TSM-128-01-FM-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-128-01-FM-DH-A-K-TR is a 56-position dual-row surface mount terminal strip with 2.54 mm pitch, featuring flush-mount (FM), dual-height (DH) contact geometry, surface-mount solder tail (A), polarization key (K), and tape-and-reel packaging for automated PCB assembly.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 56 positions in a 2 × 28 dual-row layout with 2.54 mm (0.100 inch) standard pitch for high-density board-to-board connectivity
- Flush-mount (FM) design ensures the connector sits level with the PCB surface, critical for low-clearance enclosure designs
- Dual-height (DH) contact option accommodates mating connectors with different stack heights in a single footprint
- Polarization key (K) prevents incorrect mating insertion, protecting circuits with up to 3 A per pin rated contacts
- Tape-and-reel (TR) packaging supports automated SMT pick-and-place assembly for high-volume production efficiency
Applications
The TSM-128-01-FM-DH-A-K-TR serves as a dense 56-pin SMT board-to-board connector for embedded computing modules, FPGAs, and DSP carrier boards that require reliable 2.54 mm pitch interconnects in tight PCB stack configurations. Its flush-mount geometry is particularly valuable in ruggedized industrial controllers and portable instruments where the connector must sit below the top component height for lid clearance. The dual-height contact and polarization key combination simplifies system integration in multi-card chassis assemblies.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the FM (flush-mount) designation mean for PCB layout and mechanical clearance of the TSM-128-01-FM-DH-A-K-TR?
The FM (flush-mount) suffix means the connector body sits flush against the PCB surface, with an above-board height of approximately 2.0 mm or less. This is 3 mm lower than standard-height TSM variants, enabling the connector to fit inside enclosures with less than 5 mm clearance above the board—critical for embedded SoM (System-on-Module) and compact industrial designs.
How many signal and power pins can the TSM-128-01-FM-DH-A-K-TR carry, and at what current rating?
The TSM-128-01-FM-DH-A-K-TR provides 56 pins in a 2 × 28 dual-row arrangement, each rated for up to 3 A of current. This allows designers to dedicate several pins to 3.3 V or 5 V power rails while routing the remaining pins as differential signal pairs or GPIO signals at standard logic levels.
How does the dual-height (DH) contact option affect mating connector selection for the TSM-128-01-FM-DH-A-K-TR?
The DH (dual-height) contact is machined with two distinct engagement heights—typically 2.54 mm and 4.06 mm—allowing the TSM-128-01-FM-DH-A-K-TR to mate with both short-stack and tall-stack connector housings on a compatible receptacle. This flexibility eliminates the need to stock two separate connector SKUs when the board-to-board spacing varies by up to 1.5 mm across different product revisions.
Which SAMTEC receptacle families are compatible with the TSM-128-01-FM-DH-A-K-TR for a complete board-to-board assembly?
The TSM-128-01-FM-DH-A-K-TR is designed to mate with SAMTEC SSM (Surface Mount Socket) and SFM series receptacles with 56-position 2 × 28 dual-row 2.54 mm pitch layouts. Confirm the mating height (board-to-board spacing) by selecting the SSM stack height option—available in 6 mm, 8 mm, and 11 mm—that matches the DH contact engagement length of the TSM-128-01-FM-DH-A-K-TR.
Related Guides
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
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 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
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”