3431-6303 3M Connector (Other) In Stock
3M 3431-6303 is a latched, polarized through-hole board receptacle connector with 30 µin gold over 100 µin nickel contact finish, a 2.465 inch body length, and 0.099-0.111 inch hole mounting, designed for reliable multi-pin PCB interconnect in industrial and computing equipment.
- Manufacturer
- 3M
- Package
- Other
- Pin Count
- 34
- Lifecycle
- OBSOLETE
- Datasheet
- 3431-6303 Datasheet PDF
- Category
- Connector
- Price
- From $2.7911(MOQ 1)
- Temp Range
- -55.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 3431-6303?
- Latched and polarized receptacle design prevents incorrect mating and ensures secure retention in vibration-prone environments
- Gold (30 µin) over nickel (100 µin) contact finish delivers low contact resistance and long service life across high mating cycles
- Through-hole mounting with 0.099-0.111 inch hole diameter provides robust mechanical anchoring on standard PCBs
- Body dimensions of 2.465 inch length x 0.681 inch depth suit high pin-count board connector applications
What is 3431-6303 used for?
The 3M 3431-6303 is used in industrial control systems, server backplanes, and data acquisition boards where a reliable, keyed multi-pin board connector is required. Its latched and polarized receptacle design reduces the risk of mismatched assembly during field maintenance or manufacturing, making it valuable in harsh-environment electronics. The gold-over-nickel contact plating ensures stable contact resistance over thousands of mating cycles in telecom equipment and test fixture applications.
What are the specifications of 3431-6303?
| Pbfree Code | No |
| YTEOL | 0 |
| Additional Feature | 3M, LATCHED, POLARIZED |
| Board Mounting Option | HOLE .099-.111 |
| Body Breadth | 0.34inch |
| Body Depth | 0.681inch |
| Body Length | 2.465inch |
| Body/Shell Style | RECEPTACLE |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD (30) OVER NICKEL (100) |
| Contact Finish Termination | Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | COPPER ALLOY |
| Contact Pattern | RECTANGULAR |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Dielectric Withstanding Voltage | 1000VAC V |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulation Resistance | 1000000000Ω |
| Insulator Color | GRAY |
| Insulator Material | GLASS FILLED POLYBUTYLENE TEREPHTHALATE |
| JESD-609 Code | e0 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.1inch |
| Mating Contact Row Spacing | 0.1inch |
| Mixed Contacts | NO |
| Mounting Option 1 | LATCH & EJECT |
| 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 | 2.54mm |
| Plating Thickness | 30u inch |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 1A |
| Reference Standard | UL |
| Terminal Length | 0.155inch |
| Terminal Pitch | 2.54mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 34 |
| UL Flammability Code | 94V-0 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
What are equivalent replacements for 3431-6303?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact plating does the 3431-6303 use and how does it affect connector longevity?
The 3431-6303 features 30 µin gold plating over 100 µin nickel on mating contacts, providing excellent corrosion resistance and low contact resistance over many mating cycles. This plating combination is standard for connectors requiring reliable signal integrity in industrial, telecom, and computing board interconnect applications.
How do the latch and polarization features of the 3431-6303 reduce assembly errors in PCB systems?
The 3431-6303 incorporates a latch mechanism that audibly clicks when fully seated, confirming secure engagement, and a polarization feature that physically prevents reversed insertion. These design elements reduce mis-mating errors in high-density industrial control panels and server assemblies, where incorrect connections could damage sensitive circuitry.
What are the board mounting hole requirements for the 3431-6303 and how does its body size affect PCB layout planning?
The 3431-6303 requires through-hole mounting with hole diameters of 0.099 to 0.111 inches, compatible with standard PCB drill sizes. Its body measures 2.465 inches in length and 0.681 inches in depth, so PCB designers must reserve a footprint of approximately 2.5 inches along the board edge to accommodate this receptacle connector in industrial and computing applications.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
Why Buy from FindMyChip
About 3M
3M is a leading electronic component manufacturer. FindMyChip sources 3M ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.7911 | $2.79 |
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
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
AVB 1,5/2/12
BLOCK
Connector
CLE-110-01-G-DV-TR
SAMTEC
Connector
CLE-110-01-G-DV-A-TR
SAMTEC
Connector
CLE-110-01-G-DV-A
SAMTEC
Connector
TSM-103-01-TM-DV
SAMTEC
Connector
TSM-103-01-T-SH
SAMTEC
Connector
TSM-103-01-T-DV
SAMTEC
Connector
TSM-110-02-S-DV
SAMTEC
Connector
2274001-1
TE Connectivity
Connector
0533980671
Molex
Connector
LCQT-SSOP20
ARIES
Connector
615008145221
Würth Elektronik
Connector
615008137421
Würth Elektronik
Connector
615008140621
Würth Elektronik
Connector
MEC6-130-02-L-DV-A
SAMTEC
Connector
MEC6-130-02-L-D-RA1
SAMTEC
Connector
MEC6-120-02-L-DV-A
SAMTEC
Connector
MEC6-120-02-L-D-RA1
SAMTEC
Connector