DELO: New Semicon Adhesive Propels Autonomous Driving Forward
October 20, 2023 | DELOEstimated reading time: 1 minute
DELO has developed a flexible electronics adhesive that permanently seals sensor housings airtight and thus reliably protects components such as image sensors. DELO DUALBOND BS3770 meets the stringent requirements of the semiconductor and automotive industries and helps drive innovation in autonomous driving.
The autonomous driving trend comes with ever-stricter safety requirements. Therefore, reliable components such as image sensors are installed in LiDAR and RADAR systems. Sensor housings on PCBs must be hermetically sealed throughout their entire service life in order to maintain their function permanently without interruption. However, previous solutions for hermetically sealing the housing and filter glass are reaching their limits due to these stricter requirements, failing to withstand the tests of the automotive industry, according to standard AEC-Q100.
DELO has developed DELO DUALBOND BS3770, a special electronics adhesive for semiconductor manufacturers to meet the demanding reliability and qualification tests of automotive suppliers.
Unlike adhesives previously available on the market, the newly developed adhesive is a flexible product with a Young's modulus of less than 5 MPa at room temperature. Due to its flexible properties starting from a temperature as low as approximately -50 °C, the adhesive can compensate for pressure changes that occur, such as those caused by temperature changes, humidity differences, or heat input in the reflow process during production. As a result, defects such as pop-ups or delamination do not occur, and the sensor is permanently protected.
DELO DUALBOND BS3770 can be precisely applied by needle dispensing while maintaining narrow and high bondlines. Curing takes place in two consecutive steps using UV light and heat. After dispensing, the adhesive is fixed in a few seconds by means of classic light fixation. Alternatively, it can be transferred to the B-stage, which is particularly relevant for bonding filter glasses with blackprint. At this stage, it achieves an initial adhesion comparable to tape. Afterwards, the second component can be joined. Thanks to the adhesive’s initial adhesion, the component is directly fixed so that it can be entirely processed further. Final curing takes place in a convection oven at +150 °C within 40 minutes.
In addition to image sensors for LiDAR and RADAR applications, DELO DUALBOND BS3770 is also used in driver monitoring and for 5G applications.
Suggested Items
July 2025 PCB007 Magazine: Sales—From Pitch to PO
07/18/2025 |Though all parts of a company are essential for holistic success, it is a foundational truth that a company lives and dies by its sales. If there are no sales, the company eventually ceases to exist, or as Henry Ford says, “Nothing happens until someone sells something.” In the July issue of PCB007 Magazine, we break down the sales stack and provide a guide to up your sales game.
Knocking Down the Bone Pile: Addressing End-of-life Component Solderability Issues, Part 4
07/16/2025 | Nash Bell -- Column: Knocking Down the Bone PileIn 1983, the Department of Defense identified that over 40% of military electronic system failures in the field were electrical, with approximately 50% attributed to poor solder connections. Investigations revealed that plated finishes, typically nickel or tin, were porous and non-intermetallic.
Scanfil, MB Elettronica to Join Forces
07/14/2025 | ScanfilFinnish Scanfil, the largest European stock exchange listed Electronic Manufacturing Service company in terms of turnover, and Italian MB Elettronica (“MB”) from Cortona Arezzo have agreed to join forces.
OSI Systems Receives $34 Million Contract for Cargo and Vehicle Inspection Systems
07/11/2025 | BUSINESS WIREOSI Systems, Inc. announced that its Security division has been awarded a contract worth approximately $34 million by an international customer.
I-Connect007 Observes U.S. Independence Day Holiday
07/04/2025 | Nolan Johnson, I-Connect007Today marks the 248th anniversary of the signing of the American Declaration of Independence by the Continental Congress. Known widely in the U.S. as Independence Day or “The Fourth of July,” this day also commemorates the declaration by the Congress that the American colonies are free and independent states.