SEGGER J-Link Adapters & Cables
Adapters & AccessoriesComplete range of J-Link adapters and cables, 9-pin, 19-pin, 20-pin adapters, pin converters, and target-specific connectors for every debug setup. Available in India from GSAS.
Type
Adapters, cables, converters
Connectors
9-pin, 14-pin, 19-pin, 20-pin
Interfaces
JTAG, SWD, SWO
Compatibility
All J-Link models
Use Case
Pin conversion & target connection
Overview
About J-Link Adapters & Cables
SEGGER offers a comprehensive range of adapters and cables for connecting J-Link debug probes to any target hardware, regardless of connector type or pin configuration. Whether the target uses a standard 20-pin JTAG header, a compact 10-pin Cortex Debug connector, a 19-pin Cortex + Trace connector, or a custom pin layout, there is an adapter in the J-Link ecosystem that bridges the gap, eliminating the need for custom wiring or third-party adapter boards.
Adapter Catalog
The J-Link adapter range covers the most common debug connector standards used across the embedded industry:
| Adapter | Description |
|---|---|
| 19-Pin Cortex-M Adapter | JTAG, SWD, and SWO connections to the 19-pin 0.05” Samtec FTSH header defined by Arm |
| 9-Pin Cortex-M Adapter | JTAG, SWD, and SWO connections to the 9-pin 0.05” Samtec FTSH header (no target power on the 9-pin connector) |
| 50-Mil 10-Pin Patch Adapter | Adapts the standard 20-pin 0.1” connector to the 10-pin 0.05” Cortex-M connector |
| 14-Pin TI Adapter | Adapts the 20-pin output to the Texas Instruments 14-pin 0.1” JTAG connector (JTAG only) |
| 10-Pin and 6-Pin Needle Adapters | High-reliability spring pins for boards without a mating connector or programming header |
| 5V Target Supply Adapter | Supplies 5 V to the target board while passing all debug signals 1:1 |
| Supply Adapter | Provides a fixed VTRef I/O voltage level, configurable from 1.2 V to 5.0 V by swapping a single resistor |
| 20-Pin Ribbon Cable | Replacement 0.1” 20-pin target ribbon cable |
All adapters are designed for the standard J-Link 20-pin output connector and are compatible with J-Link models from the BASE and PLUS through to the PRO and ULTRA, as well as SEGGER’s Flasher production programmers, so adapters bought for development probes carry over to the production line. For programming external SPI flash, no adapter is needed: SEGGER’s J-Flash SPI software drives SPI flashes directly through the standard connector.
Buy J-Link Adapters and Cables in India from GSAS
GSAS Micro Systems, an authorized engineering partner in India, supplies the full range of J-Link adapters and cables with competitive pricing and short lead times. Our field application engineers in Bengaluru, Hyderabad, Chennai, Pune, Mumbai, and Delhi NCR help you match the right adapter to your target connector before you order, whether you are connecting a J-Link BASE to a fine-pitch header or fitting out a production fixture fleet for J-Link PRO probes. For custom adapter requirements or bulk orders, request a quote.
Blog
SEGGER Insights
Meet the GSAS Team at electronica India 2026, Stall H3.I45
electronica India 2026 opens on 16 September at BIEC Bengaluru. The GSAS team is on the floor all three days at Stall H3.I45, and this is who you will be talking to and what they can show you.
J-Link Is Now Validated by ST for StellarStudio
STMicroelectronics has fully validated SEGGER J-Link for StellarStudio, the IDE for its Stellar automotive MCU family, and put the probe into continuous validation at Le Mans. What that changes for the toolchain review on a Stellar programme, from GSAS, an authorized engineering partner for SEGGER in India.
An AI Agent That Drives the Debugger: SEGGER and Embedder Connect J-Link to the Loop
SEGGER has given an AI coding agent direct control of J-Link and J-Trace: flash, breakpoints, memory inspection and live RTT on real silicon. The loop only works if the probe can read target RAM while the core runs, and GSAS field engineers know exactly where that breaks first.
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J-Link ULTRA
SEGGER's ultra-fast J-Link debug probe, now redesigned: compact USB-C housing, 4 MB/s download over USB 2.0 Hi-Speed, standard 20-pin JTAG/SWD connector. Buy J-Link ULTRA in India from GSAS Micro Systems.
View J-Link ULTRA →FAQ
Common questions about J-Link Adapters & Cables
Do J-Link adapters work across J-Link models?
Can the same adapters be used with SEGGER Flasher production programmers?
Which adapter do I need for a 19-pin Cortex-M trace header?
My target board has no debug header. What are my options?
Where can I buy J-Link adapters and cables in India?
Interested in J-Link Adapters & Cables?
Get pricing, an evaluation unit, or a technical consultation from our application engineers.