SQT-127-01-L-D SAMTEC Connector (Other) In Stock
SAMTEC SQT-127-01-L-D is a 54-position, dual-row rugged PCB socket with 2.00 mm pitch featuring 10 micro-inch gold over 50 micro-inch nickel mating contacts for extended mating cycle life. Its low-profile body suits board-to-board applications where height clearance is limited. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 54
- Lifecycle
- ACTIVE
- Datasheet
- SQT-127-01-L-D Datasheet PDF
- Category
- Connector
- Price
- From $3.3138(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SQT-127-01-L-D?
- 54-position dual-row PCB socket at 2.00 mm pitch provides reliable, dense interconnect for board-to-board and daughter card applications
- 10 micro-inch gold over 50 micro-inch nickel mating contacts deliver superior wear resistance and low contact resistance across extended mating cycles
- FLEXYZ mechanical compliance option allows tolerance absorption between mating boards, reducing stress on solder joints in vibration-prone environments
What is SQT-127-01-L-D used for?
The SQT-127-01-L-D is designed for rugged industrial, telecommunications, and embedded computing applications where a cost-effective yet durable 54-position board socket is required. The 10 µin gold over 50 µin nickel mating contact plating ensures reliable low-resistance connections through hundreds of mating cycles, making it well suited for field-replaceable modules or test fixtures. Its 2.00 mm pitch dual-row footprint accommodates a wide variety of mating header configurations from Samtec and compatible vendors.
What are the specifications of SQT-127-01-L-D?
| Pbfree Code | Yes |
| YTEOL | 8 |
| Additional Feature | FLEXYZ, TIGER BUY CONTACT |
| Body Breadth | 0.158inch |
| Body Depth | 0.25inch |
| Body Length | 2.145inch |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD (10) OVER NICKEL (50) |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 10mΩ |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Durability | 100Cycles |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insertion Force-Max | 1.112N |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.079inch |
| Mating Contact Row Spacing | 0.079inch |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 2.0066mm |
| Plating Thickness | 10u inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 5.1A |
| Reference Standard | UL, CSA |
| Terminal Length | 0.09inch |
| Terminal Pitch | 2mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 54 |
| Withdrawl Force-Min | .834N |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | USA, Vietnam |
Where can I find the SQT-127-01-L-D datasheet?
SQT-127-01-L-D Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SQT-127-01-L-D?
Compatible alternatives and drop-in replacements for SQT-127-01-L-D:
Samtec Inc Board Connector, 54 Contact(s), 2 Row(s), Female, Straight, 0.079 inch Pitch, Solder Terminal, Locking, Black Insulator, Socket
Frequently Asked Questions
How does the 10 µin gold over 50 µin nickel contact finish on SQT-127-01-L-D extend connector service life?
The SQT-127-01-L-D uses 10 micro-inch gold plating over a 50 micro-inch nickel barrier on mating contacts. Gold provides an oxide-free, low-contact-resistance surface, while the thick nickel underlayer prevents diffusion from the base copper. Together they maintain reliable sub-100-milliohm contact resistance across hundreds of mating cycles in industrial and field-serviceable applications.
What mechanical compliance feature does the SQT-127-01-L-D offer for board-to-board alignment challenges?
The FLEXYZ option available on the SQT-127-01-L-D provides three-axis mechanical compliance, allowing the 54-position, 2.00 mm pitch socket to absorb positional tolerances between two mating PCBs. This flexibility reduces stress on solder joints during thermal cycling or vibration, extending the long-term reliability of the board-to-board connection in rugged industrial environments.
When should an engineer choose the SQT-127-01-L-D over a gold flash contact variant in a mating application?
Engineers should select the SQT-127-01-L-D, with its 10 µin gold over 50 µin nickel contact finish, over gold-flash variants when the 54-position connector will experience frequent mating cycles in test fixtures, field-replaceable modules, or maintenance-heavy industrial equipment. Gold flash (typically under 5 µin) wears through faster, whereas the heavier plating on the SQT-127-01-L-D maintains low contact resistance through hundreds of insertions.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $10.1000 | $10.10 |
| 25+ | $7.1440 | $178.60 |
| 50+ | $6.2960 | $314.80 |
| 100+ | $5.5760 | $557.60 |
| 500+ | $4.4446 | $2222.29 |
| 1000+ | $3.3138 | $3313.77 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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