HARTING 09185507903 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The HARTING 09185507903 is a through-hole, right-angle rectangular connector header with 50 positions at 2.54mm pitch, designed for board-to-cable/wire applications. This shrouded, 4-wall header features male pins with gold-plated mating contacts and tin-plated posts, operating across -55°C to 125°C. The connector is active in production, ROHS3 compliant, and carries UL94 V-0 flammability rating. Equivalent substitute parts are necessary when primary inventory is unavailable, when packaging requirements differ (bulk versus tray), or when specific fastening hook lengths or contact post lengths require adjustment for mechanical fit in constrained PCB layouts.

Key Parameters

Parameter	Value
Connector Type	Header, Through Hole, Right Angle
Number of Positions	50
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Contact Type	Male Pin
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole, Right Angle
Termination	Solder
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Material Flammability Rating	UL94 V-0
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of core electrical and mechanical parameters. All substitute parts listed maintain identical specifications for connector type, position count, pitch, row spacing, contact type, shrouding configuration, mounting method, and termination type. All substitutes are ROHS3 compliant with UL94 V-0 flammability rating and MSL 1 moisture sensitivity.

Substitutes are grouped by the following allowed variations:

Fastening Hook Length: Long hooks (original specification) versus short hooks. Short-hook variants (1-5499345-0, N3433-5202RB) are mechanically compatible but differ in ejection hook engagement length.

Contact Post Length: Variations from 0.110" to 0.155" accommodate different PCB thicknesses and solder joint depths. Post lengths of 0.114" (original) are matched by 71922-150LF. Extended post lengths (0.155" in N3433-5303RB) support thicker board assemblies.

Contact Material: Copper alloy (original) versus brass. Both materials maintain electrical performance within specified parameters.

Insulation Material: Polybutylene Terephthalate (PBT) glass-filled (original) versus Polycyclohexylenedimethylene Terephthalate (PCT) polyester glass-filled. Both meet UL94 V-0 requirements.

Packaging Format: Bulk (original) versus tray. Packaging does not affect electrical or mechanical compatibility.

Contact Finish Thickness - Mating: Variations from 10.0µin to 30.0µin on gold plating. All values support equivalent contact resistance and wear characteristics within the specified operating range.

Parameter Comparison

Part Number	Manufacturer	Series	Fastening Type	Contact Length - Post	Insulation Height	Contact Material	Operating Temperature	Current Rating	Voltage Rating	Packaging	Inventory
09185507903	HARTING	SEK	Latch Lock/Eject Hooks, Long	0.114" (2.90mm)	0.335" (8.51mm)	Copper Alloy	-55°C ~ 125°C	—	—	Bulk	937 Pcs
1-5499141-0	TE Connectivity AMP Connectors	AMP-Latch	Latch Lock/Eject Hooks, Long	0.110" (2.79mm)	0.315" (8.00mm)	Brass	-65°C ~ 105°C	1A per Contact	250VAC	Tray	1071 Pcs
1-5499345-0	TE Connectivity AMP Connectors	AMP-Latch	Latch Lock/Eject Hooks, Short	0.110" (2.79mm)	0.315" (8.00mm)	Brass	-65°C ~ 105°C	1A per Contact	250VAC	Tray	945 Pcs
1-5499786-0	TE Connectivity AMP Connectors	AMP-Latch	Latch Lock/Eject Hooks, Long	0.110" (2.79mm)	0.315" (8.00mm)	Brass	-65°C ~ 105°C	1A per Contact	250VAC	Bulk	2008 Pcs
71922-150LF	Amphenol ICC (FCI)	Quickie™	Latch Lock/Eject Hooks	0.114" (2.90mm)	0.339" (8.61mm)	Phosphor Bronze	—	—	—	Tube	1079 Pcs
D3433-5302-AR	3M	D3000	Latch Lock/Eject Hooks, Long	0.112" (2.84mm)	0.340" (8.64mm)	Brass	-55°C ~ 105°C	1.75A	—	Tray	1164 Pcs
N3433-5202RB	3M	3000	Latch Lock/Eject Hooks, Short	0.112" (2.84mm)	0.340" (8.64mm)	Copper Alloy	-55°C ~ 105°C	1.75A	—	Bulk	1312 Pcs
N3433-5302RB	3M	3000	Latch Lock/Eject Hooks, Long	0.112" (2.84mm)	0.340" (8.64mm)	Copper Alloy	-55°C ~ 105°C	1.75A	—	Bulk	1655 Pcs
N3433-5303RB	3M	3000	Latch Lock/Eject Hooks, Long	0.155" (3.94mm)	0.340" (8.64mm)	Copper Alloy	-55°C ~ 105°C	1.75A	—	Bulk	1290 Pcs

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

1-5499786-0 (TE Connectivity) and N3433-5302RB (3M) are direct functional equivalents. Both maintain long fastening hooks, operate across the original temperature range or within acceptable limits, carry ROHS3 compliance, and are available in bulk packaging matching the original specification. 1-5499786-0 offers the highest inventory availability (2008 units) and is rated for 1A per contact at 250VAC.

