Transcend TT-ALSC-300

Laser Cleaner

Rev. 1.5CONFIDENTIAL

EQUIPMENT OVERVIEW

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Q-Switched Nd:YAG Solid-State Laser Servo Motor Driven XY Table for automatic and accurate indexing of socketSocket Holder Assembly of XY Table can be configured either Single Site or Quad SiteWater-cooled system User friendly system software Laser system is equipped with password-protected authorization Emergency Stop Button Temperature and Tilt Sensor Safety Door Switch Integrated Vacuum System to remove fumes

LASER CLEANER FEATURES

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EXTERNAL CABINET PARTS Tower Light

Touch Screen Monitor

Power Button and EMO Button

Laser System Touch Screen GUI

Exhaust Duct

Main Door Access for Laser and XY Table

Water Level Indicator Window

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INSIDE THE CLEANING CHAMBER

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Laser Gun

Socket Clamp

Joystick XY Table

EMO SwitchManual Firing Button

LASER MODULE

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XY TABLE SOCKET HOLDER ASSEMBLY – SINGLE SITE

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XY TABLE SOCKET HOLDER ASSEMBLY – QUAD SITE

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SPECIFICATION

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• Laser Type: Q-Switched Nd: YAG solid-state laser• Wavelength: 1064nm/532nm• Energy (Single Pulse): 400mJ• Duration (Width): ≤ 15ns• Spot Size: 5mm - 10mm• Pulse Repetition Rate: 1Hz, 2Hz, 3Hz, 4Hz, 5Hz, 6Hz• Cooling Method: Closed-loop distilled water cycle• Power Supply: 220V±10%, 10A, 50Hz

Operating Conditions

• Ambient Temperature: 10°C - 35°C• Relative Humidity: ≤ 70%• Atmospheric Pressure: 860hPa - 1060hPa• Power Supply: 230V±10%, 5A, 50Hz

Storage Conditions

• Ambient Temperature: 4°C - 55°C• Relative Humidity: ≤ 93%• Atmospheric Pressure: 860hPa - 1060hPa

LASER SPECIFICATION

CONFIDENTIAL Note: Specification is subject to change without prior notice.

• Industrial PC: ADLINK MXC-2000 Series

• CPU: Intel® Atom™ N270 1.6 GHz processor + 945GSE chipset, 500GB HDD

• Software: Windows XP

CPU

CONFIDENTIAL Note: Specification is subject to change without prior notice.

FOOTPRINT

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MECHANICAL DIMENSION

850

18301680

499

1170

0

650

898

650

650

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Side View Top View

USER INTERFACE

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LASER MODULE TOUCH SCREEN INTERFACE

Password-protected touch screenuser interface to give access toauthorized personnel only. TheUSER password has a minimum of 4digits and can be up to maximum of8 digits long.

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Pulse Counter Box

Guide LaserVoltage Setting

Energy Setting

Repetition Setting

Temp Setting

On the main menu, the settings and configuration of parameters like voltage, energy,frequency and temperature are shown. All these parameters can be modified on the lasersettings with a password request.

LASER MODULE TOUCH SCREEN INTERFACE

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SYSTEM SOFTWARE GUI

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HOW IT WORKS

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CLEANING OPERATION

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Laser Light

Socket under clean

Laser BeamThe TT-ALSC-300 Laser Cleaner system is

designed to remove oxides, solder stains,etc., in a broad-brushed approach, withlaser spot sizes greater than 6mm. Shortand rapid laser pulses produce micro-plasma burst, shockwave and thermalpressure which results in the sublimationof the target surface contaminants(vaporized).

Metal surfaces are well-suited for lasercleaning applications. Our optimized laserbeam and energy settings will not alter ordamage the laser treated surface. Onlythe surface dirt or oxide targeted forremoval is affected and will not to reactwith the base metal surface.

