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Sn96,5Ag3Cu0,5 (SAC305)

EMS soft solder for electronics (ISO 9453 Leg. No. 711)

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What is SAC305 solder?

SAC305 is a standard soft solder for the EMS sector, consisting of tin, silver and copper. This soft solder is one of the most commonly used materials in PCB assembly and cable manufacturing.

What alloy is SAC305?

SAC305 is one of the most widely used lead-free solder alloys in the electronics industry. The designation stands for the alloying elements tin, silver and copper, with the number 305 describing the proportion of 3.0% silver and 0.5% copper. The remaining main component is tin at 96.5%.

With a melting range of approximately 217–220 °C, SAC305 is lower than many other lead-free alternatives and enables reliable soldering processes while maintaining good component compatibility. In addition, the solder is highly resistant to thermal fatigue and retains its bonding quality even after repeated temperature changes.

Delivery forms for SAC305 solder:

  • Ingots with and without suspension

  • Rods type 3K & 4K

  • Solid and flux-filled wires

  • Pellets

  • Sticks®

Other formats or products not listed here may be possible upon request.

Applications

The balanced composition gives SAC305 excellent wetting properties and ensures reliable, homogeneous solder joints. The silver content increases mechanical strength and supports efficient heat dissipation, making the alloy particularly suitable for demanding electronic applications.

  • Wave and selective soldering systems

  • Iron soldering systems

  • Laser soldering systems

  • Plasma and evaporation systems

  • Hand soldering

  • Dip tinning

Products

Solder wire with flux made from Sn96,5Ag3Cu0,5 (SAC305)

