3M 3314-5203 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3314-5203 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 operates across the -55°C to 105°C temperature range with a 1.75A current rating per contact and features shrouded 4-wall construction with gold-plated mating contacts and tin-lead post finish.

The 3314-5203 carries an obsolete product status. Equivalent and substitute parts are available from 3M's active product lines and alternative manufacturers, offering improved compliance profiles and extended availability.

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
Termination	Solder
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0
Contact Finish - Mating	Gold
Contact Finish - Post	Tin-Lead

Substitute Part Grouping Explanation

Substitution eligibility for the 3314-5203 is determined by strict equivalence across the following critical parameters:

Connector type, contact type, and gender (Header, Male Pin)
Position count and row configuration (14 positions, 2 rows)
Mating pitch and row spacing (0.100" / 2.54mm)
Mounting style and orientation (Through Hole, Right Angle)
Shrouding configuration (Shrouded - 4 Wall)
Termination method (Solder)
Operating temperature range (-55°C ~ 105°C minimum)
Current rating (1.75A minimum per contact)
Flammability rating (UL94 V-0)

Substitute parts are grouped into two categories:

Category A - Direct 3M Equivalents (Series 3000 & D3000): Parts N3314-5203RB, D3314-5002-AR, and N3314-5002RB maintain identical mechanical and electrical specifications with variations in fastening type (Latch Lock/Eject Hooks vs. Push-Pull) and contact post finish (Tin-Lead vs. Tin). These parts share the same base connector architecture and are fully interchangeable at the board interface.

Category B - Cross-Manufacturer Alternatives (TE Connectivity & CW Industries): Parts 499345-2, 5499345-2, 499913-2, and CWN-511-14-0021 meet all critical electrical and mechanical parameters but originate from different manufacturers. These parts maintain pitch, position count, shrouding, and temperature ratings while introducing variations in contact material, insulation height, and fastening mechanisms.

Parameter Comparison

Parameter	3314-5203	N3314-5203RB	D3314-5002-AR	N3314-5002RB	499345-2	5499345-2	499913-2	CWN-511-14-0021
Manufacturer	3M	3M	3M	3M	TE Connectivity	TE Connectivity	TE Connectivity	CW Industries
Series	3000	3000	D3000	3000	AMP-Latch	AMP-Latch	AMP-Latch	CWN
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Positions / Rows	14 / 2	14 / 2	14 / 2	14 / 2	14 / 2	14 / 2	14 / 2	14 / 2
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)	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)	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	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	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks, Short	Push-Pull	Push-Pull	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks, Short
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)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.155" (3.94mm)	0.155" (3.94mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.155" (3.94mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.315" (8.00mm)	0.315" (8.00mm)	0.315" (8.00mm)	0.350" (8.89mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Circular
Contact Material	Copper Alloy	Copper Alloy	Brass	Copper Alloy	Brass	Brass	Brass	Phosphor Bronze
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	10.0µin (0.25µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	15.0µin (0.38µm)	30.0µin (0.76µm)
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin-Lead	Tin	Tin-Lead	Nickel
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-55°C ~ 125°C
Current Rating	1.75A	1.75A	1.75A	1.75A	1A per Contact	1A per Contact	1A per Contact	1A
Voltage Rating	—	—	—	—	250VAC	250VAC	250VAC	—
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	Non-compliant	Compliant	Compliant	Compliant	Non-compliant	ROHS3 Compliant	Not applicable	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement with Active Product Status:

N3314-5203RB is the primary equivalent, maintaining identical mechanical dimensions, contact post length, and electrical specifications while upgrading to RoHS Compliant status. This part is recommended for new designs and production transitions from the obsolete 3314-5203.

For Push-Pull Fastening Requirement:

D3314-5002-AR and N3314-5002RB provide push-pull fastening in place of latch-lock mechanisms, with reduced contact post length (0.112" vs. 0.155"). These parts are suitable for applications requiring tool-free mating and demating. Both carry RoHS Compliant certification.

For Cross-Manufacturer Alternatives:

5499345-2 (TE Connectivity AMP-Latch series) offers ROHS3 Compliant status with extended temperature range (-65°C to 105°C) and tin post finish. CWN-511-14-0021 (CW Industries) provides the widest operating temperature range (-55°C to 125°C) with ROHS3 Compliant certification and nickel post finish.

Compliance Considerations:

Parts with RoHS or ROHS3 Compliant status are preferred for new applications and regulated markets. The 3314-5203 and 499345-2 carry non-compliant status and are suitable only for legacy system maintenance or applications without RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can N3314-5203RB directly replace 3314-5203 on existing PCBs?

A: Yes. N3314-5203RB maintains identical mating contact length (0.240"), post length (0.155"), insulation height (0.340"), and pitch specifications. The primary difference is RoHS Compliant status and tin post finish instead of tin-lead. Board-level compatibility is complete.

Q: What is the difference between latch-lock and push-pull fastening types?

A: Latch-lock fastening (3314-5203, N3314-5203RB, 499345-2, 5499345-2, 499913-2, CWN-511-14-0021) uses mechanical hooks requiring tool-assisted mating and demating. Push-pull fastening (D3314-5002-AR, N3314-5002RB) allows hand-operated mating and demating without tools. Both provide equivalent electrical performance and mechanical retention.

Q: Are TE Connectivity 499345-2 and 5499345-2 interchangeable?

A: Both parts share identical mechanical and electrical specifications with the following differences: 499345-2 carries RoHS non-compliant status with tin-lead post finish, while 5499345-2 is ROHS3 Compliant with tin post finish. Electrical performance and board-level compatibility are equivalent. Selection depends on compliance requirements.

Q: What is the impact of reduced contact post length in D3314-5002-AR and N3314-5002RB?

A: Contact post length is reduced from 0.155" to 0.112". This affects solder joint geometry and PCB pad design. These parts are suitable for applications with reduced board thickness or where shorter post length is specified. Verify PCB pad layout compatibility before substitution.

Q: Does CWN-511-14-0021 have different contact geometry?

A: Yes. CWN-511-14-0021 features circular contact shape instead of square, with phosphor bronze material instead of copper alloy or brass. Mating pitch and electrical specifications remain equivalent. Contact geometry differences may affect mating force and connector feel but do not impact electrical performance.

Q: Which substitute part offers the widest operating temperature range?

A: CWN-511-14-0021 operates across -55°C to 125°C, providing 20°C additional high-temperature capability compared to the 3314-5203 baseline (-55°C to 105°C). TE Connectivity parts (499345-2, 5499345-2, 499913-2) extend the low-temperature range to -65°C while maintaining 105°C maximum.

Q: Are there current rating differences between substitute parts?

A: The 3314-5203 is rated at 1.75A per contact. TE Connectivity parts (499345-2, 5499345-2, 499913-2) and CWN-511-14-0021 are rated at 1A per contact. For applications requiring 1.75A per contact, 3M parts (N3314-5203RB, D3314-5002-AR, N3314-5002RB) maintain the original rating.

Q: What packaging options are available?

A: 3314-5203 and CWN-511-14-0021 are supplied in standard packaging. N3314-5203RB, 499345-2, and 5499345-2 are available in bulk packaging. D3314-5002-AR and 499913-2 are supplied in tray packaging. Packaging selection affects order quantities and handling procedures but does not impact connector performance.

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