SAC305 RA Solder Wire
4925–4926 Technical Data Sheet
ISO 9001:2008 Registered Quality System. Burlington, Ontario, CANADA
SAI Global File: 004008
4925–4926
Description
The 4925–4926
SAC305 RA Solder Wire
is an electronic grade, lead-free solder wire.
It uses the predominant lead-free alloy composition and exceeds J-STD-006C and meets ASTM B 32 purity
specifications. It is complemented with a rosin activated, medium activity flux that is classified as ROM1
according to J-STD-004B. This solder is a great alternative to leaded solders.
The 4925–4926 non-leaded solder series achieve a consistent solder and flux percentage through a state-
of-the-art, extrusion, wire-drawing machine. This machine continually monitors the wire to prevent voids
and ensure consistency, providing a top-grade solder wire.
Benefits & Features
•
•
•
•
•
•
•
Lead free & rosin activated flux
Alloy exceeds J-STD-006C and meets ASTM B 32
purity requirements
Flux meets J-STD-004B
Fast wetting
Fast flowing
Non-corrosive
Non-conductive residue
C
OMPLIANCE
✓
Dobb-Frank (DRC
conflict free)
✓
REACH (compliant)
✓
RoHS (compliant)
Wire Sizes Availability
Cat No.
4925
4926
Std. Wire
Gauge
21
19
Diameter
0.81 mm
1.02 mm
0.032 in
0.040 in
Packaging
Spool
Spool
Sizes
¼ or 1 lb
¼ or 1 lb
General Flux Parameters
Properties
Residue Removal
Flux Percentage
Flux Feature
Shelf Life
Value
Not required
2.2%
Fast wetting, fast flowing, non-conductive
5y
Continued on the next page
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Date: 31 August 2017 / Ver. 2.00
SAC305 RA Solder Wire
4925–4926 Technical Data Sheet
ISO 9001:2008 Registered Quality System. Burlington, Ontario, CANADA
SAI Global File: 004008
4925–4926
Flux Core Properties
The rosin activated flux wets rapidly and is fast flowing. It is also non-conductive and non-corrosive.
Physical Properties
Flux Classification
Flux Type
%Halides
Color
Softening Point of Flux Extract
Acid Number (mgKOH/g sample)
Silver Chromate—Chlorides + Bromides
Surface Insulation Resistance (SIR)
Corrosion Test
Cleaning Requirements
Method
J-STD-004B
MIL-F-14256F
—
IPC-TM-650
IPC-TM-650
IPC-TM-650
IPC-TM-650
—
2.3.13
2.3.33
2.6.3.3
2.6.15
Value
ROM1
RA
Rosin
0.5–2.0%
Amber solid
80 °C [176 °F]
150–160
Detection
>1.0 × 10
9
Ω
Non-corrosive
Application dependent
a)
a) Since there is only 2.2% flux, removal of residue can be considered optional for some applications.
SAC305 Alloy Typical Literature Properties
Physical Properties
Color
Density @26 °C [78 °F]
Tensile Strength
Tensile Yield
Elongation
Shear Strength @20 °C and 0.1 mm/min
Shear Strength
@100 °C and 0.1 mm/min
Creep Strength @20 °C and 0.1 mm/min
Shear Strength
@100 °C and 0.1 mm/min
Hardness
Electric Properties
Volume Resistivity
Electrical Conductivity
Value
a)
Silvery-white metal
7.49 g/cm
3
29.7 N/mm
2
[4 310 lb/in
2
]
25.7 N/mm
2
[3 720 lb/in
2
]
27%
27 N/mm
2
[3 900 lb/in
2
]
17 N/mm
2
[2 500 lb/in
2
]
13 N/mm
2
[1 900 lb/in
2
]
5.0 N/mm
2
[730 lb/in
2
]
15 HB
Value
13
Ωcm
16.6% IACS
b)
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Date: 31 August 2017 / Ver. 2.00
SAC305 RA Solder Wire
4925–4926 Technical Data Sheet
ISO 9001:2008 Registered Quality System. Burlington, Ontario, CANADA
SAI Global File: 004008
4925–4926
Continued…
Thermal Properties
Melting Point, Solidus
Melting Point, Liquidus
Tip Temperature Upper Limit
Coefficient of Thermal Expansion (CTE)
Thermal Conductivity
Value
217 °C [423 °F]
221 °C [430 °F]
Do not exceed 350 °C [662 °F]
23.5 ppm/°C
58.7 W/(m·K)
c)
NOTE:
This table present typical literature values for SAC305 alloys.