Coil type Diameter Weight
- 0.7 mm 500 g

9531

0.7 mm

500 g

EO-FC-006

2.2

yes

3

- 1 mm 500 g

9503

1 mm

500 g

EO-FC-010

2.2

no

3

- 0.7 mm 1,000 g

9641

0.7 mm

1,000 g

EO-FC-006

2.2

yes

3

- 0.7 mm 100 g

9640

0.7 mm

100 g

EO-FC-006

2.2

yes

3

- 0.5 mm 1,000 g

9639

0.5 mm

1,000 g

EO-FC-006

2.2

no

3

- 1 mm 1,000 g

9638

1 mm

1,000 g

EO-FC-010

2.2

no

3

- 1 mm 250 g

9637

1 mm

250 g

EO-FC-010

2.2

no

3

- 1 mm 100 g

9636

1 mm

100 g

EO-FC-010

2.2

no

3

- 0.7 mm 100 g

9622

0.7 mm

100 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 0.5 mm 1,000 g

9621

0.5 mm

1,000 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 0.5 mm 500 g

9620

0.5 mm

500 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 0.5 mm 100 g

9619

0.5 mm

100 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 1 mm 100 g

9618

1 mm

100 g

FH-FC-002

2.2

no

3

- 0.7 mm 1,000 g

9617

0.7 mm

1,000 g

FH-FC-002

2.2

no

3

- 0.7 mm 100 g

9616

0.7 mm

100 g

FH-FC-002

2.2

no

3

- 0.5 mm 1,000 g

9615

0.5 mm

1,000 g

FH-FC-002

2.2

no

3

- 0.7 mm 1,000 g

9635

0.7 mm

1,000 g

EO-FC-010

2.2

no

3

- 0.7 mm 500 g

9634

0.7 mm

500 g

EO-FC-010

2.2

no

3

- 0.7 mm 250 g

9633

0.7 mm

250 g

EO-FC-010

2.2

no

3

- 0.7 mm 100 g

9632

0.7 mm

100 g

EO-FC-010

2.2

no

3

- 0.5 mm 1,000 g

9631

0.5 mm

1,000 g

EO-FC-010

2.2

no

3

- 0.5 mm 500 g

9630

0.5 mm

500 g

EO-FC-010

2.2

no

3

- 0.5 mm 250 g

9629

0.5 mm

250 g

EO-FC-010

2.2

no

3

- 0.5 mm 100 g

9628

0.5 mm

100 g

EO-FC-010

2.2

no

3

- 1 mm 1,000 g

9627

1 mm

1,000 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 1 mm 250 g

9626

1 mm

250 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 1 mm 100 g

9625

1 mm

100 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 0.7 mm 1,000 g

9624

0.7 mm

1,000 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 0.7 mm 250 g

9623

0.7 mm

250 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 1 mm 1,000 g

9483

1 mm

1,000 g

EO-FC-006

2.2

yes

3

- 0.7 mm 250 g

9010

0.7 mm

250 g

EO-FC-006

2.2

yes

3

- 0.7 mm 250 g

8946

0.7 mm

250 g

FH-FC-002

2.2

no

3

- 1 mm 500 g

4360

1 mm

500 g

FH-FC-002

2.2

no

3

- 0.5 mm 500 g

2162

0.5 mm

500 g

FH-FC-002

2.2

no

3

- 0.7 mm 500 g

1249

0.7 mm

500 g

FH-FC-002

2.2

no

3

- 0.5 mm 100 g

8156

0.5 mm

100 g

FH-FC-002

2.2

no

3

- 0.5 mm 250 g

8067

0.5 mm

250 g

FH-FC-002

2.2

no

3

- 1 mm 500 g

5875

1 mm

500 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 0.7 mm 500 g

5874

0.7 mm

500 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 0.5 mm 250 g

5873

0.5 mm

250 g

1131 ROL0 (F-SW34/1)

2.2

no

3

- 1 mm 1,000 g

5543

1 mm

1,000 g

FH-FC-002

2.2

no

3

- 0.5 mm 100 g

8886

0.5 mm

100 g

EO-FC-006

2.2

no

3

- 1 mm 500 g

8775

1 mm

500 g

EO-FC-006

2.2

yes

3

- 1 mm 250 g

8772

1 mm

250 g

EO-FC-006

2.2

yes

3

- 0.5 mm 250 g

8768

0.5 mm

250 g

EO-FC-006

2.2

no

3

- 0.5 mm 500 g

8744

0.5 mm

500 g

EO-FC-006

2.2

no

3

- 1 mm 100 g

8706

1 mm

100 g

EO-FC-006

2.2

yes

3

- 1 mm 250 g

8245

1 mm

250 g

FH-FC-002

2.2

no

3

The products shown are only a selection from our product range. Please contact us for your desired configuration of Solder wire with flux from Sn96,5Ag3Cu0,5 (SAC305).

Solid solder wire made from Sn96,5Ag3Cu0,5 (SAC305)

Coil type Diameter Weight
- 0.75 mm 250 g

9440

0.75 mm

250 g

no

- 1.5 mm 500 g

9393

1.5 mm

500 g

no

- 1.5 mm 100 g

9392

1.5 mm

100 g

no

- 1.5 mm 1,000 g

9391

1.5 mm

1,000 g

no

- 0.7 mm 500 g

9390

0.7 mm

500 g

no

- 0.7 mm 250 g

9389

0.7 mm

250 g

no

- 0.7 mm 100 g

9388

0.7 mm

100 g

no

- 0.5 mm 500 g

5089

0.5 mm

500 g

no

- 1.5 mm 250 g

4954

1.5 mm

250 g

no

- 1 mm 1,000 g

3699

1 mm

1,000 g

no

- 1 mm 500 g

3569

1 mm

500 g

no

- 1 mm 100 g

3377

1 mm

100 g

no

- 0.5 mm 100 g

7597

0.5 mm

100 g

no

- 0.5 mm 250 g

8055

0.5 mm

250 g

no

- 1 mm 250 g

7790

1 mm

250 g

no

The products shown are only a selection from our product range. Please contact us for your desired configuration of Solid solder wire from Sn96,5Ag3Cu0,5 (SAC305).

