1.27mm SMC Connector Socket
Technical information
Limited space and high-performance demands are characteristics of many modern electronic systems, all of which the connectors must accommodate. There is a corresponding demand for compact, secure, and reliable connectors, with high signal integrity and a relatively high current‐carrying capacity. The comprehensive SMC range helps meet these requirements. The high‐performance SMT connectors come in a number of different designs, heights, and contact densities in a 1.27 mm grid.
The basic design criteria for the SMC series include Double spring terminals ensure first-class contact characteristics and maximum contact reliability, a high‐temperature resistant insulator with polarization and insertion chamfers, and a very high mating reliability.
The perfect contact design exhibits a virtually continuous impedance curve and enables secure data transmission rates of up to 3 Gbit/s (differential) if the system is suitably designed.
Features
| Pitch | 1.27mm |
| No. of Pins | 12, 16, 20, 26, 32, 40, 50, 68, 80 |
| Termination technology | SMT |
| Applications | Data rate up to 3 Gbit/s |
| Current rating up to 1.7 A per contact Board-to-board connections: | |
| - stacked (Mezzanine); - orthogonal | |
| Connectors | Male connectors: Vertical and right-angle |
| Female connectors: Vertical and right-angle | |
| Special versions | Vertical docking can reach a height of 20~38mm, and a variety of stacking heights can be selected |
Advantge
● High reliable contact design
Extremely reliable double contact female terminal
90° torsion spring terminal
The rolling surface has a uniform texture to ensure that the terminals are firmly inserted
Large contact area between male and female terminals
Extremely low bending surface roughness, minimizing surface wear
Low contact resistance
● Polarization / Mating Face
Fool-proof design of the mating surface to prevent incorrect insertion and connection errors
The chamfer around the plastic ensures a large guide tolerance
Unique single hole chamfer design facilitates precise insert
● Robust Solder Clips
Excellent holding power on the circuit board
The fixed piece can absorb mechanical stress and can withstand high impact and vibration loads
SMT connectors are firm and reliable, ensuring sufficient shear and tear resistance (for example: shear force: minimum 1000 N; tear resistance: minimum 100 N)
● Friction Distance
Larger friction distance provides contact reliability and compensates for tolerances between different heights
● Positioning Column
Different geometries of positioning posts ensure precise positioning on the circuit board
To achieve the best compensation for PCB holes for positive and negative tolerances
Processing
Tape And Reel
Fully Automatic Assembly And Reflow Soldering
Back Reflow Soldering
Plugging Conditions
Allowed Inclination For A Secure Self-centering
Male And Female Fit Tolerance
Board To Board Height
Stacked Boards / Mezzanine
| Board to board connector height | Male connector height | Female connector height |
| 8.00 - 9.50 mm | 1.75 | 6.25 |
| 9.50 - 11.0 mm | 3.25 | 6.25 |
| 10.80 - 12.30 mm | 1.75 | 9.05 |
| 12.30 - 13.80 mm | 3.25 | 9.05 |
| 13.90 - 15.40 mm | 4.85 | 9.05 |
| 15.40 - 16.90 mm | 1.75 | 13.65 |
| 16.90 - 18.40 mm | 3.25 | 13.65 |
| 18.50 - 20.00 mm | 4.85 | 13.65 |
| Board‐to‐Board Height | Board‐to‐Board Adapter | Female Stacking Height |
| 20 mm | 20 | 2 x 6.25 |
| 22 mm | 22 | 2 x 6.25 |
| 24 mm | 24 | 2 x 6.25 |
| 26 mm | 26 | 2 x 6.25 |
| 28 mm | 28 | 2 x 6.25 |
| 30 mm | 30 | 2 x 6.25 |
| 32 mm | 32 | 2 x 6.25 |
| 34 mm | 34 | 2 x 6.25 |
| 36 mm | 36 | 2 x 6.25 |
| 38 mm | 38 | 2 x 6.25 |
| 40 mm | 38 (reduced wipe length) | 2 x 6.25 |
Electrical Specifications
Technical Data
| Description | Standard | PCB Connectors, Cable Assemblies, B-to-B Adapter |
| Climate category | DIN EN 60068-1 test b |
55 / 150 / 56 |
| Temperature range | -55℃ / 125℃ | |
| Current rating per contact | IEC60512 test 5b | 12-pin version at 20 ℃ ambient temperature: 1.7 A (up to 2.7 A with optimized layout) |
| Air-and creepage distance | contact - contact min. 0.4 mm | |
| Operating voltage | IEC 60664 | The permissible operating voltages depend on the customer application and on the applicable or specified safety requirements. Insulation coordination according to IEC 60664‐1 has to be regarded for the complete electrical device. Therefore, the maxi‐mum creepage and clearance distances of the mated connectors are specified for consideration as a part of the whole current path. In practice, reductions in creepage or clearance distances may occur due to the conductive pattern of the printed board or the wiring used, and have to be taken into account separately. As a result, the creepage and clearance distances for the application may be reduced compared to those of the connector. |
| Dielectric strength | IEC 60512 test 4a | contact - contact 500 V |
| Contact resistance | IEC 60512 test | ＜25mΩ |
| Insulation resistance | IEC 60512 test 3a | > 104 MΩ |
| Vibration, sine | IEC 60512 test 6d | 10 – 2000 Hz 20 g |
| Contact disturbance (while vibration test) | IEC 60512 test 2e | < 1 µs |
| Shock half sine | IEC 60512 test 6c | 50 g 11 ms |
| Contact disturbance (while shock test) | IEC 60512 test 2e | < 1 µs |
High Frequency Characteristics
● High-speed Data Transmission
SMC connectors can be used as solution for unshielded high-speed applications.
