LSHM-140-04.0-L-DV-A-N-TR SAMTEC Connector (Other) In Stock
SAMTEC LSHM-140-04.0-L-DV-A-N-TR is a 80-position dual-row board stacking connector with 4.0 mm stack height and 0.050-inch pitch featuring gold-plated mating contacts. It mounts via PEG board retention for robust mechanical hold-down and ships tape-and-reel. Available globally with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 80
- 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
- 80-position dual-row board stacking connector at 4.0 mm stack height enables precise board separation in dense multi-board assemblies
- Gold-plated mating contacts with nickel barrier provide low contact resistance and corrosion resistance for high-reliability signal integrity
- PEG board mounting option delivers superior mechanical retention strength against vibration and shock in demanding environments
Applications
The LSHM-140-04.0-L-DV-A-N-TR is designed for high-density board-to-board stacking in compact embedded computing modules, FPGA mezzanine cards, and high-speed communications blades where 80 signals must span a precise 4.0 mm board separation. The gold mating contacts maintain reliable electrical performance across thousands of mating cycles, making it a strong choice for hot-swap compute modules and removable I/O daughtercards. PEG retention keeps the connector seated under vibration in mil-aero and industrial control chassis applications.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 2 Weeks, 3 Days |
| YTEOL | 8.68 |
| Board Mounting Option | PEG |
| Body Breadth | 0.196inch |
| Body Depth | 0.215inch |
| Body Length | 0.972inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD |
| Contact Finish Termination | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | HERMAPHRODITIC |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 15mΩ |
| Contact Style | BELLOWED TYPE |
| Dielectric Withstanding Voltage | 470VAC V |
| Durability | 100Cycles |
| Filter Feature | NO |
| Insulation Resistance | 1000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| Mating Contact Pitch | 0.02inch |
| 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 |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 3.7084mm |
| Plating Thickness | 10u inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 2A |
| Reference Standard | UL |
| Terminal Pitch | 0.508mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 80 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Costa Rica, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What stack height and contact count does LSHM-140-04.0-L-DV-A-N-TR provide for board stacking applications?
The LSHM-140-04.0-L-DV-A-N-TR provides a 4.0 mm board-to-board stack height with 80 total contacts arranged in 2 rows at 0.050-inch (1.27 mm) pitch. This combination allows engineers to pass 80 signals between two boards separated by exactly 4.0 mm, accommodating component height clearances on the mating board.
Why does the gold mating finish on LSHM-140-04.0-L-DV-A-N-TR matter for high-cycle or high-frequency applications?
The SAMTEC LSHM-140-04.0-L-DV-A-N-TR uses a gold contact finish on the mating interface, which maintains contact resistance below a few milliohms even after hundreds of mating cycles and resists oxidation in humid environments. For high-speed signals above 1 GHz, stable low-resistance contacts directly reduce insertion loss and reflections compared to tin-finished alternatives.
How does the PEG board mounting option on LSHM-140-04.0-L-DV-A-N-TR improve mechanical reliability versus standard SMT-only connectors?
The PEG mounting pegs on the LSHM-140-04.0-L-DV-A-N-TR anchor the connector body into drilled holes in the PCB, providing mechanical retention that resists up to several Newtons of pull-out or side-load force beyond what SMT solder pads alone can provide. This is critical in chassis assemblies subject to 5G to 500G shock profiles where unmated connectors can cause intermittent failures.
Related Guides
How to Choose a Digital Potentiometer: AD5204, AD5206, and AD8403 Selection Guide
Compare the AD5204, AD5206, and AD8403 multi-channel SPI digipots by channel count, resistance value, and package to choose the right Analog Devices digital potentiometer for your design.
Jun 21, 2026
AD7745 / AD7746 / AD7747 Capacitance-to-Digital Converter Design Guide
Complete application note for the AD774x CDC family: circuit design, shielding, conversion rate selection, and sourcing guidance for the AD7745, AD7746, and AD7747.
Jun 21, 2026
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
Why Buy from FindMyChip
About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”