TST-109-02-L-D SAMTEC Connector (Other) In Stock
SAMTEC TST-109-02-L-D is an 18-position dual-row shrouded PCB header with 0.100 inch pitch and gold-over-nickel contact finish, providing polarized, keyed board-to-cable or board-to-board connections in industrial and commercial electronics applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- TST-109-02-L-D Datasheet PDF
- Category
- Connector
- Price
- From $0.8679(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TST-109-02-L-D?
- 18-position dual-row shrouded header with 0.100 inch (2.54 mm) pitch and 1.2 inch body length provides polarized PCB connectivity with mis-insertion prevention via full shroud keying
- Gold (10 µin) over Nickel mating contacts with Tin-Nickel termination finish deliver low contact resistance and reliable solder joint integrity for through-hole PCB assembly
- Square-pin male contact style on a 0.365 x 0.365 inch body cross-section mates with standard IDC ribbon cable sockets and discrete wire housings for flexible cable assembly options
What is TST-109-02-L-D used for?
The TST-109-02-L-D is used in industrial control panels, PLC expansion modules, and embedded system I/O boards that require reliable 18-pin ribbon cable interconnects using the standard 0.100 inch (2.54 mm) pitch. The shrouded housing provides polarization and protects pins during cable insertion, making it suitable for field-replaceable cable assemblies in harsh industrial environments operating across -55°C to +125°C. Its through-hole termination ensures robust solder joint strength for applications subject to vibration or repeated cable mating cycles.
What are the specifications of TST-109-02-L-D?
| YTEOL | 9.1 |
| Body Breadth | 0.365inch |
| Body Depth | 0.365inch |
| Body Length | 1.2inch |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD (10) OVER NICKEL |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulation Resistance | 5000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | GLASS FILLED POLYESTER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.1inch |
| Mating Contact Row Spacing | 0.1inch |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 2.54mm |
| Plating Thickness | 10u inch |
| Polarization Key | POLARIZATION NOTCH |
| Terminal Length | 0.165inch |
| Terminal Pitch | 2.54mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 18 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
Where can I find the TST-109-02-L-D datasheet?
TST-109-02-L-D Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TST-109-02-L-D?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What pin count and pitch does the TST-109-02-L-D offer for ribbon cable connections?
The TST-109-02-L-D is an 18-position dual-row header with a 0.100 inch (2.54 mm) pitch and a body length of 1.2 inches. The dual-row layout provides 9 pins per row, compatible with standard 18-conductor IDC ribbon cables used in industrial control and embedded I/O applications running at 3.3 V, 5 V, or 12 V logic levels.
How does the shroud on the TST-109-02-L-D improve reliability in field-service environments?
The full plastic shroud prevents mis-mating and protects the gold-over-nickel male contacts from physical damage during cable insertion and removal cycles. This is especially valuable in industrial control cabinets where technicians may work in low-visibility conditions, reducing the risk of bent pins or reversed connectors on 5 V and 12 V signal lines.
What contact finish does the TST-109-02-L-D use, and how does this affect long-term connectivity?
The mating contacts are finished with 10 µin gold over nickel, providing stable contact resistance typically below 20 milliohms, while the termination end uses Tin with a Nickel barrier for robust wave or hand soldering. This dual-finish approach ensures reliable performance across operating temperatures from -55°C to +125°C and over thousands of mating cycles.
Can the TST-109-02-L-D be used as a lower-cost alternative to Molex or Amphenol 2.54 mm shrouded headers?
Yes, the TST-109-02-L-D is dimensionally compatible with standard 18-pin 2.54 mm pitch dual-row shrouded headers from Molex (70246 series) and Amphenol (MTSW series), sharing the same 0.100 inch pin grid and IDC mating interface. Switching to SAMTEC TST series typically preserves PCB footprint compatibility while offering gold-plated mating contacts and a listed YTEOL of 9.1 years estimated lifecycle.
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About SAMTEC
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.1900 | $3.19 |
| 500+ | $2.0800 | $1040.00 |
| 1000+ | $1.6400 | $1640.00 |
| 2000+ | $1.3819 | $2763.86 |
| 5000+ | $1.1305 | $5652.70 |
| 10000+ | $0.8679 | $8678.60 |
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