The practically continuous impedance profile allows for secure data transmission rates of up to 3 Gbit/s (differential) if the system is suitably designed.
De-embedded measurement results for the micro backplane/daughter card application
50-pin SMC, angled female connector, straight male connector
Differential signal transmission
● Insertion Loss
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● Near End Crosstalk (next)
Right Angle Male Connector
● Product Specification
Surface mount dual row connector data rates up to 3 gbit/s location pegs for exact board placement black insulation body for fast and reliable visual recognition fully automated board assembly
● Dimensional Drawings
● Ordering Information
| No. of Pins | Packaging | Part Number |
| 12 | Tape and reel | 127H02-12-X-R0 |
| 16 | Tape and reel | 127H02-16-X-R0 |
| 20 | Tape and reel | 127H02-20-X-R0 |
| 26 | Tape and reel | 127H02-26-X-R0 |
| 32 | Tape and reel | 127H02-32-X-R0 |
| 40 | Tape and reel | 127H02-40-X-R0 |
| 50 | Tape and reel | 127H02-50-X-R0 |
| 68 | Tape and reel | 127H02-68-X-R0 |
| 80 | Tape and reel | 127H02-80-X-R0 |
Right Angle Female Connector
● Product Specification
• Surface Mount
• Dual Row Connector
• Data Rates Up To 3 Gbit/s
• Location Pegs For Exact Board Placement
• Black Insulation Body For Fast And Reliable Visual Recognition
• Fully Automated Board Assembly
● Dimensional Drawings
● Ordering Information
| No. of Pins | Packaging | Part Number |
| 12 | Tape and reel | 127S05-12-X-R0 |
| 16 | Tape and reel | 127S05-16-X-R0 |
| 20 | Tape and reel | 127S05-20-X-R0 |
| 26 | Tape and reel | 127S05-26-X-R0 |
| 32 | Tape and reel | 127S05-32-X-R0 |
| 40 | Tape and reel | 127S05-40-X-R0 |
| 50 | Tape and reel | 127S05-50-X-R0 |
| 68 | Tape and reel | 127S05-68-X-R0 |
| 80 | Tape and reel | 127S05-80-X-R0 |
Vertical Male Connector
● Product Specification
• Surface Mount
• Dual Row Connector
• Data Rates Up To 3 Gbit/s
• Location Pegs For Exact Board Placement
• Black Insulation Body For Fast And Reliable Visual Recognition
• Fully Automated Board Assembly
• 3 Stacking Heights (6.25, 9.05, 13.65 Mm)
● Dimensional Drawings
Unmated Stacking Height 9.05 mm
● Ordering Information
| No. of Pins | Unmated Stacking Height | Packaging | Part Number |
| 12 | 1.75 | Tape and reel | 127H01-12-X-R2 |
| 16 | 1.75 | Tape and reel | 127H01-16-X-R2 |
| 20 | 1.75 | Tape and reel | 127H01-20-X-R2 |
| 26 | 1.75 | Tape and reel | 127H01-26-X-R2 |
| 32 | 1.75 | Tape and reel | 127H01-32-X-R2 |
| 40 | 1.75 | Tape and reel | 127H01-40-X-R2 |
| 50 | 1.75 | Tape and reel | 127H01-50-X-R2 |
| 68 | 1.75 | Tape and reel | 127H01-68-X-R2 |
