Electric conductive adhesive / Ag paste, TK PASTE

Introduction

We are developing uniquely shaped silver powder in the photos below, which is called TK silver powders and silver paste which utilizes them with our original technologies in the world.
The TK PASTE is a conductive adhesive with a variety of characteristics, taking advantage of the unique features of TK silver powder, such as "forming a conductive path with a small amount of silver," "having a light apparent specific gravity," "having a uniform particle size," and "sintering at low temperatures."

New Topics

CN-7122S, non DG and can be transported at room temp, has joined in TK PASTE series!
CN-7122S is a slow drying type of the conventional product [CN-7120].
The drying speed is slower, so work such as positioning after applying paste is more comfortable!

Non DG and Non frozen during delivery
It does not come under UN Dangerous goods and not need to keep frozen while delivery(CN-7122S has to be kept FROZEN after delivery.), transportation cost can be reduced!

Room temperature drying!
CN-7122S can be dried at room temperature without equipment such as a hardening furnace. Drying time is 2 hours at 25℃ and 20 minutes at 40℃.

Flexible!
As the coating film after drying is flexible, the paste does not crack and retains conductivity even when the coating film is bent.

Removable!
Removal of bonded samples is also possible by reheating after drying.

The paste comes in an aluminum tube!
it can be applied easily without getting your hands dirty.

TK PASTE Line-up

Catalogue download

General catalog of conductive adhesive TK PASTE. In addition to the features and merits of TK PASTE,
Low silver, low temperature curing type CR-2800/CR-5200,
Room temperature drying type CN-7120/CN-7122S, and
High reliability type CR-3520/CR-3990 are introduced.

List

Product No CR-2800 CR-5200 CN-7120 CN-7122S CR-3520 CM-4230
Usage Earth
Shield		 SMT
assembly		 Earth
Shield		 Earth
Shield		 Die bonding Die bonding
Resin Epoxy Epoxy Thermoplastic Thermoplastic Epoxy ―
Specific resistivity 6×10-3Ω・cm 2×10-4Ω・cm 5×10-4Ω・cm 5×10-4Ω・cm 4×10-5Ω・cm 5×10-6Ω・cm
Heat transfer ― ― ― ― 20W/m・K 170W/m・K
Curing condition 90℃×60min 100℃×60min 25℃×60min 40℃×60min
(25℃×240min)		 130℃×30min
＋
180℃×60min		 60℃×60min
＋
200℃×60min
Package 10g(5cc)
Syringe		 10g(5cc)
Syringe		 15g
Aluminum tube		 15g
Aluminum tube		 5g(3cc)
Syringe		 ―
Storage Frozen(-10℃ or below)

Low silver content, CR-2800

TK PASTE CR-2800 is a paste with an amazingly low silver content, using acorn-shaped TK silver powder and containing only 50 wt% silver to achieve a specific resistance of 10-3Ω・cm. With a specific gravity of 2.1, it is twice as light as the conventional product (80wt% silver) and can reduce the cost of using silver paste by half.
☆Conforms to China's VOC regulations (GB33372-2020)☆
Usage Binder Specific
resistivity		 Thermal
conductivity		 VIscosity Curing
condition		 Package Storage
Earth
Shield		 Epoxy resin 6x10-3Ω・cm - 30Pa・S 90℃x60min 10g Syringe Frozen
(Under -10℃)

Low temp. curing/Good specific resistivity,　CR-5200

TK Paste CR-5200 is a low temperature, short time curing paste containing low silver, developed for assembly and mountingof weak heat resistant modules or components.
It maintains stable characteristics with little resistance change even after temperature cycling and high temperature/high humidity tests.
☆Conforms to China's VOC regulations (GB33372-2020)☆
Usage Binder Specific
resistivity		 Thermal
conductivity		 VIscosity Curing
condition		 Package Storage
SMT
assembly		 Epoxy 3x10-4Ω・cm - 20Pa・S 100℃x60min 10g Syringe Frozen
(under -10℃)

Room temp. drying,　CN-7120/CN-7122S

TK PASTE CN-7120 is a one-component, room temperature drying paste that does not require heating for curing and is easy to work with.
Ideal for conductive bonding of heat-sensitive electronic components. Easy to handle as it comes in a tube.
NEW!!Slow drying type CN-7122S is also lined up! The slow drying speed improves the workability when positioning after applying paste.
CN-7120
 　
CN-7122S
 　

Quick-drying, CN-7120

Usage Binder Specific
resistivity		 Thermal
conductivity		 VIscosity Curing
condition		 Package Storage
Earth
Shield		 Thermoplastics 5x10-4Ω・cm - 27Pa・S 25℃x60min 15g
Aluminum tube		 Frozen
(under -10℃)

Slow-drying, CN-7122S

Usage Binder Specific
resistivity		 Thermal
conductivity		 VIscosity Curing
condition		 Package Storage
Earth
Shield		 Thermoplastics 5x10-4Ω・cm - 10Pa・S 40℃x60min 15g
Aluminum tube		 Frozen
(under -10℃)

High heat and electric conductive,　CR-3520

TK PASTE CR-3520 is a one-component heat-curing silver paste with high electrical conductivity and heat transfer properties.
It has excellent reliability such as constant temperature and humidity resistance and cold and heat cycle resistance, and is most suitable for lead-free measures for die bonding materials.
> 　
Usage Binder Specific
resistivity		 Thermal
conductivity		 VIscosity Curing
condition		 Package Storage
Die bonding Epoxy 5x10-5Ω・cm 20W/m・K 20Pa・S 130℃x30min
＋
180℃x60min		 5g Syringe Frozen
(under -10℃)

Sintering,　CM-4230

High conductivity and high heat transfer silver paste sintered at low temperature

"TK Paste CM-4230" is a lead-free, high heat-dissipation type die bonding paste.
It can be sintered without pressure under N2 atmosphere.
Sintering at 200°C in air is possible. Densification is also possible by applying pressure during heating!

Usage Binder Specific
resistivity		 Thermal
conductivity		 VIscosity Curing
condition		 Package Storage
Die bonding - 5x10-6Ω・cm 170W/m・K 51Pa・S 60℃×60min
＋
200℃×60min		 - Frozen
(under -10℃)

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