UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549 

SCHEDULE 13G 

Under the Securities Exchange Act of 1934 

(Amendment No. )* 

PDF Solutions, Incorporated 
(Name of Issuer) 

Common Stock 
(Title of Class of Securities) 

693282105 
(CUSIP Number) 

December 31, 2003 
(Date of Event Which Requires Filing of this Statement) 

heck the appropriate box to designate the rule pursuant to which this 
chedule is filed: 
X] Rule 13d-1(b) 
] Rule 13d-1(c) 
] Rule 13d-1(d) 

The remainder of this cover page shall be filled out for a reporting 
erson's initial filing on this form with respect to the subject class 
f securities, and for any subsequent amendment containing information 
hich would alter the disclosures provided in a prior cover page. 

he information required in the remainder of this cover page shall not 
e deemed to be "filed" for the purpose of Section 18 of the Securities 
xchange Act of 1934 ("Act") or otherwise subject to the liabilities of 
hat section of the Act but shall be subject to all other provisions of 
he Act (however, see the Notes). 

USIP: 693282105                                                Page 1 of 7 

1   NAMES OF REPORTING PERSONS 
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) 
Capital Research and Management Company 
95-1411037 

2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE          
INSTRUCTIONS)                                                 (a)     

(b)     
3   SEC USE ONLY 

4   CITIZENSHIP OR PLACE OF ORGANIZATION 

Delaware 

5   SOLE VOTING POWER 

NONE 

6   SHARED VOTING POWER 
NUMBER OF         
SHARES         NONE 
BENEFICIALL        
Y OWNED BY 
7   SOLE DISPOSITIVE POWER 
EACH           
REPORTING        2,040,000 
PERSON 
WITH: 
8   SHARED DISPOSITIVE POWER 

NONE 

9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 

2,040,000     Beneficial ownership disclaimed pursuant to Rule 13d-4  

10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES 
(SEE INSTRUCTIONS) 

11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 

8.8% 

12  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) 

IA   

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1   NAMES OF REPORTING PERSONS 
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) 
SMALLCAP World Fund, Inc. 
95-4253845 

2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE          
INSTRUCTIONS)                                                 (a)     

(b)     
3   SEC USE ONLY 

4   CITIZENSHIP OR PLACE OF ORGANIZATION 

Maryland 

5   SOLE VOTING POWER 

1,500,000 

6   SHARED VOTING POWER 
NUMBER OF         
SHARES         NONE 
BENEFICIALL        
Y OWNED BY 
7   SOLE DISPOSITIVE POWER 
EACH           
REPORTING        NONE 
PERSON 
WITH: 
8   SHARED DISPOSITIVE POWER 

NONE 

9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 

1,500,000       

10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES 
(SEE INSTRUCTIONS) 

11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 

6.4% 

12  TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) 

IV   

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SECURITIES AND EXCHANGE COMMISSION 
Washington, DC 20549 

Schedule 13G 
Under the Securities Exchange Act of 1934 

mendment No.  

tem 1(a)     Name of Issuer: 
PDF Solutions, Incorporated 

tem 1(b)     Address of Issuer's Principal Executive Offices: 
333 West San Carlos Street, Suite 700 
San Jose, CA 95110 

tem 2(a)     Name of Person(s) Filing: 
Capital Research and Management Company and SMALLCAP World 
Fund, Inc. 

tem 2(b)     Address of Principal Business Office or, if none, 
Residence: 
333 South Hope Street 
Los Angeles, CA  90071 

tem 2(c)     Citizenship:   N/A 

tem 2(d)     Title of Class of Securities: 
Common Stock 

tem 2(e)     CUSIP Number: 
693282105 

tem 3     If this statement is filed pursuant to sections 240.13d-1(b) 
or 240.13d-2(b) or (c), check whether the person filing is a:  
(d)     [X]     Investment company registered under section 8 
of the Investment Company Act of 1940 (15 U.S.C. 80a-8). 
(e)      [X]     An investment adviser in accordance with 
section 240.13d-1(b)(1)(ii)(E). 

tem 4     Ownership 

Provide the following information regarding the aggregate 
number and percentage of the class of securities of the issuer 
identified in Item 1. 

