High Density Rectangular Connector | 64-Pin Reliable HDPC Series

The HDPC Series high density rectangular connector is designed to simplify increasingly complex electrical architectures in harsh-environment vehicles, machinery, and industrial equipment. Its 64-position architecture gives engineers a practical way to consolidate signal and auxiliary low-voltage power circuits that might otherwise require several smaller connector interfaces, helping reduce connector count, simplify harness routing, and make better use of available installation space.

HDPC combines a 64-position bulkhead receptacle with separate 24-position and 40-position cable-side plugs, creating a high-density connection platform for electronic control units (ECUs), vehicle control units, power distribution equipment, and centralized control systems. Central jackscrew locking, rugged thermoplastic construction, a wide operating temperature range, and environmental sealing support dependable operation in construction machinery, off-highway equipment, commercial vehicles, agricultural equipment, marine systems, and other demanding applications.

Table of Contents

• HDPC Series Overview
• At a Glance
• 64-Position Architecture
• Designed for Harsh Environments
• Simplifying Complex Electrical Architectures
• Typical Applications
• HDPC Series Configurations and Part Numbers
• System Integration Considerations
• Resources & Support
• Frequently Asked Questions

HDPC Series High Density Rectangular Connector Overview

Modern construction machinery, commercial vehicles, agricultural equipment, specialty vehicles, and industrial systems continue to incorporate more sensing, communication, control, and auxiliary electrical functions. As circuit counts increase, electronic control units and centralized controllers need connector systems capable of supporting more connections without consuming excessive enclosure or harness space.

Using multiple lower-position connectors can require additional panel space, separate harness branches, more mating operations, and a greater number of individual connection points. The HDPC Series addresses this challenge with a high density rectangular connector platform that consolidates as many as 64 positions into a single equipment-side interface.

The system supports wire-to-board connectivity for highly integrated ECUs, vehicle controllers, power distribution units, control cabinets, and other centralized electronics. Its combination of high circuit density, secure mechanical locking, environmental protection, and compact packaging makes HDPC particularly relevant where installation space is limited and reliable connector performance is critical.

HDPC Series at a Glance

• 64-position high-density equipment-side interface
• 64-pin bulkhead receptacle with 24-pin and 40-pin cable-side plugs
• Central jackscrew locking structure for secure mechanical engagement
• Maximum operating voltage of 250 V
• Published current ratings of 7.5 A and 5 A depending on wire and circuit configuration
• Operating temperature range from -55°C to +125°C
• Rugged thermoplastic housing
• UL94 V-0 flammability classification
• Multiple cable-side keying options
• Designed for high shock and vibration environments
• Meets performance specifications of SAE USCAR-2
• RoHS and REACH compliant
• [PENDING XIAOMEN CONFIRMATION: IP67-IP69K environmental protection in the mated condition]

64-Position Architecture with 24-Pin and 40-Pin Cable-Side Connectors

A defining feature of the HDPC Series is its split cable-side architecture. The equipment-side interface uses a 64-pin bulkhead receptacle, while the cable side is divided between a 24-pin plug and a 40-pin plug. Together, the two cable-side connectors provide access to all 64 positions of the bulkhead interface.

This 24 + 40 arrangement allows harness designers to organize two cable-side connections within one high density rectangular connector interface while maintaining a compact equipment-side footprint. Instead of dedicating several separate panel-mounted connectors to groups of signal and auxiliary circuits, engineers can route those circuits through a compact 64-position system.

The 24-position and 40-position cable plugs are available with multiple keying configurations, including Keys A, B, C, and D. These keying options can help distinguish connector configurations and support correct mating when multiple harness connections are used within the same vehicle or equipment platform.

For PCB-based electronic systems, the bulkhead configuration provides an interface between an external wiring harness and electronics contained inside an ECU, vehicle controller, PDU, or sealed control enclosure. This architecture makes the HDPC Series particularly useful where a large number of circuits must enter a compact electronic module through limited available panel space.

Harsh-Environment High Density Rectangular Connector

High circuit density alone is not enough for equipment exposed to vibration, moisture, contamination, and extreme temperatures. The HDPC Series combines its compact 64-position architecture with mechanical and environmental characteristics intended for demanding mobile and industrial applications.

A central jackscrew locking structure provides positive mechanical engagement between the mating connector components. This design is intended to help resist loosening in applications subject to continuous vibration, making the HDPC Series well suited for construction machinery, heavy-duty commercial vehicles, agricultural equipment, mining equipment, and other demanding mobile platforms.