Rods made from Sn96,5Ag3Cu0,5 (SAC305)

Geometry Length Width Height
square cut 400 mm 11 mm 7 mm

9224

pressed

none

without

square cut

Rods

400 mm

11 mm

7 mm

square cut 400 mm 6 mm 4 mm

9223

pressed

none

without

square cut

Rods

400 mm

6 mm

4 mm

triangular 400 mm 10 mm -

9218

pressed

none

without

triangular

Rods

400 mm

10 mm

triangular 400 mm 7 mm -

9217

pressed

none

without

triangular

Rods

400 mm

7 mm

circular 500 mm - -

9212

pressed

none

without

circular

Rods

500 mm

4 mm

circular 500 mm - -

9211

pressed

none

without

circular

Rods

500 mm

3 mm

circular 500 mm - -

9210

pressed

none

without

circular

Rods

500 mm

2 mm

The products shown are only a selection from our product range. Please contact us for your desired configuration of Rods from Sn96,5Ag3Cu0,5 (SAC305).

Pellets made from Sn96,5Ag3Cu0,5 (SAC305)

Geometry Height Diameter
Pellets 6 mm 18 mm

2228

molded

none

without

Pellets

Pellets

6 mm

18 mm

Pellets 12 mm 25 mm

9143

molded

none

without

Pellets

Pellets

12 mm

25 mm

Pellets 10 mm 27 mm

9142

molded

none

without

Pellets

Pellets

10 mm

27 mm

The products shown are only a selection from our product range. Please contact us for your desired configuration of Pellets from Sn96,5Ag3Cu0,5 (SAC305).

Ingots made from Sn96,5Ag3Cu0,5 (SAC305)

Geometry Length Width Height
Ingot Type G 485 mm 50 mm 20 mm

1146

molded

closed

with

Ingot Type G

Ingots

485 mm

50 mm

20 mm

Ingots Type O 485 mm 50 mm 20 mm

3818

molded

open

with

Ingots Type O

Ingots

485 mm

50 mm

20 mm

The products shown are only a selection from our product range. Please contact us for your desired configuration of Ingots from Sn96,5Ag3Cu0,5 (SAC305).

Sticks made from Sn96,5Ag3Cu0,5 (SAC305)

Geometry Length Width Height
square cut 340 mm 30 mm 20 mm

1059

molded

none

without

square cut

Sticks

340 mm

30 mm

20 mm

triangular 400 mm 10 mm 10 mm

1056

molded

none

without

1

triangular

Sticks

400 mm

10 mm

10 mm

The products shown are only a selection from our product range. Please contact us for your desired configuration of Sticks from Sn96,5Ag3Cu0,5 (SAC305).

Small Sticks made from Sn96,5Ag3Cu0,5 (SAC305)

Geometry Length Diameter
Sticks 12 mm 8 mm

2873

pressed

none

without

Sticks

Small Sticks

12 mm

8 mm

The products shown are only a selection from our product range. Please contact us for your desired configuration of Small Sticks from Sn96,5Ag3Cu0,5 (SAC305).

Material properties

Melting temperature °C217-220
Solder wave temperature °C≥ 265
Density g/cm³7,5
Hardness HB15
Tensile strength N/mm²n.s.
Stretching %n.s.
Specific heat of fusion J/gn.s.
Electrical conductivity µΩcm13
Thermal expansion coefficient24 × 10^-6 /°C (25-150°C)

This alloy can be stored for at least 48 months if properly stored in a clean and dry environment. For massive formats, further processing is usually possible after the specified storage period has expired, but should be technically checked and approved in advance.

Chemical composition in accordance with ISO 9453

(Data in percent by weight)

ElementFormularComposition
TinSnResidue
SilverAg2.8-3.2
CopperCu0.3-0.7
AntimonySb< 0.1
BismuthBi< 0.1
IndiumIn< 0.1
LeadPb< 0.07
GoldAu< 0.05
ArsenicAs< 0.03
IronFe< 0.02
NickelNi< 0.01
CadmiumCd< 0.002
AluminiumAl< 0.001
ZincZn< 0.001

The data given in the table are based on the standardization data of ISO 9453 alloy no. 711.

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Head of Sales & Logistics

Contact by e-mailverkauf@feinhuette.deContact by phone+49 3731 295 131
Contact information

According to the Chemicals Prohibition Ordinance (§ 5 ChemVerbotsV), lead-containing substances may only be sold to commercial customers with the appropriate expertise. Sale to private individuals is prohibited by law. We therefore reserve the right to request appropriate proof when placing orders.