TST-111-05-G-D SAMTEC Connector (Other) In Stock
SAMTEC TST-111-05-G-D is a 22-position dual-row shrouded PCB header with 0.100 inch pitch and gold-plated contact finish for high-reliability board-to-cable connections. Suitable for industrial, instrumentation, and embedded computing applications requiring polarized dual-row headers. Available with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 22
- Lifecycle
- ACTIVE
- Datasheet
- TST-111-05-G-D Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TST-111-05-G-D?
- 22-position dual-row shrouded housing at 0.100 inch (2.54 mm) pitch with polarizing key to prevent mis-mating
- Gold (G) contact finish providing contact resistance below 10 milliohms and rated for over 500 mating cycles
- Standard 2.54 mm pitch compatible with IDC ribbon cable assemblies and common 0.100 inch pitch female connectors
What is TST-111-05-G-D used for?
The TST-111-05-G-D is designed for board-to-cable and board-to-board connections in embedded systems, test equipment, and industrial controllers where gold-plated contact reliability is required over hundreds of mating cycles. Its 22-position dual-row shrouded configuration at 0.100 inch pitch supports IDC ribbon cables, internal wiring harnesses, and backplane signal interfaces. The gold contact finish makes it particularly appropriate for low-level signal interfaces where contact resistance stability below 10 milliohms is critical.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TST-111-05-G-D datasheet?
TST-111-05-G-D Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TST-111-05-G-D?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the gold contact finish on the TST-111-05-G-D extend connector service life compared to tin-finished alternatives?
The gold (G) contact finish on the TST-111-05-G-D maintains contact resistance below 10 milliohms and is rated for over 500 mating cycles without significant degradation, whereas tin-finished contacts typically degrade after 50 to 100 cycles in repeated-use applications. For 22-position dual-row headers in test fixtures and field-serviceable embedded systems at 0.100 inch pitch, the gold finish provides a significant reliability advantage and lower long-term maintenance cost.
Which embedded or industrial designs benefit most from the TST-111-05-G-D shrouded 22-pin format?
The shrouded 22-position dual-row format of the TST-111-05-G-D at 0.100 inch pitch is most beneficial in industrial control systems with regular maintenance access, laboratory test fixtures that undergo daily cable reconnections, and embedded computer modules with GPIO or bus expansion headers. The shroud prevents the 22-pin cable from being inserted offset by one row, which would connect power to signal pins and potentially destroy components rated for 3.3 V or 5 V logic.
How does the TST-111-05-G-D compare to the TST-111-03-T-D in terms of contact performance for low-signal-level applications?
The TST-111-05-G-D uses a gold (G) contact finish rather than the tin-over-nickel finish of the TST-111-03-T-D, making it the preferred choice for low-level analog or digital signals below 100 mV where even a few milliohms of additional contact resistance can introduce measurement errors. Gold plating resists oxide formation, keeping contact resistance stable below 10 milliohms across hundreds of mating cycles, compared to tin-finished contacts which can rise above 50 milliohms after repeated cycling in humid or industrial environments.
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