TSM-123-02-FM-DH-P-TR SAMTEC Connector (Other) In Stock
The TSM-123-02-FM-DH-P-TR is a 46-position dual-row surface-mount terminal strip from SAMTEC with a 0.100" (2.54 mm) pitch, flat-mount (FM) lead style, and polarized (-P) keying to prevent mis-insertion. Supplied in tape-and-reel packaging for high-volume automated SMT assembly, it serves industrial control boards, embedded computing systems, and instrumentation requiring reliable high-density dual-row connectivity.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Datasheet
- TSM-123-02-FM-DH-P-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-123-02-FM-DH-P-TR?
- 46 positions in dual-row layout at 0.100" (2.54 mm) pitch for high signal density on a standard-pitch footprint
- Flat-mount (FM) lead style allowing the connector to sit flush with the PCB surface for minimal height profile
- Polarized (-P) keying preventing reverse-mating and incorrect connector insertion on boards with multiple adjacent headers
- Tape-and-reel (-TR) packaging for seamless integration into automated SMT pick-and-place assembly lines
- Dual-in-line header (DH) format compatible with standard 0.100" pitch dual-row female sockets and receptacles
What is TSM-123-02-FM-DH-P-TR used for?
The TSM-123-02-FM-DH-P-TR is optimized for high-density dual-row board-to-board and board-to-cable interconnects in embedded computing modules, industrial fieldbus interface cards, and programmable logic controller I/O expansion boards where 46-pin connectivity at standard 0.100" pitch is required. Its flat-mount profile and polarized keying suit multi-connector PCB assemblies in process control and data acquisition equipment, ensuring correct assembly orientation while minimizing connector height above the board surface.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-123-02-FM-DH-P-TR datasheet?
TSM-123-02-FM-DH-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-123-02-FM-DH-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the flat-mount (FM) lead style on TSM-123-02-FM-DH-P-TR affect PCB clearance compared to a standard upright SMT pin?
The flat-mount (FM) lead style bends the solder tails horizontally before they contact the board pads, reducing the overall connector height above the PCB by approximately 1 mm to 2 mm compared to straight-pin SMT versions. This profile suits enclosures with tight internal height constraints, such as industrial DIN-rail modules or compact embedded controller housings where a 46-pin dual-row connector at 0.100" (2.54 mm) pitch must not protrude above adjacent component heights.
When does a 46-position count make TSM-123-02-FM-DH-P-TR a better fit than a 56- or 60-position SAMTEC strip for an embedded I/O application?
A 46-pin dual-row header at 0.100" (2.54 mm) pitch covers common embedded bus widths such as a 32-bit address or data bus plus power, ground, and control signals without the extra 10 to 14 pins added by TSM-128 or TSM-130 series connectors. Choosing TSM-123-02-FM-DH-P-TR shortens the connector body by approximately 12.7 mm versus a 60-position version, freeing board space along the connector edge for adjacent components on constrained PCB layouts.
How does polarized keying on TSM-123-02-FM-DH-P-TR reduce assembly defects in boards with multiple dual-row headers?
The -P polarized keying introduces an asymmetric blocking feature that prevents the mating 46-position female connector from being inserted rotated 180 degrees or plugged into a physically adjacent header with a different key position. On PCBs with 3 or more dual-row 0.100" headers placed within 10 mm of each other, this keying prevents cross-connector errors that could feed 5 V signals into 3.3 V rails or reverse power and ground connections across 46 pins simultaneously.
What current-carrying capacity should engineers plan for when sharing power and signal pins across TSM-123-02-FM-DH-P-TR in an industrial I/O module?
SAMTEC TSM series contacts at 0.100" pitch carry a nominal 1 A per pin in free air at 25°C. For an industrial I/O board with a 24 V power rail, designers typically dedicate 3 to 4 adjacent pins in parallel for 3 A to 4 A power delivery, leaving the remaining 42 to 43 positions for signal, ground, and bus lines. Keeping power-carrying pins to no more than 30% of the 46-position connector preserves connector temperature rise below 30°C above ambient.
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