By: Process Photonics  09-12-2011
Keywords: laser, trimming, Power Meter

The RapiTrim workstation enables the realization of full production for embedded passive trim and test.  Through the use of proprietary fixtureless technology, probe cards and their inherent limitations are eliminated.  Restrictions on design layout have been lifted, and operational delays waiting for probe cards have been removed.

RapiTrim ä is a breakthrough new concept in production workstations for embedded passive and hybrid trim and test.   Users experience all the benefits of a fixtureless system without the sacrifice of slow trimming speed.  Circuit designers are no longer limited by the practical size limit on probe card designs; circuits can be as large as the panel itself.   Each of the four probes as well as the galvanometer-located laser beam have access to the whole 50x50mm field, ensuring that any component location, size, orientation and component density can be accommodated.  Probe fields are tiled together using the high accuracy XY stages.  The small field size allows the use of a smaller, lighter probe positioning mechanism, leading to rapid, accurate probe tip movement. 

In addition, the system can function as a stand-alone tester, with the trimming function turned off.

System Hardware

· Fast, high accuracy probe movement over 50x50mm field

· Standard or full Kelvin probe tips

· Isolated components use two probe tips; three probes available for trimming networked resistors

· Automated probe tip calibration

· Automated vision system for precision alignment, and scaling, offset, trapezoidal and rotation compensation

· Automated laser power calibration with integrated power meter

· Configured with high performance galvanometers for high speed trimming

· High performance motion and laser controller

· Galvanometer scanning field:  50x50 mm

· Maximum panel size 533mm x 635mm

(21" x 25")

· Vacuum platen for panel hold-down·

· Beam and probe placement accuracy:  15µm (3 sigma) over panel process area
· Ultra-stable steel weldment frame with resonance dampening
· Compliant with CE and North American regulations


· Optional automatic panel loader/unloader


· Electrical: 208 VAC, three phase, 5-wire "WYE", 15A, 60Hz; or 400 VAC, three phase, 5-wire "WYE", 10A, 50Hz.

· Exhaust: ablation debris removal through 3"  (76mm) diameter duct, 100 SCFM typical

· Dimensions (HxWxD): 93"x64"x86"

2356mm x 1626mm x 2192mm without optional load/unload bays

· Weight: 2813 kg (6233 lbs) net


System Control

· Windows XP® based user interface

· User friendly operator screens

· Compatible with all industry standard file formats

· Rapid file conversion and path optimization utility.

· Trim parameters are pre-defined in a tool Library, with custom tool generation available

· System monitoring for process integrity

· Full system diagnostics

·Saving of multiple job parameter files

·Password protection for access to configuration, set-up, and operating screens

·Emergency stop and safety interlock circuits

 Optional network  interface

Process Parameters

· Single-plunge, double-plunge and L-cuts available

· Up to 50 test points/sec.
· Resistance measured in real time using high speed A/D converter
· All measurement data logged as part of normal operation
· Minimum test pad size:  200µm for single tip, 400µm for double tip
· Resistor range:  0.1 Ohm to 100 MOhm
· Typical trimmed resistor distribution <1% (3σ)
· Wide control of laser pulse energy, repetition rate and step size.
· Consult PPI for processing trials for your circuits.
* specifications are subject to revision and change

Keywords: Integrated Power, laser, Laser Power Calibration, Power Meter, Probe Tips, System Hardware, trimming,

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