IPC-TM-650 EN 2022 试验方法.pdf - 第223页

1 Scope This test method uses pressure sensitive tape to determine the adhesion quality of platings, marking inks or paints, and other materials used in conjunction with Printed Boards. 2 Applicable Documents Commercial …

The measurement location can then be observed on the video

camera image and adjusted if necessary. The collimator area

indicated on the video image should fit entirely within the test

area of the sample specimen as seen in Figure 3. The sample

image is then focused with the autofocus feature of the instru-

ment.

A minimum of 5 measurements shall be made per measure-

ment location (0.060 in x 0.060 in pad). Using a polycapillary

instrument, the 5 measurements shall be made at different

locations on the pad or the instrument should be used in a

scanning mode across the pad. On each side of the test

specimen on which an electroless nickel coating has been

applied, three pads shall be measured. The Measurement

Report shall include as a minimum:

• Instrument used

• Size of the collimator

• Measurement time

• Excitation conditions

• Individual measurement results

• Statistical measurement parameters such as mean, stan-

dard deviation and relative standard deviation

• Specification Limits as required

• Operator, time and date

6 Notes

6.1 Measurement Results:

Table 2 demonstrates the excellent standard deviation

achievable (0.4 wt.-% for 60 s measuring time) for measure-

ment of P-concentration. It should be noted that a high total

spectral intensity of more than 50,000 cps is the result of very

high flux excitation by an instrument using a polycapillary X-ray

optic emitted from a relatively small measuring spot of less

than 50 µm Ø.

In the case of standard aperture beam collimation, the total

measuring time for similar precision is expected to be a factor

of 2-3 X longer.

IPC-2344-2

Figure 3 Positioning ofa1mmØCollimator on a 1.5 mm

x 1.5 mm [0.060 in x 0.060 in] ENEPIG Pad

Table 1 Measurement of Coating

Thickness and Phosphorus Content:

Typical achievable results for NiP/Cu/PCB samples

(1 mm collimator; measuring time 120 s)

CRM

Speciﬁed Values Measured Values

d (µm) %P d (µm) %P

CRM 1 5.20 (0.1) 0 5.29 (0.1) 0.0 (0.3)

CRM 2 7.35 (0.2) 0 7.43 (0.1) 0.1 (0.3)

CRM 3 1.2 (0.1) 8 (0.4) 1.2 (0.1) 7.7 (0.3)

CRM 6 2.89 (0.1) 10.6 (0.4) 2.88 (0.1) 10.7 (0.4)

CRM 4 6.9 (0.2) 9.0 (0.4) 6.5 (0.1) 8.9 (0.3)

CRM 5 5.90 (0.2) 11.2 (0.4) 5.7 (0.1) 11.1 (0.3)

CRM 7 11.20 (0.2) 11.3 (0.4) 11.2 (0.1) 11.4 (0.3)

Table 2 Evaluation of Measurement

Repeatability using a Polycapillary XRF:

5 Readings of the ENEPIG Sample shown in Figure 3.

Au Pd NiP wt-%P

Mean 0.049 µm 0.096 µm 3.2 µm 9.3

Standard

deviation

0.002 µm 0.002 µm 0.026 µm 0.413

50 nm Au/96 nm Pd/3.2 µm NiP9.3/Cu/PCB

(Small spot polycapillary instrument, measuring time 60 s)

IPC-TM-650

Number

2.3.44

Subject

Determination of Thickness and Phosphorus Content in

Electroless Nickel (EN) Layers by X-Ray Fluorescence (XRF)

Spectrometry

Date

03/16

Revision

Page4of4

Scope

This

test method uses pressure sensitive tape to

determine the adhesion quality of platings, marking inks or

paints, and other materials used in conjunction with Printed

Boards.

Applicable Documents

Commercial Item Description (CID) A-A-113

Tape,

Pres-

sure Sensitive, Adhesive.

Test Specimens

Any

preproduction, first article, or pro-

duction printed board. A minimum of three tests should be

performed for each evaluation.

Apparatus or Material

4.1 Tape

roll of pressure sensitive tape 3M Brand 600

1/2 inch wide or a tape as described in (CID AA-113), Type 1,

Class B, except that the tape may be clear. The shelf life of

the tape is one year.

Procedure

5.1 Test

Press

a strip of pressure sensitive tape, 50 mm

[2.0 in] minimum in length, firmly across the surface of the test

area removing all air entrapment. The time between applica-

tion and removal of tape shall be less than one minute.

