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Harwin 1.23 mm Spring Contact, Surface Mount, Titanium Copper Alloy, Gold Plated, 1A S7221-45R
Specifications
| Country of Origin | Korea |
|---|---|
| Brand | HARWIN |
| Material | Titanium Copper Alloy |
| Current | 1A |
| Height | 1.23mm |
| Length | 2.6mm |
| Model | S7221-45R |
| Width | 1mm |
| Contact Resistance | 50mΩ |
| Contact Plating | Gold |
| Fixing Method | Surface Mount |
Key Features
- Ultra-low profile design with 1.23 mm height for compact applications.
- Titanium copper alloy construct offers strength and durability.
- Gold plated contacts ensure long-term corrosion resistance and stable conductivity.
- Surface mount package suitable for automated PCB placement.
- Rated for 1A current, with 50 mΩ contact resistance for efficient electrical transfer.
- Positive stop shoulder prevents overcompression, ensuring consistent spring force.
- Protected tip avoids accidental hooking during installation.
- Supports both wiping and sliding contact actions as required in antenna and signal interfaces.
Product Description
Harwin S7221-45R is a high-performance spring contact engineered for advanced electronic applications demanding ultra-low profiles and reliable surface mount connectivity. With a design height of just 1.23 mm, this contact is ideal for space-constrained layouts and mobile device integration, including antenna feeds, LED lamp connections, and RFID tags.
Built from titanium copper alloy, the S7221-45R ensures robust mechanical integrity and optimal electrical properties, making it highly suitable for demanding environments. The contact plating is gold, a premium industry standard for low resistance and durable corrosion protection, ensuring stable signal transmission over extended working life. The contact's resistance is rated at 50 mΩ, supporting a maximum current of 1A, which is well suited for most PCB antenna and signaling needs.
The unique form factor and surface mount package are designed for use with automated placement equipment and streamlined production-line workflows. A positive stop shoulder prevents over-compression of the contact, avoiding spring force reduction and maintaining reliable mechanical operation. The protected tip feature reduces the risk of hooking or accidental damage during assembly, ensuring smooth integration into mobile device chassis or other electronic assemblies.
This spring contact is engineered for both wiping and sliding actions, offering maximum versatility for designers working on mobile devices, IoT hardware, lighting arrays, or any project requiring flexible low-profile grounding or signal connectivity. The S7221-45R belongs to Harwin's EZ-BoardWare SMT series, renowned for their production-ready features and wide compatibility across standard PCB designs.
Applications include antenna feeds in smartphones and portable devices, LED lamp circuitry, RFID tag construction, and other commercial or industrial prototypes requiring minimal height, durability, and reliable electrical performance.
Choose Harwin spring contacts for critical PCB projects in commercial electronics, IoT devices, lighting, and RF applications. Browse more advanced connectors and PCB interface components in EnvMart's Electronics category or explore the full Harwin range for cutting-edge solutions.
Explore more products in our Electronic Connector category.
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Frequently Asked Questions
The height of the Harwin S7221-45R spring contact is 1.23 mm, making it suitable for compact applications.
This model is rated for a maximum current of 1A, which is appropriate for various PCB applications.
The spring contact is constructed from titanium copper alloy, which provides strength and durability.
The contact resistance of the S7221-45R is rated at 50 mΩ, ensuring efficient electrical transfer.
This model uses a surface mount fixing method, making it suitable for automated PCB placement.
The dimensions of this model are 2.6 mm in length, 1 mm in width, and 1.23 mm in height.
The contacts of the S7221-45R are gold plated, which provides corrosion resistance and stable conductivity.
This spring contact is suitable for applications such as antenna feeds, LED lamp connections, and RFID tags.
The design includes a positive stop shoulder that prevents over-compression, ensuring consistent spring force.
This model supports both wiping and sliding contact actions, providing versatility for various applications.
The country of origin for the Harwin S7221-45R is Korea.
The S7221-45R belongs to Harwin's EZ-BoardWare SMT series, known for its production-ready features.
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