3M 3314-56K2 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3314-56K2 is a through-hole, right-angle rectangular connector header with 14 positions at 2.54mm pitch, designed for board-to-cable/wire applications. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The connector features shrouded 4-wall construction with kinked pin solder termination and latch lock/eject hooks for secure mating.

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, Right Angle
Shrouding	Shrouded - 4 Wall
Style	Board to Cable/Wire
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 3M 3314-56K2 is determined by strict equivalence in the following critical parameters:

Connector configuration: 14-position, 2-row header at 0.100" (2.54mm) pitch
Mounting and orientation: Through-hole, right-angle mounting
Shrouding: 4-wall shrouded construction
Electrical performance: 1.75A current rating, UL94 V-0 flammability rating
Environmental specifications: -55°C to 105°C operating temperature range
Termination compatibility: Solder termination for PCB mounting

The substitute parts are grouped into two categories:

Category A - 3M Series (Active Status)

D3314-5002-AR (D3000 Series, RoHS Compliant)
N3314-5002RB (3000 Series, RoHS Compliant)

Category B - TE Connectivity AMP-Latch Series (Active Status)

499141-2 (AMP-Latch Series)
499786-2 (AMP-Latch Series)
5499786-2 (AMP-Latch Series, RoHS Compliant)

All substitute parts maintain the core electrical and mechanical specifications required for direct functional replacement.

Parameter Comparison

Parameter	3314-56K2	D3314-5002-AR	N3314-5002RB	499141-2	499786-2	5499786-2
Manufacturer	3M	3M	3M	TE Connectivity	TE Connectivity	TE Connectivity
Product Status	Obsolete	Active	Active	Active	Active	Active
Number of Positions	14	14	14	14	14	14
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.315" (8.00mm)	0.315" (8.00mm)	0.315" (8.00mm)
Contact Shape	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold or Gold-Palladium
Contact Material	Copper Alloy	Brass	Copper Alloy	Brass	Brass	Brass
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C
Current Rating	1.75A	1.75A	1.75A	1A per Contact	1A per Contact	1A per Contact
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Non-compliant	Compliant	Compliant	Not applicable	Not applicable	Compliant

Engineering Selection Recommendations

For RoHS-compliant applications: Select D3314-5002-AR, N3314-5002RB, or 5499786-2. These parts meet RoHS compliance requirements and maintain active product status with full manufacturer support.

For applications requiring extended temperature range: TE Connectivity AMP-Latch series (499141-2, 499786-2, 5499786-2) provide -65°C to 105°C operating range, compared to -55°C to 105°C for 3M parts.

For applications with current requirements at 1.75A: 3M parts (D3314-5002-AR and N3314-5002RB) maintain the original 1.75A current rating. TE Connectivity parts are rated at 1A per contact and require current distribution analysis across multiple contacts for equivalent performance.

For new designs: Prioritize active-status parts from either 3M (D3000 or 3000 Series) or TE Connectivity (AMP-Latch Series). All substitute options provide equivalent mechanical fit and electrical performance within their specified ratings.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 3314-56K2 with any of the listed substitutes? A: Yes, all listed parts maintain equivalent 14-position, 2.54mm pitch, right-angle through-hole configuration with 4-wall shrouding. Physical fit and electrical function are preserved across all substitutes.

Q: What is the difference between 3M and TE Connectivity options? A: Both manufacturers provide functionally equivalent parts. Key differences include contact material (copper alloy vs. brass), current rating per contact (1.75A vs. 1A), and operating temperature range (-55°C to 105°C vs. -65°C to 105°C). TE Connectivity parts offer extended low-temperature capability.

Q: Which substitute should I choose for RoHS-compliant designs? A: D3314-5002-AR, N3314-5002RB, and 5499786-2 are RoHS compliant. The original 3314-56K2 is RoHS non-compliant, making these three options necessary for new designs subject to RoHS requirements.

Q: Are there packaging differences between substitutes? A: Yes. D3314-5002-AR is supplied in Tray packaging, N3314-5002RB in Bulk, and TE Connectivity parts in Bulk. Packaging affects handling and storage but does not impact electrical or mechanical performance.

Q: What is the difference between fastening types? A: The original 3314-56K2 uses Latch Lock/Eject Hooks (Long). D3314-5002-AR and N3314-5002RB use Push-Pull fastening. TE Connectivity parts retain Latch Lock/Eject Hooks (Long). Fastening type affects mating force and connector retention but does not affect electrical compatibility.

Q: Can I use TE Connectivity parts if my design specifies 1.75A current? A: TE Connectivity parts are rated at 1A per contact. For 14-position connectors with 2 rows, current distribution across multiple contacts must be analyzed. If total current exceeds 14A (1A × 14 contacts), TE Connectivity parts are not suitable without design modification.

Q: What is the contact finish difference between parts? A: All parts feature gold mating contact finish. Thickness varies: 3314-56K2 has 30.0µin (0.76µm), D3314-5002-AR has 10.0µin (0.25µm), N3314-5002RB has 30.0µin (0.76µm), and TE Connectivity parts have 15.0µin (0.38µm) or 30.0µin (0.76µm). These variations do not affect functional compatibility.

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