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
What are the key features of TSM-128-01-FM-DH-A-K-TR?
- 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
What is TSM-128-01-FM-DH-A-K-TR used for?
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) |
Where can I find the TSM-128-01-FM-DH-A-K-TR datasheet?
TSM-128-01-FM-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-128-01-FM-DH-A-K-TR?
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.
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