Base Metal Base Metal

Oxides and contaminants

After Laser Cleaning

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CLEANING EFFECTIVITY – Pogo Pins

Before Laser Cleaning After Laser Cleaning

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CLEANING EFFECTIVITY – Yamaichi Socket

Before Laser Cleaning After Laser Cleaning

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CLOSE-UP VIEWBefore and After Laser Cleaning Before and After Laser Cleaning

The laser only removes the surface contaminants without inducing any substrateor plating damage on the pins.

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Before Cleaning

After Cleaning

SEM/EDX PIN COMPARISON

Carbon levels and

oxides werereduced

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EFFECT OF LASER ON SOCKET HOUSING MATERIAL

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TORLON

Discoloration is seen on the Torlon material after subjecting it to Laser at 780V energy and 30 shots. No significant effect or damage on the material.

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CERAMIC PEEK

Results on NHK Ceramic Peek after 100 shots at various power levels. Only discoloration isseen and no damage or effect on the material.

730V 740V 750V 770V

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DAMAGE THRESHOLD TEST ON CERAMIC PEAK

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• Each spot was subjected todamage threshold test with aLaser energy of 980V andshot 100 times on the samespot.• Only discoloration is seenon the surface of the CeramicPeek and no damage on thematerial.

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Mask is used so that the exposed area of the socket housing is covered and only the pins aretargeted by the laser. The mask narrows the laser beam specific to pogo pin area only andavoid burn/discoloration to general area of socket base. In this case, a mask is neededbecause the handler has a “device presence check” feature which could mistakenly detect thediscolored area on the socket to be a device.

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MaskMask

Pogo Pin OpeningLaser Beam

Socket Housing Socket Housing

Pogo Pin

USE OF CUSTOMIZED MASK TO PREVENT DISCOLORATION

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CONCLUSION

• Other than the discoloration on the socket housing material, the laser beam has nosignificant effect and damage. The laser did not alter the material characteristics such ussurface finish, hardness and dimension.

• A customized mask can be used if the discoloration on the socket housing is critical,particularly on handler with special feature like “device presence check”. Mask can be usedalso if the discoloration on the socket material is a 5S audit issue.

COMPARISON VERSUS CONVENTIONAL BRUSH

CLEANING

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Criteria Brush Cleaning Laser Cleaning Remarks

First Pass Yield 96.25% 97.6% Laser Cleaning improved yield by

1.35%

Cleaning Time 5-10 minutes 10 seconds to 1 minute

Laser Cleaning is 5~10times faster

Number of InsertionsBefore Cleaning

70K 225K Laser Cleaning interval is 220% longer

Effectiveness Passed Passed Both passed on visual inspection

Cleaning Frequency 13x for 1Million tested units

4x for 1Million tested units

Ratio between Brush and Laser Cleaning is

13:4

Note: Data is based from customer evaluation. Results may vary depending on customer set-up condition and application.CONFIDENTIAL

• Improved 1st pass yield due to better CRES on pins.

• Less frequency of cleaning which improves equipment utilization and translates for more production output ( less machine downtime and re-test of units).

• Average downtime occurrences is reduced by almost 70%

• Faster cleaning time

• No consumable media – no abrasives, chemicals and solvents to purchase, handle, store and dispose.

BENEFITS OF LASER CLEANING VERSUS BRUSH CLEANING

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INSTALLED BASECustomer 2012-2014 2015 2016

Infineon Singapore

STMicroelectronicsCalamba

STMicroelectronics Malta

Linear Technology Singapore

TTI Taiwan

ON Semiconductor Seremban

Analog Devices

Renesas KL

THANK YOU

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Contact Us

Transcend Technologies (S) Pte LtdBlk 19 Kallang Avenue#05-163 Singapore 339410Tel: +65 6748 9178Fax: +65 6748 0254

William FoongEmail: william@transcendt.comPhone: +65 9661 0277

Edwin SeakEmail: edwin@transcendt.comPhone: +65 9679 0089

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www.transcendt.com