3M 3314-5303 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3314-5303 is a right-angle rectangular connector header with 14 positions at 2.54mm pitch, designed for through-hole solder termination in 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. The 3314-5303 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	14
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Contact Finish - Mating	Gold
Contact Finish - Post	Tin-Lead
Contact Material	Copper Alloy
Insulation Material	PCT, Polyester, Glass Filled
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 3314-5303 is determined by strict adherence to the following critical parameters:

Connector type: Header with male pins
Pitch and position configuration: 0.100" (2.54mm) pitch, 14 positions, 2 rows
Mounting style: Through-hole, right-angle orientation
Shrouding: 4-wall shrouded design
Termination method: Solder
Contact finish: Gold mating surface
Insulation material class: Glass-filled thermoplastic (PCT or PBT)
Flammability rating: UL94 V-0 minimum
Operating temperature range: Minimum -55°C to 105°C
Current capacity: 1.75A per contact

Substitute parts must maintain these core electrical and mechanical specifications. Variations in contact post length, contact finish thickness, fastening mechanism (latch vs. push-pull), and insulation color are permissible when the primary functional parameters remain equivalent.

Parameter Comparison

Parameter	3314-5303 (Main)	D3314-5002-AR	N3314-5002RB	09185145911	09185145913	09185146911	09185146913	09185146913001	09185147911	09185147913
Manufacturer	3M	3M	3M	HARTING	HARTING	HARTING	HARTING	HARTING	HARTING	HARTING
Series	3000	D3000	3000	SEK	SEK	SEK	SEK	SEK	SEK	SEK
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
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)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	14	14	14	14	14	14	14	14	14	14
Number of Rows	2	2	2	2	2	2	2	2	2	2
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)	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	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	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
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)	0.228" (5.80mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Contact Material	Copper Alloy	Brass	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy
Insulation Material	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	PBT, Glass Filled	PBT, Glass Filled	PBT, Glass Filled	PBT, Glass Filled	PBT, Glass Filled	PBT, Glass Filled	PBT, Glass Filled
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
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	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain functional equivalence to the 3314-5303 across the critical parameters of connector type, pitch, position count, mounting style, and shrouding configuration. The primary distinction between substitute options relates to product status and regulatory compliance.

The 3M D3314-5002-AR and N3314-5002RB are direct 3M alternatives with active product status and RoHS compliance, making them the preferred choice for new designs requiring regulatory alignment with the original manufacturer's ecosystem.

The HARTING SEK series parts (09185145911, 09185145913, 09185146911, 09185146913, 09185146913001, 09185147911, 09185147913) provide functionally equivalent solutions with ROHS3 compliance and extended operating temperature range to 125°C. These parts are suitable for applications requiring higher thermal performance or cross-manufacturer sourcing flexibility.

Contact post length variations (0.112" to 0.177") and fastening mechanism differences (push-pull versus latch lock) do not affect electrical or mechanical compatibility when PCB footprints are designed to accommodate the specified post length range.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 3314-5303 with any of the listed parts without PCB redesign?

A: Substitution is possible with attention to contact post length. The 3314-5303 specifies 0.155" post length. Substitute parts range from 0.112" to 0.177". PCB hole depth and solder pad design must accommodate the selected substitute's post length specification. The D3314-5002-AR and N3314-5002RB with 0.112" post length require shallower PCB holes compared to HARTING parts with 0.177" post length.

Q: What is the difference between the 3M and HARTING substitute options?

A: Both manufacturers provide electrically and mechanically equivalent 14-position, 2.54mm pitch right-angle headers. The 3M options (D3314-5002-AR, N3314-5002RB) maintain the original series design with RoHS compliance. HARTING SEK series parts offer ROHS3 compliance and extended temperature rating to 125°C. Fastening mechanisms differ: 3M uses push-pull latches while HARTING uses latch lock/eject hooks.

Q: Are there packaging differences between substitute parts?

A: Yes. The D3314-5002-AR ships in tray packaging, while N3314-5002RB and all HARTING parts are supplied in bulk packaging. Packaging selection should align with assembly process requirements and inventory management practices.

Q: Does the contact finish difference (tin-lead versus tin) affect compatibility?

A: No. The original 3314-5303 uses tin-lead post finish; all substitutes use tin post finish. Both finishes are compatible with standard solder reflow processes and provide equivalent electrical performance. Tin finish is preferred for RoHS compliance.

Q: Can I use the HARTING 09185167904800 as a substitute?

A: No. The 09185167904800 is a 16-position vertical header, not a 14-position right-angle header. It does not meet the core functional requirements of the 3314-5303 and is not a valid substitute.

Q: What is the significance of the extended temperature range in HARTING parts?

A: HARTING SEK series parts operate to 125°C versus the original 105°C specification. This extended range provides design margin for applications with elevated ambient or component-generated heat. The extended range does not affect compatibility with designs rated for 105°C operation.

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