TFM-142-04-LM-D-LC SAMTEC Connector (Other) In Stock
SAMTEC TFM-142-04-LM-D-LC is a 42-position dual-row high-reliability Tiger Eye terminal strip with 0.050 inch pitch surface mount low-profile configuration. It provides 84 contacts in a compact 1.27 mm pitch dual-row SMT footprint for high-density board-to-board interconnects.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 84
- Lifecycle
- ACTIVE
- Datasheet
- TFM-142-04-LM-D-LC Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 42-position dual-row layout at 0.050 inch (1.27 mm) pitch delivers 84 contacts in a compact low-profile SMT footprint for demanding high-channel-count board-to-board applications
- Tiger Eye high-reliability contact system ensures consistent low-resistance mating performance across the connector lifecycle in industrial and communications environments
- Low-profile SMT termination style minimizes PCB stack height while offering mechanically stable connections that withstand vibration and thermal cycling in harsh deployment conditions
Applications
The TFM-142-04-LM-D-LC addresses high-channel-count board-to-board interconnects in FPGA development boards, high-speed data acquisition cards, and multi-layer backplane systems requiring 84 pins in a compact SMT package. Its 0.050 inch pitch dual-row design enables designers to interface dense signal buses on closely stacked PCBs in telecommunications line cards and server expansion modules. The low-profile surface mount configuration also suits rugged embedded computing platforms where board height restrictions rule out tall through-hole connectors.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What total pin count does TFM-142-04-LM-D-LC provide, and how does it fit within a compact PCB layout for high-channel applications?
The TFM-142-04-LM-D-LC provides 84 total pins across 2 rows of 42 positions at 0.050 inch (1.27 mm) pitch. This configuration keeps the connector row length at approximately 53 mm, making it feasible to route 84 independent signal or power lines in FPGA mezzanine and data acquisition boards without exceeding standard card-edge slot dimensions.
How does TFM-142-04-LM-D-LC compare to TFM-128 series for designs that require more than 56 I/O lines?
The TFM-142-04-LM-D-LC provides 84 pins compared to 56 pins in the TFM-128 series, adding 28 extra contacts at the same 0.050 inch pitch and Tiger Eye reliability. The additional 14 positions per row extend the body length by about 18 mm, a modest increase that still fits within standard mezzanine card footprints while eliminating the need to add a second connector for high I/O count FPGA or DSP board designs.
What reflow soldering profile and temperature limits apply when assembling TFM-142-04-LM-D-LC onto a double-sided PCB?
TFM-142-04-LM-D-LC is rated for lead-free SAC305 reflow soldering with a peak temperature of 260°C per IPC/JEDEC J-STD-020. For double-sided PCB assembly, the 84-pin connector should be placed during the second reflow pass to avoid thermal stress on the low-profile SMT terminations during the first pass, and the 0.050 inch pitch pad pattern requires tight solder paste stencil aperture control to prevent bridging across the dual-row contacts.
For industrial automation controllers needing 80 or more I/O signals, when should an engineer choose TFM-142-04-LM-D-LC over two smaller connectors?
Using a single TFM-142-04-LM-D-LC is preferred when the PCB layout can accommodate one continuous 53 mm dual-row footprint, as it eliminates the routing complexity and skew associated with splitting 84 signals across two separate connectors each with their own ground references. A single 84-pin connector also reduces BOM line items and assembly pick-and-place operations, lowering unit cost in high-volume industrial controller production by consolidating all signals into one 0.050 inch pitch SMT interface.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 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
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”