TST-102-04-G-D SAMTEC Connector (Other) In Stock
SAMTEC TST-102-04-G-D is a 4-position dual-row shrouded PCB header at 2.54 mm (0.100") pitch with gold-plated contacts, designed for low-position-count cable-to-board mating in compact embedded and industrial applications. The shrouded housing provides polarization to prevent reverse cable insertion while protecting the pin field from mechanical damage. Available in stock globally from authorized distributors.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- TST-102-04-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-102-04-G-D?
- 4-position dual-row shrouded header at 2.54 mm pitch with polarized housing prevents reverse cable insertion and protects the 4-pin field from mechanical damage
- Gold-plated contact finish (G) delivers low contact resistance and superior corrosion resistance for reliable signal performance in industrial environments
- Through-hole termination provides robust mechanical anchoring to the PCB, withstanding cable pull and vibration forces in field-wired cable-to-board connections
What is TST-102-04-G-D used for?
The TST-102-04-G-D is used in compact cable-to-board interfaces on microcontroller boards, sensor modules, and industrial I/O cards where only 4 signals or power lines need to be routed to an off-board cable harness. Its polarized shroud ensures correct cable orientation during field installation, reducing wiring errors in 4-wire interfaces such as SPI, I2C, UART, or small power connections. The gold-plated contacts make it suitable for low-voltage logic levels and analog sensor signals where stable, low-noise connectivity is required.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TST-102-04-G-D datasheet?
TST-102-04-G-D Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TST-102-04-G-D?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
For a 4-wire SPI or I2C interface on a sensor module, what advantages does the TST-102-04-G-D's shrouded design offer over open-pin headers?
The TST-102-04-G-D's polarized shroud ensures the mating cable can only seat in the correct orientation, preventing reversed SCK, MOSI, MISO, and CS or SDA/SCL connections that would damage the sensor or microcontroller. The shroud also physically protects the 4 gold-plated pins from accidental bending during board handling and cable swapping, extending connector service life in prototype and low-volume production environments.
What contact finish does the TST-102-04-G-D use and how does this compare to tin-plated alternatives for analog sensor signals?
The TST-102-04-G-D uses a gold (G) contact finish, typically 10 µin to 30 µin gold over nickel, delivering initial contact resistance below 10 mΩ and excellent corrosion resistance. Compared to tin-plated contacts, gold maintains stable resistance even at low normal forces and in humid environments—important for analog sensor signals where a 5 mΩ to 10 mΩ resistance difference at 1 mA signal current would cause 5 µV to 10 µV of noise voltage, degrading precision measurements.
When does a designer choose the dual-row TST-102-04-G-D over a single-row 4-position header for a compact embedded board layout?
A dual-row 2x2 configuration like the TST-102-04-G-D reduces the connector body length from approximately 10.16 mm (4-position single row at 2.54 mm pitch) to a roughly 5.08 mm × 5.08 mm square footprint. This compact 2x2 layout is preferred when PCB edge space is limited to under 8 mm in one axis, or when the cable harness routes straight off the board end rather than along its length—common in small sensor nodes and USB peripheral boards.
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