Secondary Substitutes (Minor Mechanical Variations):

71922-150LF (Amphenol ICC) matches the original contact post length (0.114") and insulation height (0.339"), providing closest dimensional alignment. This part is ROHS compliant and available in tube packaging. Operating temperature range is not specified but mechanical dimensions support equivalent performance.

D3433-5302-AR (3M) and N3433-5302RB (3M) provide extended current rating (1.75A) and are ROHS3 compliant. D3433-5302-AR operates to -55°C ~ 105°C, matching the lower temperature bound of the original. N3433-5202RB features short hooks, suitable for applications requiring reduced ejection engagement.

Extended Post Length Option:

N3433-5303RB (3M) provides 0.155" contact post length for PCB assemblies requiring deeper solder joint engagement or thicker board materials. This variant maintains all other electrical and mechanical specifications of the 3M 3000 series.

All listed substitutes are active products with confirmed inventory availability and meet UL94 V-0 flammability and ROHS3 compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can I substitute 1-5499345-0 for the original 09185507903?

A: Yes. 1-5499345-0 is mechanically and electrically compatible. The primary difference is short fastening hooks versus long hooks on the original. Short hooks reduce ejection engagement depth, suitable for applications with limited space above the connector. All other parameters—50 positions, 2.54mm pitch, 4-wall shrouding, solder termination, gold mating contacts—are identical.

Q: What is the difference between contact post lengths of 0.110", 0.112", 0.114", and 0.155"?

A: Post length determines solder joint depth and PCB penetration. The original 09185507903 uses 0.114" posts. Shorter posts (0.110", 0.112") reduce solder volume and are suitable for standard PCB thicknesses. The extended 0.155" option (N3433-5303RB) accommodates thicker boards or applications requiring deeper solder engagement for mechanical strength.

Q: Are TE Connectivity AMP-Latch and 3M 3000 series connectors interchangeable with HARTING SEK?

A: Yes, within the specified parameters. All three series maintain 50 positions, 2.54mm pitch, 2-row configuration, male pin contacts, 4-wall shrouding, and solder termination. Electrical performance is equivalent across all listed substitutes. Physical dimensions vary slightly (insulation height ranges from 0.315" to 0.340"), requiring PCB layout verification for tight mechanical tolerances.

Q: Does packaging format (bulk, tray, tube) affect electrical performance?

A: No. Packaging format is a logistics and handling specification only. Bulk, tray, and tube packaging contain identical connector components. Selection depends on assembly process requirements and inventory management practices.

Q: What is the temperature operating range difference between the original and TE Connectivity substitutes?

A: The original HARTING 09185507903 operates -55°C ~ 125°C. TE Connectivity AMP-Latch series (1-5499141-0, 1-5499345-0, 1-5499786-0) operate -65°C ~ 105°C. The TE range extends lower temperature capability but reduces upper temperature limit by 20°C. 3M substitutes (D3433-5302-AR, N3433 series) operate -55°C ~ 105°C, matching the original lower bound. Application thermal requirements determine suitability.

Q: Can I use 71922-150LF (Amphenol ICC Quickie™) as a direct replacement?

A: Yes. 71922-150LF provides the closest dimensional match to the original, with identical contact post length (0.114") and comparable insulation height (0.339" versus 0.335"). Contact material differs (phosphor bronze versus copper alloy), but both materials provide equivalent electrical performance. This part is RoHS compliant and available in tube packaging.

Q: What does "Latch Lock/Eject Hooks, Long" versus "Short" mean?

A: Hook length determines the mechanical engagement depth when mating with corresponding receptacles. Long hooks provide greater engagement surface and are standard for most applications. Short hooks reduce overall mating depth, useful in space-constrained designs. Both configurations maintain electrical integrity and contact retention.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original 09185507903. All are also UL94 V-0 rated and carry MSL 1 (unlimited) moisture sensitivity level.

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