The HRS / Hirose DF51 Series is a 2.0 mm pitch connector system designed for wire-to-board, wire-to-wire, branch, and multi-branch cable assembly applications. It supports single-row and double-row configurations, vertical and right angle PCB headers, crimp socket housings, in-line plug housings, branch adapters, and compatible crimp contacts.
No suffix: tin plating.
Suffix code (01): gold plating.
Suffix code (20): tin plating, tray packaging.
Suffix code (50): gold plating, tray packaging.
| Parameter | DF51 Range |
|---|---|
| Connector Pitch | 2.0 mm |
| Connection Type | Wire-to-board, wire-to-wire, standard branch, and multi-branch |
| PCB Header Direction | Vertical / straight type and horizontal / right angle type |
| Number of Rows | Single row and double row |
| Standard Single-Row Positions | 2 to 6 positions |
| Single-Row Branch Positions | 2, 3, 4, 6, and 7 positions |
| Double-Row Positions | 4 to 30 positions, even-numbered positions |
| Locking Method | Positive side lock / side-lock structure |
| Mis-Insertion Prevention | Polarized structure and position-count-based mating prevention |
| PCB-Side Surface Finish | Tin plating or gold plating |
| Cable-Side Contact Finish | Tin plating or gold plating |
| Certifications | UL and C-UL, file number E52653 |
| Parameter | Range |
|---|---|
| Applicable Wire Gauge | AWG24 to AWG28 |
| Insulation Outside Diameter | 0.90 to 1.45 mm diameter |
| Strip Length | 1.9 to 2.3 mm |
| Recommended Wire Types | UL1061 and UL1007 |
| Surface Finish | Tin plating or gold plating |
| Parameter | Range / Specification |
|---|---|
| Product Rated Voltage | 250V AC/DC |
| UL / C-UL Certified Rated Voltage | 30V AC/DC |
| Operating Temperature | -55°C to +105°C, including temperature rise caused by current flow |
| Operating Humidity | 20% to 80% RH, non-condensing |
| Storage Temperature | -10°C to +60°C |
| Storage Humidity | 40% to 70% RH |
| Contact Resistance | 30 mΩ maximum |
| Insulation Resistance | 1,000 MΩ minimum, tested at 500V DC |
| Withstanding Voltage | 650V AC for 1 minute, with no breakdown or flashover |
| Vibration Discontinuity | No discontinuity of 1 μs or longer |
| Tin-Plated Mating Cycle Life | 30 cycles |
| Gold-Plated Mating Cycle Life | 50 cycles |
| Customization Item | Available Options |
|---|---|
| Connector End | DF51 single-row or double-row crimp socket housing, in-line plug housing, or branch adapter |
| Board-Side Connector | Single-row or double-row straight through-hole header, right angle through-hole header, tin-plated or gold-plated |
| Number of Positions | Single-row: 2 to 7 positions; double-row: 4 to 30 positions |
| Wire Gauge | AWG24, AWG26, and AWG28 |
| Wire Type | UL1061, UL1007, or project-specified discrete wire |
| Cable Length | Custom lengths are available, such as 50 mm, 100 mm, 300 mm, 500 mm, 1 m, and other customer-specified lengths |
| Wiring Configuration | 1:1 straight wiring, cross wiring, split wiring, branch wiring, multi-branch wiring, and custom pin assignments |
| Opposite End Interface | Stripped wire, tinned wire, terminals, JST, Molex, HRS connectors, Dupont terminals, or other custom interfaces |
| Processing Method | Crimp termination, wire cutting, stripping, tinning, labeling, and harness assembly |
| Testing | Continuity test, short-circuit test, wiring sequence test, pull test if required, and visual inspection |
| Packaging | Individual packaging, bulk bag packaging, label packaging, and customized packaging |
DF51 cable assemblies are suitable for compact internal wiring where a 2.0 mm pitch positive-lock connector is required. Typical applications include industrial control equipment, office automation devices, measuring instruments, power and signal harnesses, branch cable assemblies, compact electronic modules, and general wire-to-board or wire-to-wire connection systems.
For Existing Product Designs or Samples
If you already have product drawings or physical samples, simply provide them to us, and we can proceed with production.
Custom Product Development (No Existing Reference)
If you need to develop a new product without existing samples or drawings, please provide the following details for our design team to create a tailored solution: a. Electrical Requirements: Operating current and voltage. b. Connector Specifications: Model numbers, samples, or specifications for connectors at both ends of the cable. c. Pin Configuration: Pin-to-pin correspondence for the cable assembly. d. Environmental Conditions: Application scenario (e.g., lawn mowers, mining equipment) and required certifications (oil resistance, waterproofing, high-temperature tolerance, flexing tests, etc.). e. Electrical Testing Requirements: Transmission characteristics, voltage withstand, conduction resistance, insulation resistance, etc.
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Ordering Flexibility
✓ Minimum Order: 1 unit ✓ Small-Batch Samples: Available from 1 unit ✓ Large-Scale Orders: Standard lead time from original manufacturers.
Key Features
✓ Minimum Order: 1 unit Small-Quantity Friendly: Ideal for prototyping and niche projects. Bulk Order Efficiency: Seamless scaling from trial to mass production.