The 1.27mm dual row SMT pin header DW-PH-1127921 series is a compact surface-mount PCB connector featuring 0.40 mm square brass contacts, PA6T+30%GF UL94 V-0 insulation, configurable pin counts and multiple plating options. It is rated for 1 A, operates from −40°C to +105°C and is supplied in tape-and-reel packaging.
Typical applications for this connector type include:
1.27mm dual row SMT pin header DW-PH-1127921WRnP-XXTR-01 is a compact surface-mount PCB connector designed for board-level signal interconnection where reduced spacing and flexible circuit counts are required. The supplied Dragon Well drawing identifies a dual-row configuration with a nominal 1.27 mm contact pitch and square brass contacts measuring 0.40 ± 0.03 mm.
The connector uses a PA6T housing reinforced with 30% glass fiber and rated UL94 V-0 according to the drawing. Its contact material is brass, while the general specification identifies gold-flash contact plating. The ordering-code table also provides additional plating options including 3 µin, 6 µin, 15 µin and 30 µin gold, as well as tin and nickel options. The exact plating should therefore be selected through the XX portion of the part number.
Electrical performance for this 1.27mm dual row SMT pin header includes a 1 A current rating, 20 mΩ maximum contact resistance, 1000 MΩ minimum insulation resistance and 1000 V AC/DC dielectric withstand rating. The specified operating-temperature range is −40°C to +105°C.
The connector has a 1.50 mm insulator height and approximately 2.00 mm housing width. Its SMT contact geometry is designed for direct soldering to PCB pads, and the drawing specifies resistance to soldering heat of 260°C for a maximum of five seconds.
The dimensional table covers total-pin configurations from 02 through 50, with corresponding DIM A and DIM B values. This allows the 1.27mm dual row SMT pin header family to support different PCB layouts and circuit-count requirements. Tape-and-reel packaging is specified by the TR ordering code for automated production handling.
| General | |||
| Status | Active | Category | PCB Headers and Receptacles |
| Series | DW-PH-1127921WRnP-XXTR-01 | Description | 1.27 Pitch Pin Header Single Row SMT Type |
| Application | Signal / Board-to-Board | Component Type | Connector Assembly |
| PCB Connector Type | PCB Mount Header | Product Name | Pin Header CONN |
| Keywords | 1.27 Pin Header, Single Row Pin Header, SMT Header, Surface Mount Header, Right Angle Header | Contact Type | Pin |
| Electrical | |||
| Rated Voltage | N/A | Current Rating | 1A |
| Contact Resistance | 20mΩ Max. | Insulation Resistance | 1000MΩ Min. |
| Dielectric Withstand | 1000V AC/DC | Norm | RoHS Compliant |
| Physical | |||
| Breakaway | N/A | Circuits / Number of Positions | Variable, 02P–50P |
| Circuits Maximum | 50P | Color – Housing | N/A |
| Durability / Mating Cycles | N/A | Flammability | UL94V-0 |
| Glow-Wire Capable | N/A | Lock to Mating Part | N/A |
| Material – Metal | Brass | Material – Plating | Gold Flash |
| Material – Plating Solder | N/A | Material – Resin | PA6T+30%GF, UL94V-0 |
| Metal Shape and Form | SQ0.40 | Number of Rows | 1 |
| Connector Orientation | Horizontal / 90° | Packaging Type | Tape Reel |
| PCB Locator | N/A | PCB Retention | N/A |
| PC Tail Length | 1.25±0.35mm | Pitch – Mating Interface | 1.27mm |
| Plating Min – Mating | See part number code | Plating Min – Termination | N/A |
| Polarized to Mating Part | N/A | Polarized to PCB | N/A |
| Shrouded | No | Stackable | N/A |
| Operating Temperature | -40°C to +105°C | Termination Interface | Surface Mount |
| Square Terminal Post | SQ0.40 | PCB Mount Retention | N/A |
| PCB Mount Alignment | N/A | Connector Mounting | Surface Mount / SMT |
| PCB Thickness Recommended | N/A | Row-to-Row Pitch | N/A |
| Height of Connector | 2.00mm | Recommended PCB Hole Dia. | N/A |
| Solder Process Data | |||
| Max-Cycle | N/A | Max-Duration | 10s Max |
| Lead-Free Process Compatible | Yes (RoHS Compliant) | Max-Temp | 260°C±5°C |
