TFM-123-04-SM-D-LC SAMTEC Connector (Other) In Stock
SAMTEC TFM-123-04-SM-D-LC is a 46-position high-reliability Tiger Eye dual-row surface mount terminal strip at 0.050 inch pitch with board lock, featuring gold flash over nickel contacts for secure, dense PCB interconnection.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Datasheet
- TFM-123-04-SM-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-123-04-SM-D-LC?
- 46-position dual-row configuration at 0.050 inch (1.27 mm) pitch achieves high signal density in a compact 1.150 inch body length suitable for space-constrained PCB layouts
- Board lock (LC suffix) provides mechanical retention during SMT reflow, preventing 46-position connector shift on solder paste at peak reflow temperatures up to 260 degrees C
- Tiger Eye gold flash over nickel mating contacts deliver reliable low-resistance signal connections across the full rated mating cycle life
What is TFM-123-04-SM-D-LC used for?
The TFM-123-04-SM-D-LC suits high-density board-to-board interconnect in networking switch cards, storage controllers, and embedded computing modules where 46 signal positions at 0.050 inch pitch minimize connector footprint. The board lock ensures stable placement during lead-free SMT reflow, making it a reliable choice for automated production lines with tight process windows. Medical imaging boards and portable test instrumentation also use this connector to maximize contact count within a small PCB area.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFM-123-04-SM-D-LC datasheet?
TFM-123-04-SM-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFM-123-04-SM-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
For a 46-signal parallel interface on a storage controller PCB, how does TFM-123-04-SM-D-LC minimize board area usage?
The TFM-123-04-SM-D-LC packs 46 positions into a dual-row footprint only about 1.150 inches (29.2 mm) long at 0.050 inch pitch, compared to roughly 2.3 inches required for a single-row 0.100 inch pitch connector carrying the same 46 signals. This space saving allows storage controller designers to reduce connector zone area by over 50 percent, freeing PCB real estate for decoupling capacitors and signal trace routing.
How does the board lock on TFM-123-04-SM-D-LC improve SMT assembly yield for 46-position fine-pitch connectors?
The LC board lock pegs press into PCB holes before reflow, anchoring the connector against surface tension and thermal expansion forces during the reflow profile that peaks at 260 degrees C for lead-free solder. Without the lock, a 46-position 0.050 inch pitch connector can shift by as little as 0.025 mm during reflow and cause up to 20 percent of pins to misalign, producing opens or bridges that require costly rework.
In what design scenario would a developer choose TFM-123-04-SM-D-LC over a 40-position TFM-120 variant?
A developer should select the TFM-123-04-SM-D-LC over a 40-position variant when the interface requires exactly 46 conductors, such as a 32-bit data bus with 8 address lines, 4 control signals, and 2 power pins, with no spare positions wasted. Selecting the correct count eliminates unused pads that complicate PCB DFM review and avoids routing additional interconnect signals through a second connector.
Related Guides
TPSM5601R5SRDAR Design Guide: Power Module Validation
Validate a TPSM5601R5SRDAR supply with a practical plan for input limits, output networks, layout, thermal testing, and sourcing.
Oct 29, 2026
XAL6060-103MEB Design Guide for PCB Validation
Validate XAL6060-103MEB converter designs with a current-envelope worksheet, repeatable thermal tests, controlled probing, and exact-part documentation.
Oct 29, 2026
How to Choose ERJ-2RKF49R9X and Related Chip Resistors: Selection Guide
Choose ERJ-2RKF49R9X with checks for resistance, power, drift, package fit, traceability, and procurement requirements.
Oct 28, 2026
How to Choose a Power Inductor Around XAL6060-103MEB
Select a power inductor around XAL6060-103MEB by checking DC bias, peak current, heat, footprint, and traceable sourcing evidence.
Oct 28, 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.”
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