61301821121 Würth Elektronik Connector (Header, Vertical) In Stock
The Würth Elektronik 61301821121 is an 18-pin dual-row straight through-hole pin header from the WR-PHD series, featuring a standard 2.54 mm (0.100-inch) pitch and gold-plated contacts for low-contact-resistance interconnection. The vertical plug orientation and male gender allow direct mating with standard 2.54 mm pitch receptacle sockets or IDC connectors. Available in volume quantities, this header suits prototyping, development boards, and production PCB applications.
- Manufacturer
- Würth Elektronik
- Package
- Header, Vertical
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- 61301821121 Datasheet PDF
- Category
- Connector
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 18-pin dual-row 2.54 mm pitch through-hole header provides 9 positions per row for compact signal and power connections
- Gold (Au) contact plating ensures low contact resistance and reliable mating over many insertion cycles on 3.3 V and 5 V logic
- Straight vertical plug orientation and standard 0.100-inch pitch enables compatibility with IDC cables, ribbon connectors, and socket strips
Applications
The Würth Elektronik 61301821121 is widely used on Arduino shields, Raspberry Pi HATs, and development evaluation boards where standard 2.54 mm dual-row headers provide versatile expansion connections for GPIO, SPI, I2C, and UART interfaces. Its 18-pin configuration suits 16-bit parallel bus connections and multi-channel analog or digital I/O headers in embedded system prototypes. The gold-plated contacts ensure reliable signal integrity in repetitive plug-unplug scenarios typical of laboratory development and field-programmable electronics.
Specifications
| YTEOL | 15 |
| Body Breadth | 0.2inch |
| Body Depth | 0.1inch |
| Body Length | 0.9inch |
| Body/Shell Style | PLUG |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | NOT APPLICABLE |
| Contact Finish Termination | Gold (Au) |
| Contact Gender | MALE |
| Contact Material | NOT APPLICABLE |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 20mΩ |
| Contact Style | RND PIN-SKT |
| Dielectric Withstanding Voltage | 500VAC V |
| Filter Feature | NO |
| Insulation Resistance | 1000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | POLYBUTYLENE TEREPHTHALATE |
| JESD-609 Code | e4 |
| Mating Contact Pitch | 0.1inch |
| Mating Contact Row Spacing | 0.1inch |
| Mixed Contacts | NO |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 2.54mm |
| Rated Current (Signal) | 3A |
| Terminal Length | 0.118inch |
| Terminal Pitch | 2.54mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 18 |
| Package | Header, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many pins per row does the 61301821121 provide, and what is its contact pitch?
The 61301821121 is an 18-pin dual-row header with 9 contacts per row arranged at a 2.54 mm (0.100-inch) pitch. This standard pitch is compatible with a wide range of mating receptacles, IDC cable connectors, and breadboard sockets, making the connector suitable for development boards, expansion modules, and production PCBs requiring 18 signals in a compact dual-row layout.
How does gold-plated contact finish benefit the 61301821121 in repeated mating cycle applications?
Gold (Au) plating provides very low and stable contact resistance — typically below 10 mΩ — even after hundreds of mating cycles. Unlike tin-plated contacts that develop oxide layers increasing resistance over time, gold remains conductive in humid or lightly corrosive environments. This is important for 3.3 V or 5 V logic signals where even small contact resistance increases could cause voltage drops that affect signal integrity on embedded development boards.
For a PCB design using the 61301821121, what board-level considerations apply for its through-hole footprint?
The 61301821121 requires 18 plated through-holes at 2.54 mm pitch arranged in 2 rows with 9 holes each. Standard hole diameter for 2.54 mm pitch pin headers is 0.8 mm to 1.0 mm with a PCB pad diameter of 1.6 mm to 2.0 mm. The connector body measures 0.9 inch x 0.2 inch (22.86 mm x 5.08 mm), and its straight vertical orientation adds approximately 11 mm of height above the PCB surface when fully seated.
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About Würth Elektronik
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