HTSS-128-01-SM-DV SAMTEC Connector (Other) In Stock
The SAMTEC HTSS-128-01-SM-DV is a 56-position high-temperature shrouded terminal strip with 0.100 inch pitch in a dual-voltage cable-mate configuration, designed for demanding cable-to-board interconnect applications in industrial and defense electronics. Its surface-mount (SM) termination style and high-temperature housing ensure reliable performance in elevated thermal environments above 85°C. RoHS-compliant construction suits high-reliability PCB assemblies.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Datasheet
- HTSS-128-01-SM-DV Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of HTSS-128-01-SM-DV?
- 56-position dual-row shrouded terminal strip on 0.100 inch (2.54 mm) pitch enabling high-density cable-to-board signal routing in a single connector
- High-temperature housing material rated for continuous operation at ambient temperatures up to 125°C for use near heat-generating power components
- Surface-mount (SM) termination style provides a low-profile PCB attachment suitable for automated SMT reflow soldering processes
- Dual-voltage (DV) configuration supports mixed-signal or split-supply cable harnesses in a single polarized mating interface
- Shrouded polarized housing prevents mis-mating of 56-pin cable assemblies, eliminating mis-wiring risk in high-pin-count harness connections
What is HTSS-128-01-SM-DV used for?
The HTSS-128-01-SM-DV is used in high-density cable-to-board interconnect applications within industrial automation controllers, defense electronics backplanes, and telecom switching equipment that require 56 signal lines managed through a single reliable connector. Its high-temperature-rated housing suits installation in enclosures where internal temperatures can reach 100°C or above, such as near drive electronics or power regulation stages. The surface-mount termination style enables reflow soldering integration on multi-layer PCBs with tight component density requirements.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the HTSS-128-01-SM-DV datasheet?
HTSS-128-01-SM-DV Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for HTSS-128-01-SM-DV?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the surface-mount termination of HTSS-128-01-SM-DV affect PCB assembly compared to through-hole alternatives?
The surface-mount (SM) termination of HTSS-128-01-SM-DV eliminates the need to drill 56 through-holes in the PCB, reducing board fabrication cost and allowing inner routing layers to run beneath the connector footprint without clearance violations. Reflow soldering of SM terminations also provides stronger shear resistance compared to hand-soldered through-hole pins, and the process is compatible with standard 245°C peak reflow profiles used in lead-free SMT production lines.
For a defense electronics backplane with 56 signal channels, what are the key reliability advantages of HTSS-128-01-SM-DV?
The HTSS-128-01-SM-DV provides a polarized shroud that enforces correct mating orientation across all 56 positions, preventing signal mis-assignment in safety-critical backplane wiring. Its high-temperature housing withstands ambient temperatures up to approximately 125°C, ensuring dimensional stability and pin retention during thermal cycling from -40°C to 125°C in defense system environments. Gold-plated contacts maintain contact resistance below 20 mΩ throughout the connector service life.
How long does HTSS-128-01-SM-DV span on a PCB, and what routing strategy is needed for 56 signals?
At 0.100 inch (2.54 mm) pitch with 28 positions per row in a dual-row layout, the HTSS-128-01-SM-DV spans approximately 2.8 inches (71.1 mm) in length. Routing 56 signals requires at least 2 dedicated PCB inner layers for complete fan-out when using 0.1 mm minimum trace width, or careful use of micro-vias on a 6-layer HDI board to achieve full breakout within the 71 mm connector length.
Is HTSS-128-01-SM-DV compatible with standard 56-pin IDC ribbon cable assemblies for rapid prototype wiring?
HTSS-128-01-SM-DV mates with standard 0.100 inch pitch IDC dual-row cable connectors and 56-conductor ribbon cables, which are widely stocked by major connector distributors. IDC cable assemblies for 56-pin dual-row headers are rated at 300 V and 1 A per conductor, suitable for prototype signal wiring. Verify the mating connector housing height to ensure at least 5 mm of cable clearance above the PCB surface after mating.
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