1×4 Machined Round Hole Female Header: High-Reliability Interconnect
Precision Screw-Machined Contacts for Demanding Applications
The 1×4 Round Hole Female Header Socket (2.54mm pitch) is a premium interconnect solution engineered for high-reliability environments. Unlike standard stamped headers, our machined pin technology provides a 360-degree contact surface, ensuring superior electrical performance and mechanical retention for both round and square pin headers.
Why Choose Machined Round Hole Sockets?
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High-Cycle Life: Precision screw-machined housings withstand significantly more mating cycles than standard stamped contacts.
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Vibration Resistance: The circular contact geometry provides a multi-point connection, preventing signal loss in high-vibration industrial or automotive settings.
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Low Profile & High Precision: With a body height of 7.0mm, it offers a compact yet robust footprint for dense PCB layouts.
Technical Specifications
| Parameter | Detailed Specifications |
| Configuration | 1×4 Single Row |
| Pitch | 0.100″ (2.54mm) |
| Contact Type | Machined Round Hole (Four-Finger Clip) |
| Pin Compatibility | Fits 0.015″–0.025″ Round Pins & 0.025″ Square Posts |
| Contact Plating | Gold Flash (3u” min) for signal integrity |
| Solder Tail | Tin-plated for optimal PCB wetting |
| Insulator | High-temp PPS or PBT (UL94V-0) |
| Current Rating | 3.0 Amps per contact |
Key Engineering Features
1. Dual-Purpose Interconnect
The unique circular internal clip is designed to be “Universal.” While optimized for machined round pins (0.40mm – 0.50mm), it maintains a gas-tight seal on standard 0.635mm square post headers, offering designers maximum flexibility without switching components.
2. Superior Material Performance
Jiatel utilizes high-quality brass for the outer shell and a Beryllium Copper (BeCu) inner clip. This combination ensures maximum spring retention and prevents contact fatigue over long-term use in temperature ranges from -40°C to +105°C.
3. Machined vs. Stamped Comparison
While stamped headers are cost-effective, our screw-machined sockets offer:
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Lower contact resistance (<10mΩ).
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Zero “wicking” during soldering due to the solid-bottom barrel design.
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Precise alignment for multi-board stacking.
Professional Applications
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High-End Audio/Video: Used in signal-sensitive pre-amps, DACs, and mixing consoles to ensure zero signal distortion.
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Automated Test Equipment (ATE): Perfect for test fixtures requiring thousands of insertions.
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Industrial Control: Reliable signal transmission for PLC modules and robotic controllers.
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Medical Electronics: Stable power and data paths for diagnostic instruments.
Ordering & Support
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Samples: Free sample kits available for compatibility testing.
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Customization: Custom pin counts (1×2 to 1×40) and specialized plating (10u”, 30u” Gold) available upon request.
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Compliance: Fully RoHS and REACH compliant.
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