Lead Free Bar (EFB-3N06(α) : Sn0.50.06Ni(α)) www.ecojoin.co.kr EF Bar Series
(Use : Wave ing) EFB-3N06(α) (Sn0.50.06Ni(α)) Ecojoin Co., Ltd (449-010), 723-3, KoRimDong, YongInSi, KyungKiDo, Korea Http://www.ecojoin.co.kr Tel : 82-31-339-0683, Fax : 82-31-339-0684
CONTENTS The Features of Product, Performance, Reliability, and Application of mass-production about Lead Free Bar EFB-3N06(Sn0.50.06Ni(α)) I. Features of Product II. Explanation of Product III. Properties of Product (1) Properties of Dross (2) Properties of Spreadability and Wettability (3) Properties of Mechanical (4) ing Reliability IV. Properties of Mass-Production
I. Features of Product Excellent product minimizing Dross generation. Excellent product of less Pad Erosion. Excellent wettability and Spreadability. Superior joining Reliability. II. Explanation of Product 1. Product Name E F B 3 N 0 6 (α) Type Composition of Alloy 2. Melting Point Solid : 220 Liquid : 229 3. Density 7.4 g/ cm3 4. Composition of Alloy (Unit : wt% ) Com. Sn Ni α Pb Zn Bi Fe Al As Cd Sb Quan tity Ref. 0.5 0.06 0.015 0.006 0.007 0.009 0.002 0.002 0.001 0.001 0.03 5. Structure of Alloy and Uniformity of Composition Picture of SEM for Sn0.50.06Ni(α) Picture of SEM for Sn0.50.06Ni(reference)
III.Properties of Product 1. Dross Test EFB-3N06α Bar is excellent product minimizing Dross generation. Sn--Ni-α solder Velocity of rotation : 60 (rpm) Temperature of : 250 ( o C) Time : 120 (min) Picture of equipment in dross test Experimental Setup Result of Dross Test I (250 ) (I-1 ) Condition of Dross Test Material of Test Equipment of Test Weight of Sample Condition Temperature Speed EFB-3N06(α), Sn0.50.06Ni, Sn0.7(α), Sn0.7,Sn3Ag0.5(α) Equipment of Dross Test 2 Kg 250 60 rpm (II-2) Result of Dross Test (Unit : g) Composition of Alloy 30 min 60 min 90 min 120 min Sn0.50.06Ni(α) 21 40 65 87 Sn0.50.06Ni 167 364 531 709 Sn0.7(α) 93 196 280 365 Sn0.7 168 344 501 684 Sn3Ag0.5(α) 84 176 283 378
Temperature of : 250 Weight of Dross (g) 600 500 400 300 Sn0.50.06Ni(α) Sn0.50.06Ni Sn0.7(α) Sn0.7 Sn3Ag0.5i(α) 200 100 0 0.5 1 1.5 2 Time (hr) Result of Dross Test II (265 ) (II-1). Condition of Dross Test EFB-3N06(α), Sn0.50.06Ni, Sn0.7(α), Sn0.7 Material of Test,Sn3Ag0.5(α) Equipment of Test Equipment of Dross Test Weight of 2 Kg Sample Condition Temperature 265 Speed 60 rpm (II-2). Result of Dross Test (Unit : g) Composition of Alloy 30 min 60 min 90 min 120 min Sn0.50.06Ni(α) 210 393 605 780 Sn0.50.06Ni 268 545 809 1067 Temperature of : 265 1000 Sn0.50.06Ni(α) Sn0.50.06Ni Weight of Dross (g) 800 600 400 200 0 0.5 1 1.5 2 Time (hr)
2. Properties of Spreadability and Wettability Evaluation of Properties in Spreadability EFB-3N06(α) BAR have excellent spreadability in 78% of Spreading rate. (D-H) Spread factor= D D=1.24 V 1/3 V=Mass/Density Pad : Non-oxygen Pad X 100 D Spreading test H Size : 30 X 30 X 0.4 mm 1. Results Composition of Alloy 1 2 3 4 Average Sn0.50.06Ni(α) 76.53 77.81 79.12 78.32 77.95 Sn0.50.06Ni 79.33 78.38 80.51 74.68 78.22 Sn0.7(α) 74.67 75.35 75.21 75.69 75.23 Sn0.7 74.8 75.51 76.56 75.11 75.50 Sn3Ag0.5(α) 77.1 78.93 81.19 78.56 78.79
