STS-216A

STS-216A is an epoxy conductive adhesive with silver powder as the medium. It has the characteristics of high adhesive strength, high reliability, good thermal conductivity, high thixotropy, and excellent rheological properties. Suitable for high-speed dispensing, there will be no dragging or wire drawing during the dispensing process.

Classification:

Conductive silver adhesive

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Product Description

Product Overview	STS-216A is an epoxy conductive adhesive with silver powder as the medium. It has the characteristics of high adhesive strength, high reliability, good thermal conductivity, high thixotropy, and excellent rheological properties. Suitable for high-speed dispensing without tailing or stringing during dispensing.
Main applications:	High-speed dispensing equipment for die attach processes
Technical Indicators	Pre-cure performance
	Project (Unit)	Test Method/Condition	data
	Type of filler		silver
	Thixotropy index	0.5 rpm / 5 rpm	6.3
	Viscosity (CP)	Brookfield CP52，5 rpm,25 °C	13000
	Working hours	25% increase in viscosity at 25 °C	24
	Validity period (year)	-40 °C or less	1
Curing conditions and curing process	Curing conditions are recommended
Curing conditions and curing process	3-5°C/min ramp up to 175°C + constant temperature for 1 hour (gradual ramp up reduces bubble generation and increases bond strength)
Post-cure performance
	Project (Unit)	Test Criteria/Conditions	data
	Volume resistivity ( Ω·cm )	4-point probe method	4*10^-5
	Wafer shear strength (kgf/die) 2 mm x 2 mm silicon wafer Ag/Cu	25 °C	16
	Thermal conductivity ( W/(m·K) )	Laser flash method 121 °C	5.5
	Tg (°C)	DSC (10 °C/min)	140
	Thermal expansion below Tg (ppm/°C)	TMA expansion probe	56
	Thermal expansion system above Tg (ppm/°C)	TMA expansion probe	160
Storage and transportation	The product is stored in an environment below -40°C, and the expiration date of the product can be guaranteed under the required storage conditions. Improper storage methods can adversely affect the performance of the product.
transport	During transportation, the product should be stored in a thousand ice to ensure that the product is kept below 40°C
thaw	Thaw the product to room temperature before use, place the syringe vertically during thawing, and do not open the container until the product is thawed to room temperature. When using the product, remove the condensation on the surface of the container before opening the container. For the thawing time, please refer to the product thawing temperature-time curve, and see the product thawing temperature-time curve for details
Suggestions for use	The product should be placed on the dispenser immediately after thawing. If the product needs to be transferred, it is important not to introduce impurities and air during the transfer process. The product must be used during the recommended working hours. It is not recommended to refreeze the product.
Packing specifications	The company's products can be loaded in needles or large-mouth bottles according to customer requirements. Pack sizes include 10g, 18g, 454g. For more information, please contact your local customer service representative.

Product thawing temperature-time curve

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disclaimer

The information provided in this Technical Data Sheet (TDS) includes recommendations for the use of the product and recommendations for its application, which are based on product knowledge and experience as of the date of this TDS. The product can be used in a variety of different applications, as well as in different working environments and processes that are beyond our control, as well as different applications and operating conditions beyond our control. Therefore, we do not accept any responsibility for the suitability of the product for your production process and conditions and for its intended use. We recommend that you conduct pre-production testing according to your own operating methods and process conditions to ensure the suitability of our products. We are not responsible for the information in this Technical Data Sheet (TDS) or any other written or oral advice regarding the relevant product.

Key words:

UV adhesive | Conductive silver adhesive