STMM-120-02-F-D-SM SAMTEC Connector (Other) In Stock
SAMTEC STMM-120-02-F-D-SM is a 240-position, 2.00 mm pitch dual-row surface mount board stacking connector with male phosphor bronze contacts and gold-flash-over-nickel mating finish. Supports high-density vertical board stacking. From $18.50, in stock, worldwide shipping available.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- STMM-120-02-F-D-SM Datasheet PDF
- Category
- Connector
- Price
- From $1.8631(MOQ 12)
- 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-F-D-SM?
- 240-position (2×120) dual-row board stacking connector on 2.00 mm pitch for ultra-high-density vertical board-to-board interconnect
- Phosphor bronze contacts with gold-flash-over-nickel mating finish deliver reliable signal integrity and corrosion resistance across extended mating cycles
- Surface mount (SM) termination with tin-over-nickel barrier enables standard reflow soldering and automated PCB assembly compatibility
What is STMM-120-02-F-D-SM used for?
The STMM-120-02-F-D-SM is engineered for high-density board stacking applications in embedded computing, telecom line cards, and industrial rack systems requiring 240 reliable male pin connections between two PCBs. Its 2.00 mm pitch and surface mount termination suit compact multi-board assemblies where vertical stacking height and signal density are critical design constraints.
What are the specifications of STMM-120-02-F-D-SM?
| Pbfree Code | Yes |
| YTEOL | 8 |
| Body Breadth | 0.257inch |
| Body Depth | 0.19inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD FLASH 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 |
| Filter Feature | NO |
| Insulator Material | POLYAMIDE |
| JESD-609 Code | e3 |
| Mating Contact Pitch | 0.079inch |
| Mating Contact Row Spacing | 0.079inch |
| 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 |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 2.0066mm |
| Plating Thickness | FLASH inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 3A |
| Terminal Pitch | 2.0066mm |
| 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-F-D-SM datasheet?
STMM-120-02-F-D-SM Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for STMM-120-02-F-D-SM?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact pitch and total pin count does STMM-120-02-F-D-SM provide for board stacking?
The STMM-120-02-F-D-SM uses a 2.00 mm pitch in a dual-row male configuration, providing 240 total contact positions (2×120). This high pin count makes it suitable for board stacking applications in telecom, industrial, and embedded computing systems where large numbers of signals must pass between 2 boards simultaneously.
What contact material and plating are specified for STMM-120-02-F-D-SM mating and termination?
The mating contacts use gold-flash-over-nickel finish (50 microinch nickel base) providing corrosion resistance for signal-level connections. The termination side uses tin with a nickel barrier to ensure reliable reflow solder joint formation. The contact material is phosphor bronze, which provides good spring retention and electrical conductivity rated for repeated mating cycles.
How does the SM suffix in STMM-120-02-F-D-SM affect PCB assembly and layout planning?
The SM suffix designates surface mount termination, meaning all 240 pins are soldered directly to SMT pads on the PCB surface without through-hole drilling. This enables double-sided board assembly, reduces PCB layer via counts, and allows automated reflow soldering compatible with standard pick-and-place equipment for high-volume production of multi-board stacking assemblies.
For a dual-board industrial control system, at what board-to-board stacking height does STMM-120-02-F-D-SM operate?
STMM-120-02-F-D-SM is designed for 2.00 mm pitch board stacking configurations; body depth measures approximately 0.19 inch (4.8 mm), which defines the compressed mated stack height. This compact profile suits industrial control backplanes and embedded system modules where vertical clearance between two PCBs is limited to under 6 mm while maintaining 240 reliable signal contacts.
Related Guides
How to Choose an Indicator LED: TLMG1100-GS08 Selection Guide
Select TLMG1100-GS08 and evaluate four indicator LED candidates through optical, electrical, footprint, and sourcing checks.
Nov 5, 2026
150141YS73100 Yellow LED Indicator Design and Validation Guide
Design and validate a 150141YS73100 yellow indicator with current-limit calculations, GPIO checks, PWM control, and enclosure visibility tests.
Nov 5, 2026
How to Choose an LMG1020YFFR GaN Gate Driver: Selection and Sourcing Guide
Compare LMG1020 and LMG1210 circuit roles, gate-drive requirements, ordering codes, and sourcing evidence before approving a GaN driver.
Nov 4, 2026
150141YS73100 LED Selection and Procurement Guide
Evaluate 150141YS73100 and four related LEDs using optical, electrical, mechanical, and sourcing checks before production approval.
Nov 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 |
|---|---|---|
| 12+ | $6.8667 | $82.40 |
| 50+ | $5.9800 | $299.00 |
| 100+ | $4.4600 | $446.00 |
| 500+ | $3.6699 | $1834.94 |
| 1000+ | $2.7872 | $2787.16 |
| 2000+ | $1.8631 | $3726.20 |
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