Qtest Technologies Pte Ltd 2, Kaki Bukit Ave 1, #06-04, Singapore 417938. Homepage: www.qtest-tech.com, Sales: sales@qtest-tech.com Tel: +65 6383 2221. Fax:+656383 3345

Measurement System

1. Resistance measure: 0.1uohm~10Mohm

2. Resolution: +0.1uohm@10mohm range

3. Accuracy: ±0.020% rdg. ±0.007 % fs

4. Multiplexer card: Solid State Relay (SSR) with 32 channels 4 wire (Kelvin) measurement.

5. Capable of interface to Standard wireless probe card

6. Accuracy traceability : Hioki Model 3545-01

** “Hioki” is a brand of Hioki E.E. Corporation, Japan

QTEST Ultra Low Ohm &

Thin Film Laser Resistor Trimmer

Calibration System

1. PR camera to Substrate on Work-holder.

2. Substrate on Work-holder to Laser.

3. Substrate on Work-holder to Probe tip.

4. Qtest measurement to Hioki to ensure accurate measurement and traceability.

Trimming Specifications for Ultra Low and Thin Film Resistors

1. Trimming capability: Thin film, Lead frame, Metal

Strip, FOS

2. Trim Accuracy: capable from +0.1% upwards de-pending on yield requirement and trim time per unit.

3. SD%: from 0.05% ( depend on trim factors)

4. Trim Yield: normally >99% but depend on panel quality, material, thickness and customer’s trim re-quirement.

5. Trim time per unit: depends on material, laser used, IRV to target, SD% requirement.

6. Resistive material thickness: from 1um to 300um (depending laser type used).

7. Other materials: to be confirmed after test trim.

8. Laser: laser depends on type of material to trim

9. Trim Algorithm: Proprietary Q-trim from Qtest Technologies Pte Ltd.

10. Trim type: Single/Multiple Plunge/Scan/custom

Qtest is able to develop new trim technique/method to handle new type of chip resistors.

***performance may vary with different materials and thickness

Site Environment Requirement 1. Power Supply: Single phase 230V/16A.

2. Room Temperature: Air Conditioned at constant

temperature.

3. Compressed Air Supply: min 5 PSI, free of dust, oil

and water.

4. Vacuum level: -40KPa

Mechanical Handler Specifications

1. Work-Holder stage: 50x60mm and 60x70mm

2. Position repeatability: +-10um;

3. Position Accuracy: +-15um;

4. XY stage repeatability: +-15um;

5. Z-Stroke step size: 0.01mm-10mm (programmable)

6. Vacuum table: Within 130x135mm

7. XY stage : motorized theta

8. Blower & vacuum system : to suck up debris from trimming.

Camera/Optics 1. PR Camera for automatic panel positioning and

measurement

2. User Aid camera .

3. Zoom in and out capability.

In loader/Out loader with stacker Removable for easy loading and unloading. Special design available Footprint: 1200 x 1600 x 1705 (mm) Weight: approx 1000kg.

Qtest reserves the right to change its equipment specifications without prior notice

TECHNOLOGY AT WORK FOR YOU

Trimmer capable of trimming Ultra Low and Thin Film resistors

CONTINUOUS RESEARCH PROVIDES A TOTAL SOLUTION

Qtest Trimmer can be integrated to Green, UV or IR laser to

trim different materials.

It’s R&D and investigative capabilities allow it to interface the

best laser system to be used on the different materials to en-

able the best trimming results.

Introduction:

The present resistor trimming technologies were developed some 30

years ago and have not really kept up with the time. The most com-

monly used trimmer today is only capable of trimming more than

50mohm and with very low yield and poor SD.

Qtest has developed its capability over the last 6 years and is able to

provide trim capability from sub-milli-ohm using its Ultra Low Ohm

Trimmer and with very high yield of over 99%.

Qtest ULO-100 was designed and developed from ground up for the

ultra-low ohm trimming industry.

High Yield, Low SD, Repeatable and Consistent results!

One stop solution Qtest has the design and development capability to help provide a one stop solution in integration of its

test and measurement system to test handling systems to provide a very efficient and productive machine.

Most important point is that Qtest has the technical capability to help solve problems encountered by the

users!

Qtest Trimmer Capability

1. SD from 0.03% depending on trimming speed and yield requirement.

2. Yield>99%,able to reach 100%

3. Accuracy: standard:+0.5%, able to reach +0.1

Qtest’s Trimmer is capable of trimming Ultra Low Ohm and

Thin Film Resistors.

All trimmers in the market is designed to trim either low

Ohm or thin film but not on one machine. Qtest trimmer is

capable of trimming Ultra Low ohm and thin Film on the

same machine. The only requirement maybe to change the

laser.

Qtest uses 2 measurement system to achieve the accuracy

and SD needed for high yield production. The final measure-

ment and reference system is the Hioki* 35345. All the Final

measurements are done using this meter. Therefore the us-

ers should have the confidence of the resistors being

trimmed and measured accurately.

Just imagine trying to trim and measure to 0.1%.???

Qtest ULO trimmer is capable of

trimming bother Ultra Low ohm

and Thin Film resistors.

Advantage of Qtest Ultra Low and Thin Film Trimmer.

Most of the laser trimmer found in the market was developed about 30 years ago in the US

and designed mainly for the mid-range resistance trimming market. It is good for trimming

resistance from 100mohm to 10Mohm.

However with the need for ultra low ohm resistor for the huge electrical power industry as

such the solar panels, electric cars, mobile phones and thousands of electronics devices that

need accurate and very low ohm resistors, this market is growing and huge.

Qtest Technologies has developed a trimmer capable of trimming both Ultra Low Ohm and

Thin Film to offer the best value for money trimmer.

The important point is that Qtest has the technical capabilities to provide continuous tech-

nical support to its customers and able to customize solution. We have been doing this since

1992.

Qtest trimmer is designed to be very versatile . It can be setup to trim resis-tors of different sizes and materials.