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The HEP-YR02UV laser trimmers offers a new approach to trimming and fine-tuning thick-film hybrid and surface-mount devices. Equipped with a new, solid-state ultraviolet (355 nm) laser, the HEP-YR02UV utilizes a photo-ablation process to create smaller, cleaner kerfs in a variety of  resistors and conductor materials.

Unlike the higher frequency laser wavelengths, which remove material through heat and evaporation, HEP's UV process result in higher coupling efficiencies and greater absorption of  the laser wavelength. Successful applications include thick-film,thin-film, capacitor and inductor trimming. In addition, the system can be used in a variety of micromachining applications where quality and size of cut are critical parameters. The UV-YAG diode pumped laser provides superior performance and low maintenance. Improved stability provides the user with greater production control of the trimming/machining process.

For passive or active (functional) trimming, HEP-YR02UV offers high-speed measurement techniques, the ability to connect to IEEE-488 or USB-programmable measurement equipment or testers and a low noise environment.

Other elements of HEP-YR02UV laser trimmers including the Industry Standard PC, built-in pattern recognition, closed-loop step and repeat parts handler, Image identify and high-speed measurement system, are the same proven sub systems that establish HEP LASER as the leading supplier of laser trimming systems in China.

Specifications:

Laser Beam Positioning

Type: Temperature controlled, scanning galvanometer with closed loop servo control

Trim Area: 102 mm X 102 mm

Point-to-Point Move Time: Typical moves in 6 ms with software programmable Galvo Settle time

Maximum Cutting Speed: 6000 mm/s

Resolution: 2.5 um

Repeatability: 5 um

Laser

Type: Diode-pumped, Q-switched Nd:YAG

Wavelength: 355nm

Output Power: 1.5W @10kHz

Maximum Repetition Rate: 20 kHz

Optics

Typical Spot Size: 10~30 um (102 mm x 102 mm trim field)

Depth of Focus: 0.8 mm

*Actual kerf widths are material, optics and laser wavelength dependent

Alignment/Viewing

Alignment: Automatic substrate and multi-component alignment using machine vision

Illumination: Red light emitting diode (LED) for cold light illumination

Viewing: CCTV viewing optics

Magnified view of trim area:

   Minimum Field Size (Maximum magnification): 2.5 mm x 2 mm

   Maximum Field Size (Minimum magnification): 10 mm x 8 mm

Orientation: Image identify

System Computer

Type: Industry standard PC

Monitor: Color LCD display

Interfaces: RS232, USB, parallel, IEEE-488 and Ethernet interfaces

Option: Programmable I/O card

Software

HepTrim Software: Menu/form driven user interface, interactive setup windows, standard trim database, standard data-logging routines and trim and test sensitivity curves for functional and passive trimming

Character Generation: Menu driven, compatible with trim programs, for part numbering, serial numbering and date coding. High-level compiler-based trim language and integrated edit/compile sequence, on-line help

Service Software: Menu-based, module level diagnostics and system calibration checking routines

Measurement Subsystem-Resistance

Type: Four terminal, force current/measure voltage

Range: <1Ωto 104 MΩ(22 binary ranges)

Accuracy:

Integrator: +/- [0.01% range/reading + 0.05 * R (MΩ) + 10mΩ]

    Successive Approximation: +/- [0.1% + Integrator accuracy]

Resolution: Approx.0.002% of range or with SW integration 0.0001%

Conversion Speed: 35 us

Calibration: Automatic

Guard Offset: 1 mV

Active Guard Current: Up to 100 mA

Trim Comparator Resolution: 0.002% of range

Measurement Subsystem-DC Voltage

Type: Differential

Range: 1 V to 10 V DC (5 ranges)

Accuracy: Approx. 0.1% of reading

Resolution: 40uV on 1V range

Calibration: Automatic

Maximum Input Voltage:10 V

Measurement Subsystem-Matrix

Type: Reed relay

Configuration: Full crosspoint where any probe can be connected to any measurement line

Number of Matrix Pins: Up to 64 points

Measurement Options: Synchro Trim allows use of HP34410A Multimeter to perform tracking trims

Remote Laser Workstation

Enables remote operation of the system via the IEEE-488 or USB interface

Handler Options

Step and repeat parts handler with prober

Type: Servo driven X-Y stages, closed loop

Stepping Field: 200 mm x 200 mm

X-Y Resolution: 2.5 um

X-Y Accuracy: Better than 5 um over the trim area

Prober: Programmable, windpipe driven, closed loop

Prober Travel: Programmable up to 20 mm

Prober Resolution: 3.2 um

Probe Card: Industry standard 165 mm

Cooler

Type: Air

Optional Cantilever Frame

Light duty frame for customers who want simple test fixture solution

Optional Custom Parts Handlers

System accommodates third-party parts handlers and enclosures