TSM-123-04-TL-DH-A-K-TR SAMTEC Connector (Other) In Stock
Samtec TSM-123-04-TL-DH-A-K-TR is a 46-position, 0.100-inch pitch dual-row surface-mount terminal strip with through-hole tails and key options. Rated for standard signal-level current with gold-plated contacts and designed for reliable PCB-to-wire or board-to-board interconnection. Available in tape-and-reel packaging with worldwide in-stock distribution.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-123-04-TL-DH-A-K-TR?
- 46-position dual-row SMT terminal strip on 0.100 inch (2.54 mm) standard pitch
- Through-hole tails (TL) with dual-height (DH) insulator for robust mechanical retention
- Gold-plated contacts (K option) for reliable low-resistance signal interconnection
- Tape-and-reel (TR) packaging supports high-volume automated SMT assembly
What is TSM-123-04-TL-DH-A-K-TR used for?
The TSM-123-04-TL-DH-A-K-TR is used in backplane and mezzanine board interconnects where a 46-position, 0.100-inch dual-row header provides dense signal routing in industrial control systems and test equipment. Its through-hole tails enhance mechanical stability during soldering and in vibration-prone environments such as embedded computing modules and data acquisition cards. The key (A-K) feature prevents incorrect mating, making it ideal for field-replaceable daughter cards in server and communications hardware.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-123-04-TL-DH-A-K-TR datasheet?
TSM-123-04-TL-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-123-04-TL-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many positions and what pitch does the TSM-123-04-TL-DH-A-K-TR use, and why does that matter for layout?
The TSM-123-04-TL-DH-A-K-TR provides 46 positions on a 0.100-inch (2.54 mm) dual-row pitch, giving a total of 23 pins per row. This standard 2.54 mm pitch is compatible with a wide range of mating headers and IDC cable connectors, simplifying PCB land pattern design and reducing custom tooling requirements for industrial or embedded computing boards.
What connector options does the A-K suffix indicate, and how do they benefit system assembly?
The A suffix denotes the standard insulator variant and the K suffix specifies a polarization key on the connector body. The key physically prevents incorrect mating orientation, which reduces assembly errors in multi-connector boards. Combined with gold-plated contacts, the keyed TSM-123-04-TL-DH-A-K-TR ensures first-pass correct insertion in high-mix production environments with 46-position signal headers.
Is the TSM-123-04-TL-DH-A-K-TR suitable for high-frequency signal routing in backplane applications?
The TSM-123-04-TL-DH-A-K-TR is optimized for standard signal-level applications on 0.100-inch pitch and is best suited for digital signals below 100 MHz. For high-speed differential signals above 1 GHz, Samtec's high-speed series with controlled-impedance 50-ohm contacts would be more appropriate. The TSM series excels at power distribution and general-purpose I/O routing in backplane and industrial control modules.
When should you choose TSM-123-04-TL-DH-A-K-TR over a through-hole only version for a new PCB design?
The TSM-123-04-TL-DH-A-K-TR is ideal when the design demands SMT reflow assembly but also needs the enhanced pull-out strength provided by the TL (through-hole tail) option. Through-hole tails add mechanical anchorage beyond solder fillets, increasing resistance to 5 N or more cable pull forces compared with SMT-only pads, which matters in rugged industrial or instrumentation PCBs where connectors are frequently mated and unmated.
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