Custom DB44 Cable
- 44-position high-density D-sub interface in three rows
- Male-to-male, male-to-female, and female-to-female molded cables
- Male or female DB44 breakout versions with identified loose ends
- DB44-to-4×DB9 passive branch harness for a host-specific map
- Custom cable and branch lengths, labels, hood, shield, and retention
- Straight-through, grouped, or fully custom wiring
- Continuity, shorts, branch identity, and reserved-contact verification
Custom DB44 Cable Assemblies for Dense Industrial I/O
A DB44 cable—often called an HD44 cable—places 44 contacts in a compact, three-row high-density D-sub interface. It is used in motion control, data acquisition, test equipment, and industrial I/O where a standard 25-position shell does not provide enough circuits.
The connector does not assign a protocol. A DB44 interface may carry encoder pairs, analog channels, discrete I/O, serial channels, grounds, or auxiliary power. BespokeCable supplies molded DB44-to-DB44 cables, labeled open-end breakouts, and a DB44-to-4×DB9 fan-out. Build every assembly from a released pin and branch schedule.
Where the equipment interface is still being designed, the D-Sub cable collection provides other contact-count options for comparison.
DB44 Cable Specifications
| Parameter | Available Choices | Confirmation Needed |
| Connector | 44-position high-density D-sub | Plug/receptacle and mating drawing |
| Second end | DB44, labeled leads, or 4 × DB9 | Exact arrangement and genders |
| Wiring | 1:1, grouped, or custom | Complete connection and branch table |
| Conductors | Selected for circuit schedule | Signal groups, current, pairs, returns |
| Shield | Project-defined foil, braid, or combined | Bond at shell, drain, one end, or both |
| Hood | Molded on current DB44 card family | Panel clearance and cable exit |
| Length | Custom | Overall and branch datums/tolerances |
| Identification | End, branch, and conductor labels | Text, sequence, color, placement |
| Verification | Continuity and short test | Pair, resistance, or report requirements |
The approved quotation and drawing define final materials, dimensions, electrical limits, and compliance requirements.
Click here to find more information about: What is a DB44 Cable?
1# Molded DB44 Cables
P/N: BC-CBD010-MM
Male-to-male molded HD44 assembly for two female interfaces. Confirm whether all 44 contacts follow a 1:1 or device-specific schedule.
P/N: BC-CBD010-MF
Male-to-female molded DB44 cable for a documented equipment link or extension, with custom length and labeling available.
P/N: BC-CBD010-FF
Female-to-female molded HD44 assembly for two male ports. Gender does not define signal direction, crossover, or protocol.
2# DB44 Breakout Cables
P/N: BC-CBD0101-MT
Male DB44 fan-out with identified loose conductors for terminal blocks, servo I/O, test fixtures, or custom field termination.
P/N: BC-CBD010-FT
Female DB44 to open conductors. Define wire IDs, strip or terminal finish, fan length, shield treatment, and drawing orientation.
3# DB44 to DB9 Fan-Out
P/N: BC-CBD010-M4M
Passive DB44-to-4×DB9 harness for a controller with a documented four-branch map. It distributes host circuits and does not create or convert ports.
Confirm the High Density 44 Position Geometry
DB44 is a high-density 44-position D-sub, also described as HD44 or DB-44. Its three-row contact layout must match the equipment port. It is not simply a standard-density cable with additional wires.
Confirm the mating connector, gender, and panel envelope from a drawing or a clear front view. For a recessed port, check hood width and depth as well as shell fit. Closely spaced equipment connectors can leave little room to operate the fastening screws once the cable is installed.
Fit the Wire Bundle to the Hood
Forty-four contacts create a crowded termination area. Conductor gauge, insulation diameter, and any screens all affect whether the selected bundle can enter and be supported by the hood. Choosing a larger conductor everywhere is not automatically a better design.
Provide the electrical duties and termination requirements so the cable construction can be reviewed as a whole. The approved component ratings govern any current or voltage limits. Do not infer a power-carrying capability from the number of contacts or from a generic “industrial cable” description.
Control the Open End or DB9 Branches
The range includes bare-wire versions and a four-DB9 fan-out as alternatives to a DB44-to-DB44 lead. For an open end, define wire identities and termination dimensions. For a fan-out, define the function, pin map, and length of each DB9 branch.
A passive fan-out exposes circuits already present at the main connector; it does not create four active serial interfaces. This distinction matters when a multi-axis controller or acquisition unit uses the branches for proprietary signals rather than a conventional serial-port assignment.
Specify Environmental Needs for the Supplied Build
Motion-control and test installations may expose cables to noise, vibration, or repeated handling, but those conditions vary widely. State the actual requirement instead of relying on a broad application label. A fixed control-cabinet lead and a moving-machine harness should not inherit the same assumptions.
Review shielding, shell bonding, and strain relief against the installation. Confirm any flame, temperature, flex-life, or regulatory requirements for the proposed materials and assembly. A jacket photograph or an unrelated component certificate does not prove the finished cable meets that requirement.
Send equipment models, connector drawings, genders, full pin and circuit table, pair/ground/shield groups, cable and branch lengths, quantity, labels, terminal details, and required inspection documents.
Often, yes, with a verified drawing or known-good sample. State the equipment and revision, and identify any sample fault that should not be copied.
Yes. Provide the terminal part number or dimensional requirements, strip length, crimp standard, label scheme, and fan-out length.
Request each build as a separate order line with its quantity and drawing reference. Packing identification can then distinguish a finished cable from a harness awaiting field termination.
Related Products
Bringing a Dense DB44 Interface Into a Production Drawing
Start with the equipment schematic
List each used contact with its signal name, destination, and any associated return. Separate the interface designer’s requirements from convenient assumptions about a generic D-sub cable. Include reserved positions so they do not become accidental spare connections during production.
For a four-branch harness, give every destination connector a unique reference. This makes the drawing readable as a circuit schedule rather than four nearly identical pictures.
Review a physical sample before fixing the assembly method
Ask the pilot to demonstrate details a wiring table can’t capture: hood clearance, cable support, breakout access, and the practical installation sequence. Confirm that wires can reach their destinations without pulling the main connector out of alignment.
If a construction change is needed to fit the bundle, review its electrical consequences before acceptance. A smaller overall diameter is not a complete solution if it changes a required conductor or shielding arrangement.
Release the inspection scope with the design
Define which checks establish correct assembly and which depend on your machine or test system. A complete continuity record supports the first question. Application performance, including sensitive measurements or controller behavior, needs a representative system test.
Keep the accepted sample identity and drawing revision together. On later orders, review proposed component substitutions against that baseline rather than approving them solely because the replacement connector still has 44 contacts.
