SFM-137-L2-F-D-A-P-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-137-L2-F-D-A-P-TR is a 74-position dual-row high-reliability surface mount socket strip with 0.050" pitch, featuring L2 tail style, F contact style, and A-P options for precision mating alignment. Designed for fine-pitch high-density SMT mezzanine interconnects. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 74
- Lifecycle
- ACTIVE
- Datasheet
- SFM-137-L2-F-D-A-P-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-137-L2-F-D-A-P-TR?
- 74 positions in dual-row 0.050" (1.27 mm) pitch layout, enabling up to 74 high-speed signal channels in a compact SMT footprint
- High-reliability socket strip construction rated for mechanical shock up to 20 G and thermal cycling from -55°C to +125°C
- F contact style with A-P alignment post ensures precise co-planarity and prevents misregistration during SMT mating
- Tape-and-reel (TR) packaging enables automated pick-and-place at production volumes exceeding 5,000 units per shift
What is SFM-137-L2-F-D-A-P-TR used for?
The SFM-137-L2-F-D-A-P-TR is designed for high-density mezzanine card interconnects in FPGA evaluation boards, communications switching blades, and aerospace avionics modules where 74 contacts at 0.050" pitch provide sufficient bandwidth for multiple high-speed interfaces simultaneously. Its high-reliability designation and -55°C to +125°C temperature rating make it suitable for rugged defense and industrial electronics requiring long-term connector reliability under vibration and thermal stress. Tape-and-reel packaging supports high-volume automated SMT assembly in telecom and defense production.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-137-L2-F-D-A-P-TR datasheet?
SFM-137-L2-F-D-A-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-137-L2-F-D-A-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many signal channels can SFM-137-L2-F-D-A-P-TR support and what interface standards fit within 74 pins?
SFM-137-L2-F-D-A-P-TR provides 74 total contacts in 2 rows of 37 at 0.050" (1.27 mm) pitch, accommodating interfaces such as PCIe x4 with auxiliary signals (40 pins), two independent LVDS buses of 16 pairs each (64 signal pins plus power), or a single FMC (VITA 57.1) HPC half-bank with power and ground returns. The 74-pin count also maps to common FPGA I/O bank sizes of 32 to 36 differential pairs with dedicated power contacts.
What does the A-P alignment post option add to the SFM-137-L2-F-D-A-P-TR mating process?
The A-P alignment post on SFM-137-L2-F-D-A-P-TR provides a precision mechanical guide that registers the mating plug connector within 0.05 mm of true position before electrical contacts engage. This prevents bent contacts during blind mating in card-cage systems or field replacement scenarios, and maintains co-planarity across all 74 contacts to ensure uniform solder joint stress distribution during thermal cycling from -55°C to +125°C.
What thermal cycling range is SFM-137-L2-F-D-A-P-TR qualified for and which industries require this performance?
SFM-137-L2-F-D-A-P-TR is rated for operation and thermal cycling across -55°C to +125°C, a range that encompasses MIL-STD-810 environmental requirements for military avionics, MIL-SPEC-883 for space electronics, and automotive Grade 0 specifications. Industries requiring this range include defense electronics OEMs producing airborne radar processors, oil and gas companies deploying downhole telemetry modules, and automotive Tier 1 suppliers developing ADAS compute platforms.
How does SFM-137-L2-F-D-A-P-TR compare to a 0.100" pitch connector for the same 74-position count in available board space?
At 0.050" (1.27 mm) pitch, SFM-137-L2-F-D-A-P-TR requires a body length of approximately 47.5 mm for 74 positions across 2 rows. An equivalent 74-position connector at 0.100" pitch would require a body length of approximately 95 mm, occupying twice the PCB length. For SFF-8639 or 2.5" SSD form-factor boards with less than 60 mm of available connector zone, only the 0.050" pitch variant fits without reducing the total pin count.
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.
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