TST-102-02-L-D SAMTEC Connector (Other) In Stock
SAMTEC TST-102-02-L-D is a 4-position dual-row shrouded PCB header with 0.100 inch (2.54 mm) pitch, featuring gold-over-nickel mating contacts and male square-pin termination for reliable board-to-board connectivity. Its compact 0.5 inch body length and tin-nickel termination finish ensure secure and low-resistance interconnection. Ideal for test interfaces, embedded computing modules, and prototyping boards requiring robust 4-pin dual-row mating.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- TST-102-02-L-D Datasheet PDF
- Category
- Connector
- Price
- From $0.9610(MOQ 2500)
- 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-102-02-L-D?
- 4-position dual-row layout on 0.100 inch (2.54 mm) pitch for compact board-to-board signal interconnection
- Gold (10 µin) over nickel contact plating for low contact resistance and extended mating cycle durability
- Shrouded housing providing polarization and mechanical protection for square-pin male contacts during assembly
- Tin-nickel barrier termination finish ensuring reliable solder joint formation on PCB pads
- Compact 0.5 inch body length fitting dense prototyping and test interface board layouts
What is TST-102-02-L-D used for?
The TST-102-02-L-D is commonly used as a test access point header and board-to-board signal interface in embedded computing modules, prototyping breakout boards, and JTAG or SWD debug interfaces that require a 4-position shrouded connector with reliable gold-plated contacts. Its compact 0.365 inch body width and polarized shroud prevent mis-mating during repeated test probe insertions in production board testing environments. The connector is also selected for small sensor modules and IoT edge nodes where a 4-pin dual-row 2.54 mm pitch header provides a standard interface for I2C, SPI, or UART harness cables.
What are the specifications of TST-102-02-L-D?
| YTEOL | 9.1 |
| Body Breadth | 0.365inch |
| Body Depth | 0.365inch |
| Body Length | 0.5inch |
| 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 | 4 |
| 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-102-02-L-D datasheet?
TST-102-02-L-D Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TST-102-02-L-D?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact plating does the TST-102-02-L-D use, and how many mating cycles does gold plating typically support?
The TST-102-02-L-D uses 10 microinch gold over nickel plating on the mating contact surfaces, which is a standard finish for connectors requiring at least 100 mating cycles of reliable low-resistance contact. Gold plating prevents oxide buildup that would increase contact resistance over time, making this connector suitable for debug headers and test access points where cables are inserted and removed many times during product development and production testing phases.
How does the shrouded housing of the TST-102-02-L-D protect contacts during PCB assembly and field use?
The TST-102-02-L-D shroud encloses the 4 male square pins within a 0.365 inch x 0.5 inch housing, protecting them from solder splash during wave soldering and from mechanical damage during PCB handling and shipping. The shroud also acts as a polarization key, ensuring the mating cable connector can only be inserted in the correct orientation, which eliminates the risk of reversing a 3.3 V power or SWD clock signal in a debug interface that would otherwise damage the target microcontroller.
What current rating can the TST-102-02-L-D support per contact for mixed power and signal applications?
SAMTEC's TST-series 0.100 inch pitch square-pin connectors typically support a current rating of 1 A per contact at room temperature. For the TST-102-02-L-D with 4 positions, this means up to 4 A total can be carried if all pins are used for power, or individual pins can carry a mix of 3.3 V or 5 V logic signals alongside a ground return within the same 4-pin connector body, making it practical for compact sensor module interfaces combining I2C data lines and a low-current power supply rail.
Why would an engineer choose TST-102-02-L-D over an unshrouded header for a JTAG debug port on a production board?
An unshrouded 4-pin header can be mated in either orientation, which means a JTAG cable plugged in reversed applies VTREF to TMS or TDI, potentially damaging the target device. The TST-102-02-L-D's 0.365 inch wide shroud with polarization slot physically prevents reverse insertion, reducing the risk of board damage to zero for a 4-position 0.100 inch pitch JTAG or SWD interface. This protection is especially valuable in production lines where multiple operators service boards and connection mistakes would cause costly rework.
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About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 2500+ | $1.2330 | $3082.50 |
| 5000+ | $0.9870 | $4935.00 |
| 7500+ | $0.9610 | $7207.50 |
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