STMM-125-02-H-D-SM-K-TR SAMTEC Connector (Other) In Stock
SAMTEC STMM-125-02-H-D-SM-K-TR is a 50-position (25+25) dual-row shrouded surface-mount board stacking connector with 2.00 mm pitch and gold-over-nickel terminations. Features keyed shroud, high-profile (H) housing 2.218 inches long, and tape-and-reel packaging for automated SMT assembly.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 50
- Lifecycle
- ACTIVE
- Category
- Connector
- Price
- From $8.3807(MOQ 50)
- 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 STMM-125-02-H-D-SM-K-TR?
- 50-position (25×2) dual-row shrouded SMT board stacking connector at 2.00 mm pitch with polarizing key for error-free mating
- Gold-over-nickel (Au/Ni) square-pin socket contacts for low contact resistance and extended mating cycle life in demanding SMT assemblies
- High-profile (H) 2.218-inch body in tape-and-reel format enabling automated pick-and-place production of large-count cable-mate connections
What is STMM-125-02-H-D-SM-K-TR used for?
The STMM-125-02-H-D-SM-K-TR is well suited for high-density board-to-cable and board-stacking interconnects in industrial computing, server backplanes, and communications equipment requiring 50-pin 2.00 mm pitch shrouded SMT connectors. Its keyed shroud prevents misalignment during cable assembly or board stacking in field-serviced equipment, while the gold terminations support repeated mating cycles in test fixtures and removable daughtercard applications. Tape-and-reel packaging enables efficient automated SMT placement in volume production runs for data center and embedded system boards.
What are the specifications of STMM-125-02-H-D-SM-K-TR?
| Factory Lead Time | 3Weeks |
| YTEOL | 8 |
| Body Breadth | 0.257inch |
| Body Depth | 0.24inch |
| Body Length | 2.218inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Termination | Gold (Au) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| Filter Feature | NO |
| Insulator Color | BLACK |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e4 |
| 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 | 4.66mm |
| Plating Thickness | 30u inch |
| Polarization Key | POLARIZATION NOTCH |
| Rated Current (Signal) | 3A |
| Reference Standard | UL |
| Terminal Pitch | 2mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 50 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | France, Malaysia |
Where can I find the STMM-125-02-H-D-SM-K-TR datasheet?
STMM-125-02-H-D-SM-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for STMM-125-02-H-D-SM-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many signals can STMM-125-02-H-D-SM-K-TR accommodate and what body dimensions does the connector occupy?
The STMM-125-02-H-D-SM-K-TR accommodates 50 signals in a 25×2 dual-row configuration at 2.00 mm pitch. Its body measures 2.218 inches in length, 0.257 inches in breadth, and 0.24 inches in depth. The high-profile (H) housing provides clearance for cables or stacked boards, and the keyed shroud ensures correct orientation across all 50 positions in SMT board stacking and cable-mate assemblies.
What contact finish does STMM-125-02-H-D-SM-K-TR use and how does it affect long-term reliability in repeated-mating applications?
The STMM-125-02-H-D-SM-K-TR uses gold-over-nickel (Au/Ni) square-pin socket contacts, which maintain contact resistance below 20 milliohms and resist oxidation over hundreds of mating cycles. Gold plating prevents the contact resistance creep seen with tin-finished contacts, making it suitable for test fixtures, removable daughter cards, and field-replaceable modules where the 50-pin connector may be mated and un-mated many times during its service life.
How does the 3-week factory lead time for STMM-125-02-H-D-SM-K-TR affect procurement planning for production builds?
The STMM-125-02-H-D-SM-K-TR carries a 3-week factory lead time, which means orders placed without stock on hand require approximately 21 calendar days before shipment. For production programs using this 50-position, 2.00 mm pitch SMT connector, buyers should place orders 4 to 6 weeks before the scheduled assembly start, or maintain a safety stock of at least 2 to 3 weeks of production quantity to avoid line stoppages.
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 50+ | $23.8800 | $1194.00 |
| 100+ | $18.5700 | $1857.00 |
| 250+ | $16.7900 | $4197.50 |
| 500+ | $12.7790 | $6389.50 |
| 1000+ | $8.5930 | $8593.00 |
| 1275+ | $8.3807 | $10685.42 |
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.”
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