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SEGGER Microcontroller GmbH

SEGGER 10-Pin Needle Adapter for J-Link Debug Programming

SEGGER 10-Pin Needle Adapter for J-Link Debug Programming

Adapts 20-pin J-Link connector to 10-pin needle pattern for connector-free PCB debugging

SKU: 8.06.04

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€120,95 EUR exc tax
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Key Features

Foolproof three-pin positioning prevents misconnection
High-reliability spring pins rated >100,000 cycles
Eliminates PCB header costs and board space
Full JTAG and SWD protocol support
Optional 5V target power delivery
Compatible with all SEGGER debug probes
Minimal PCB footprint requirement

Overview

The SEGGER 10-Pin Needle Adapter represents a sophisticated solution for embedded developers seeking to eliminate bulky programming headers whilst maintaining full debug capabilities. This precision-engineered adapter bridges the gap between SEGGER's standard 20-pin debug interface and a minimal 10-pin needle footprint on your target PCB.

Unlike traditional headers that consume valuable PCB real estate and add component costs, this needle adapter contacts directly with copper pads through high-reliability spring pins. The innovative three-pin positioning system prevents incorrect connections whilst the robust spring contacts withstand over 100,000 programming cycles.

Engineers choose this solution for space-constrained designs, high-volume production runs, and anywhere connector costs impact project viability. The adapter supports both JTAG and SWD protocols with optional target power delivery, making it suitable for everything from initial prototype bring-up to final production programming. Compatible with the complete range of SEGGER J-Link debug probes and Flasher production tools, this adapter integrates seamlessly into existing development workflows.

Eliminate Header Costs

Save 15-25p per PCB by removing expensive programming connectors whilst maintaining debug capability

Space-Constrained Designs

Minimal footprint allows debugging on compact boards where traditional headers won't fit

Production Reliability

High-cycle spring pins withstand volume programming without degradation or contact wear

Advanced Needle Adapter for Connector-Free Programming

The SEGGER 10-Pin Needle Adapter transforms how engineers connect J-Link and Flasher debug probes to target PCBs. This precision adapter eliminates the need for mounted connectors on your circuit boards whilst providing reliable spring-pin contact to a specialised footprint pattern.

Foolproof Connection Design

Three strategically positioned locating pins ensure the adapter can only connect in the correct orientation, preventing costly connection errors during development and production programming.

Cost-Saving PCB Design: Remove headers, save board real estate, reduce BOM costs by up to 15p per unit whilst maintaining professional debugging capabilities.

Technical Specifications

Input Connector 20-pin 0.1" (2.54mm) standard JTAG/SWD
Output Pattern 10-pin 0.05" (1.27mm) needle pattern
Spring Pins High-reliability, >100,000 cycle rating
PCB Footprint Minimal space requirement with tri-pin keying
Target Power Optional 5V supply via pin 9 (300mA max)

Signal Mapping & Pinout

The adapter provides full JTAG and SWD signal access including:

  • JTAG Signals: TCK, TDI, TDO, TMS, TRST
  • SWD Signals: SWCLK, SWDIO, SWO
  • Control: RESET, VTref, GND
  • Power: 5V target supply (optional)
Needle adapter PCB footprint pattern with positioning guides

PCB Layout Requirements

Pad Specifications: - Contact pads: 0.8mm diameter minimum - Positioning holes: 0.7mm diameter - Solder mask: Must be clear of contact pads - No solder paste on needle contact areas - 0.5mm clearance from other traces

Compatible Debug Probes

Works seamlessly with all SEGGER debug tools including J-Link BASE, PLUS, PRO, ULTRA+, EDU, and Flasher series. The 20-pin standard interface ensures universal compatibility across the SEGGER ecosystem.

Production Programming: Ideal for high-volume manufacturing where repeated connection cycles demand reliable contact without wear on target PCBs.

Frequently Asked Questions

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  • Does the adapter work with all SEGGER debug software?

    Yes, the adapter is transparent to debug software. All SEGGER tools including J-Link Commander, Ozone debugger, and third-party IDEs work without modification.

  • How do I ensure reliable contact during automated testing?

    The spring-loaded pins automatically adjust to slight PCB thickness variations. For production fixtures, ensure the adapter is held perpendicular to the PCB with consistent downward pressure.

  • What happens if I need to modify the cable or connector?

    The adapter includes a fixed cable assembly. For custom modifications or different cable lengths, contact SEGGER directly or consider the 50-mil 10-pin patch adapter for custom wiring.

  • Can I use this for SWD debugging without JTAG signals?

    Absolutely. The adapter supports both JTAG and SWD protocols through the same footprint. SWD uses SWCLK and SWDIO signals mapped to the needle pattern.

  • Is this adapter compatible with third-party debug probes?

    The adapter uses SEGGER's proprietary needle footprint pattern. For universal compatibility, consider Tag-Connect TC2050 solutions which support multiple debugger brands.

  • How many programming cycles can I expect from the spring pins?

    The high-reliability spring pins are rated for over 100,000 connection cycles, making them suitable for high-volume production programming without degradation.

  • What PCB layout rules must I follow for the needle footprint?

    Contact pads require 0.8mm minimum diameter with clear solder mask. Position holes need 0.7mm diameter. Maintain 0.5mm clearance from other traces and never apply solder paste to contact areas.

  • How does the positioning system prevent incorrect connections?

    Three precision-positioned locating pins mechanically key the adapter to your PCB footprint. The adapter physically cannot connect incorrectly, preventing damage from reverse or offset connections.

  • Can I power my target board through this adapter?

    Yes, pin 9 provides 5V at up to 300mA for target power. This eliminates the need for separate power supplies during programming and debugging sessions.

  • What's the difference between this and the 6-pin needle adapter?

    The 10-pin version provides full JTAG support (TDI, TDO, TCK, TMS) plus optional target power, whilst the 6-pin variant supports SWD debugging only. Choose 10-pin for maximum compatibility.

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