See pages 2 and 3 

(a)    Amount beneficially owned: 
(b)    Percent of class: 
(c)    Number of shares as to which the person has: 
(i)    Sole power to vote or to direct the vote: 
(ii)   Shared power to vote or to direct the vote: 
(iii)  Sole power to dispose or to direct the disposition of: 
(iv)   Shared power to dispose or to direct the disposition of: 

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Capital Research and Management Company, an investment adviser 
registered under Section 203 of the Investment Advisers Act of 
1940 is deemed to be the beneficial owner of 2,040,000 shares 
or 8.8% of the 23,302,000 shares of Common Stock believed to be 
outstanding as a result of acting as investment adviser to 
various investment companies registered under Section 8 of the 
Investment Company Act of 1940. 

SMALLCAP World Fund, Inc., an investment company registered 
under the Investment Company Act of 1940, which is advised by 
Capital Research and Management Company, is the beneficial 
owner of 1,500,000 shares or 6.4% of the 23,302,000 shares of 
Common Stock believed to be outstanding. 

tem 5     Ownership of Five Percent or Less of a Class.  If this 
statement is being filed to report the fact that as of the date 
hereof the reporting person has ceased to be the beneficial 
owner of more than five percent of the class of securities, 
check the following: [ ] 

tem 6     Ownership of More than Five Percent on Behalf of Another 
Person: N/A 

tem 7     Identification and Classification of the Subsidiary Which 
Acquired the Security Being Reported on By the Parent Holding 
Company or Control Person.: N/A 

tem 8     Identification and Classification of Members of the Group:  
N/A 

tem 9     Notice of Dissolution of Group:  N/A 

tem 10     Certification 

By signing below, I certify that, to the best of my knowledge 
and belief, the securities referred to above were acquired and 
are held in the ordinary course of business and were not 
acquired and are not held for the purpose of or with the effect 
of changing or influencing the control of the issuer of the 
securities and were not acquired and are not held in connection 
with or as a participant in any transaction having that purpose 
or effect. 

Signature 

After reasonable inquiry and to the best of my knowledge and 
belief, I certify that the information set forth in this 
statement is true, complete and correct. 

Date:          February 10, 2004 

Signature:     *Paul G. Haaga, Jr. 
Name/Title:    Paul G. Haaga, Jr., Executive Vice 
President 
Capital Research and Management Company 

USIP: 693282105                                                Page 5 of 7 

Date:          February 10, 2004 

Signature:     *Chad L. Norton 
Name/Title:    Chad L. Norton, Secretary 
SMALLCAP World Fund, Inc. 

*By    /s/ Anna J. Griffith 
Anna J. Griffith 
Attorney-in-fact 

Signed pursuant to a Power of Attorney dated January 14, 
2004 included as an Exhibit to Schedule 13G filed with 
the Securities and Exchange Commission by Capital 
Research and Management Company on February 6, 2004 with 
respect to Air Products and Chemicals, Incorporated. 

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AGREEMENT 

Los Angeles, CA 
February 10, 2004 

Capital Research and Management Company ("CRMC") and SMALLCAP World 
und, Inc. ("SCWF") hereby agree to file a joint statement on Schedule 
3G under the Securities Exchange Act of 1934 (the "Act") in connection 
ith their beneficial ownership of Common Stock issued by PDF 
olutions, Incorporated. 

CRMC and SCWF state that they are each entitled to individually use 
chedule 13G pursuant to Rule 13d-1(c) of the Act. 

CRMC and SCWF are each responsible for the timely filing of the 
tatement and any amendments thereto, and for the completeness and 
ccuracy of the information concerning each of them contained therein 
ut are not responsible for the completeness or accuracy of the 
nformation concerning the others. 

CAPITAL RESEARCH AND MANAGEMENT COMPANY 

BY:              *Paul G. Haaga, Jr. 
Paul G. Haaga, Jr., Executive 
Vice President 
Capital Research and Management 
Company 

SMALLCAP WORLD FUND, INC. 

BY:              *Chad L. Norton 
Chad L. Norton, Secretary 
SMALLCAP World Fund, Inc. 

By  /s/ Anna J. Griffith 
Anna J. Griffith 
Attorney-in-fact 

Signed pursuant to a Power of Attorney dated January 14, 2004 
included as an Exhibit to Schedule 13G filed with the Securities 
and Exchange Commission by Capital Research and Management Company 
on February 6, 2004 with respect to Air Products and Chemicals, 
Incorporated. 

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