Remove the tape by a rapid pull force applied approximately

perpendicular (right angle) to the test area. An unused strip of

tape must be used for each test.

5.2

Evaluation

Visually

examine tape and test area for evi-

dence of any portion of the material tested having been

removed from the specimen.

5.3

Report

The

report should note any evidence of material

removed by this test.

6 Notes

6.1

plating overhang breaks off (slivers) and adheres to the

tape, it is evidence of overhang but not an adhesion failure.

6.2

foreign material (oil, grease, etc.) is present on the test

surface the results may be affected.

6.3

Certification

of 3M Brand 600 1/2 inch tape to CID-A-A-

113 is not required. The 3M Brand 600 1/2 inch tape is avail-

able through most office supply stores.

2215

Sanders Road

Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.4.1

Subject

Adhesion,

Tape Testing

Date

05/04

Revision

Originating Task Group

Rigid Printed Board Performance Task Group

(D-33a)

Material

in this Test Methods Manual was voluntarily established by Technical Committees of IPC. This material is advisory only

and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this

material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.

Equipment referenced is for the convenience of the user and does not imply endorsement by IPC.

age1of1

ASSOCIA

TION CONNECTING

ELECTRONICS INDUSTRIES

电子技术应用　　　　　　　ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ

1.0

SCOPE

1.1

This procedure describes three methods to determine

the level of treatment transfer for treated copper foil.

2.0

APPLICABLE DOCUMENTS

ANSI/IPC-MF-150

‘‘Metal

Foil for Printed Wiring Applica-

tions,’’ October 1991, current revision.

ANSI/IPC-CF-152

‘‘Composite

Foil Specification,’’ current

revision

3.0

DEFINITION

3.1 Treatment

electro-mechanical or chemical process

applied to one or both sides of copper foil to enhance the

adhesion of the foil to the base laminate.

3.2

Treatment Transfer

Any

visible bond enhancement

that has transferred from the surface of the copper foil to the

laminate substrate.

4.0

EQUIPMENT

4.1

For

the Tape Transfer method a sample of the foil to

tested 152 mm x 152 mm.

4.1.1

Scotch Brand #600 Tape 19 mm wide.

4.2

For

the Strip Transfer method a representative sample of

foil, pressed to four plies of 7628 FR-4 prepreg to produce a

0.028 ml laminate, or as agreed upon by user and supplier.

4.2.1

Etching

system capable of removing copper foil from

base laminate.

4.3

For

the Weight and Filter Paper method a sample of

treated foil at least 203 mm x 51 mm.

4.3.1

Filter Paper strips at least 76 mm x 25 mm.

4.3.2

standardized weight of 250 grams with a 3/4 inch

surface

4.4

Visual Acceptance Standards

4.5 White Background

5.0 TEST PROCEDURE

5.1 Tape Transfer Method

5.1.1

Each

copper sample being tested will have tape 19

mm x 102 mm applied to the treatment side in the machine

direction of the foil. The tape should be firmly applied by hand.

5.1.2

Remove

the tape by quickly pulling on one end at an

acute angle.

5.1.3

The

tape should then be reaffixed, adhesive side down

on standard white paper.

5.2

Strip Transfer Method.

5.2.1

Image

a line on the laminate to a minimum of 1/8 inch

wide.

5.2.2

Etch,

clean and process using standard industry prac-

tices and equipment. If preferred, a cut or sheared sample

may be used.

5.2.3

Pull

the strip of foil back 1 inch to expose the area

directly under the foil.

5.2.4

Visually

examine this area by placing the laminate strip

against a white background and comparing the amount of

transfer with the standard.

5.3

Weight

and Filter and Paper Method

5.3.1

Place

the copper foil sample on a firm, flat surface

with the treatment side up.

5.3.2

Place

the #2 filter paper on the copper foil sample with

the rougher side of the paper against the foil.

The

Institute for Interconnecting and Packaging Electronic Circuits

2215 Sanders Road • Northbrook, IL 60062-6135

IPC-TM-650

TEST

METHODS MANUAL

Number

2.4.1.5

Subject

Determination

of Treatment Transfer

Date

5/95

Revision

Originating Task Group

Treatment Transfer

Material

in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only

and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this

material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.

Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.

age1of2

电子技术应用　　　　　　　ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