STMM-120-02-L-D-SM SAMTEC Connector (Other) In Stock
SAMTEC STMM-120-02-L-D-SM is a 40-position dual-row board stacking connector with gold-over-nickel contacts on 2.00 mm pitch. RoHS compliant and rated for repeated mating cycles in compact PCB assemblies. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- STMM-120-02-L-D-SM Datasheet PDF
- Category
- Connector
- Price
- From $2.2333(MOQ 25)
- 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-120-02-L-D-SM?
- 40-position dual-row male board stacking connector on 2.00 mm pitch for high-density PCB interconnects
- Gold (10 µin) over Nickel (50 µin) mating contacts with tin-over-nickel termination for reliable signal integrity
- Phosphor bronze contact material ensures robust spring force and low insertion loss across ≥100 mating cycles
- RoHS compliant construction with Surface Mount (SM) termination style for automated reflow assembly
What is STMM-120-02-L-D-SM used for?
The STMM-120-02-L-D-SM is used in board-to-board stacking applications within industrial control systems, embedded computing modules, and test instrumentation where a 2.00 mm pitch dual-row connector with 40 positions is required. Its surface-mount termination makes it compatible with standard SMT reflow processes on compact PCBs. The gold-plated contacts support reliable signal routing in data acquisition and communication backplane designs.
What are the specifications of STMM-120-02-L-D-SM?
| Pbfree Code | Yes |
| YTEOL | 8 |
| Body Breadth | 0.257inch |
| Body Depth | 0.19inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD (10) OVER NICKEL (50) |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Material | POLYAMIDE |
| 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) | 3A |
| Terminal Pitch | 2mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 40 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Malaysia, USA |
Where can I find the STMM-120-02-L-D-SM datasheet?
STMM-120-02-L-D-SM Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for STMM-120-02-L-D-SM?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the pitch and number of positions for the STMM-120-02-L-D-SM?
The STMM-120-02-L-D-SM is a dual-row male board stacking connector with 40 positions arranged on a 2.00 mm pitch, making it suitable for high-density PCB-to-PCB interconnects in space-constrained designs.
What contact finish does the STMM-120-02-L-D-SM use, and why does it matter for mating reliability?
The mating contacts are plated with 10 µin gold over 50 µin nickel, providing corrosion resistance and low contact resistance across a minimum of 100 mating cycles. The tin-over-nickel termination finish on the solder tails is compatible with standard lead-free reflow soldering at temperatures up to 260°C.
Which PCB assembly processes are compatible with the STMM-120-02-L-D-SM surface-mount termination?
The SM (Surface Mount) termination style allows the STMM-120-02-L-D-SM to be placed and reflowed using standard automated SMT equipment. The body dimensions of 0.257 inch breadth and 0.19 inch depth keep the connector footprint compact, supporting reflow profiles up to 260°C peak temperature on both rigid and semi-flexible PCB assemblies.
Is the STMM-120-02-L-D-SM compliant with RoHS regulations?
Yes, the STMM-120-02-L-D-SM is fully RoHS compliant. It uses lead-free tin-nickel termination finish, phosphor bronze contacts, and packaging materials that meet EU RoHS 2 Directive 2011/65/EU restrictions on 6 hazardous substances.
Related Guides
STM32H753VIT6 High-Performance MCU Design Guide
Practical STM32H753VIT6 design guidance for power, clocks, memory, DMA, PCB layout, bring-up, and production recovery.
Aug 3, 2026
STM32H753ZIT6 Selection Guide for High-Performance Embedded Systems
Select the STM32H753ZIT6 by evaluating compute, memory, LQFP144 pinout, power, interfaces, security, and sourcing requirements.
Aug 3, 2026
ICL7660ACPAZ Negative Voltage Charge Pump Design Guide
Design a reliable ICL7660ACPAZ negative rail with capacitor equations, layout rules, startup checks, and practical troubleshooting.
Aug 2, 2026
C0402C103K3RACTU 10 nF MLCC Design Guide
Practical guidance for applying the C0402C103K3RACTU 10 nF, 25 V X7R MLCC in decoupling, filtering, timing, and EMI-control networks.
Aug 2, 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 |
|---|---|---|
| 25+ | $7.0212 | $175.53 |
| 50+ | $6.7670 | $338.35 |
| 100+ | $5.3500 | $535.00 |
| 500+ | $4.4024 | $2201.20 |
| 1000+ | $3.3413 | $3341.32 |
| 2000+ | $2.2333 | $4466.66 |
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