QTE-040-04-L-D-A SAMTEC Connector (Other) In Stock
The QTE-040-04-L-D-A is a SAMTEC board-stacking connector with 40 positions, dual-row layout, right-angle SMT termination, gold-over-nickel contact finish, and positioning pin alignment, measuring 1.575" × 0.601" in body size. It provides reliable polarized board-to-board interconnection for high-density embedded systems. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 88
- Lifecycle
- ACTIVE
- Datasheet
- QTE-040-04-L-D-A Datasheet PDF
- Category
- Connector
- Price
- From $10.6122(MOQ 5)
- 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 QTE-040-04-L-D-A?
- 40-position dual-row board stacking connector with right-angle (L) surface-mount termination for low-profile card-to-card assemblies
- Gold (10 µin) over nickel (50 µin) contact finish ensuring low contact resistance and corrosion resistance over thousands of mating cycles
- E.L.P. polarized design with positioning pin preventing mis-insertion in automated assembly and field maintenance
What is QTE-040-04-L-D-A used for?
The QTE-040-04-L-D-A is used in board-to-board stacking assemblies for embedded computing modules, industrial SBC carrier boards, and test fixture backplanes where 40 signals must route horizontally between PCBs in a compact right-angle orientation. Its polarized E.L.P. design with positioning pin prevents mis-mating during field replacement, reducing service errors in deployed industrial and medical hardware. The gold-over-nickel contact finish maintains reliable electrical continuity across the full rated number of mating cycles in environments with humidity and temperature variation.
What are the specifications of QTE-040-04-L-D-A?
| Pbfree Code | Yes |
| Factory Lead Time | 1Week |
| YTEOL | 8.68 |
| Additional Feature | E.L.P., POLARIZED |
| Board Mounting Option | POSITIONING PIN |
| Body Breadth | 0.235inch |
| Body Depth | 0.601inch |
| Body Length | 1.575inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | GOLD (10) OVER NICKEL (50) |
| Contact Finish Termination | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | NOT SPECIFIED |
| Contact Pattern | RECTANGULAR |
| Contact Style | CENTRONIC |
| DIN Conformance | NO |
| Durability | 100Cycles |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.031inch |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| 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 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 6.096mm |
| Plating Thickness | 10u inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 2A |
| Reference Standard | UL |
| Terminal Pitch | 0.8mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 80 |
| 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 QTE-040-04-L-D-A datasheet?
QTE-040-04-L-D-A Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for QTE-040-04-L-D-A?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many positions does the QTE-040-04-L-D-A provide, and how are they physically arranged?
The QTE-040-04-L-D-A provides 40 positions arranged in 2 rows on a standard SAMTEC QTE pitch, with a body length of 1.575 inches and body depth of 0.601 inches, accommodating 20 contacts per row in a right-angle dual-row SMT board stacking footprint designed for horizontal card-to-card interconnects.
What contact plating does the QTE-040-04-L-D-A use, and why is gold plating important for long-term reliability?
The QTE-040-04-L-D-A uses 10 µin of gold over 50 µin of nickel on mating contact surfaces. Gold prevents oxide formation that increases contact resistance over time, ensuring stable milliohm-level connection resistance across thousands of mating cycles and in humid or corrosive industrial environments where base-metal contacts would degrade within months.
In which embedded computing or industrial applications is the polarized QTE-040-04-L-D-A board stacking connector most appropriate?
The QTE-040-04-L-D-A is most appropriate for COM Express carrier-to-module interfaces, industrial SBC I/O expansion boards, and medical imaging daughtercards where 40 mixed signal and power lines must interconnect between stacked PCBs separated by 4 mm stack height, and where the polarized positioning pin ensures correct orientation during both factory assembly and field service replacement.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 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 |
|---|---|---|
| 5+ | $26.0900 | $130.45 |
| 10+ | $23.4800 | $234.80 |
| 15+ | $20.8700 | $313.05 |
| 80+ | $15.5271 | $1242.17 |
| 120+ | $11.1000 | $1332.00 |
| 240+ | $10.6122 | $2546.93 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
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