TSM-109-02-TM-DH-A-K-TR SAMTEC Connector (Other) In Stock
Samtec TSM-109-02-TM-DH-A-K-TR is an 18-position dual-row surface-mount terminal strip with 0.100" (2.54 mm) pitch, dual-height locating posts, and a polarizing key for reliable board-to-board connectivity. Designed for industrial embedded systems requiring precise SMT placement and mis-mating prevention. Available in tape-and-reel packaging worldwide.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 18-position dual-row SMT terminal strip at 0.100" (2.54 mm) pitch for compact standard-pitch board-to-board signal connections
- Dual-height (DH) through-hole locating posts ensuring accurate PCB alignment and preventing movement during reflow soldering up to 260°C
- K polarization key preventing incorrect mating orientation in multi-connector PCB assemblies
- Tape-and-reel (TR) packaging enabling automated high-volume SMT pick-and-place assembly
Applications
The TSM-109-02-TM-DH-A-K-TR is suited for 18-position dual-row board-to-board signal interconnects in industrial sensor modules, embedded I/O expansion boards, and compact control cards requiring standard 0.100" pitch SMT connectivity. The dual-height locating posts and polarizing key reduce assembly errors and improve placement accuracy on densely populated SMT panels. Tape-and-reel packaging supports automated production lines in cost-effective industrial and commercial electronic manufacturing.
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
How does the K polarization key on the TSM-109-02-TM-DH-A-K-TR prevent mating errors in a multi-connector PCB assembly?
The K polarization key adds an asymmetric feature to the 18-position 0.100" (2.54 mm) pitch connector body that makes it physically impossible to mate it in the reversed orientation with the corresponding male header. In PCB assemblies with multiple adjacent TSM connectors, this prevents reverse-insertion damage to all 18 signal pins, eliminating a common failure mode in sensor interface boards and industrial I/O modules assembled manually or in low-volume SMT processes.
What footprint does the TSM-109-02-TM-DH-A-K-TR occupy, and how compact is it compared to a single-row 18-pin alternative?
The TSM-109-02-TM-DH-A-K-TR has 18 positions in a 2-row configuration at 0.100" (2.54 mm) pitch, with 9 positions per row, giving a board-length of approximately 22.9 mm (9 x 2.54 mm). A single-row 18-pin header at the same pitch would occupy 45.7 mm (18 x 2.54 mm), so the dual-row design saves roughly 23 mm of board edge length, beneficial in compact embedded modules and sensor nodes with limited PCB real estate.
For industrial sensor modules operating from -40°C to +85°C, how does the TSM-109-02-TM-DH-A-K-TR maintain reliable connectivity?
SAMTEC TSM-series connectors are rated for operating temperatures from -55°C to +125°C, which comfortably covers the -40°C to +85°C industrial range. The dual-height locating posts mechanically anchor the 18-position connector against thermal expansion and contraction differential between the connector body and PCB laminate, while the 0.100" (2.54 mm) pitch pads provide robust solder-joint area for reliable electrical continuity through hundreds of thermal cycles in sensor module and field instrument applications.
What mating connector in SAMTEC's lineup pairs with TSM-109-02-TM-DH-A-K-TR for a complete 18-position board-to-board stack?
The TSM-109-02-TM-DH-A-K-TR mates with SAMTEC TSM-series compatible male headers sharing the 0.100" (2.54 mm) dual-row pitch and matching K key position. Typical mating headers offer stacking heights from 6 mm to over 20 mm, providing design flexibility to accommodate components between boards. The mated assembly maintains a rated contact normal force ensuring contact resistance below 30 mΩ across all 18 positions throughout the specified operating life.
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