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Publication Date: 10/1/2010
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Ironwood: Test & Burn-In Socket
Test and burn-in socket.
Burnsville, MN — Ironwood Electronics has introduced a new QFN Socket, the SBT-QFN-4008, addressing high performance requirements for 0.4mm pitch devices. The contactor is a stamped spring pin with 34 gram actuation force per pin and cycle life of 100,000 insertions.

The self inductance of the contactor is 1nH, insertion loss of <1dB at 7GHz and capacitance 0.4pF. The current capacity of each contactor is 2.5 amps. Socket temperature range is -55 to +155°C. The socket also has an IC guide for precise QFN edge alignment.

The specific configuration of the package to be tested in the SBT-QFN-4008 is QFN, 5 x 5mm body size and 0.4mm pitch. To use, drop IC into the socket, place floating compression plate, swivel the lid, and apply down force using compression screw. This socket can be used for hand test and quick-turn custom burn-in applications — meeting the most stringent requirements.

These socket product lines have been designed to the JEDEC STD. MO-220 and are available for all standard configurations. Custom designs are also available. SBT-QFN-4008 socket incorporates an unusual contact design with outside spring and flat etched plungers that provide a robust solution for burn-in and test applications — providing excellent electrical signal integrity to meet the requirements of today's demanding analog, digital, RF, Bluetooth and telecom applications.

The socket is mounted using supplied hardware on the target PCB with no soldering, and uses the smallest footprint in the industry. The smallest footprint allows inductors, resistors and decoupling capacitors to be placed very close to the device for impedance tuning. The socket also incorporates a new quick insertion method so that ICs can be changed out quickly.

Contact: Ironwood Electronics, Inc., 11351 Rupp Dr., Suite 400, Burnsville, MN 55337 800-404-0204 or 952-229-8200 fax: 651-452-8400 E-mail: Web:

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