Although they are usually overlooked, connectors are necessary components used in every electronic device to make the device function properly. Thousands of millions of various connectors are in the market for customers to choose from. In our previous article “10 Things to Consider for Connector Selection”, how to select connectors easily has been explained. And in this article, PC/104 connectors will be introduced specifically.
PC/104 Connector Introduction
PC/104 connectors, following the PC/104 industry standard, are a kind of connector that has been widely used for circuit board connections. PC/104 standard is an interface specification developed by Ampro Computers in the late 1980s and standardized in 1992. The name PC/104 refers to “personal computer” and the “104 pins” on the inter-board connector of the industry-standard architecture (ISA).
As the PC/104 standard defines the form factor merely at 90.17 x 95.89 mm (3.550” x 3.775”), it is available for small and thin designs. For embedded applications, PC-compatible circuit boards usually can be stacked together through PC/104 connections to reduce the size of embedded systems as well as the requirement for power supply.
Other than PC/104, the PC/104-Plus standard adds PCI (Peripheral Component Interface) buses on the original PCI/104 form factor to improve the system performance. With more connections between boards, PC/104-Plus is more suitable for higher throughput devices compared to PC/104.
Overall, PC/104 and PC/104-Plus connectors are very common for circuit board designs, such as processors, video controllers, network interfaces, sound I/O, data acquisition boards, specialized interfaces, and others. The below figure shows numerous types of circuit boards where PC/104 can be used.
|Types of Circuit Boards Where PC/104 Can Be Used|
|✔ Prototype boards||✔ Digital I/O|
|✔ CPUs including everything from 8088～Pentium||✔ Analog I/O|
|✔ Video frame grabbers and processors||✔ Sound and speech I/O|
|✔ Coprocessors||✔ Network interfaces|
|✔ DSPs||✔ PCMCIA interfaces|
|✔ AC and battery power supplies||✔ Keyboard and keypad interfaces|
|✔ Most varieties of serial communications||✔ Avionics control system interfaces|
|✔ Motion control||✔ Optical encoder interfaces|
|✔ SSD (Solid state disk)||✔ Touch screen interfaces|
|✔ Modems||✔ Traditional rotating disk storage interfaces (SCSI, IDE, floppy, etc.|
|✔ GPS receivers||✔ Load cell and other specialized sensor interfaces|
|✔ Real time clocks||✔ Field bus interfaces|
|✔ Counter/timers||✔ Adapters to other types of buses|
|✔ LCD and traditional CRT video drivers|
|✔ Relay and solenoid drivers|
These boards can be found in a wide variety of applications, such as factories, laboratories, robots, motor control, traffic control, security monitoring, power monitoring, water pattern monitoring, alarm systems, temperature and humidity control monitoring, entertainment, communications, and so on.
The Most Reliable PC/104 Connectors from Astron
Astron, the leading connector supplier and the approved vendor of Kontron, Foxconn, and Advantech, has provided PC/104 connectors with 2.00- and 2.54-mm pitches at TECHDesign. The PC/104 connectors are all IATF 16949, ISO 9001, ISO 14001, and OHSAS 18001 certified. With more than 30 years of devotion in the connector industry, Astron ensures its PC/104 connectors have high stability, high quality, a complete line-up, reasonable pricing, and sufficient supply.
It is ordinary to see many PC/104 connectors designed in stackthrough form factors for stacking boards with a common bus. Connectors with 64 (32+32) positions are suitable for 8-bit systems, while 40-position (20+20) along with 64-position (32+32) connectors are suitable for 16-bit systems. The best news is that you can find all these PC/104 connectors from Astron at TECHDesign. The essential specifications are listed below as a brief overview.
|Number of Positions||Package||Contact Material||Contact Plating||Termination|
|25-2104H-430-1T-N-R||Female Vertical Throughboard Post Header Receptacle||2||120 (30 x 4)||Tube||Phosphor Bronze||Gold||Solder Pin|
|25-2201-430-1G-N-R||Female Vertical Throughboard Connector||2||120 (30 x 4)||Tube||Phosphor Bronze||Gold||Solder Pin|
|25-2203-430-1G-N-R||Female Vertical Stackthrough Connector||2||120 (30 x 4)||Tube||Phosphor Bronze||Gold||Solder Pin|
|27-2103H-430-1T-N-R||Male Vertical Throughboard Post Header||2||120 (30 x 4)||Tube||Brass||Gold||Solder Pin|
|25-0201H-220-1G-TBN-R||Female DIL Vertical Throughboard Connector||2.54||40 (20+20)||Tube||Phosphor Bronze||Gold||Solder Pin|
|25-0201H-232-1G-TBN-R||Female DIL Vertical Throughboard Connector||2.54||64 (32+32)||Tube||Phosphor Bronze||Gold||Solder Pin|
|25-0206H-220-1G-TBN-R||Female DIL Vertical Stackthrough Connector||2.54||40 (20+20)||Tube||Phosphor Bronze||Gold||Solder Pin|
|25-0206H-232-1G-TBN-R||Female DIL Vertical Stackthrough Connector||2.54||64 (32+32)||Tube||Phosphor Bronze||Gold||Solder Pin|