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TDK SESUB Bluetooth Module

3 490 €

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Yole TDK SESUB Bluetooth Module flyer couv

Latest Release of TDK Embedded Die Package Technology

Although the embedded die market is still in an early phase, by 2021 its revenues will reach $50 million. It will have a compound annual growth rate for consumer applications in the range of 45% according to Yole Développement.

Against this backdrop, TDK has released the world's smallest Bluetooth 4.1 low energy (LE) module, the SESUB-PAN-D14580. With dimensions of 3.5mm x 3.5mm, it offers a footprint reduction of 60% compared to modules with discrete components. Thanks to its miniature size, light weight and low power consumption, the module is ideal for use in battery-powered wearable devices.


Yole TDK SESUB Bluetooth Module Embedded active component System Plus Consulting


The module is packaged with TDK's SESUB (semiconductor embedded in substrate) technology. It embeds a Dialog Semiconductor DA14580 Bluetooth chip into a 4-layer printed circuit board substrate and features an integrated DC-DC converter. This technology extends the package size beyond the integrated circuit surface area and allows additional passive components to be mounted on top of the laminated module.

SESUB is a Chip-First Face-Up process. Initially, all the packaging steps were realized internally at the panel-scale level by TDK, but more recently it announced a joint venture with ASE to support Embedded Die SESUB technology. With this packaging approach, TDK considerably changed the conventional supply chain model, where the chip maker sells directly to the system maker. Here the module maker takes a larger role by adding considerable value.

Yole TDK SESUB Bluetooth Module Embedded die package technology System Plus Consulting

The report includes an in-depth physical analysis of the Bluetooth module, and a complete description of the manufacturing process flow. For the first time, the cost estimation of the module has been realized in partnership with SavanSys Solutions to provide even more detail.

Also, we compare TDK’s SESUB with AT&S’ Embedded Component Packaging (ECP) to understand the technology choices made by each company.


Yole TDK SESUB Bluetooth Module Embedded die package System Plus Consulting


Table of contents

Overview / Introduction



Company profile

> Embedded Die Market
> TDK Company Profile
> SESUB Presentation, Supply Chain and Roadmap
> SESUB Production Location and Capacity



Physical Analysis

> Physical Analysis Methodology
> Module
- Module views and dimensions
- Module opening
- Module delayering

> IC Die
- View, dimensions and markings
- Delayering and main block identification
- Process
- Cross-section

> Module Cross-Section
- Complete PCB
- Vias
- Die edges
- Copper reveal



































Manufacturing Process Flow

> IC Process and IC Fab Unit Description
> SESUB Process Flow
> SESUB Fab Unit Description
> Module Assembly Process
> Module Assembly Unit Description



Cost Analysis

> Yield Explanations and Hypotheses
> IC Die
- IC front-end and wafer cost
- IC die cost and price

> SESUB Packaging
- SESUB panel cost
- SESUB panel cost by process step
- SESUB cost per module

> Module
- Passives components cost
- Final assembly cost 
- Final assembly cost per process step and per module
- Module cost



Estimated Price Analysis



About the authors


System Plus Consulting specializes in the cost analysis of electronics, from semiconductor devices to electronic systems.


Created more than 20 years ago, System Plus Consulting has developed a complete range of services, costing tools and reports to deliver in-depth production cost studies and estimate the objective selling price of a product.


System Plus Consulting engineers are experts in:

  • Integrated Circuits 
  • Power Devices & Modules 
  • MEMS & Sensors
  • Photonics 
  • LED 
  • Imaging 
  • Display 
  • Packaging 
  • Electronic Boards & Systems.

Through hundreds of analyses performed each year, System Plus Consulting offers deep added-value reports to help its customers understand their production processes and determine production costs. Based on System Plus Consulting’s results, manufacturers are able to compare their production costs to those of competitors.

System Plus Consulting is a sister company of Yole Développement.


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  • Detailed photos and cross-sections

  • Precise measurements

  • Material analysis
  • Manufacturing process flow

  • Supply chain evaluation

  • Manufacturing cost analysis

  • Estimated sales price

  • Comparison with AT&S Embedded Component Technology (ECP)