TST-102-03-L-D SAMTEC Connector (Other) In Stock
TST-102-03-L-D is a 4-position, dual-row, 0.100" pitch shrouded PCB header from Samtec featuring gold-over-nickel mating contacts and tin-nickel termination. The 0.5 inch body length and 0.365 inch breadth deliver reliable board-to-board or board-to-cable connections with polarization protection.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- TST-102-03-L-D Datasheet PDF
- Category
- Connector
- Price
- From $1.0300(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-102-03-L-D?
- 4-position dual-row 0.100" pitch layout with shroud for polarized, error-proof mating
- Gold (10µin) over Nickel mating contacts for low contact resistance and high mating-cycle durability
- Tin (Sn) over Nickel termination for cost-effective wave or hand-soldering to PCB pads
- Compact 0.5 inch body length fits high-density inter-board connection applications
What is TST-102-03-L-D used for?
The TST-102-03-L-D is used in embedded computing modules, industrial automation boards, and consumer electronics assemblies that require reliable 4-pin, 0.100" pitch board-to-cable interconnects with polarized mating. Its shroud prevents reversed insertions during field assembly or maintenance, reducing rework and connector damage on production lines. The gold mating surface ensures consistent contact resistance below 20 milliohms over hundreds of mating cycles, making it a dependable choice for signal and low-voltage power connections in rack-mount instruments and test-and-measurement equipment.
What are the specifications of TST-102-03-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 | 0.565inch |
| 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-102-03-L-D datasheet?
TST-102-03-L-D Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TST-102-03-L-D?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why does the TST-102-03-L-D use gold mating contacts instead of tin for a 4-position shrouded header?
Gold (10 microinch) over Nickel mating contacts maintain a contact resistance below 20 milliohms even after 500 or more mating cycles and prevent the tin-oxide film buildup that degrades tin-to-tin interfaces over time. For signal-level connections in sensor conditioning, data-acquisition, or test-equipment applications where a few hundred milliohms of contact resistance would corrupt low-level measurements, gold contacts are the correct choice despite the higher per-unit cost compared to an all-tin alternative.
How does the shroud on the TST-102-03-L-D prevent assembly errors on high-volume PCB production lines?
The plastic shroud on the TST-102-03-L-D physically constrains the mating cable connector to a single correct orientation, preventing 180-degree reversed insertions that would apply reverse voltage to downstream circuits. On a line assembling 1000 boards per day, even a 0.1% reversal rate translates to 1 potential board failure per day; the polarized shroud eliminates this failure mode with no firmware change or additional inspection step, improving first-pass yield.
For a compact motor-control PCB needing a 4-wire interface, how much board area does the TST-102-03-L-D footprint require?
The TST-102-03-L-D body is 0.5 inch long by 0.365 inch wide (approximately 12.7mm × 9.27mm), with through-hole pins on a 0.100" (2.54mm) grid. The courtyard for the mated pair and any clearance to adjacent components is approximately 15mm × 12mm, which is smaller than an equivalent terminal block for the same 4-position count, making it suitable for space-constrained motor-drive interface PCBs where connector density is critical.
How does the tin termination on TST-102-03-L-D simplify soldering compared to gold-terminated through-hole pins?
Tin (Sn) over Nickel termination on the TST-102-03-L-D pins is compatible with standard Sn63/Pb37 or SAC305 lead-free solder alloys, wetting reliably at typical reflow and wave-solder temperatures of 230-260°C without flux activation issues. Gold-terminated pins require complete dissolution of the gold layer to avoid gold-tin embrittlement, which demands tighter solder-volume control; tin-terminated pins eliminate this failure mode for through-hole soldering processes.
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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+ | $1.3200 | $3300.00 |
| 5000+ | $1.0500 | $5250.00 |
| 7500+ | $1.0300 | $7725.00 |
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