| 80 | 1.75 | Tape and reel | 127H01-80-X-R2 |
| No. of Pins | Unmated Stacking Height | Packaging | Part Number |
| 12 | 3.25 | Tape and reel | 127H03-12-X-R2 |
| 16 | 3.25 | Tape and reel | 127H03-16-X-R2 |
| 20 | 3.25 | Tape and reel | 127H03-20-X-R2 |
| 26 | 3.25 | Tape and reel | 127H03-26-X-R2 |
| 32 | 3.25 | Tape and reel | 127H03-32-X-R2 |
| 40 | 3.25 | Tape and reel | 127H03-40-X-R2 |
| 50 | 3.25 | Tape and reel | 127H03-50-X-R2 |
| 68 | 3.25 | Tape and reel | 127H03-68-X-R2 |
| 80 | 3.25 | Tape and reel | 127H03-80-X-R2 |
| No. of Pins | Unmated Stacking Height | Packaging | Part Number |
| 12 | 4.85 | Tape and reel | 127H04-12-X-R2 |
| 16 | 4.85 | Tape and reel | 127H04-16-X-R2 |
| 20 | 4.85 | Tape and reel | 127H04-20-X-R2 |
| 26 | 4.85 | Tape and reel | 127H04-26-X-R2 |
| 32 | 4.85 | Tape and reel | 127H04-32-X-R2 |
| 40 | 4.85 | Tape and reel | 127H04-40-X-R2 |
| 50 | 4.85 | Tape and reel | 127H04-50-X-R2 |
| 68 | 4.85 | Tape and reel | 127H04-68-X-R2 |
| 80 | 4.85 | Tape and reel | 127H04-80-X-R2 |
Vertical Female Connector
● Product Specification
● Dimensional Drawings
● Ordering Information
| No. of Pins | Unmated Stacking Height | Packaging | Part Number |
| 12 | 6.25 | Tape and reel | 127S02-12-X-R2 |
| 16 | 6.25 | Tape and reel | 127S02-16-X-R2 |
| 20 | 6.25 | Tape and reel | 127S02-20-X-R2 |
| 26 | 6.25 | Tape and reel | 127S02-26-X-R2 |
| 32 | 6.25 | Tape and reel | 127S02-32-X-R2 |
| 40 | 6.25 | Tape and reel | 127S02-40-X-R2 |
| 50 | 6.25 | Tape and reel | 127S02-50-X-R2 |
| 68 | 6.25 | Tape and reel | 127S02-68-X-R2 |
| 80 | 6.25 | Tape and reel | 127S02-80-X-R2 |
| No. of Pins | Unmated Stacking Height | Packaging | Part Number |
| 12 | 9.05 | Tape and reel | 127S03-12-X-R2 |
| 16 | 9.05 | Tape and reel | 127S03-16-X-R2 |
| 20 | 9.05 | Tape and reel | 127S03-20-X-R2 |
| 26 | 9.05 | Tape and reel | 127S03-26-X-R2 |
| 32 | 9.05 | Tape and reel | 127S03-32-X-R2 |
| 40 | 9.05 | Tape and reel | 127S03-40-X-R2 |
| 50 | 9.05 | Tape and reel | 127S03-50-X-R2 |
| 68 | 9.05 | Tape and reel | 127S03-68-X-R2 |
| 80 | 9.05 | Tape and reel | 127S03-80-X-R2 |
| No. of Pins | Unmated Stacking Height | Packaging | Part Number |
| 12 | 13.65 | Tape and reel | 127S04-12-X-R2 |
| 16 | 13.65 | Tape and reel | 127S04-16-X-R2 |
| 20 | 13.65 | Tape and reel | 127S04-20-X-R2 |
| 26 | 13.65 | Tape and reel | 127S04-26-X-R2 |
| 32 | 13.65 | Tape and reel | 127S04-32-X-R2 |
| 40 | 13.65 | Tape and reel | 127S04-40-X-R2 |
| 50 | 13.65 | Tape and reel | 127S04-50-X-R2 |
| 68 | 13.65 | Tape and reel | 127S04-68-X-R2 |
| 80 | 13.65 | Tape and reel | 127S04-80-X-R2 |
