3611B-09 Patch SMT red glue is a one-component,high-temperature, fast-curing epoxy adhesive. It is used for bonding SMD components on printed circuit boards.Safe to use and meet environmental requirements.

 

I. Material characteristics before curing
Item	Parameter	Test method
Colour	Red	Visually
Yield value (25 ° C, Pa)	620	***
Specific gravity (25 ° C, g / cm3)	1.36 ± 0.2	***
Viscosity (25 ° C, cps)	550,000 ± 10%	***
Thixotropic index	6.5 ~ 7.5	***
Flash point (TCC)	> 95 ℃	***
Particle size	<15um	***
Copper mirror corrosion	No corrosion	Visually

1. The 3611B-09 stored in the store needs to be warmed before use. Under the environment of 25 ° C, the normal temperature of 30ml is 2-4 hours, and the temperature of 200-300ml is 4-6 hours.
Precautions:
(1) To avoid contamination of unused glue, do not return any glue to the original packaging.
(2) Glue solution is barely placed in the air, it will absorb trace moisture and affect performance, so it should be avoided as much as possible. When printing on stencils, please do not leave the printed circuit board in the air for too long. It should be cured as soon as possible. If necessary, the humidity of the air should be controlled.
(3) If in a non-standard conventional environment: 25 ° C, please completely thaw according to the specific environment. Do not quickly thaw the glue by heating.

  

The saved curing curve is shown below：

The suitable curing conditions are generally heating at 150 ° C for 90-120 seconds. The relationship between curing speed and final bonding strength and curing temperature and time is shown below.：

In the actual production process, the entire heating time is longer than the figure, because there is a preheating time.

Item	Parameter	Test method
Density (25°C, g / cm3)	1.36±0.1	Visually
Coefficient of thermal expansion (um / m / ℃)	a1 :  < Tg 50	ASTM E831-86
Thermal conductivity W.M-1.K-1	a2 :  > Tg 160	ASTM C177
Specific heat KJ.Kg-1.K-1	0.25	***
Glass transition temperature (℃)	105-110	***
Dielectric constant	112	***
Dielectric tangent	3.8（100KHz）	***
Volume resistivity	2.1*1015Ω.CM	ASTM D257
Surface resistivity	2.1*1015Ω. CM	ASTM D257
Electrochemical corrosion	AN-1.2	DIN 53489
Shear strength (spraying low carbon steel sheet) N / mm	26	ASTMD1002
Pull-out strength N (C-1206, FR4 bare circuit board)	63
Torque strength N.mm (C-1206, FR4 bare circuit board)	51