6000, ext. 6179
PLCC socket is good to 230 degreesC
A surface-mount PLCC socket withstands reflow soldering at temperatures up
to 230 degreesC for 15 s. The socket is made of nylon and has an open-frame
design for easy solder-joint inspection and repair. Contacts are tin-plated
phosphor bronze. The socket is available in 20, 28, 32, 44, 52, 68, and 84
positions. ($0.80 ea/1,000–4 to 6 weeks ARO.) KYCON Cable & Connector, Inc.
San Jose, CA Wendy Wuerth 800-544-6941; in CA, 408-295-1110 Fax
408-295-8054
Test sockets provide wiping contact
A series of 0.50- and 0.65-mm molded carrier ring test sockets, designated
the Series 550 and 560 MCR, respectively, have normally closed contacts that
allow for maximum wiping action at the point of contact. A pressure plate in
the socket lid prevents package damage, while support rings in both the
socket base and lid eliminate the possibility of test pads being damaged.
The sockets have an operating temperature range of -55 degrees to +150
degreesC. (Series 560 MCR, 46-mm, 256-lead socket, $105.40 ea/250; 26-mm,
128-lead socket, $56.36 ea/250–3 to 4 weeks ARO.) CTI, Scottsdale, AZ Jeff
Farnsworth 602-998-1484 Fax 602-483-2731
Burn-in socket holds tape packs
The Series 667 burn-in socket has a top-actuated design with registration
pins for easy loading and unloading of molded carrier ring JEDEC tape packs.
It is available in ring sizes to hold 26 x 26-, 36 x 36-, 46 x 46-, and 56 x
56-mm packages for burn-in applications up to 150 degreesC. The socket is
made of UL 94V-0-rated material and has beryllium copper, gold-over-nickel
plated contacts. (46-mm, 100-lead socket, from $50 to $70–available now.)
Wells Electronics, Inc. South Bend, IN Jim Miner 219-287-5941 Fax
219-287-0356
PGA socket for Intel P5 chip
To accommodate the Intel P5 microprocessor, a PGA socket comes in two
versions. The PGA-273H-009B5-2120 has molded plastic walls to ensure proper
polarity and prevent incorrect insertion. The PGA-273H-009B5-2119 is molded
without walls to maximize the open space in the center of the socket and
ease access to the pc board. Both versions have a six-finger screw machine
receptacle with a low-insertion-force contact. The socket insulator is UL
94V-0 rated thermoplastic. ($6.85 ea/1,000–available now.) McKenzie
Technology Fremont, CA Debra Woods 510-651-2700 Fax 510-651-1020
2100
DIP converter for PLD
A programming converter for Lattice Semiconductor's 1048 programmable
converts the device's 120-pin QFP footprint to a 28- or 40-pin DIP footprint
for programming. The converter comes with a decoupling capacitor and
measures just 2.2 in.2 . The converter is constructed with two stacked
pc boards connected by headers. It comes in two versions, designated the
Part #120QF/28D6-ZL-L1048/LD for a right-side programming lever, and Part
#120QF/28D6-ZL-L1048/LU for a left-side lever. (Both versions, $275
each–stock to 5 days.) EDI Corp., Patterson, CA Milos Krejcik 209-892-3270
Fax 209-892-3610
Surface-mount receptacle has low profile
A three-piece, surface-mount receptacle allows access to the contact from
both the top and bottom. It is available in 0.050- or 0.079-in. centers with
up to 24 positions. Above-board height ranges from 0.039 to 0.095 in.,
depending on housing requirements. The receptacle's outer shell acts as a
protective sleeve for the contacts. This design produces the connector's
flat, low profile. It also eliminates any stress on the molded insulator.
Specifications include a maximum insertion force of 2.5-oz, 50-g normal
contact force, 5-milliohm initial contact resistance, a 0.1-A current
rating, and 0.018-in. mating pin size. (About $0.05 per position/large
qty–4 to 6 weeks ARO.) Mark Eyelet, Inc., Wolcott, CT Bob Shupp
203-756-8847 Fax 203-755-9410
Prototyping adapter accommodates 68-pin packages
The ANC-8000 prototyping adapter, for 68-pin square PLD packages, is
available with three-level wire-wrap or gold pins. It has test points for
test equipment and probes, with positive pin identification to ensure
correct data readings. The adapter is available with 68 pins on 0.1-in.
centers and 0.3-in. spaced rows, with 144 or 160 pins on 0.1-in. centers and
0.1-in. spaced rows. (68-pin version, $135–stock.) Antona Corp., Los
Angeles, CA Bob Mikkelson 310-473-8995 Fax 310-473-7112
PGA socket has built-in capacitors
Capacitors built into the body of the series PGD socket improve electrical
performance while maximizing pc-board layout performance. The socket is
compatible with various hybrid devices, including Intel's 80486. It is
available with a choice of lead styles and plating options. ($21.43
ea/100–4 to 6 weeks.) Robinson Nugent, Inc. New Albany, IN Louis Williams
800-338-8152; in IN, 812-945-0211 Fax 812-945-0804
Adapters convert QFP footprint to PGA
The SPEC series adapter converts a quad-flatpack footprint to a
pin-grid-array footprint. Also available is the GEN series adapter for new
designs where there is flexibility to route the wiring on the board to match
the adapter pinout. The adapters come in versions for both 0.025-in. JEDEC
and 0.020 to 0.040-in. EIA-J quad flatpacks. (Prices start at $10, depending
on quantity and type of adapter–5 days ARO.) Samtec, Inc., New Albany, IN
Pam Grieb 800-SAMTEC9 Fax 812-948-5047
PLCC sockets have low profile
Surface-mountable sockets for PLCCs stand just 0.177 in. high and have leads
on 0.050-in. centers. The CA-SPCL sockets are available with 20, 28, 32, 44,
52, 68, and 84 positions. The sockets have insulators of glass-filled
polyphenylene sulfide and contacts of phosphor bronze. Dielectric
withstanding voltage is 100 Vrms, and typical contact resistance 10
milliohms. The operating temperature range is -55 degrees to +125 degreesC.
($0.034 per contact position/1,000–available now.) Circuit Assembly Corp.
Irvine, CA Robert Brinckman 714-855-7887 Fax 714-855-4298
PGA sockets hold Intel chips
Low-insertion-force pin-grid array sockets are now available a 238-pin
version for the Intel P24T device and a 273-pin version for the Intel P5
device. Both sockets have disposable carriers and high-temperature molded
insulators to withstand all soldering processes. Insertion force is under 1
oz. Contacts are gold or tin plated. ($4.50 ea/prod qty–2 weeks.) Socket
Express New Brunswick, NJ Ed Farley 908-247-9500 Fax 908-247-9816
2100
Advertisement