The connector operates across a documented temperature range of -55°C to +125°C and uses a rugged thermoplastic housing with a UL94 V-0 flammability classification.

[PENDING XIAOMEN CONFIRMATION: Replace with approved IP wording. Proposed wording: “IP67-IP69K protection in the mated condition.”]

Ingress-protection classifications are defined by the IEC 60529 IP Code standard. Final HDPC Series environmental-rating language should match the approved product documentation.

Simplifying Complex Electrical Architectures

As electronic systems become more integrated, a growing number of sensors, communications circuits, controls, and auxiliary electrical functions may need to connect to a single ECU or centralized controller. Accommodating those circuits with multiple smaller connectors can increase harness complexity and consume valuable enclosure space.

The HDPC Series allows engineers to consolidate up to 64 positions into one bulkhead interface. Depending on the system design, this can reduce the number of separate connectors mounted to an ECU or control enclosure, decrease the number of harness branches required around the module, and reduce the number of individual mating operations during vehicle or equipment assembly.

Fewer connector interfaces can also reduce the number of individual electrical and mechanical connection points that must remain secure throughout the operating life of the equipment. For systems exposed to vibration, water, dust, temperature changes, and repeated service activity, reducing unnecessary connector interfaces can simplify the overall electrical architecture.

This makes the high density rectangular connector especially relevant for centralized electronic systems where circuit count is increasing while available installation space remains limited.

Typical HDPC Series Applications

The HDPC Series high density rectangular connector is designed for signal and auxiliary low-voltage power connections across demanding transportation, off-highway, marine, and industrial systems. Construction and off-highway machinery are particularly strong applications because these platforms combine increasingly sophisticated electronics with vibration, contamination, temperature variation, and limited packaging space.

• Electronic control units (ECUs)
• Vehicle control units
• Centralized vehicle controllers
• Power distribution units and electrical control cabinets
• Construction and off-highway machinery
• Heavy-duty commercial trucks and buses
• Agricultural tractors and equipment
• Forestry equipment
• Mining equipment
• Hydraulic drive controllers
• Special engineering vehicles
• Emergency and specialty vehicles
• Marine deck and vessel control equipment
• GPS navigation and fleet-management systems
• Telematics units
• Industrial automation and control equipment
• Railway auxiliary applications

For construction, agriculture, mining, and other rugged mobile applications, explore additional Amphenol Industrial heavy equipment connector solutions designed for demanding electrical environments.

For industrial control and machinery applications, explore Amphenol Industrial factory automation connector solutions for rugged machinery, motion control, robotics, and other automated equipment.

HDPC Series Configurations and Part Numbers

The HDPC system uses one 64-position bulkhead receptacle with separate 24-position and 40-position cable-side plug configurations. The cable-side connectors are offered in multiple keying options to support different harness configurations.

Part Number	Configuration	Key
CC-FP0004-000	64-Pin Receptacle Bulkhead	N/A
CC-FPA024-PA01	24-Pin Plug	A
CC-FPA024-PB01	24-Pin Plug	B
CC-FPA024-PC01	24-Pin Plug	C
CC-FPA024-PD01	24-Pin Plug	D
CC-FPA040-PA01	40-Pin Plug	A
CC-FPA040-PB01	40-Pin Plug	B
CC-FPA040-PC01	40-Pin Plug	C
CC-FPA040-PD01	40-Pin Plug	D

The cable-side terminals support multiple conductor and wire-diameter configurations. Published terminal options cover conductor sizes from 22 AWG through 14 AWG depending on the selected terminal.

[PENDING XIAOMEN CONFIRMATION — CONTACT PLATING: The terminal ordering tables currently list Ni and Au, while the general specification table states Gold/Tin Plating. Replace this text with the final approved contact-plating options.]

HDPC Series System Integration Considerations

Selecting a high density rectangular connector for an ECU, vehicle controller, or other centralized electronic system requires more than matching the total circuit count. Engineers should consider the electrical load of each circuit, conductor size, cable diameter, connector keying, environmental exposure, vibration, installation space, and the way circuits will be divided between the 24-position and 40-position cable-side plugs.

The HDPC Series has a published maximum operating voltage of 250 V. Documented current ratings include 7.5 A and 5 A depending on conductor and circuit configuration. Final current capability should be evaluated using the applicable wire size, number of energized circuits, ambient temperature, and application-specific operating conditions.

