
RTI's Microelectronic Hybrids
Medical thick film microelectronic hybrids
and ic design
For over 12 years, Resistance Technology has ranked as a world producer of medical
microelectronic hybrids used in the hearing health care industry. RTI designs
custom-integrated circuits and microelectronic hybrid assemblies. We combine thick film
hybrid technology with flexible circuits and electro-mechanical components to meet various
sizing and cost constraints, fabricating over 700,000 hybrids each year.
Turn-key design engineering support
RTI's Product Team provides support for your custom hybrid circuit needs:
- Custom in-house ASIC design and IC foundry support of bi-polar
integrated circuits.
- Computer-Aided Design (CAD) tools optimizing hybrid package
design for a full line of amplifiers for Behind-The-Ear (BTE's) to Completely-in-the-Canal
(CIC's).
- System solutions approach to support your hearing instrument
hybrid needs: rapid design and prototyping, parametric optimization, testing, and
high-volume fabrication.
Thick film hybrid technology
RTI has precision capabilities for sub-miniature applications when size and volume
constraints are critical to your electronic design package.

RTI Thick Film Hybrid Manufacturing
Competencies
- Flip chip-on-ceramic or printed circuit board, chip-on-chip,
chip-on-flex
- Multilayer high-density double-sided ceramic substrates
- Photon CO2 laser for precision ceramic
substrate processing of vias, through-holes and custom shapes
- Ag, PdAg, Au, PtAg, PtPdAu, and Cu metallization and Presco
screen printers
- 5 mil lines (12.5 microns) and spaces (10 mil pitch (250
microns))
- Routing densities ranging from 80 lines/inch/layer to 100
lines/inch/layer
- Gold or solder bumped flip chip
- Laurier semi-automatic die bonders
- Fine-pitch gold wire bonding from .010-inch to .020-inch
pitch, using Hughes 2460 automatic wirebonders
- Automatic Pick and Place using the Phillips CM84V2
- Radiant Technology's IR/convection reflow oven with nitrogen
atmosphere
- ESI Model 44 laser trim systems (both active and passive
trimming)
- Printed resistors ranging from 1 ohm to 10 megohms +/-5%, 1%
- USA 100 watt YAG laser for substrate shaping and part
identification
- Printed thick film capacitors: 500 nF/in2 +/-15%
- K & S dicing saws for precise hybrid sizing
- Teledyne automatic probe testers and HP/Tektronix test
equipment
- Wire/lead tinning and semi-automatic lead placement machines
- Aqueous cleaning system
- Multichip on double-sided ceramic or flexible polyimide
circuitry
Facilities
RTI's Red Fox Road facility has over50,000 square feet. This facility houses engineering,
manufacturing and support offices, and a Class 10,000 temperature and humidity-controlled
clean room.
Contact Customer Service at 1-877-651-1636 (toll free)