TSM-109-04-S-DH-P-TR SAMTEC Connector (Other) In Stock
Samtec TSM-109-04-S-DH-P-TR is an 18-position, 0.100-inch pitch dual-row surface-mount terminal strip with straight SMT tails, dual-height insulator, and polarized positions. Features tin-plated contacts for general-purpose signal interconnects in industrial and consumer electronics applications. Available in tape-and-reel packaging for automated SMT placement with global in-stock distribution.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- TSM-109-04-S-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-109-04-S-DH-P-TR?
- 18-position dual-row SMT terminal strip on 0.100 inch (2.54 mm) standard pitch for general signal routing
- Straight (S) SMT tails with dual-height (DH) insulator for stable surface-mount reflow assembly
- Polarized (P) insulator option ensures correct connector orientation without requiring a physical key
- Tape-and-reel (TR) packaging enables automated pick-and-place assembly in high-volume SMT lines
What is TSM-109-04-S-DH-P-TR used for?
The TSM-109-04-S-DH-P-TR is used in compact PCB signal headers for consumer electronics, development boards, and industrial sensors where an 18-position 0.100-inch dual-row connector provides sufficient I/O density without the bulk of larger pin counts. Its polarized insulator reduces assembly errors when connecting ribbon cables or daughter cards in field-deployable instruments and IoT gateway modules. The SMT-only tail style suits fully surface-mount production lines, enabling double-sided PCB assembly without through-hole drilling.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-109-04-S-DH-P-TR datasheet?
TSM-109-04-S-DH-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-109-04-S-DH-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many pins does TSM-109-04-S-DH-P-TR have per row, and how are they laid out on the PCB?
TSM-109-04-S-DH-P-TR provides 18 total positions arranged as 2 rows of 9 pins on a 0.100-inch (2.54 mm) pitch. Each row spans approximately 20 mm in length, giving a compact 20 mm by 5 mm SMT footprint. This makes it suitable for compact I/O headers on development boards or sensor modules that need to break out 9 signal lines per row, such as a combined SPI plus GPIO plus power bus.
What does the P suffix indicate in TSM-109-04-S-DH-P-TR, and how does polarization prevent wiring errors?
The P suffix designates a polarized insulator variant, where the connector body includes physical features such as blocked pins or asymmetric body contours that force a single correct mating orientation. This prevents reversed insertion, which can short power to signal lines in 18-position I/O headers. Polarization is especially valuable in field-maintenance scenarios where cables are disconnected and reconnected by technicians under time pressure in industrial or instrumentation environments.
Can TSM-109-04-S-DH-P-TR handle 5 V logic signals and small supply currents on shared pins?
Yes, TSM-109-04-S-DH-P-TR is rated for signal-level voltages up to 125 V AC/DC per Samtec TSM series specifications, and can carry up to 3 A per contact for power pins depending on temperature rise requirements. At 5 V logic with signal currents below 500 mA, the tin-plated contacts maintain adequate conductivity, though gold-plated options provide lower and more stable contact resistance below 20 milliohms for high-cycle applications.
When is TSM-109-04-S-DH-P-TR preferred over a single-row 18-pin header for the same I/O signal count?
TSM-109-04-S-DH-P-TR in dual-row format occupies roughly half the PCB length of a single-row 18-pin header on the same 2.54 mm pitch: approximately 20 mm versus 43 mm. This 2x length reduction is critical in width-constrained PCB layouts such as narrow IoT boards or camera modules where reducing connector length by 23 mm can free space for other components. The dual-row also provides a more stable mechanical footprint against lateral cable-pull forces.
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