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
What are the key features of TFM-142-04-LM-D-LC?
- 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
What is TFM-142-04-LM-D-LC used for?
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) |
Where can I find the TFM-142-04-LM-D-LC datasheet?
TFM-142-04-LM-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFM-142-04-LM-D-LC?
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.
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