TST-102-04-S-D SAMTEC Connector (Other) In Stock
SAMTEC TST-102-04-S-D is a 4-position dual-row shrouded PCB header with 0.100" pitch and silver-plated contacts. Designed for low-profile wire-to-board and board-to-board applications, it provides polarized mating with up to 1 A per contact current capacity. Widely available from global distributors with worldwide shipping at competitive prices.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- TST-102-04-S-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-S-D?
- 4-position dual-row shrouded header on 0.100" (2.54 mm) pitch for compact polarized wire-to-board interconnects
- Silver-plated (S suffix) contacts offer low contact resistance below 20 mΩ for efficient current transfer at up to 1 A per contact
- Polarizing shroud prevents reversed cable insertion to protect sensitive circuits in prototyping and production designs
What is TST-102-04-S-D used for?
The TST-102-04-S-D is commonly used in embedded development boards, sensor interface circuits, and low-profile wire-to-board connections in consumer and industrial electronics where a compact 4-position dual-row header is needed. Its shrouded design simplifies field wiring for technicians connecting small cable harnesses to power modules, I2C sensor breakouts, and UART debug interfaces. The 0.100" pitch makes it compatible with standard breadboard ribbon cables and IDC connectors widely used in prototyping and low-volume production environments.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TST-102-04-S-D datasheet?
TST-102-04-S-D Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TST-102-04-S-D?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the silver plating on the TST-102-04-S-D contacts affect conductivity compared to gold-plated alternatives?
Silver-plated (S suffix) contacts on the TST-102-04-S-D have a bulk resistivity only slightly higher than gold, maintaining contact resistance below 20 mΩ at low current levels up to 1 A per contact. While gold plating resists oxidation better in humid or corrosive environments, silver plating provides adequate performance for indoor electronics and prototyping environments, and is a cost-effective choice when 100 or fewer mating cycles are expected across the 4-position interface.
What cable-side connectors are compatible with the TST-102-04-S-D on 0.100" dual-row pitch for a ribbon cable assembly?
The TST-102-04-S-D on 0.100" (2.54 mm) dual-row pitch accepts standard 4-position IDC crimp connectors for 28 AWG flat ribbon cable, as well as SAMTEC's FFSD or equivalent discrete wire housing assemblies with 2 x 2 contact arrangement. The shrouded header enforces correct orientation so the cable-side IDC connector seats fully, preventing single-row or reversed insertion that could mis-assign the power and ground pins rated at 1 A each.
In a 3.3 V I2C or UART debug port, what current capacity do the 4 contacts of TST-102-04-S-D provide for power and signal pins together?
Each contact in the TST-102-04-S-D is rated for 1 A at 30 V maximum, so across 4 contacts the connector supports up to 4 A total. In a typical 3.3 V UART debug header using 2 contacts for signal (TXD/RXD, each drawing under 10 mA) and 2 contacts for power and ground, the remaining current headroom allows the same connector to simultaneously supply up to 2 A at 3.3 V to the target board — adequate for powering a low-power microcontroller and peripherals through the debug cable.
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