Mini Delta Ribbon (MDR) 68-Pin Breakout Board


BRKAMC68F-R4-DIN
(click image to enlarge)
  • Mini Delta Ribbon connector
  • Screw terminal for each of the 68 lines, plus shield
  • Solder pad connection space for all 68 lines, plus shield
  • Rubber feet or DIN rail mount

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See Also: MDR Cables,   More Breakout Boards,   VHDCI 68-Pin Breakout Board


General Description

Centronics, MDR, VHDCI, HPDSUB  Connector Guide
See our connector identification guide!
This breakout board contains a 68-pin Mini D Ribbon (MDR) Female connector. Each of the 68 connector pins is brought out to screw terminal blocks, allowing connections to be made easily. Each pin is also brought to solder pads (2 per pin) at 0.1" spacing, allowing easy addition of 0.1" pin headers or other components. Please note that the breakout boards are manufactured with a connection between each connector pin and the corresponding terminal block position; no soldering of any type is necessary. The solder pads simply provide an area for making optional connections to additional headers or other components.
The connector used on this product goes by several different names, including Mini D Ribbon, Mini Delta Ribbon, MDR, Mini Centronics, Half-Pitch Centronics, HPCN, HPCN68, Half-Pitch CN, and Micro Centronics. It is also occasionally referred to as a SCSI2 connector, though that is not typically a proper use of the term. Sometimes these 68-pin MDR connectors are called Mini 68 or SCSI-III connectors. However, be aware that there is some confusion in the terms commonly used. The manufacturer and model of the connector on these breakout boards is listed below, making it possible to carefully compare the connector on your application to the connector used on these breakout boards. Contact Winford Engineering for any needed assistance.


These break out boards are perfect for experimentation and prototype work, as well as for use in permanent installations. They are well-suited for interfacing with data acquisition equipment or any other devices that use a Mini D Ribbon connector. A breakout board is sometimes referred to as a "transition module", "terminal board", "terminal block", "breakout box", "breakout adapter", or "interface module".

MDR Connector Details

The Mini Delta Ribbon (MDR) series of connectors provides a compact arrangement of durable sliding 'ribbon' contacts. The high contact density and good performance at high speeds have yielded many applications for this connector type. These are 'half-pitch' connectors, meaning that the contact spacing is tighter than full-size Centronics connectors, such as those used on our BRKDC36F or BRKDC50F breakout boards. The 'half-pitch' connectors utilize contacts on 0.05" centers.

Winford Engineering currently utilizes MDR connectors from 3M™ on these breakout boards; connector details are listed below.

MDR Connector Details
Manufacturer 3M
Mfg. Part # Right Angle: 10268-55H3PC
Threaded Inserts Right Angle: #4-40 thread (See Note)
Latch Blocks Present
Jack Sockets Not Included
Note: Other threaded insert options may be available. Please contact Winford Engineering to discuss any needs you have.

Product Documents

Part # DescriptionPDF DrawingDWG DrawingDocument
BRKAMC68F-R4-DIN68-Pin MDR Female, DIN Mount
BRKAMC68F-R4-FT68-Pin MDR Female, Rubber Feet
Connector GuideWhich connector do I have? Consult this helpful identification guide.
BRKAMC68F-R4-DIN
68-Pin MDR Female, DIN Mount
BRKAMC68F-R4-FT
68-Pin MDR Female, Rubber Feet
Connector Guide
Which connector do I have? Consult this helpful identification guide.

Mounting Options

These products are available in two different mounting variants. Product numbers ending with -DIN come with DIN clips already installed and ready to snap onto 35mm or 32mm DIN rail. Product numbers ending with -FT have stick-on rubber feet installed on the bottom side, allowing for benchtop use or panel mounting. For panel mounting, we suggest 1/4" nylon standoffs under the mounting holes, and #6 screws.
BRKAMC68F-R4-DIN
DIN Rail Mount
BRKAMC68F-R4-DIN
Click image to enlarge.
Rail not included
BRKAMC68F-R4-FT
Rubber Feet
BRKAMC68F-R4-FT
Click image to enlarge.

Cables

Winford Engineering offers 68-pin MDR cables (shown below) which are compatible with these breakout boards.
CBMDR68MB-3
MDR Cable
CBMDR68MB-3 pictured
Click image to enlarge.
MDR Connector
68-Pin MDR Connector
Click image to enlarge.

Applications

This breakout board is general-purpose in nature and useful when interfacing to a variety of equipment. There is some use of this 68-pin MDR connector in the data aquisition and instrumentation fields. This breakout board is designed to work with this type of system to split out I/O signals for connection to other equipment. Examples include the GUNT 'FL 151' Multi-Channel Measuring Amplifier.

Product Details

  • Mini D-Ribbon (Mini Delta Ribbon, MDR, Mini Centronics) 68-pin connector
  • Screw terminal for each of the 68 lines, plus shield
  • Screw terminals accomodate wire sizes from 16AWG to 26AWG
  • Approximate dimensions: 3.84" x 3.5"
  • Rubber feet or DIN rail mount

Need a quality screwdriver for your breakout boards? Winford sells Wiha screwdrivers!

Pricing and Ordering

Product # Description 1+ 10+ RoHS Buy Now
Mini D Ribbon 68-Pin Right Angle Connector:
BRKAMC68F-R4-DIN Mini Centronics/MDR 68-Pin Female Breakout Board, R/A Connector, #4-40, DIN Rail Mount $89.50 $84.50 Yes
BRKAMC68F-R4-FT Mini Centronics/MDR 68-Pin Female Breakout Board, R/A Connector, #4-40, Feet $88.00 $83.00 Yes
Mini D Ribbon 68-Pin Right Angle Connector:
BRKAMC68F-R4-DIN
Mini Centronics/MDR 68-Pin Female Breakout Board, R/A Connector, #4-40, DIN Rail Mount
RoHS: Yes
Buy Now:
QuantityPrice
1+$89.50
10+$84.50
BRKAMC68F-R4-FT
Mini Centronics/MDR 68-Pin Female Breakout Board, R/A Connector, #4-40, Feet
RoHS: Yes
Buy Now:
QuantityPrice
1+$88.00
10+$83.00

All of the above items are normally stocked. Please call us if you need to verify availability for a specific quantity, or for pricing at higher quantities. Please visit our ordering page for our ordering policies and a list of ordering methods.