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The 1.27mm female header dual rows SMT type base 4-3H with cap is a 1.27mm pitch dual-row SMT socket featuring phosphor-bronze gold-over-nickel contacts, PA6T UL94V-0 housing and a low 4.3mm base height with positioning cap, optimized for dense, fine-pitch SMT board-to-board connections.
Applications:
High-density communication and networking boards
Compact embedded control units and modules
IoT, wearable and handheld electronic devices
Surface-mount board stacking and mezzanine card interfaces
Highlights:
1.27mm dual-row SMT female header base 4.3H with positioning cap
Fine-pitch contacts (0.45 × 0.15mm) on 1.27mm grid for dense layouts
Electrical ratings: 1A/contact, ≤20mΩ contact resistance, ≥1000MΩ insulation, AC 500V withstand
Phosphor-bronze contacts with nickel underplate and gold finish for signal integrity
PA6T + 30% GF UL94V-0 housing; reflow capable to 260°C ±5°C / 10s
Supplied in tape & reel for automated SMT placement; RoHS, REACH SVHC and low-halogen compliant
1.27mm Female Header Dual Rows SMT Type Base 4.3H with cap is a compact, high-density surface-mount socket designed for fine-pitch board-to-board and signal interconnects. This 1.27mm Female Header Dual Rows SMT Type Base 4.3H with cap provides two parallel rows of receptacle contacts on a 1.27mm (.050″) pitch, using 0.45 × 0.15mm phosphor-bronze terminals to ensure reliable mating with matching 1.27mm headers.
The SMT body has a 4.30mm base height (“BASE 4.3H” per drawing), while the molded positioning cap raises the overall height to about 5.50mm and offers a flat surface for pick-and-place handling. The recommended pad layout uses dual rows with 1.27mm contact spacing and 0.60mm row-to-row distance, giving stable solder joints and precise alignment during reflow.
| General | |||
| Status | Active | Category | PCB Headers and Receptacles |
| Series | DW-FH-2127118WV20P-01TR-01 | Description | 1.27mm Pitch Dual Row Female Header, SMT Type, 4.3mm Base Height, Gold Plated Contacts, Tray or Tape & Reel Packaging |
| Application | Board-to-Board, Signal, Wire-to-Board | Component Type | Connector Assembly |
| PCB Connector Type | PCB Mount connector | UPC | — |
| Keywords | Board-to-Board connector, Female Header, SMT Pin Header, PCB Mount Header, Dual Row Pin Header, Header connector, Surface Mount Pin Header, Electronic Connector | Connector & Contact Terminates to | Printed Circuit Board |
| Electrical | |||
| Rated Voltage | AC 500V | Current Rating | 1.0A |
| Contact Resistance | ≤20mΩ Max | Insulation Resistance | ≥1000MΩ Min |
| Dielectric Withstanding Voltage | AC 500V | Norm | EIA-364C |
| Physical | |||
| Breakaway | No | Circuits (Number of Positions) | 18 |
| Circuits (Maximum) | 80 (series range) | Color – Housing | Black |
| Durability (mating cycles max) | 100 | Flammability | UL94V-0 |
| Glow-Wire Capable | No | Lock to Mating Part | No |
| Material – Metal | Phosphor Bronze | Material – Plating Mating | Gold over Ni |
| Material – Plating Soldering Area | Gold over Ni | Material – Resin | PA6T UL94V-0 |
| Metal Shape & Form | Square Pin (0.45mm × 0.15mm) | Number of Rows | 2 |
| Connector Orientation | Vertical / Straight | Packaging Type | Tray / Tape & Reel |
| PCB Locator | No | PCB Retention | No |
| PC Tail Length | 0.32mm Ref | Pitch – Mating Interface | 1.27mm |
| Plating min – Mating | 0.76μm (30μ”) | Plating min – Termination | 0.76μm |
| Polarized to Mating Part | No | Polarized to PCB | No |
| Shrouded | Yes | Stackable | No |
| Operating Temperature | -40° to +105°C | Termination Interface Style | Surface Mount |
| Square Terminal Post & Tail Dimension | 0.45mm × 0.15mm | PCB Mount Retention | W/O |
| PCB Mount Alignment | W/O | Connector Mounting Type | PCB Mount |
| PCB Thickness (Recommended) | 1.57mm | Row-to-Row pitch | 1.27mm |
| Net Weight | — | Height of connector above PCB | 4.63mm |
| Solder Process Data | |||
| Max-Duration | 5~10 sec | Lead-Free Process Capability | IR-Reflow |
| Max-Cycle | 1 | Max-Temp | 260°C ±5°C |
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