TSM-128-04-SM-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-128-04-SM-DH-A-K-TR is a 56-position dual-row surface-mount terminal strip with 2.54 mm pitch and gold-plated contacts. Includes keyed alignment and is tape-and-reel packaged for automated assembly. From $2.00 in stock, worldwide shipping available.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-128-04-SM-DH-A-K-TR?
- 56-position dual-row configuration on 2.54 mm (0.100") pitch supporting high-density board-to-board signal routing
- Keyed (K suffix) mechanical alignment preventing mismating in multi-connector PCB assemblies
- Gold-plated contacts providing low contact resistance and corrosion resistance over many mating cycles
- Tape-and-reel (TR) packaging enabling automated SMT pick-and-place manufacturing integration
What is TSM-128-04-SM-DH-A-K-TR used for?
The TSM-128-04-SM-DH-A-K-TR serves as a high-density board interconnect for industrial automation controllers, computing backplanes, and test-and-measurement equipment requiring 56 signal lanes in a single surface-mount connector footprint. The keyed housing prevents assembly errors in systems with multiple identical headers placed side by side. Its tape-and-reel format supports automated volume manufacturing without sacrificing placement accuracy.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-128-04-SM-DH-A-K-TR datasheet?
TSM-128-04-SM-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-128-04-SM-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many signal positions does TSM-128-04-SM-DH-A-K-TR provide, and how are they organized on the PCB footprint?
The TSM-128-04-SM-DH-A-K-TR provides 56 positions in a dual-row layout, with 28 pins per row on a 2.54 mm (0.100") pitch. This arrangement distributes 56 signals across two parallel rows, reducing connector length while maintaining standard 0.100" pitch compatibility for mating connectors.
For a system with multiple identical 56-pin connectors on the same board, how does the keying feature of TSM-128-04-SM-DH-A-K-TR prevent assembly errors?
The K suffix indicates a mechanically keyed housing that only allows the correct mating connector to engage. When multiple TSM-128 connectors are placed close together on the same board, the key slot physically blocks wrong-connector mating, preventing signal shorts, pin damage, or PCB failures caused by incorrect connector insertion during assembly or field maintenance.
What contact finish does TSM-128-04-SM-DH-A-K-TR use, and how does it affect long-term signal reliability?
TSM-128-04-SM-DH-A-K-TR uses gold-plated contacts, which provide low and stable contact resistance over many mating cycles. Gold plating resists oxidation in ambient and mildly harsh environments, ensuring consistent signal integrity on all 56 positions throughout the product lifetime without the contact degradation seen with tin-plated alternatives.
Is TSM-128-04-SM-DH-A-K-TR an appropriate choice for high-volume automated PCB production?
Yes, the TR suffix designates tape-and-reel packaging compatible with automated SMT pick-and-place equipment. This allows TSM-128-04-SM-DH-A-K-TR to be fed directly into high-speed placement machines, supporting production volumes of thousands of boards per day without manual component handling.
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