Yokowo Co., Ltd.

Domain & Products

Advanced Devices:LTCC Applied Devices

Developing new solutions harnessing LTCC and RF technology.
Yokowo's LTCC substrates and packages, sold the world over.

With the Low Temperature Co-fired Ceramics (LTCC) at the core, Yokowo offers LTCC substrates to enable high-density wiring, compatible with compact, low-back and RF devices.

High-performance LTCC Substrate

LTCC Design Guideline

LTCC: Ceramic Substrate

Wafer-level Chip Size Package Substrate (Self-developed material)Wafer-level Chip Size Package Substrate (Self-developed material)

Substrates for use in the wafer level CSP sector increasingly require high-density, high-precision pattern formation and flatness. It is necessary to increase the size of substrates in the field of semiconductor testing equipment, while high heat release, high brightness and high durability are required in the field of LED packages. Yokowo harnesses cuttingedge LTCC processing technology and 3D RF design technology to offer its customers products that meet their needs with precision.

3-D RF Design

3-D RF DesignUsing a circuit and electromagnetic field simulator, Ansoft Designer and HFSS, Yokowo provides circuit design and three-dimensional RF design for antennas, filters, RF module substrates and others.

Interposer Substrate for Semiconductor Wafer Test

An LSI semiconductor wafer can have thousands of densely aligned bonding pads. LSI testing cannot be performed without a prober for physically expanding the narrow pitch pads of the semiconductor to connect them to the tester.

Based on its advanced LTCC processing technology, Yokowo has successfully developed an interposer substrate that plays a central role in the prober. Together with its vertical micro precision probe, Yokowo will respond to sophisticated demand from the semiconductor wafer sector.

12 inch Interposer Substrate for Memory
(Internal Power Supply & Ground)
  • Internal Wiring is AvailableInternal Wiring is Available
  • LTCC Interposer SubstrateLTCC Interposer Substrate
  • Enlarged DUT PatternEnlarged DUT Pattern
Interposer Substrate for Logic
(Multi Pin & Dut)
  • Interposer Substrate for Logic
  • Radiograph of Stacked Via Holes (50 Layers, Via Dia. : 50µm)Radiograph of Stacked Via Holes(50 Layers, Via Dia. : 50µm)
  • Fine Pitch Pad Area Min. Pad Pitch : Around 120µmFine Pitch Pad AreaMin. Pad Pitch : Around 120µm

LTCC Applied Devices

LTCC Substrate for RF
LTCC Substrate for RF
Dielectric Material for high frequency wave (εγ:50)
Self-developed material: YDM-500 (US PAT No.7781359)
Substrate for RF Module
Substrate for RF Module
Dimensions of product: 3.3×5.1×0.5mm
Printed Resistor: 1Ω~10MΩ
LTCC Substrate Mounting High Frequency IC
LTCC Substrate Mounting High Frequency IC
Mounting high frequency device
Wafer-level Chip Package Substrate
Wafer-level Chip Package Substrate
Dielectric Material for high frequency wave (εγ:20)
Self-developed material: YDM-200
LED LTCC Substrate
LED LTCC Substrate
High reflectance material
High heat dissipation
Excellent mountability due to its superior flatness
LED Substrate for Vehicle
LED Substrate for Vehicle
Mounting high brightness LED
LED Super-thin LTCC for CSP Substrate
LED Super-thin LTCC for CSP Substrate
Thickness : 0.075~0.150mm
Backlight LED Multiple LTCC Package
Backlight LED Multiple LTCC Package
LTCC Integral Structure
The light that is more uniform than a package type

Other LTCC Product

High Brightness/Ultraminiature LED RING LIGHT of LTCC

A compact size, high brightness, and extreme durability are requirements for the light sources of small CCD cameras. Yokowo has commercialized a High Brightness/Ultraminiature LED RING LIGHT of LTCC that fulfills these needs.

This product comes with multiple LED devices, is an ultraminiature size, and can be positioned directly under a small CCD camera without an optical fiber cable, and can secure a sufficient amount of light.
In addition, by adopting the heat resistant LTCC circuit board manufactured by Yokowo with its special silicon resin seal, this product has extreme durability.

Applications for use: dental instruments, industrial/medical endoscopes, microscopes, etc.

Emitting State
Scale=0.5mm

Yokowo Advanced Device Center

Yokowo Advanced Device CenterThe Yokowo Advanced Device Center was set up in Tomioka, Gumma Prefecture as a base for the mass production of LTCC products and for developing and prototyping advanced LTCC technologies. With LTCC material development and process technology development, it offers advanced LTCC products and an excellent technical environment.