SEAM-40-03.5-S-04-1-A-K-TR SAMTEC Connector (Other) In Stock
The SEAM-40-03.5-S-04-1-A-K-TR is a Samtec SEARAY 160-position high-speed, high-density open-pin-field array terminal in a 0.050" pitch board-stacking connector. It features 15 mΩ contact resistance, 725 VAC dielectric withstanding voltage, and tin-over-nickel contact finish for robust signal integrity. Available worldwide with in-stock inventory for high-speed digital designs.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 160
- Lifecycle
- ACTIVE
- Category
- Connector
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 160-position open-pin-field array on 0.050" pitch enabling flexible signal routing without fixed pin assignments
- 15 mΩ contact resistance and 725 VAC dielectric withstanding voltage for high-integrity high-speed board stacking
- Tin (Sn) over Nickel (Ni) contact finish on a 2.196 inch body for reliable mating in demanding environments
Applications
The SEAM-40-03.5-S-04-1-A-K-TR SEARAY connector is used in high-speed FPGA daughter-card interconnects, mezzanine card backplane systems, and test-and-measurement instrument modules where 160 signal lanes at 0.050-inch pitch minimize board area while supporting multi-gigabit data rates. Its open-pin-field design allows engineers to freely assign differential pairs, power, and ground pins to match the signal map of each design. The 725 VAC dielectric withstanding voltage adds margin for industrial and telecommunications infrastructure boards.
Specifications
| YTEOL | 9 |
| Body Breadth | 0.278inch |
| Body Depth | 0.28inch |
| Body Length | 2.196inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Resistance | 15mΩ |
| Contact Style | CENTRONIC |
| Dielectric Withstanding Voltage | 725VAC V |
| Filter Feature | NO |
| Insulation Resistance | 15000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| Mating Contact Pitch | 0.05inch |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 4 |
| Number of Rows Loaded | 4 |
| Option | GENERAL PURPOSE |
| PCB Contact Row Spacing | 1.27mm |
| Plating Thickness | 30u inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 2.7A |
| Reference Standard | UL |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 160 |
| UL Flammability Code | 94V-0 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Malaysia, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact resistance does the SEAM-40-03.5-S-04-1-A-K-TR specify, and why does that matter for high-speed links?
The SEAM-40-03.5-S-04-1-A-K-TR specifies a contact resistance of 15 mΩ per pin. At multi-gigabit data rates, low contact resistance reduces signal attenuation and voltage drop across the connector, preserving eye-diagram margin on differential pairs such as PCIe, SATA, or custom LVDS buses routed through the 160-pin open-pin-field array.
How does the open-pin-field design of the SEAM-40-03.5-S-04-1-A-K-TR help with signal assignment on an FPGA daughter card?
Unlike connectors with fixed signal assignments, the SEAM-40-03.5-S-04-1-A-K-TR allows engineers to freely place differential pairs, single-ended signals, power rails, and ground returns anywhere across its 160 positions. This flexibility means the PCB routing from FPGA I/O banks to the connector body can follow the shortest path, reducing trace length by 10–20 mm on a typical mezzanine card and lowering stub-induced reflections at frequencies above 1 GHz.
When is the SEAM-40-03.5-S-04-1-A-K-TR a better choice than a standard 2 mm pitch board-stacking connector for the same pin count?
The SEAM-40-03.5-S-04-1-A-K-TR carries 160 signals in a body that is 2.196 inches long on 0.050-inch pitch, compared to a 2 mm pitch connector of the same count that would span roughly 160 mm. The tighter pitch frees PCB area for components, reduces the stub length between board planes, and supports higher-frequency signaling — making it the preferred choice when board real estate is limited or when data rates exceed 1 Gbps per lane.
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