The documented insulation resistance is at least 100 MΩ. The system uses copper-alloy contacts and crimp termination on the cable side. Engineers should refer to the latest product documentation when selecting the exact terminal, conductor size, cable diameter, and connector configuration.

[PENDING XIAOMEN CONFIRMATION — CONTACT PLATING / CONTACT RESISTANCE: Verify the final production plating options before publishing plating-specific contact-resistance values.]

Mechanical performance is also important in off-highway and commercial vehicle applications. HDPC documentation specifies shock and vibration capability together with a central jackscrew locking structure intended to maintain secure mating under demanding operating conditions.

When integrating the system into a control enclosure, engineers should also account for sufficient access to the central jackscrew, cable routing for both the 24-position and 40-position plugs, service access, and correct keying of the cable-side connectors.

Resources & Support

Selecting the right high density rectangular connector requires consideration of circuit requirements, conductor size, current loading, environmental conditions, keying, packaging constraints, and the required 24-position and 40-position cable-side configuration. Review the current HDPC Series data sheet and application documentation when selecting connector and terminal part numbers for a specific system. The HDPC Series provides a high density rectangular connector solution for engineers balancing circuit density, harsh-environment performance, and limited installation space.

Amphenol Industrial technical and sales teams can assist with HDPC Series product selection, harness integration, ECU and controller connectivity, and design-in requirements for construction machinery, commercial vehicles, agriculture, marine equipment, and other harsh-environment systems. Visit Amphenol Industrial Support to discuss a specific application.

Frequently Asked Questions

What is the HDPC Series?

The HDPC Series is a 64-position high density rectangular connector designed for harsh-environment electrical systems. It combines high circuit density, central jackscrew locking, environmental sealing, and a wide operating temperature range for demanding vehicle, machinery, and industrial applications.

How many positions does the HDPC Series have?

The HDPC Series provides 64 total positions at the equipment-side bulkhead interface.

How do the HDPC 24-pin and 40-pin connectors work with the 64-pin receptacle?

The equipment-side HDPC interface uses a 64-position bulkhead receptacle. The cable side is divided between a 24-position plug and a 40-position plug. Together, these two cable-side connectors provide the complete 64-position connection.

Why does the HDPC Series use separate 24-position and 40-position cable-side plugs?

The split 24 + 40 cable-side architecture allows circuits to be organized into two harness connections while maintaining a single 64-position equipment-side interface. This can help simplify harness routing and reduce the number of separate panel-mounted connector interfaces required on an ECU, controller, or enclosure.

How does the HDPC Series lock together?

The HDPC Series uses a central jackscrew locking structure. The mechanical locking system is designed to provide secure engagement and help resist loosening in applications exposed to continuous vibration.

What is the IP rating of the HDPC Series?

[PENDING XIAOMEN CONFIRMATION: Proposed final answer — The HDPC Series provides IP67-IP69K protection in the properly mated condition.]

What temperature range does the HDPC Series support?

The documented operating temperature range for the HDPC Series is -55°C to +125°C.

What voltage and current does the HDPC Series support?

The published maximum operating voltage is 250 V. Documented current ratings include 7.5 A and 5 A depending on conductor and circuit configuration. Engineers should use the latest product documentation and applicable derating information when validating a specific application.

What contact plating is available for the HDPC Series?

[PENDING XIAOMEN CONFIRMATION: Replace this text with the approved production contact-plating options. Current documentation contains conflicting Gold/Tin and Ni/Au references.]

Where is the HDPC Series typically used?

Typical applications include ECUs, vehicle control units, power distribution equipment, construction and off-highway machinery, heavy-duty commercial vehicles, agricultural equipment, mining equipment, marine control equipment, specialty vehicles, telematics systems, and industrial control equipment.

Why use a 64-position high-density connector instead of several smaller connectors?

A high-density connector can consolidate circuits that might otherwise require several smaller connector interfaces. Depending on the electrical architecture, this can reduce connector count, simplify harness routing, reduce the number of mating operations, and make better use of available enclosure and panel space.

Is the HDPC Series suitable for construction and off-highway equipment?

Yes. The HDPC Series is designed for demanding environments including construction machinery and off-highway equipment. Its high circuit density, jackscrew locking system, wide operating temperature range, and environmental protection make the high density rectangular connector a strong fit for ECUs, vehicle controllers, hydraulic control systems, and other electronics used on rugged mobile equipment.