Carsem Semiconductor_Packaging & Test Services

Incoming Quality Assurance

In-Process Control

At Carsem Incoming Material is categorised as :
1. Carsem Purchased
2. Customer Consigned

Controls in Place

Visual Check

Dimensional/ Functional Test

Test Report/Certificate of Conformance

Use of Qualified Supplier

Periodic Supplier Audit Program

Supplier Corrective Action Management

CPK Reporting for Key Characteristics

Mainly by Statistical Process Control(SPC)

Use of Process Control/Positrol Plans & F.M.E.A.'s

Machine Set-up Checklist

QA In-process Audits

Flow	Responsible	Action
Description
Set-up Check	Technician/	Proceed upon Zero Defect
	Operator
In-Process Monitor	SPC Operator	Alert Technician/Supervisor for
		Investigation if Results Exceed
		Statistical Control Limits
QA Parameter Audit	QA Audito/ Supervisor	Stop Activity for Correction.Issue D.P.R.
		to Technician/Supervisor and Ensure
		Action taken before Resuming Process
QA Gate	QA Inspectors	Rejected Lot will Undergo 100%
		Re-inspectioin and QA Rebuy-off

Calibration

Equipment Control & Maintenance

To Control and Maintain the Accuracy of Measuring

and Testing Equipment per the Prescribed Standards.

Calibration System with Reference to :

Systems in Place :

Lot Traceability System

Control of Non-Conforming Materials

Features :

Lot Numbering System

Record Retention(Retrieve within 24 hours)

Data Logging Requirements

W.I.P. Material Part Numbering

Travellers Recording :

Traceable to Inspectors/Operators

Piece Part Number

Equipment/Machine Identification

Date of Manufacturing

Sub-Lot Identification

Device Identification

QA Gate Acceptance Status

Incoming	In Process & Test		QA Gate
.	.		.
Materials is On-hold Segregated and Identified	Product is Segregated and Identified		Identify/Tag Material and Segregate
.	.		.
QA/Engineering is Notified	Corrective Action is Required Before Resuming Production		Production 100% Re-Screening
.	.	.
Inform Customer if Consigned Material	Recapture and Screen Affected Parts
.	.		.
QA Initiate Material Review Board(MRB)
.
Disposition per MRB	Notify Customer if Rescreening is Not Possible for Customer Disposition		Notify Customer if Re-Screening is Not Possible for Disposition

Internal Audits

Environmental Control

Objective :
To Determine Compliance to Carsem's and Customer
Requirement. Carried out on Systems and Manufacturing
Steps.

Audit Items	Frequency
In-Process Procedure/ Critical Process	Minimum once per Month
Preventive Maintenance	Minimum once per Month
E.S.D.	Minimum once per Month
S.P.C.	Minimum once per Month
Calibration	Minimum once per Month
Warehouse Audit	Minimum once per Month
Quality System Audit	Once per Year

	Particle Count	Temperature	Humidity	DI-Water Monitor
Instrument	Lazer Particle Counter	Thermo- Hygrograph	Thermo- Hygrograph	Resistivity Meter
	.	.	.
Frequency	Min 2X/wk	Real Time Monitoring	Real Time Monitoring	Real Time Monitoring
	.	.	.
Limits	Cleanroom = 10k Semi-Cleanroom =100k (Particle Size : = 0.5micron)	23 +/- 4oC	50 +/- 10%RH	12.5 M-ohm cm