TSM-127-01-SM-DH-A-K-TR SAMTEC Connector (Other) In Stock
Samtec TSM-127-01-SM-DH-A-K-TR is a 54-position, 0.100-inch pitch dual-row surface-mount terminal strip with SMT tails, dual-height insulator, and polarization key. Offers gold-plated contacts for reliable signal-level connections in high-density backplane and industrial I/O applications. Available in tape-and-reel format with global in-stock distribution.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 54
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-127-01-SM-DH-A-K-TR?
- 54-position dual-row SMT terminal strip on 0.100 inch (2.54 mm) industry-standard pitch
- SMT (SM) tail style with dual-height (DH) insulator for stable surface-mount reflow assembly
- Polarization key (K) prevents incorrect connector mating orientation in multi-connector boards
- Tape-and-reel (TR) packaging enables high-throughput automated SMT assembly lines
What is TSM-127-01-SM-DH-A-K-TR used for?
The TSM-127-01-SM-DH-A-K-TR is used in high-density signal routing applications such as backplane expansion headers, industrial PLC I/O modules, and data acquisition boards where 54 positions on a 0.100-inch pitch provide maximum pin density without moving to finer-pitch connectors. Its SMT tail configuration suits fully surface-mount PCB assemblies, eliminating through-hole drilling costs and enabling double-sided PCB use. The keyed insulator prevents wiring errors during field-replacement of daughter cards in rack-mounted industrial control systems.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-127-01-SM-DH-A-K-TR datasheet?
TSM-127-01-SM-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-127-01-SM-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the total pin count and row configuration of TSM-127-01-SM-DH-A-K-TR?
TSM-127-01-SM-DH-A-K-TR provides 54 positions arranged as 2 rows of 27 pins on a 0.100-inch (2.54 mm) pitch. This dual-row layout spans approximately 66 mm in the row direction, making it one of the larger TSM series variants. The 54-pin count supports dense I/O assignments, including power, ground, and up to 50 signal lines for GPIO buses, memory interfaces, or parallel data buses.
How does the SM tail style of TSM-127-01-SM-DH-A-K-TR differ from TL or L options, and which PCB process does it favor?
The SM (surface-mount) tail style means all contacts terminate as SMT pads with no through-board pins, unlike TL (through-hole tail) or L (right-angle through-hole tail) options. SM tails are fully compatible with standard solder paste and reflow ovens operating at peak temperatures up to 260°C for lead-free processes. This makes TSM-127-01-SM-DH-A-K-TR ideal for fully SMT production lines where eliminating through-hole drilling reduces board fabrication cost and assembly cycle time.
For how many mating cycles is TSM-127-01-SM-DH-A-K-TR rated, and does the gold plating help in field-replaceable card applications?
Samtec TSM series connectors with gold-plated contacts are typically rated for a minimum of 50 mating cycles under standard test conditions. Gold plating prevents oxidation and maintains contact resistance below 20 milliohms across the rated life, which is essential in field-replaceable daughter card applications where cards may be swapped repeatedly during commissioning, maintenance, or configuration changes in industrial systems.
Is TSM-127-01-SM-DH-A-K-TR a drop-in alternative to TSM-127-01-TL-DH-A-K-TR for an existing PCB layout?
TSM-127-01-SM-DH-A-K-TR and TSM-127-01-TL-DH-A-K-TR share the same 54-position, 2.54 mm dual-row insulator body and the same mating interface, but their PCB footprints differ. The SM version uses surface-mount SMT pads while the TL version requires through-hole drill holes with 0.8 mm or 1.0 mm diameter barrels. Switching between them requires a PCB footprint update; they are not drop-in substitutes without a board revision.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
10214-6212PC
3M
Connector
1778573
Phoenix Contact
Connector
5227222-3
TE Connectivity
Connector
S4B-XH-SM4-TB(LF)(SN)
JST (JAPAN SOLDERLESS TERMINALS)
Connector
185226-2
TE Connectivity
Connector
0533980571
Molex
Connector
0360-0-15-01-34-27-10-0
Mill-Max
Connector
7850-0006PR
3M
Connector
AVB 1,5/2/12
BLOCK
Connector
N3764-5002RB
3M
Connector
N3627-6002RB
3M
Connector
N3627-5002RB
3M
Connector
N3440-6002RB
3M
Connector
929715-03-36-I
3M
Connector
929667-02-36-I
3M
Connector
929665-04-36-I
3M
Connector
929665-02-36-I
3M
Connector
929647-04-36-I
3M
Connector
929647-03-36-I
3M
Connector
7834-0006PR
3M
Connector
7826-0006PR
3M
Connector
7820-0006PR
3M
Connector
3440-5002
3M
Connector
3433-5302
3M
Connector