a) N/mm
2
= mPa; lb/in
2
= psi;
b) International Annealed Copper Standard: 100% give 5.8 × 10
7
S/m.
c) CTE unit conversions: ppm/°C =
m/(mK)
= in/in/°C × 10
-6
= unit/unit/°C × 10
-6
Solder Alloy Composition
Properties
MAIN INGREDIENTS
Sn
Ag
Cu
Value
96.2 to 96.8%
02.8
to 3.2%
00.4
to 0.6%
Properties
IMPURITIES
a)
Sb
Bi
In
Pb
Au
As
Fe
Ni
Al
Zn
Cd
J-STD-006C
REQUIREMENTS
≤0.20%
Max
≤0.10% Max
≤0.10% Max
≤0.07% Max
≤0.05% Max
≤0.03% Max
≤0.02% Max
≤0.01% Max
≤0.005% Max
≤0.003% Max
≤0.002% Max
4925–4926
SPECIFICATIONS
≤0.05% Max
≤0.05% Max
≤0.05% Max
≤0.05% Max
≤0.002% Max
≤0.01% Max
≤0.01% Max
≤0.005% Max
≤0.001% Max
≤0.001% Max
≤0.001% Max
a) Exceeds the requirements of J-STD-006C and meets ASTM B 32.
Storage
Protect from direct heat or sunlight. Store between 18 to 27 °C [65 to 80 °F].
Cleaning
The flux residue does not need to be removed for typical applications. If removal is desired, a solvent
system like the
MG 4140
can be used. For best results, warm the cleaning solution to about
40 °C [104 °F].
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SAC305 RA Solder Wire
4925–4926 Technical Data Sheet
ISO 9001:2008 Registered Quality System. Burlington, Ontario, CANADA
SAI Global File: 004008
4925–4926
Health and Safety
Please see the 4925x (where x = 5, 6)
Safety Data Sheet
(SDS) for more details on transportation,
storage, handling and other security guidelines.
Health and Safety:
Avoid breathing fumes. Wash hands thoroughly after use. Do not ingest.
HMIS® RATING
HEALTH:
FLAMMABILITY:
PHYSICAL HAZARD:
PERSONAL PROTECTION:
NFPA® 704 CODES
*
1
0
0
0
1
1
0
Approximate HMIS and NFPA Risk Ratings Legend:
0 (Low or none); 1 (Slight); 2 (Moderate); 3 (Serious); 4 (Severe)
Packaging and Supporting Products
Cat. No.
4925-112G
4925-454G
4926-112G
4926-454G
Form
Solid wire
Solid wire
Solid wire
Solid wire
Package
Spool
Spool
Spool
Spool
Net
113
454
113
454
Weight
g
g
g
g
0.25 lb
1.0 lb
0.25 lb
1.0 lb
a) Box of 25 pocket packs
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Date: 31 August 2017 / Ver. 2.00
SAC305 RA Solder Wire
4925–4926 Technical Data Sheet
ISO 9001:2008 Registered Quality System. Burlington, Ontario, CANADA
SAI Global File: 004008
4925–4926
Technical Support
Contact us regarding any questions, improvement suggestions, or problems with this product. Application
notes, instructions, and FAQs are located at
www.mgchemicals.com.
Email:
support@mgchemicals.com
Phone: +(1) 800-340-0772
+(1) 905-331-1396
+(44) 1663 362888
Fax: +(1) 905-331-2862
Mailing address:
(Canada, Mexico & USA)
(International)
(UK & Europe)
or +(1) 800-340-0773
Head Office
9347–193rd Street
Surrey, British Columbia, Canada
V4N 4E7
Manufacturing & Support
1210 Corporate Drive
Burlington, Ontario, Canada
L7L 5R6
Warranty
M.G. Chemicals Ltd.
warranties this product for 12 months from the date of purchase by the end user.
M.G. Chemicals Ltd.
makes no claims as to shelf life of this product for the warranty. The liability of
M.G.
Chemicals Ltd.
whether based on its warranty, contracts, or otherwise shall in no case include incidental or
consequential damage.
Disclaimer
This information is believed to be accurate. It is intended for professional end users having the skills to
evaluate and use the data properly.
M.G. Chemicals Ltd.
does not guarantee the accuracy of the data and
assumes no liability in connection with damages incurred while using it.
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