Evaluation of Properties in Wettability EFB-3N06(α) BAR have excellent Wettability regardless of adding P. 1. Condition of Measurement Material of Test Equipment of Test Temperature Conditions Dipping Time Dipping Depth EFB-3N06(α), Sn0.50.06Ni, Sn0.7(α), Sn0.7 Malcom, SP-2 (Globule Type) 255 3 sec 3 mm 2. Results Composition of Alloy Item 1 2 Average Sn0.50.06Ni(α) Wetting Time(sec) Wetting Force (mn) 0.84 2.060 0.78 2.031 0.81 2.045 Sn0.50.06Ni Wetting Time(sec) Wetting Force (mn) 0.720 2.070 0.750 2.109 0.740 2.089 Sn0.7(α) Wetting Time(sec) Wetting Force (mn) 0.880 1.962 0.910 2.090 0.895 2.026 Sn0.7 Wetting Time(sec) Wetting Force (mn) 0.720 2.030 0.740 2.070 0.730 2.050 Wetting Time Wetting Time (sec) 0.8 0.6 0.4 Wetting Force 2.5 2.0 1.5 Wetting Force (mn) 0.2 1.0 Sn0.50.06Ni(α) Sn0.50.06Ni Sn0.7(α) Sn0.7
3. Properties of Mechanical 1. Conditions of Measurement Material of Measurement Equipment of Test EFB-3N06(α),Sn0.50.06Ni, Sn0.7(α), Sn0.7 Instron 8516 Conditions Test Sample C/H Speed KS 4 호 1.0mm/min 2. Result of Measurement Composition of Alloy Tensile Strength (MPa) Elongation(%) Reduction of Area (%) Sn0.50.06Ni(α) 29.65 10.67 45.6 Sn0.50.06Ni 27.79 6.75 59.1 Sn0.7(α) 31.12 7.19 52.0 Sn0.7 28.42 11.48 55.7
4. Reliability of Joint EFB-3N06(α) Bar have superior joining reliability with 85 kgf of joining strength. Evaluation of Properties in Joining Strength 1. Condition of Measurement Material of Test Equipment of Test Test Sample Condition C/H Speed Material of Plating EFB-3N06(α), Sn0.50.06Ni, Sn0.7(α), Sn0.7 Instron 8516 Measuring strength after ing in Jig 1.0mm/min lead, 42Alloy lead 2. Results Sn0.50.06Ni(α) lead 42Alloy lead Joining Strength (Kgf) (UTS) 84.7 82.38 Evaluation of Properties of Creep Condition 125 Load Holder 1000 gf 1,000gf of static load /125 Schematic of IMD Specimen in creep test Picture of SEM 1Kg of static / 125 after 500 hr
Properties Represented when the joint is left at high temperature Aging 0h Aging 100h Aging 250h Aging 500h Sn-0.5-0.06Ni Sn-0.5-0.06Ni-α Sn-0.7 Sn-0.7-α
IV. Properties of Mass-Production in ing 1. Flow ing Test Conditions Conditions Equipment Measuring Equipment Material of Test PCB Size Temperature Flow M/C Microscope of low magnification Microscope of 3 dimension EFB-3N06(α) 195 X 150 265 ShinMyung SAS 620 Observing microscope Observing microscope Temperature Profile of Flow Peak Temperature 265 Preheating Temperature 100 Optimal Temperature Profile Classification Conveyer Speed Preheating Temperature Temperature of Bath Condition 1.3 m/min 100 265
2. Results in Properties of Flow ing EFB-3N06(α) Bar is possible to obtain good condition of soldering with excellent fillet, without any Defect such as icicle, bridge, etc. TEST PCB Board Excellent Fillet Not occurring icicle After ing Results Condition Fillet icicle Etc. Results Excellent no no