SMH-135-02-FM-S-TR SAMTEC Connector (Other) In Stock
SAMTEC SMH-135-02-FM-S-TR is a .100" pitch horizontal surface mount socket strip with 35 positions per row and 2 rows, featuring a friction-lock mating interface. It provides 70 total contacts for reliable board-to-board interconnection using SMT termination and tape and reel packaging for automated assembly.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 35
- Lifecycle
- ACTIVE
- Datasheet
- SMH-135-02-FM-S-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SMH-135-02-FM-S-TR?
- Friction-lock (-FM) mating mechanism prevents unintentional connector disengagement in vibration-prone industrial environments
- 70 total contacts in a dual-row 0.100" (2.54 mm) pitch layout supports high pin-count board-to-board signal and power routing
- Horizontal surface mount orientation reduces vertical stack height for low-profile PCB assemblies
- Tape and reel (-TR) packaging enables high-throughput automated pick-and-place SMT assembly
What is SMH-135-02-FM-S-TR used for?
The SMH-135-02-FM-S-TR is designed for high-density board-to-board and module interconnection in industrial control systems, embedded computing platforms, and test and measurement equipment. The friction-lock feature makes it appropriate for applications subject to mechanical vibration, such as motor drives or rugged field instruments. Its 70-pin dual-row configuration supports both digital data buses and power distribution across daughtercard-to-mainboard interfaces.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SMH-135-02-FM-S-TR datasheet?
SMH-135-02-FM-S-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SMH-135-02-FM-S-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many total contact positions does the SMH-135-02-FM-S-TR provide, and what is the row configuration?
The SMH-135-02-FM-S-TR offers 70 total contact positions arranged in 2 rows of 35, on a 0.100" (2.54 mm) pitch. This high pin count enables simultaneous routing of multiple data buses and power rails between stacked PCBs in a single connector footprint.
What does the FM designation mean for the SMH-135-02-FM-S-TR and when should it be chosen over a standard socket?
FM stands for friction-lock mating, which adds a retention feature that requires deliberate force to unmating the connector. This is essential for applications experiencing vibration levels above 5 G or shock events, such as industrial machinery, automotive test fixtures, or field-deployed instrumentation where accidental disconnection would cause system failure.
How does SMT termination on the SMH-135-02-FM-S-TR compare to through-hole versions for structural reliability?
Surface mount termination on the SMH-135-02-FM-S-TR forms solder fillets on pads rather than through-hole barrels, which is sufficient for mating forces typical of a 2.54 mm pitch socket. SMT mounting avoids drilling 70 plated holes, reducing PCB cost, and the -TR tape and reel format supports reflow soldering with typical solder paste deposits of 0.15 mm thickness.
For a backplane design with multiple daughter cards, how does the dual-row 70-pin SMH-135-02-FM-S-TR compare to a single-row equivalent?
The dual-row 70-pin SMH-135-02-FM-S-TR provides twice the contact density of a single-row 35-pin connector in the same 88.9 mm mating length at 2.54 mm pitch. This doubles available signal and power pins without increasing the connector footprint along the card edge, which is critical when backplane real estate is limited to under 100 mm per slot.
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