TSM-121-01-FM-DH-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-01-FM-DH-P-TR is a 42-position, 0.100 inch pitch dual-row surface mount terminal strip with female contacts, flush mount SMT termination, polarizing features, and tape-and-reel packaging for reliable automated PCB assembly in board-to-board applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TSM-121-01-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-121-01-FM-DH-P-TR?
- 42 positions in dual-row layout (21 per row) at 0.100" (2.54 mm) standard pitch
- Female contact (FM) flush-mount configuration for low-profile SMT board-to-board interconnection
- Polarizing (P) feature enforces correct mating orientation and prevents mis-insertion
- Dual-row high-profile (DH) body for increased position count in a minimal board footprint
- Tape-and-reel (TR) packaging for automated pick-and-place SMT production compatibility
- Compatible with standard SAMTEC male header counterparts at 0.100" pitch
What is TSM-121-01-FM-DH-P-TR used for?
The TSM-121-01-FM-DH-P-TR is used in board-to-board interconnect designs for embedded systems, industrial controller daughter cards, and PCB stack-up assemblies where 42 signals must be routed through a polarized, surface-mount dual-row connector at standard 0.100 inch pitch. The flush-mount female contact and polarizing key make it appropriate for applications that require both assembly accuracy and a low-profile mated height in constrained enclosures.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-121-01-FM-DH-P-TR datasheet?
TSM-121-01-FM-DH-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-01-FM-DH-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What distinguishes the FM (flush-mount) contact style in TSM-121-01-FM-DH-P-TR from standard TSM-series female contacts?
The FM (flush-mount) designation in TSM-121-01-FM-DH-P-TR indicates that the female contacts are recessed to sit flush with the connector housing, reducing the mated profile height compared to standard female contact variants. This feature is valuable when PCB-to-PCB clearance is limited in 42-position dual-row SMT stack designs with strict vertical space budgets.
How does the polarizing feature of the TSM-121-01-FM-DH-P-TR reduce assembly defects in production?
The polarizing (P) feature on the TSM-121-01-FM-DH-P-TR adds a physical keying element that prevents the connector from mating in the wrong orientation. For a 42-position dual-row connector at 0.100 inch pitch, this eliminates the risk of reversed insertion that could damage all 42 contacts or create wiring faults in embedded or industrial PCB assemblies during automated or manual assembly.
Is the TSM-121-01-FM-DH-P-TR suitable for designs that need to meet RoHS compliance requirements?
SAMTEC's TSM-series surface mount terminal strips, including the TSM-121-01-FM-DH-P-TR, are manufactured as lead-free, RoHS-compliant components suitable for reflow soldering at standard peak temperatures up to 260°C. Buyers should request the RoHS declaration of conformity from SAMTEC or an authorized distributor when formal documentation is required for product certification.
For a 42-signal daughter-card design, when should a buyer choose TSM-121-01-FM-DH-P-TR versus a board-to-board connector with a smaller pitch?
The TSM-121-01-FM-DH-P-TR at 0.100 inch (2.54 mm) pitch is best selected when the design priority is compatibility with through-hole or standard SMT 0.100 inch ecosystems, lower cost per position, or ease of hand rework on 42 positions. A finer-pitch connector (such as 0.80 mm or 0.50 mm) is preferred when PCB real estate is severely limited and the assembly process supports fine-pitch SMT reliably.
What is the expected availability and ordering format for TSM-121-01-FM-DH-P-TR in production quantities?
The TSM-121-01-FM-DH-P-TR is available in tape-and-reel (TR) packaging, making it directly compatible with surface-mount production lines using automated pick-and-place equipment for 42-position dual-row connectors. Procurement teams should plan for SAMTEC standard factory lead times of approximately 8 to 12 weeks and qualify at least one alternate authorized distributor to mitigate supply risk on specialty SMT connectors.
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