TMM-108-01-L-S-SM SAMTEC Connector (Header, Unshrouded - Single Row Staggered SMD Pin) In Stock
Samtec TMM-108-01-L-S-SM is an 8-contact single-row SMD board-to-board header from the TMM series with 2 mm pitch. Features gold-over-nickel contact finish for reliable mating and matte tin termination for solderability. Compact surface-mount design suits high-density PCB interconnect applications.
- Manufacturer
- SAMTEC
- Package
- Header, Unshrouded - Single Row Staggered SMD Pin
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TMM-108-01-L-S-SM Datasheet PDF
- 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
- 8-contact single-row surface-mount header with 2 mm pitch providing compact board-to-board signal interface in a minimal PCB footprint
- Gold (10 µin) over nickel (50 µin) contact mating finish ensuring low contact resistance and reliable mating over thousands of cycles
- Staggered SMD pin layout improving solder joint stability and mechanical retention during reflow and in-service vibration
Applications
The TMM-108-01-L-S-SM is designed for single-row board-to-board and board-to-wire interconnects in compact electronics requiring 8 signal or power connections at a 2 mm pitch. Its surface-mount staggered pin design makes it suitable for automated PCB assembly in portable instrumentation, embedded control boards, and sensor interface modules. The gold-plated contacts provide long-term signal integrity for applications subject to repeated mating cycles or light environmental exposure.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 2 Weeks, 5 Days |
| YTEOL | 8 |
| Body Breadth | 0.078inch |
| Body Depth | 0.109inch |
| Body Length | 0.63inch |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD (10) OVER NICKEL (50) |
| Contact Finish Termination | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 15mΩ |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Dielectric Withstanding Voltage | 1050VAC V |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulation Resistance | 5000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.079inch |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| 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 | 1 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | STAGGERED |
| PCB Contact Row Spacing | 2.03mm |
| Plating Thickness | 10u inch |
| Rated Current (Signal) | 3.3A |
| Reference Standard | UL |
| Terminal Pitch | 4mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 8 |
| UL Flammability Code | 94V-0 |
| Package | Header, Unshrouded - Single Row Staggered SMD Pin |
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 are the contact specifications of the TMM-108-01-L-S-SM in terms of count, pitch, and finish?
The TMM-108-01-L-S-SM has 8 contacts in a single row at a 2 mm pitch. Mating contacts are finished with 10 microinches of gold over 50 microinches of nickel for corrosion resistance and low contact resistance, while the PCB termination uses matte tin over a nickel barrier for reliable soldering.
How does the staggered SMD pin design of the TMM-108-01-L-S-SM improve board assembly reliability?
The staggered pin layout distributes solder joints along two offset rows, increasing the mechanical footprint and reducing stress concentration at any single joint during thermal cycling from -55 degrees C to 125 degrees C. This improves solder joint fatigue life compared to a standard in-line SMD pin arrangement, especially in applications exposed to vibration or repeated thermal cycles.
When is the 2 mm pitch TMM-108-01-L-S-SM a better choice than a 2.54 mm pitch alternative for 8-pin interfaces?
The 2 mm pitch TMM-108-01-L-S-SM reduces the connector body length by approximately 20 percent compared to an 8-pin 2.54 mm pitch header of the same contact count, freeing about 4 mm of PCB board length. This space saving is significant in compact handheld devices, wearables, and sub-board modules where every millimeter of PCB area is cost-critical.
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