3M 3314-2303 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3314-2303 is a through-hole rectangular connector header with 14 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement. The connector features shrouded 3-wall construction, latch lock/eject fastening, and gold-plated mating contacts suitable for board-to-cable/wire applications in industrial and commercial electronics.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	14
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 3 Wall
Fastening Type	Latch Lock/Eject Hooks, Long
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 3M 3314-2303 is determined by the following critical parameters:

Primary Matching Criteria:

Connector type: Header
Contact type: Male Pin
Number of positions: 14
Number of rows: 2
Pitch - mating: 0.100" (2.54mm)
Row spacing - mating: 0.100" (2.54mm)
Mounting type: Through Hole
Termination: Solder

Secondary Compatibility Factors:

Shrouding configuration (3-wall vs. 4-wall affects mechanical fit)
Fastening type (latch lock/eject hooks vs. push-pull affects mating interface)
Contact length specifications (mating and post lengths)
Insulation height and overall contact length
Operating temperature range
Current rating capacity

The substitute parts identified fall into two distinct groups based on shrouding and fastening type variations, which represent mechanical design trade-offs while maintaining electrical compatibility at the 14-position, 2.54mm pitch standard.

Parameter Comparison

Parameter	3314-2303	N3314-2303RB	3314-6002	N3314-6002RB	301-LS-141
Manufacturer	3M	3M	3M	3M	On Shore Technology Inc.
Product Status	Obsolete	Active	Obsolete	Active	Active
Number of Positions	14	14	14	14	14
Number of Rows	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Shrouding	Shrouded - 3 Wall	Shrouded - 3 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Push-Pull	Push-Pull	Latch Lock/Eject Hooks, Long
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.228" (5.80mm)
Contact Length - Post	0.155" (3.94mm)	0.155" (3.94mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.122" (3.10mm)
Overall Contact Length	0.695" (17.65mm)	0.695" (17.65mm)	0.652" (16.56mm)	0.652" (16.56mm)	0.630" (16.00mm)
Insulation Height	0.680" (17.27mm)	0.680" (17.27mm)	0.680" (17.27mm)	0.680" (17.27mm)	0.660" (16.76mm)
Contact Shape	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	Flash
Contact Finish - Post	Tin-Lead	Tin	Tin-Lead	Tin	-
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Phosphor Bronze
Insulation Material	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	PBT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	PBT
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 120°C
Current Rating	1.75A	1.75A	1A	1.75A	2A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent (Preferred for Retrofit):

N3314-2303RB is the direct active equivalent of 3M 3314-2303. This part maintains identical mechanical and electrical specifications including 3-wall shrouding, latch lock/eject fastening, and contact geometry. The primary distinction is RoHS compliance status and post contact finish (tin vs. tin-lead). This part is recommended for applications requiring direct form-fit-function replacement with modern compliance requirements.

Alternative with Mechanical Variation (4-Wall Shrouding):

N3314-6002RB provides 4-wall shrouding instead of 3-wall, offering enhanced mechanical protection and EMI shielding. This part maintains the same 14-position, 2.54mm pitch configuration and current rating (1.75A) as the original. The fastening mechanism changes from latch lock/eject hooks to push-pull, which affects mating interface compatibility. This substitution requires mechanical validation for connector housing fit.

Cross-Manufacturer Alternative:

301-LS-141 from On Shore Technology Inc. provides a 14-position, 2.54mm pitch header with 4-wall shrouding and latch lock/eject fastening. This part offers extended operating temperature range (-55°C to 120°C vs. -55°C to 105°C) and higher current rating (2A vs. 1.75A). Contact length specifications differ slightly, requiring PCB layout verification. ROHS3 compliance and phosphor bronze contact material provide alternative material specifications.

Compliance Considerations:

For applications requiring RoHS compliance, N3314-2303RB or N3314-6002RB are mandatory selections. Both 3M parts achieve RoHS compliance while maintaining electrical performance. The 301-LS-141 achieves ROHS3 compliance with enhanced thermal performance.

Frequently Asked Questions (FAQ)

Q: Can N3314-2303RB be used as a direct replacement for 3314-2303?

A: Yes. N3314-2303RB is the active equivalent with identical mechanical and electrical specifications. The part maintains 3-wall shrouding, latch lock/eject fastening, 14 positions at 2.54mm pitch, and 1.75A current rating. The primary differences are RoHS compliance and post contact finish material (tin vs. tin-lead), which do not affect functional compatibility.

Q: What is the difference between 3-wall and 4-wall shrouding?

A: 3-wall shrouding provides three sides of mechanical protection and is used in 3314-2303 and N3314-2303RB. 4-wall shrouding provides complete enclosure on four sides, offering enhanced mechanical robustness and EMI shielding, used in 3314-6002, N3314-6002RB, and 301-LS-141. The shrouding configuration affects connector housing dimensions and mating interface compatibility.

Q: Can I substitute 3314-6002 or N3314-6002RB for 3314-2303?

A: Electrical substitution is possible due to matching 14-position, 2.54mm pitch configuration. However, mechanical compatibility requires validation. The 4-wall shrouding and push-pull fastening differ from the original 3-wall shrouding and latch lock/eject design. PCB connector housing and mating connector specifications must be verified for fit and function.

Q: What are the compliance differences between these parts?

A: 3314-2303 and 3314-6002 are RoHS non-compliant. N3314-2303RB and N3314-6002RB are RoHS compliant. 301-LS-141 is ROHS3 compliant. For applications subject to RoHS regulations, N3314-2303RB is the recommended direct replacement.

Q: Does 301-LS-141 have any performance advantages?

A: 301-LS-141 offers extended operating temperature range (-55°C to 120°C vs. -55°C to 105°C), higher current rating (2A vs. 1.75A), and ROHS3 compliance. Contact length specifications differ slightly (0.228" mating vs. 0.240"), requiring PCB layout verification. Phosphor bronze contact material provides alternative material properties compared to copper alloy.

Q: What should I verify before selecting a substitute part?

A: Verify PCB connector housing compatibility with the selected shrouding type (3-wall vs. 4-wall). Confirm mating connector fastening type compatibility (latch lock/eject vs. push-pull). Validate contact post length against PCB pad specifications. Confirm operating temperature and current requirements are met. For RoHS-regulated applications, select only RoHS-compliant variants.

Q: Are there inventory considerations for these parts?

A: 3314-2303 has 1,093 pieces in stock (obsolete status). N3314-2303RB has 923 pieces available (active status). 3314-6002 has 654 pieces available (obsolete status). N3314-6002RB has 2,110 pieces available (active status). 301-LS-141 has 906 pieces available (active status). For long-term supply assurance, active status parts are preferred.

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